Vaisala MMT330 manual

USER'S GUIDE

Vaisala HUMICAP® Moisture and

Temperature Transmitter for Oil

MMT330

M210733EN-H

PUBLISHED BY

Vaisala Oyj

Street address: Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland

Mailing address: P.O. Box 26, FI-00421 Helsinki, Finland

Phone:

Fax:

+358 9 8949 1

+358 9 8949 2227

Visit our Internet pages at www.vaisala.com

.

© Vaisala 2015

No part of this manual may be reproduced, published or publicly displayed in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be modified, translated, adapted, sold or disclosed to a third party without prior written permission of the copyright holder. Translated manuals and translated portions of multilingual documents are based on the original English versions. In ambiguous cases, the English versions are applicable, not the translations.

The contents of this manual are subject to change without prior notice.

This manual does not create any legally binding obligations for Vaisala towards customers or end users. All legally binding obligations and agreements are included exclusively in the applicable supply contract or the General Conditions of Sale and

General Conditions of Service of Vaisala.

_________________________________________________________________________________

Table of Contents

CHAPTER 1

GENERAL INFORMATION .......................................................................... 11

About This Manual ................................................................. 11

Contents of This Manual ..................................................... 11

Version Information ............................................................. 12

Documentation Conventions ............................................... 12

Safety ....................................................................................... 13

ESD Protection ....................................................................... 13

Recycling ................................................................................ 14

Regulatory Compliances ....................................................... 14

EU Declaration of Conformity .............................................. 14

DNV Type Approval ............................................................ 15

Transmitters with LAN or WLAN Interface .......................... 16

Transmitters with WLAN Interface ...................................... 16

Patent Notice .......................................................................... 17

Trademarks ............................................................................. 17

Software License .................................................................... 17

Warranty .................................................................................. 17

CHAPTER 2

PRODUCT OVERVIEW ................................................................................ 19

Introduction to MMT330 ......................................................... 19

Basic Features and Options ................................................ 20

Structure of the Transmitter ................................................ 20

Probe Options ..................................................................... 22

Typical Applications ............................................................ 23

Methods Used for Measuring Moisture in Oil ................. 23

Lubrication Oil in Paper Machines ................................. 23

Transformer Oil .............................................................. 24

CHAPTER 3

INSTALLATION ............................................................................................ 27

Mounting the Housing ........................................................... 27

Standard Mounting .............................................................. 27

Wall Mounting with Wall Mounting Kit ................................. 28

Mounting with DIN Rail Installation Kit ................................ 29

Pole Installation with Installation Kit for Pole or Pipeline .... 29

Mounting Rain Shield with Installation Kit ........................... 31

Panel Mounting Frame ........................................................ 32

Wiring ...................................................................................... 33

Cable Bushings ................................................................... 33

Grounding the Cables ......................................................... 34

Grounding the Transmitter Housing .................................... 35

Signal and Power Supply Wiring ......................................... 36

VAISALA _________________________________________________________________________ 1

User's Guide _______________________________________________________________________

Connections to a 24 VAC Power Supply ............................. 38

MMT332 for High-Pressure Applications............................. 39

MMT337 Small Pressure-Tight Probe ................................. 39

MMT337 Probe with Swagelok Connector for Tight-place

Installations .......................................................................... 40

MMT338 for Pressurized Pipelines ..................................... 42

Tightening the Clasp Nut ..................................................... 43

Ball Valve Installation Kit for MMT338 ................................. 44

Sampling Cell for MMT338 .................................................. 47

Optional Modules.................................................................... 48

Power Supply Module.......................................................... 48

Installation ...................................................................... 49

Warnings ........................................................................ 50

Galvanic Isolation for Power Supply .................................... 53

Third Analog Output ............................................................ 53

Installation and Wiring .................................................... 54

Relays .................................................................................. 55


Selecting the Activation State of the Relay .................... 55

RS-422/485 Interface .......................................................... 56


LAN Interface ....................................................................... 61

WLAN Interface ................................................................... 62

Attaching the WLAN Antenna......................................... 63

Data Logger Module ............................................................ 63

8-Pin Connector ................................................................... 65

CHAPTER 4

OPERATION ................................................................................................. 67

Getting Started ........................................................................ 67

Display/Keypad (Optional) ..................................................... 67

Basic Display ....................................................................... 67

Graphic History .................................................................... 68

Menus and Navigation ......................................................... 70

Changing the Language ................................................. 71

Rounding Setting ............................................................ 71

Display Backlight Setting ................................................ 71

Display Contrast Setting ................................................. 72

Using Display/Keypad ............................................... 72

Using Serial Line ....................................................... 72

Keypad Lock (Keyguard) ................................................ 72

Menu PIN Lock ............................................................... 73

Factory Settings ............................................................. 73

Display Alarms ..................................................................... 74

Configuring a Display Alarm ........................................... 75

Using Serial Line ............................................................ 76

MI70 Link Program for Data Handling .................................. 78

Serial Line Communication ................................................... 79

User Port Connection .......................................................... 80

User Port Operating Modes ............................................ 80

Service Port Connection ...................................................... 81

Connection Cables ......................................................... 81

Installing the Driver for the USB Cable .......................... 81

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Using the Service Port ................................................... 82

LAN Communication .............................................................. 82

IP Configuration .................................................................. 83

Using Display/Keypad .................................................... 84


Wireless LAN Configuration ................................................ 86



Communication Protocol ..................................................... 89

Web Configuration for LAN and WLAN ............................... 89

Terminal Program Settings ................................................. 90

Opening a Serial/USB connection ................................. 90

Opening a Telnet session (LAN/WLAN) ........................ 92

List of Serial Commands ..................................................... 93

Getting Measurement Message from Serial Line ................ 95

Starting Continuous Outputting ...................................... 95

Stopping Continuous Outputting .................................... 96

Outputting Reading Once .............................................. 96

Assign an Alias for the SEND Command ...................... 96

Outputting Reading Once From All Transmitters ........... 97

Communicating with a Transmitter in POLL Mode ............. 97

OPEN ............................................................................. 97

CLOSE ........................................................................... 97

Formatting Serial Line Message ......................................... 98

FTIME and FDATE......................................................... 98

General Settings ..................................................................... 99

Changing Quantities and Units ........................................... 99


Using Serial Line .......................................................... 100

FORM...................................................................... 100

UNIT ........................................................................ 101

Date and Time ................................................................... 102

Using Display/Keypad .................................................. 102


Data Filtering ..................................................................... 103

Using Display/Keypad .................................................. 103


Device Information ............................................................ 104

? ................................................................................... 104

LIGHT ........................................................................... 105

HELP ............................................................................ 106

ERRS ........................................................................... 106

MODS .......................................................................... 106

VERS ........................................................................... 106

Resetting Transmitter by Using Serial Line ....................... 107

RESET ......................................................................... 107

Locking Menu/Keypad Using Serial Line .......................... 107

LOCK ........................................................................... 107

Serial Output Settings .......................................................... 108

Using Display/Keypad ....................................................... 108

Using Serial Line ............................................................... 109

SERI ............................................................................. 109

SMODE ........................................................................ 109

ADDR ........................................................................... 110

VAISALA _________________________________________________________________________ 3

User's Guide _______________________________________________________________________

INTV ............................................................................. 110

SDELAY ....................................................................... 111

ECHO ........................................................................... 111

Data Recording ..................................................................... 111

Selecting Data Recording Quantities ................................ 112

DSEL ............................................................................ 112

View Recorded Data .......................................................... 112

DIR ............................................................................... 113

PLAY ............................................................................ 114

Deleting the Recorded Files .............................................. 115

UNDELETE .................................................................. 115

Analog Output Settings ....................................................... 116

Changing Output Mode and Range ................................... 116

Analog Output Quantities .................................................. 117

AMODE/ASEL .............................................................. 118

Analog Output Tests .......................................................... 119

ITEST ........................................................................... 119

Analog Output Fault Indication Setting .............................. 120

AERR ............................................................................ 120

Extend Analog Output Range ............................................ 121

Operation of Relays .............................................................. 121

Quantity for Relay Output .................................................. 121

Relay Setpoints ................................................................. 121

Hysteresis .......................................................................... 123

Relay Indicating Transmitter Error Status ......................... 123

Enabling/Disabling Relays ................................................. 125

Setting Relay Outputs........................................................ 125

RSEL ............................................................................ 127

Testing Operation of Relays .............................................. 129

RTEST .......................................................................... 129

CHAPTER 5

MODBUS .................................................................................................... 131

Overview of Modbus Protocol Support .............................. 131

Taking Modbus into Use .................................................... 132

Enabling Serial Modbus ....................................................... 133

Using Display/Keypad (Optional) ...................................... 133


Enabling Ethernet Modbus .................................................. 134

Using Display/Keypad (Optional) ...................................... 134


Diagnostic Modbus Counters .............................................. 137

Viewing Counters Using Display/Keypad .......................... 137

Viewing Counters Using Service Port ............................... 137

Disabling Modbus ................................................................. 138

CHAPTER 6

PPM CONVERSION ................................................................................... 139

MMT330 ppm Conversion for Transformer Oils ................ 139

Conversion Model with Average Coefficients ................... 139

Conversion Model with Oil-specific Coefficients .............. 140

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Setting Oil Coefficients Using Serial Line ......................... 140

OIL ..................................................................................... 140


Determination of Oil-Specific Coefficients ........................ 141

CHAPTER 7

MAINTENANCE ......................................................................................... 143

Periodic Maintenance .......................................................... 143

Cleaning ............................................................................ 143

Changing the Probe Filter ................................................. 143

Changing the Sensor ........................................................... 144

Error States ....................................................................... 145

Technical Support ................................................................ 147

CHAPTER 8

CALIBRATION AND ADJUSTMENT ......................................................... 149

Cleaning the Sensor ............................................................. 150

Opening and Closing the Adjustment Mode ..................... 150

Relative Humidity Adjustment ............................................ 151

Using Push Buttons ........................................................... 151



CRH ............................................................................. 153

Relative Humidity Adjustment after Sensor Change ........ 154



FCRH ........................................................................... 154

Temperature Adjustment ..................................................... 155



Analog Output Adjustment.................................................. 157



ACAL ............................................................................ 157

Feeding Adjustment Information ........................................ 158



CTEXT ......................................................................... 158

CDATE ......................................................................... 158

CHAPTER 9

TECHNICAL DATA .................................................................................... 159

Specifications ....................................................................... 159

Performance ...................................................................... 159

Water Activity and Relative Saturation......................... 159

Temperature ................................................................. 159

Operating Environment ..................................................... 160

Probe Specifications ......................................................... 160

MMT332 ....................................................................... 160

MMT337 ....................................................................... 160

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MMT338 ....................................................................... 160

Inputs and Outputs ............................................................ 161

Mechanics ......................................................................... 161

Technical Specifications of Optional Modules ................... 162

Power Supply Module .................................................. 162

Analog Output Module .................................................. 162

Relay Module ............................................................... 163

RS-485 Module ............................................................ 163

LAN Interface Module ................................................... 163

WLAN Interface Module ............................................... 163

Data Logger Module ..................................................... 164

Spare Parts and Accessories .............................................. 164

Dimensions (mm/inch) ......................................................... 166

MMT332 ............................................................................ 168

MMT337 ............................................................................ 168

MMT337 with Swagelok Connector ................................... 169

MMT338 ............................................................................ 169

APPENDIX A

MODBUS REFERENCE ............................................................................. 171

Function Codes..................................................................... 171

Register Map ......................................................................... 172

Data Encoding ................................................................... 172

32-Bit Floating Point Format ......................................... 172

16-Bit Integer Format ................................................... 173

Measurement Data (Read-Only) ....................................... 174

Status Registers (Read-Only) ........................................... 174

Configuration Registers ..................................................... 174

Exception Status Outputs .................................................... 175

Diagnostic Sub-Functions ................................................... 176

Device Identification Objects .............................................. 177

Exception Responses .......................................................... 177

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List of Figures

Figure 1 Transmitter Body ...................................................................... 20

Figure 2 Inside the Transmitter ............................................................... 21

Figure 3 Probe Options .......................................................................... 22

Figure 4 The Water Solubility of Transformer Oils versus Temperature 25

Figure 5 Standard Mounting Dimensions (in mm/inch) .......................... 27

Figure 6 Mounting with Wall Mounting Kit .............................................. 28

Figure 7 Dimensions of the Plastic Mounting Plate (mm/inch) ............... 28

Figure 8 Mounting with DIN Rail Installation Kit ..................................... 29

Figure 9 Vertical Pole ............................................................................. 29

Figure 10 Horizontal Pole ......................................................................... 30

Figure 11 Mounting with Metal Wall Mounting Plate ................................ 30

Figure 12 Dimensions of Metal Mounting Plate (mm/inch) ...................... 31

Figure 13 Mounting Rain Shield with Installation Kit ................................ 31

Figure 14 Panel Mounting Frame ............................................................. 32

Figure 15 Panel Mounting Dimensions (mm/inch) ................................... 33

Figure 16 Cable Bushings ........................................................................ 33

Figure 17 Grounding the Screen of Electrical Cable ................................ 34

Figure 18 Screw Terminal Block on Motherboard .................................... 36

Figure 19 Connections to 24 VAC Power Supply ..................................... 38

Figure 20 MMT332 Installation ................................................................. 39

Figure 21 MMT337 Probe with Swagelok Installation Kit ......................... 40

Figure 22 MMT337 Probe Installation to Pipeline with Swagelok

Installation Kit ........................................................................... 40

Figure 23 MMT338 Probe ......................................................................... 42

Figure 24 Sealing of Fitting Body into Process ........................................ 43

Figure 25 Tightening the Clasp Nut .......................................................... 43

Figure 26 Installing the MMT338 Probe through a Ball Valve Assembly . 45

Figure 27 Sampling Cell DMT242SC2 ..................................................... 47

Figure 28 Power Supply Module .............................................................. 48

Figure 29 Galvanic Isolation Module ........................................................ 53

Figure 30 Third Analog Output ................................................................. 53

Figure 31 Third Analog Output Selection ................................................. 54

Figure 32 Relay Module ........................................................................... 56

Figure 33 RS-422/485 Module ................................................................. 57

Figure 34 4-Wire RS-485 Bus .................................................................. 59

Figure 35 2-Wire RS-485 Bus .................................................................. 60

Figure 36 LAN Interface Module ............................................................... 61

Figure 37 WLAN Interface Module ........................................................... 62

Figure 38 Data Logger Module ................................................................. 64

Figure 39 Pinout of the Optional 8-Pin Connector .................................... 65

Figure 40 Basic Display ............................................................................ 67

Figure 41 Graphical Display ..................................................................... 68

Figure 42 Graphical Display with Data Logger ......................................... 69

Figure 43 Main Menus .............................................................................. 70

Figure 44 Display Alarm Active ................................................................ 74

Figure 45 Display Alarms ......................................................................... 75

Figure 46 Modifying an Alarm Limit .......................................................... 75

Figure 47 Service Port Connector and User Port Terminal on Motherboard

.................................................................................................. 79

Figure 48 Connection Example between PC Serial Port and User Port .. 80

Figure 49 Network Interface Menu ........................................................... 84

Figure 50 IP Configuration Menu .............................................................. 84

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Figure 51 Wireless LAN Settings .............................................................. 87

Figure 52 Entering Network SSID ............................................................. 87

Figure 53 Selecting the Wireless Network Type ....................................... 87

Figure 54 Web Configuration Interface for LAN........................................ 90

Figure 55 Opening a Serial Connection .................................................... 91

Figure 56 Opening a Telnet Connection ................................................... 92

Figure 57 Device Information on Display ................................................ 104

Figure 58 Current/Voltage Switches of Output Modules ........................ 116

Figure 59 Measurement-Based Relay Output Modes ............................ 122

Figure 60 FAULT/ONLINE STATUS Relay Output Modes ..................... 124

Figure 61 Relay Indicators on Display .................................................... 126

Figure 62 Serial Interface Settings ......................................................... 133

Figure 63 IP Configuration ...................................................................... 135

Figure 64 Wireless LAN Settings ............................................................ 135

Figure 65 Communication Protocol ........................................................ 135

Figure 66 Modbus Counters ................................................................... 137

Figure 67 Changing the Sensor .............................................................. 144

Figure 68 Error Indicator and Error Message ......................................... 145

Figure 69 Adjustment and Purge Buttons ............................................... 150

Figure 70 Adjustment Menu .................................................................... 151

Figure 71 Selecting Point 1 Reference Type .......................................... 152

Figure 72 Accuracy over Temperature Range........................................ 159

Figure 73 Transmitter Body Dimensions ................................................ 166

Figure 74 WLAN Antenna Dimensions ................................................... 167

Figure 75 MMT332 Probe Dimensions ................................................... 168

Figure 76 MMT337 Probe Dimensions ................................................... 168

Figure 77 MMT337 Probe with (Optional) Swagelok Connector,

Dimensions ............................................................................. 169

Figure 78 MMT338 Probe with Stainless Steel Filter (Oil Filter),

Dimensions ............................................................................. 169

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List of Tables

Table 1 Manual Revisions ..................................................................... 12

Table 2 Application, Location Classes .................................................. 15

Table 3 Quantities Measured by MMT330 ............................................ 19

Table 4 Optional Quantities Measured by MMT330.............................. 19

Table 5 MMT338 Probe Dimensions ..................................................... 42

Table 6 Connecting the Twisted Pair Wires to the Screw Terminals .... 58

Table 7 4-Wire (Switch 3: On) ............................................................... 59

Table 8 2-Wire (Switch 3: Off) ............................................................... 60

Table 9 Observation Periods and Resolution ........................................ 63

Table 10 Wiring of the Optional 8-Pin Connector .................................... 65

Table 11 Periods for Trend and Max/Min Calculations ........................... 68

Table 12 Graph Information Messages in Cursor Mode ......................... 69

Table 13 ALSEL Parameters ................................................................... 77

Table 14 Default Serial Communication Settings for the User Port ........ 80

Table 15 Communication Settings for the Service Port .......................... 82

Table 16 IP Settings for the LAN and WLAN Interfaces ......................... 83

Table 17 Wireless LAN Settings .............................................................. 86

Table 18 Measurement Commands ........................................................ 93

Table 19 Formatting Commands ............................................................. 93

Table 20 Data Recording Commands ..................................................... 94

Table 21 Calibration and Adjustment Commands ................................... 94

Table 22 Setting and Testing the Analog Outputs .................................. 94

Table 23 Setting and Testing the Relays ................................................ 94

Table 24 Other Commands ..................................................................... 95

Table 25 FORM Command Modifiers.................................................... 100

Table 26 Filtering Levels ....................................................................... 103

Table 27 Selection of Output Modes ..................................................... 110

Table 28 Relay State Examples ............................................................ 125

Table 29 Supported Modbus Variants ................................................... 131

Table 30 Error Messages ...................................................................... 146

Table 31 Indicator Led Functions .......................................................... 151

Table 32 Standard Probe Cable Lengths and Approximate

Transmitter Weight (in kg/lb) .................................................. 162

Table 33 Spare Parts and Accessories ................................................. 164

Table 34 Supported Function Codes..................................................... 171

Table 35 MMT330 Modbus Register Blocks ......................................... 172

Table 36 Measurement Data Registers................................................. 174

Table 37 Status Registers ..................................................................... 174

Table 38 Configuration Parameter Registers ........................................ 174

Table 39 Configuration Flag Registers .................................................. 175

Table 40 MMT330 Exception Status Outputs ....................................... 175

Table 41 MMT330 Modbus Diagnostics ................................................ 176

Table 42 MMT330 Modbus Device Identification .................................. 177

Table 43 MMT330 Modbus Exception Responses ............................... 177

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10 ___________________________________________________________________ M210733EN-H

Chapter 1 _________________________________________________________ General Information

CHAPTER 1

GENERAL INFORMATION

This chapter provides general notes for the manual and the product.

About This Manual

This manual provides information for installing, operating, and maintaining Vaisala HUMICAP® Moisture and Temperature Transmitter for Oil MMT330.

Contents of This Manual

This manual consists of the following chapters:

- Chapter 1, General Information, provides general notes for the manual

and the product.

- Chapter 2, Product Overview, introduces the features, advantages, and

the product nomenclature.

- Chapter 3, Installation, provides you with information that is intended

to help you install the product.

- Chapter 4, Operation, contains information that is needed to operate

this product.

- Chapter 5, Modbus, contains information that is needed when operating the transmitter using the Modbus protocol.

- Chapter 6, ppm Conversion, contains information on conversion

models.

- Chapter 7, Maintenance, provides information that is needed in basic

maintenance of the product.

- Chapter 8, Calibration and Adjustment, provides information that is

needed in calibration and adjustment of the product.

- Chapter 9, Technical Data, provides the technical data of the product.

- Appendix A, Modbus Reference, describes the Modbus functions and data of the transmitter.

VAISALA ________________________________________________________________________ 11

User's Guide _______________________________________________________________________

Version Information

Table 1

Manual Code

M210733EN-H

M210733EN-G

M210733EN-F

Manual Revisions

Description

September 2015. This manual. Relative saturation (%RS) added to the available quantities (a w

, T, ppm). High flow filter added to spare part list, HELP command output example corrected (PRES and XPRES removed from list of available commands). Pressure setting removed from Modbus configuration registers.

December 2013. Previous version. Added new command descriptions: ALSEL, AOVER, CON,

DSEND, and MODS. Updated technical specification. Updated FILT command description. Various small corrections.

Previous version. Applicable from transmitter software version 5.10 onward.

Added Modbus protocol. Updated serial line command descriptions. Updated storage temperature range.

Documentation Conventions

Throughout the manual, important safety considerations are highlighted as follows:

WARNING Warning alerts you to a serious hazard. If you do not read and follow instructions very carefully at this point, there is a risk of injury or even death.

CAUTION Caution warns you of a potential hazard. If you do not read and follow instructions carefully at this point, the product could be damaged or important data could be lost.

NOTE Note highlights important information on using the product.

12 ___________________________________________________________________ M210733EN-H


Safety

The Vaisala HUMICAP® Moisture and Temperature Transmitter for Oil

MMT330 delivered to you has been tested for safety and approved as shipped from the factory. Note the following precautions:

WARNING Ground the product, and verify outdoor installation grounding periodically to minimize shock hazard.

CAUTION Do not modify the unit. Improper modification can damage the product, lead to malfunction, or make the product noncompliant with applicable legislation.

ESD Protection

Electrostatic Discharge (ESD) can cause immediate or latent damage to electronic circuits. Vaisala products are adequately protected against

ESD for their intended use. However, it is possible to damage the product by delivering electrostatic discharges when touching, removing, or inserting any objects inside the equipment housing.

To make sure you are not delivering high static voltages yourself:

- Handle ESD sensitive components on a properly grounded and protected ESD workbench. When this is not possible, ground yourself to the equipment chassis before touching the boards. Ground yourself with a wrist strap and a resistive connection cord. When neither of the above is possible, touch a conductive part of the equipment chassis with your other hand before touching the boards.

- Always hold the boards by the edges and avoid touching the component contacts.

VAISALA ________________________________________________________________________ 13

User's Guide _______________________________________________________________________

Recycling

Recycle all applicable material.

Dispose of the unit according to statutory regulations. Do not dispose of with regular household refuse.

Regulatory Compliances

EU Declaration of Conformity

Vaisala HUMICAP® Moisture and Temperature Transmitter for Oil

MMT330 is in conformity with the provisions of the following EU directives:

- Low Voltage Directive

- EMC-Directive

- ROHS Directive

Conformity is shown by compliance with the following standards:

- EN 60950-1

- EN 61326-1: Electrical equipment for measurement, control, and laboratory use – EMC requirements – for use in industrial locations.

- EN 550022: Information technology equipment – Radio disturbance characteristics – Limits and methods of measurement.

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DNV Type Approval


MMT330 is found to comply with Det Norske Veritas' Rules for

Classification of Ships, High Speed & Light Craft and Det Norske

Veritas' Offshore standards.

Applicable tests carried out according to Standard for Certification

No. 2.4, April 2006.

Table 2 Application, Location Classes

Type

Temperature

Humidity

Vibration

EMC

Enclosure

MMT330

B

B

A

B

B/IP65

TYPE APPROVED PRODUCT

CERTIFICATE NO.: A-13529

VAISALA ________________________________________________________________________ 15

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Transmitters with LAN or WLAN Interface

This equipment has been tested and found to comply with the limits for a

Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. Operation is subject to the following two conditions: (1) this device may not cause interference, and

(2) this device must accept any interference, including interference that may cause undesired operation of the device.

This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

Transmitters with WLAN Interface

This device has been designed to operate with a 2 dBi half-wave antenna.

Antennas with a gain greater than 2 dBi are prohibited for use with this device. The antenna impedance is 50 ohms.

To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (EIRP) is not more than that permitted for successful communication.

This Class [B] digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe [B] est conforme à la norme NMB-

003 du Canada.

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Patent Notice


MMT330 is protected by, for example, the following patents and their corresponding national rights:

Finnish patent 98861, French patent 6650303, German patent 69418174,

Japanese patent 3585973, UK patent 0665303, and U.S. patent 5607564.

Trademarks

HUMICAP® is a registered trademark of Vaisala Oyj.

All other trademarks are the property of their respective owners.

Software License

This product contains software developed by Vaisala. Use of the software is governed by license terms and conditions included in the applicable supply contract or, in the absence of separate license terms and conditions, by the General License Conditions of Vaisala Group.

Warranty

Visit our Internet pages for standard warranty terms and conditions: www.vaisala.com/warranty .

Please observe that any such warranty may not be valid in case of damage due to normal wear and tear, exceptional operating conditions, negligent handling or installation, or unauthorized modifications. Please see the applicable supply contract or Conditions of Sale for details of the warranty for each product.

VAISALA ________________________________________________________________________ 17

User's Guide _______________________________________________________________________


18 ___________________________________________________________________ M210733EN-H

Chapter 2 ___________________________________________________________ Product Overview

CHAPTER 2

PRODUCT OVERVIEW

This chapter introduces the features, advantages, and the product nomenclature of the Vaisala HUMICAP® Moisture and Temperature

Transmitter for Oil MMT330.

Introduction to MMT330

Vaisala HUMICAP® Moisture and Temperature Transmitter for Oil

MMT330 provides reliable moisture measurement in a wide range of applications. The easy-to-install on-line MMT330 transmitter is a microprocessor-based instrument for the measurement of moisture in terms of water activity and relative saturation for example in the lubrication of circulation systems or in transformer oil.

The transmitter incorporates a capacitive thin film sensor, the operation of which is based on changes in its capacitance as the thin polymer film absorbs water molecules.

Two analog output signals can be scaled and the measurement ranges changed within certain limits. Analog outputs can be chosen between current and voltage signals. Alternatively, digital outputs RS-232

(standard) or RS-422/485 (optional) can be selected. MMT330 also provides for accurate temperature measurement.

MMT330 can be calibrated against traceable salt solutions and configured in many ways. It can have either a blank cover or a cover with a local display and keypad with which the user can operate the transmitter. Different probe cable lengths are available for varying installation needs, and the power supply voltage can be selected from three alternatives.

Table 3 Quantities Measured by MMT330

Quantity

Water activity

Relative saturation

Temperature

Table 4

Abbreviation Metric Unit Non-Metric Unit

AW

%RS

T ºC ºF

Optional Quantities Measured by MMT330

Quantity Abbreviation Metric Unit Non-Metric Unit ppm (for transformer oil only) H2O ppm ppm

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Basic Features and Options

- Several probes for various applications

- User-friendly display and keypad interface (optional)

- Different probe mounting kits and probe cable lengths

- Transmitter mounting kits for multiple installation purposes

- Support for Modbus serial communications protocol

- USB connectivity for service connections via the optional

USB-RJ45 cable

- Optional modules:

- Isolated power supply

- Power supply module for AC mains power

- RS-422/485-module

- LAN and WLAN interfaces

- Data logger module with real time clock

- Additional analog output module

- Relay module

Structure of the Transmitter

1104-001

Figure 1 Transmitter Body

The numbers refer to Figure 1 above:

1 = Signal + powering cable gland

2 = Cable gland for optional module, or WLAN antenna connector

3 = Cable gland for optional module or AC mains cable

4 = Cover screw (4 pcs)

5 = Display with keypad (optional)

6 = Cover LED

20 ___________________________________________________________________ M210733EN-H


0604-006

Figure 2 Inside the Transmitter

The following numbers refer to Figure 2 above:

1 = Service port (RS-232)

2 = DIP switches for analog output settings

3 = Power supply and signal wiring screw terminals

4 = Relay, data logger, RS-422/485, LAN, or WLAN module

(optional)

5 = Grounding connector

6 = Power supply module (optional)

7 = Relay, data logger, or analog output module (optional)

8 = Humidity probe cable

9 = Galvanic isolation module (optional)

10 = Adjustment buttons with indicator LED. Purge is not available.

VAISALA ________________________________________________________________________ 21

User's Guide _______________________________________________________________________

Probe Options

0509-143

Figure 3 Probe Options


1 = MMT332 for high-pressure applications

2 = MMT337 small pressure-tight probe

3 = MMT338 adjustable probe for pressurized pipelines

(40 bar, ball valve)

For probe cable lengths, see Table 32 on page 162.

22 ___________________________________________________________________ M210733EN-H


Typical Applications

Methods Used for Measuring Moisture in Oil

The MMT330 transmitter can measure water in oil in terms of water activity (a w

) and relative saturation (%RS). With the help of internal oil solubility coefficients, MMT330 is also able to output oil moisture in ppm (by default supported only for mineral transformer oil).

Water activity indicates the amount of oil in the scale of 0 … 1 a w

. In this scale, 0 a w

is an indication of completely water free oil, and 1 a w

an indication of oil fully saturated with water (water is present in free form).

Relative saturation indicates the amount of water oil in the scale of

0 ... 100 %RS. In this scale, 0 %RS is an indication of completely water free oil and 100 %RS an indication of oil fully saturated with water

(water is present in free form).

The most important feature which distinguishes the measurement of water activity (a w

) and relative saturation (%RS) from the traditional measurement of absolute water content (in ppm) is that the saturation point remains stable regardless of the oil type or the aging of oil, additives used, etc. As water activity exceeds 0.9 a w

(or relative saturation exceeds 90 %RS) in any system, there is a risk for segregation

(especially if the temperature decreases).

Water activity and relative saturation are used for alarming at the point of

>0.9 a w

/ >90 %RS that the risk for free water in the system is obvious.

The most important advantages of this system are the fact that water activity and relative saturation are immune to the aging of oil and to additives, and that the MMT330 transmitter can be used for continuous on-line measurements. In addition, MMT330 can be calibrated against salt solutions and no reference oils are needed.

Lubrication Oil in Paper Machines

Typically, a paper machine contains two or three separate lubrication systems. Usually, one is located at the wet end and the other at the dry end. There is a certain amount of free moisture constantly present which means that there is a risk of this moisture becoming into contact with the machine bearings. The most common reasons for the entrance of water are an inadequate sealing of the housing and cleaning with high pressure.

However, accidental leakages from oil coolers and other equipment may also cause damage. In paper machines, the oil should absorb water while lubricating the bearings and then release this water when collected into the reservoir.

VAISALA ________________________________________________________________________ 23

User's Guide _______________________________________________________________________

It is to be noted that bearings should never be exposed to oils that have a high water content; this is especially important during standstill because the risk for corrosion process increases as the oil temperature decreases.

It is essential to monitor the water content and keep it on a suitable level.

When measuring the water content of oil in paper machines, it would be useful to measure the water activity before an oil reservoir and from a pressure line flow. This way, the performance of dehumidifiers can be kept under control to ensure that no free water reaches the bearings.

Transformer Oil

The determination of moisture in oil is an essential part of a comprehensive transformer maintenance program. Aging and deterioration increase the capacity of oil to absorb water. The primary interest in transformers is to measure the water not in oil but in the cellulosic insulation around the transformer windings. Heating and cooling have a considerable effect on moisture levels in oil. While temperature raises, the paper insulation of transformers tends to loose moisture which is absorbed by the oil surrounding it. Saturation level is thus a true indicator of moisture present. The MMT330 method provides for a reliable detection of the aging of oil and possible leakages.

Oil immersed transformers rely on the oil for cooling, protection from corrosion and as an important component of their insulation. Excessive moisture contents in oil causes accelerated ageing of the insulation materials and reduces their dielectric strength. In extreme cases this can result in arcing and short circuits within the windings. Accurate moisture measurements can also warn about leaks in the oil system, as water is absorbed from the surrounding air.

Heating and cooling of a transformer effect moisture levels in oil. This is due to the fact that the water solubility of oil is temperature dependent. In

general, water solubility increases as temperature rises: see Figure 4 on page 25. Changes in temperature affect also on water desorption of the

paper insulation around the transformer windings. Desorption of water from the insulation increases as temperature rises and the surrounded oil absorbs desorbed water. Moisture level in oil is thus a true indicator of moisture present in the paper insulation.

In addition, it must be noted that capacity of oil to absorb water depends both on the chemical structure of the oil and the additives.

24 ___________________________________________________________________ M210733EN-H


WATER SOLUBILITY IN MINERAL TRANSFORMER OIL

10000

1000

100 average water solubility range of variation due to oil type range of variation due to oil type

10

0 10

Figure 4

20 30 40 50

Temperature (°C)

60 70 80 90 100

0510-029

The Water Solubility of Transformer Oils versus

Temperature

The margins show the range of variation of water solubility found in mineral oils.

VAISALA ________________________________________________________________________ 25

User's Guide _______________________________________________________________________


26 ___________________________________________________________________ M210733EN-H

Chapter 3 ________________________________________________________________ Installation

CHAPTER 3

INSTALLATION

This chapter provides you with information that is intended to help you install the product.

Mounting the Housing

Standard Mounting

Mount the housing by fastening the transmitter to the wall with 4 screws, for example, M6 (not provided).

Figure 5

0804-066

Standard Mounting Dimensions (in mm/inch)

VAISALA ________________________________________________________________________ 27

User's Guide _______________________________________________________________________

Wall Mounting with Wall Mounting Kit

When mounting with wall mounting kit the mounting plate (Vaisala order code 214829) can be installed directly on wall or onto a standard wall box (also US junction box). When wiring through back wall, remove the plastic plug from the wiring hole in the transmitter before mounting.

Figure 6

0503-004

Mounting with Wall Mounting Kit


1 = Plastic mounting plate

2 = Mount the plate to wall with 4 screws M6 (not provided)

3 = Arched side up

4 = Fasten MMT330 to the mounting plate with 4 fixing screws M3

(provided)

5 = Holes for wall/junction box mounting

183 (7.20)

133 (5.24)

Thickness

9.5 (0.37)

59 (2.32)

Figure 7

0804-065

Dimensions of the Plastic Mounting Plate (mm/inch)

28 ___________________________________________________________________ M210733EN-H


Mounting with DIN Rail Installation Kit

DIN rail installation kit includes a wall mounting kit, 2 clip-fasteners, and 2 screws M4 x 10 DIN 7985 (Vaisala order code: 215094).

1. Attach two spring holders to the plastic mounting plate by using the screws provided in the installation kit.

2. Fasten MMT330 to the plastic mounting plate with 4 screws

(provided).

3. Press the transmitter onto the DIN rail so that the clip-fasteners snap into the rail.

Figure 8

0503-002

Mounting with DIN Rail Installation Kit

Pole Installation with Installation Kit for

Pole or Pipeline

Installation kit for pole or pipeline (Vaisala order code: 215108) includes the metal mounting plate and 4 mounting nuts for pole mounting. When mounting, the arrow in the metal mounting plate must point upward, see

Figure 11 on page 30.

Figure 9 Vertical Pole

0503-006


1 = Fixing brackets (2 pcs) M8 (provided) for 30 ... 102 mm poles

2 = Mounting nuts M8 (4 pcs)

VAISALA ________________________________________________________________________ 29

User's Guide _______________________________________________________________________

0503-007

Figure 10 Horizontal Pole

The following number refers to Figure 10 above:

1 = Mounting nuts M8 (4 pcs)

Metal mounting plate is included in rain shield with installation kit and installation kit for pole or pipeline.

0503-041

Figure 11 Mounting with Metal Wall Mounting Plate


1 = Mount the plate to wall with 4 screws M8 (not provided)

2 = Fasten MMT330 to the mounting plate with 4 fixing screws

M6 (provided)

3 = Note the position of the arrow when mounting. This side must be up when mounting.

30 ___________________________________________________________________ M210733EN-H


0509-051

Figure 12 Dimensions of Metal Mounting Plate (mm/inch)

Mounting Rain Shield with Installation Kit

The rain shield is highly recommended for outdoor installations, especially for transmitters with the display/keypad option.

0503-008

Figure 13 Mounting Rain Shield with Installation Kit


1 = Fasten the rain shield with installation kit (Vaisala order code:

215109) to the metal mounting plate with 2 (M6) mounting screws (provided)

2 = Fasten the mounting plate with rain shield with installation kit to the wall or to the pole (see pole installation)

3 = Fasten the MMT330 to the mounting plate with 4 fixing screws

(provided)

VAISALA ________________________________________________________________________ 31

User's Guide _______________________________________________________________________

Panel Mounting Frame

To enable a neat and dirt free embedded installation of the transmitter, a panel mounting frame is available as an option (Vaisala order code:

216038). The frame is a thin, flexible plastic frame for the transmitter, with adhesive tape on one side.

The frame is used to hide any rough edges of the installation hole, and provide a more finished look. Note that the panel mounting frame is not intended to bear the weight of the transmitter, and does not include any mounting supports.

Use the panel mounting frame as follows:

1. Use the frame as a template to mark the required size for the installation hole in the panel.

2. Cut the hole in the panel.

3. Mount the transmitter through the panel with suitable supports.

4. Remove the paper protecting the adhesive tape on the frame, and

attach the frame around the transmitter. Refer to Figure 14 on page

32.

Figure 14 Panel Mounting Frame


1 = Panel (not included)

2 = Panel mounting frame

0704-002

32 ___________________________________________________________________ M210733EN-H


0804-083

Figure 15 Panel Mounting Dimensions (mm/inch)

Wiring

Cable Bushings

A single electrical cable with a screen and three to ten wires is recommended for power and analog/serial connections. The cable diameter should be 8 ... 11 mm. The number of cable bushings depends on the transmitter options. See the following recommendations for the cable bushings:

0503-010

Figure 16 Cable Bushings


1 = Cable for signal/powering Ø8 ... 11 mm

2 = Cable for optional module Ø8 ... 11 mm

3 = Cable for optional power supply module Ø8 ... 11 mm

VAISALA ________________________________________________________________________ 33

User's Guide _______________________________________________________________________

NOTE When there is high electric noise level (for example, near powerful electric motor) in the operating environment it is recommended to use shielded cable or take care that the signal cables are separated from other cables.

Grounding the Cables

Ground the screen of the electrical cable properly to achieve the best possible EMC performance.

0605-027

Figure 17 Grounding the Screen of Electrical Cable

34 ___________________________________________________________________ M210733EN-H


Refer to Figure 17 on page 34 when performing the procedure below.

1. Cut back outer sheath to desired length.

2. Cut back screen braiding or screen foil to dimension X.

3. Push the domed cap nut (item 1) and the seal insert with contact socket of the gland (item 2+3) onto the cable as shown in the diagram.

4. Bend over the screen braiding or screen foil by about 90º

(item 4).

5. Push the seal insert with the contact socket of the gland

(item 2+3) up to the screen braiding or screen foil.

6. Mount the lower part (item 5) on the housing.

7. Push the seal with the contact socket of the gland (item 2+3) into the lower part (item 5).

8. Fasten the domed cap nut (item 1) onto the lower part (item 5).

Grounding the Transmitter Housing

In case you need to ground the transmitter housing, the grounding

connector is found inside the housing; see Figure 2 on page 21.

Make sure that the probe is connected to the same potential as the housing. Make sure that different groundings are made to the same potential. Otherwise harmful ground currents may be generated.

If it is needed to have galvanic isolation of the power supply line from the output signals, MMT330 can be ordered with optional galvanic isolation module. This module prevents harmful grounding loops.

VAISALA ________________________________________________________________________ 35

User's Guide _______________________________________________________________________

Signal and Power Supply Wiring

When connecting transmitter with 8-pin connector, see section 8-Pin

Connector on page 65. When wiring the power supply module, see

section Power Supply Module on page 48.

0506-028

Figure 18 Screw Terminal Block on Motherboard


1 = Power supply terminals 10 ... 35 VDC, 24 VAC

2 = User port (RS-232 terminals)

3 = Analog signal terminals

WARNING Make sure that you connect only de-energized wires.

36 ___________________________________________________________________ M210733EN-H


1. Open the transmitter cover by taking out the four cover screws.

2. Insert the power supply wires and signal wires through the cable bushing in the bottom of the transmitter; see the grounding instructions in the previous sections.

3. Connect the analog output cables to terminals: Ch1 +, Ch1-, Ch2+,

Ch2-. Connect the RS-232 user port cables to terminals RxD, GND and TxD. For more information about the RS-232 connection refer

to section Serial Line Communication on page 78.

4. When wiring the optional modules, see the corresponding section for instructions:

- RS-422/485 Interface on page 56

- Relays on page 55

- Third Analog Output on page 53

- LAN Interface on page 61

- WLAN Interface on page 62

5. Connect the power supply wires to the connectors: POWER

10...35V+ 24V~ (+) and (-) terminals. If you are using 24 VAC power supply, see the note below before connecting the supply wires.

6. Turn on the power. The indicator LED on the cover is lit continuously during normal operation.

7. Close the cover and replace the cover screws. The transmitter is ready for use.

VAISALA ________________________________________________________________________ 37

User's Guide _______________________________________________________________________

Connections to a 24 VAC Power Supply

Separate floating supply for each transmitter is recommended (see the

upper part of Figure 19 on page 38). If you have to connect several

transmitters or other instruments to one AC supply, the phase (~) must always be connected to the (+) connector of each transmitter (see the

lower part of Figure 19).

CAUTION 24 VAC POWER SUPPLY USE

To prevent fire and/or damage, if either 24 VAC wire is grounded or connected to a "-", "0", or "GND" terminal of any other device, you must connect the same wire on the "-" terminal also on this instrument.

Figure 19 Connections to 24 VAC Power Supply

0703-041

38 ___________________________________________________________________ M210733EN-H


MMT332 for High-Pressure Applications

The MMT332 probe is a small, pressure-tight probe equipped with an installation flange. It is suitable for high-pressure applications (up to

250 bar).

0510-030

Figure 20 MMT332 Installation


1 = Screw, 4 pcs, hexagon socket head (provided)

2 = O-ring (provided)

3 = Threaded sleeve (not provided)

MMT337 Small Pressure-Tight Probe

The MMT337 is ideal for tight spaces with a threaded connection. The small probe is installed using the threaded fitting bodies; see next section.

VAISALA ________________________________________________________________________ 39

User's Guide _______________________________________________________________________

MMT337 Probe with Swagelok Connector for Tight-place Installations

Swagelok installation kit for the MMT337 probe includes Swagelok connector with ISO3/8" thread ( Vaisala order code: SWG12ISO38) or

NPT1/2" thread (Vaisala order code:SWG12NPT12).

0509-144

Figure 21 MMT337 Probe with Swagelok Installation Kit

0509-150

Figure 22 MMT337 Probe Installation to Pipeline with Swagelok

Installation Kit


1 = Probe

2 = Duct connector

3 = ISO3/8" or NPT1/2" thread

4 = Swagelok connector

5 = Ferrules

6 = Upper edge of the connector nut

7 = Upper edge of the probe

40 ___________________________________________________________________ M210733EN-H


1. Preparing installation. The connector options are the following: a. R3/8" ISO (Swagelok code SS-12M0-1-6RTBT) b. 1/2" NPT (Swagelok code SS-12M0-1-8BT)

Note that the connector inner diameters extend for Ø12 mm probe.

2. Probe position. Before the final tightening check that the upper edge of the connector nut is in line with the upper edge of the probe. Otherwise the sealing may not be gas tight.

3. Gas tight sealing a. Turn the connector nut finger tight and draw a vertical mark on the nut and the fitting body. b. Be sure that the probe position follows step 2. c. Tighten the connector nut with a wrench 1 and 1/4 turns

(360º +90º) with the help of the marks you drew. The connector has now a gas tight connection to the probe. Excess tightening can damage the probe. d. Connector can be disconnected and re-installed. In reinstallation first turn the connector nut finger tight and then with wrench 1/4 turn (90º).

Use teflon tape or thread sealant to seal the connection between the

Swagelok connector and the process; see Figure 24 on page 43.

VAISALA ________________________________________________________________________ 41

User's Guide _______________________________________________________________________

MMT338 for Pressurized Pipelines

Due to the sliding fit, the MMT338 is easy to install into and remove from the pressurized process. The probe is especially suitable for the measurements in pipelines. The probe is adjustable, with two length options. The installation is easy due to the ball valve installation kit; see below.

0510-028

Figure 23 MMT338 Probe


1 = Clasp nut, 24 mm hex nut

2 = Fitting body, 27 mm hex head

The following two fitting body options are available:

- Fitting Body ISO1/2 solid structure

- Fitting Body NPT1/2 solid structure

Table 5

Probe type

Standard

Optional

MMT338 Probe Dimensions

Probe Dimension

178 mm

400 mm

Adjustment Range

120 mm

340 mm

42 ___________________________________________________________________ M210733EN-H


0507-025

Figure 24 Sealing of Fitting Body into Process

Tightening the Clasp Nut

1. Adjust the probe to a suitable depth according to the type of installation.

2. Tighten the clasp nut first manually.

3. Mark the fitting screw and the clasp nut.

4. Tighten the nut a further 50 ... 60º (ca. 1/6 turn) with a wrench. If you have suitable torque spanner, tighten the nut to max 45 ±5 Nm

(33 ±4 ft-lbs). See notes on the following page.

Figure 25

0505-276

Tightening the Clasp Nut


1

2

3

4

= Probe

= Clasp nut

= Fitting screw

= Pen

VAISALA ________________________________________________________________________ 43

User's Guide _______________________________________________________________________

CAUTION Take care not to damage the probe body. A damaged body makes the probe less tight and may prevent it from going through the clasp nut.

CAUTION In pressurized processes it is essential to tighten the supporting nuts and screws very carefully to prevent loosening of the probe by the action of pressure.

NOTE Take care not to over tighten the clasp nut to avoid difficulties when opening it.

Ball Valve Installation Kit for MMT338

The ball valve installation kit (Vaisala order code: BALLVALVE-1) is preferred when connecting the probe to a pressurized process or pipeline.

Use the ball valve set or a 1/2" ball valve assembly with a ball hole of

ø14 mm or more. If you install the probe (ø12 mm) in a process pipe, please note that the nominal size of the pipe must be at least 1 inch

(2.54 cm). Use the manual press handle to press the probe into the pressurized (< 10 bar) process or pipeline.

44 ___________________________________________________________________ M210733EN-H


NOTE

NOTE

0507-043

Figure 26 Installing the MMT338 Probe through a Ball Valve

Assembly

The following numbers refer to Figure 26:

1 = Manual press tool

2 = Handle of the ball valve

3 = Probe

4 = Process chamber or pipeline

5 = Groove on the probe indicates the upper adjustment limit

6 = Filter

7 = Ball of the ball valve

8 = Fitting screw

The probe can be installed in the process through the ball valve assembly provided that the process pressure is less than 10 bars. This way, the process does not have to be shut down when installing or removing the probe. However, if the process is shut down before removing the probe, the process pressure can be max. 20 bars.

When measuring temperature dependent quantities make sure that the temperature at the measurement point is equal to that of the process, otherwise the moisture reading may be incorrect.

VAISALA ________________________________________________________________________ 45

User's Guide _______________________________________________________________________

Follow the steps below to install the MMT338 probe through a ball valve assembly. After the installation, the probe should be sitting in the process

chamber or pipeline as shown in Figure 26 on page 45.

1. Shut down the process if the process pressure is more than 10 bars.

If the pressure is lower there is no need to shut down the process.

2. Close the ball valve.

3.

Seal the threads on the fitting body; refer to Figure 24 on page 43.

4. Attach the fitting body to the ball valve and tighten it.

5. Slide the clasp nut of the probe toward the filter, as far as it will go.

6. Insert the probe to the fitting body, and manually tighten the clasp nut to the fitting body.

7. Open the ball valve.

8. Push the probe through the ball valve assembly into the process. If the pressure is high, use the pressing handle that is provided with the probe. If you push the probe hard without using the handle, you may damage the cable.

Note that the probe must be pushed so deep that the filter is completely inside the process flow.

9. Mark the fitting screw and the clasp nut.

10. Tighten the clasp nut with a fork spanner a further 50 ... 60º

(ca. 1/6 turn). If you have a suitable torque spanner, tighten the nut

to max 45 ± 5 Nm (33 ± 4 ft-lbs). Refer to Figure 25 on page 43.

NOTE Take care not to tighten the clasp nut more than 60° to avoid difficulties when opening it.

If you wish to remove the probe from the process, note that you have to pull the probe out far enough. You cannot close the valve if the groove on the probe body is not visible.

46 ___________________________________________________________________ M210733EN-H


Sampling Cell for MMT338

It may be necessary to use a sampling cell if the MMT338 probe cannot be installed directly into the process pipe, for example, if the pipe is too small for the probe. Then, a by-pass sampling line may be feasible.

Sampling Cell with Swagelok Connectors (Vaisala order code:

DMT242SC2) is available as an optional accessory.

0511-108

Figure 27 Sampling Cell DMT242SC2


1 = Male pipe weld connector Swagelok 1/4"

2 = G1/2"

VAISALA ________________________________________________________________________ 47

User's Guide _______________________________________________________________________

Optional Modules

Power Supply Module

The AC (mains) power connection may be connected to the power supply module only by an authorized electrician. A readily accessible disconnect device shall be incorporated in the fixed wiring.

0506-027

Figure 28 Power Supply Module


1 = Connect AC (mains) voltage wires to these terminals

2 = Grounding terminal

3 = In case the module is not installed in the factory, connect wires from these terminals to the POWER 10 ... 35V 24V terminals in the screw terminal of the motherboard.

4 = +

5 = -

48 ___________________________________________________________________ M210733EN-H


Installation

1. Disconnect the power and open the transmitter cover.

2. Remove the protective plug from the cable gland and thread the wires. In case the power supply module is installed in the factory, continue with the step 5.

3. To attach the module fasten the power module to the bottom of the

housing with four screws. See the position in Figure 2 on page 21.

4. Connect the wires from the terminals of the power supply module marked with + and - to the terminals POWER 10... 35 V 24V on the motherboard of the transmitter.

5. Connect the AC mains voltage wires to the power supply module terminals marked with N and L.

6. Attach the grounding wire to the grounding terminal on the righthand side of the transmitter.

7. Connect the power. The LED on the cover of the transmitter is lit continuously during normal operation.

WARNING Do not detach the power supply module from the transmitter when the power is on.

WARNING Do not connect the mains power to power supply module when it is not installed in the transmitter.

WARNING Always connect protective ground terminal.

VAISALA ________________________________________________________________________ 49

User's Guide _______________________________________________________________________

Warnings

Dieses Produkt entspricht der Niederspannungsrichtlinie (2006/95/EWG).

- Das Netzmodul darf nur von einem dazu befugten Elektriker angeschlossen werden.

- Trennen Sie das Netzmodul nicht vom Messwertgeber, wenn der Strom eingeschaltet ist.

- Verbinden Sie das Netzmodul nur mit der Spannungsquelle, wenn es im Messwertgeber

MMT330 montiert ist.

- Das Erdungskabel muss zum Schutz immer angeschlossen sein.

Ce produit est conforme à la Directive relative à la Basse Tension (2006/95/EEC).

- Seul un électricien compétent est habilité à raccorder le module d’alimentation au secteur.

- Ne pas détacher le module d’alimentation du transmetteur lorsqu’il est en service.

- Ne pas raccorder le secteur au module d’alimentation lorsque celui-ci n’est pas installé dans le transmetteur MMT330.

- Toujours raccorder un bornier de protection à la terre.

Tämä tuote on pienjännitedirektiivin (2006/95/EEC) mukainen.

- Vaihtovirtaliitännän saa kytkeä tehonsyöttömoduuliin ainoastaan valtuutettu sähköasentaja

- Älä irrota tehonsyöttömoduulia lähettimestä, kun virta on kytkettynä.

- Älä kytke verkkovirtaa tehonsyöttömoduuliin, jos kyseistä moduulia ei ole asennettu

MMT330 lähettimeen.

- Kytke aina maadoitusliittimet.

Denna produkt uppfyller kraven i direktivet om lågspänning (2006/95/EEC).

- Nätanslutningen (växelströmsanslutningen) får bara anslutas till strömförsörjningsmodulen av en behörig elektriker.

- Ta inte loss strömförsörjningsmodulen från mätaren när strömmen är på.

- Anslut inte strömförsörjningsmodulen till nätet när den inte är installerad i MMT330-mätaren

- Anslut alltid en skyddande jordningsplint.

Questo prodotto è conforme alla Direttiva sul basso voltaggio (2006/95/CEE).

- La conduttura elettrica può essere collegata al modulo di alimentazione elettrica soltanto da un elettricista autorizzato.

- Non staccare l’alimentazione elettrica dal trasmettitore quando è acceso.

- Non collegare la corrente elettrica al modulo di alimentazione elettrica se non è installato nel trasmettitore MMT330.

- Collegare sempre il morsetto protettivo a terra!

50 ___________________________________________________________________ M210733EN-H


Dette produkt er i overensstemmelse med direktivet om lavspænding

(2006/95/EØS).

- Netstrømskoblingen til må kun tilsluttes strømforsyningsmodulet af en autoriseret elinstallatør

- Strømforsyningsmodulet må ikke løsgøres fra senderen, mens spændingen er sluttet til.

- Slut ikke netspændingen til strømforsyningsmodulet, når det ikke er installeret i MMT330- senderen

- Forbind altid den beskyttende jordklemme!

Dit product voldoet aan de eisen van de richtlijn 2006/95/EEG

(Laagspanningsrichtlijn).

- De stroom kan aan de stroomtoevoer module aangesloten worden alleen door een bevoegde monteur.

- Het is niet toegestaan de stroomtoevoer module van de transmitter los te koppelen wanneer de stroom aan is.

- Het is niet toegestaan de stroom aan de stroomtoevoer module aan te sluiten als deze niet in een MMT330-transmitter is gemonteerd.

- Altijd beschermend aardcontact aansluiten!

Este producto cumple con la directiva de bajo voltaje (2006/95/EEC).

- La conexión de la alimentación principal al módulo de alimentación sólo puede realizarla un electricista autorizado.

- No desenchufe el módulo de alimentación del transmisor cuando esté encendido.

- No conecte la alimentación principal al módulo de alimentación cuando no esté instalado en el transmisor MMT330.

- Conecte siempre el terminal de protección de conexión a tierra.

See toode vastab madalpinge direktiivile (2006/95/EEC).

- Voolukaabli võib vooluallika mooduli külge ühendada ainult volitatud elektrik.

- Ärge ühendage vooluallika moodulit saatja küljest lahti, kui vool on sisse lülitatud.

- Ärge ühendage voolukaablit vooluallika mooduli külge, kui seda pole MMT330-tüüpi saatjasse paigaldatud.

- Ühendage alati kaitsev maandusklemm!

Ez a termék megfelel a Kisfeszültségű villamos termékek irányelvnek

(2006/95/EGK).

- A hálózati feszültséget csak feljogosított elektrotechnikus csatlakoztathatja a tápegységmodulra.

- A bekapcsolt távadóról ne csatolja le a tápegységmodult.

- Ne csatlakoztassa a hálózati feszültséget a tápegységmodulhoz, ha az nincs beépítve a

MMT330 távadóba.

-

Feltétlenül csatlakoztasson földelő védőkapcsot!

VAISALA ________________________________________________________________________ 51

User's Guide _______________________________________________________________________

Šis produktas atitinka direktyvą dėl žemos įtampos prietaisų (2006/95/EB).

-

Elektros tinklą su energijos tiekimo moduliu sujungti gali tik įgaliotas elektrikas.

-

Niekada neišimkite energijos tiekimo modulio iš siųstuvo, kai maitinimas yra įjungtas.

-

Jei energijos tiekimo modulis nėra įmontuotas MMT330 siųstuve, nejunkite jo į elektros tinklą.

- Visada pri junkite prie apsauginės įžeminimo jungties!

Šis produkts atbilst Zemsprieguma direktīvai (2006/95/EEC).

-

Strāvas pieslēgumu var pieslēgt pie barošanas avota moduļa tikai autorizēts elektriķis.

-

Neatvienot barošanas avota moduli no raidītāja, kad pieslēgta strāva.

-

Nepievienot strāvu barošanas avota modulim, ja tas nav uzstādēts MMT330 raidītājā

-

Vienmēr pievienot aizsargājošu iezemētu terminālu !

Ten produkt spełnia wymogi Dyrektywy niskonapięciowej (2006/95/EEC).

-

Napięcie zasilające powinno zostać podłączone do modułu zasilacza tylko przez wykwalifikowanego elektryka.

-

Nie wolno odłączać modułu zasilacza od nadajnika, kiedy zasilanie jest włączone.

-

Nie wolno podłączać napięcia zasilającego do modułu zasilacza, kiedy nie jest on zamontowany w nadajniku MMT330.

-

Zawsze należy podłączać zabezpieczający zacisk uziemiający!

Tento výrobek vyhovuje Směrnici pro nízké napětí (

2006/95/ EEC).

-

Připojení síťového napájení k napájecímu modulu smí provádět pouze oprávněný elektrikář.

- Neodpojujte napájecí m odul od snímače při zapnutém napájení.

-

Nepřipojujte síťové napájení k napájecímu modulu, pokud není instalován ve snímači

MMT330.

- Vždy zapojte ochrannou zemnící svorku!

52 ___________________________________________________________________ M210733EN-H


Galvanic Isolation for Power Supply

If galvanic isolation of the power supply line from the output signals is needed, MMT330 can be ordered with optional galvanic isolation module. This module prevents harmful grounding loops.

NOTE Galvanic isolation module is not needed when using the AC power supply module. Note also that these two modules are physically incompatible to be installed at the same time. If both modules are installed, there is no room to close the transmitter cover completely.

0506-030

Figure 29 Galvanic Isolation Module

Number refers to Figure 29 above:

1 = Galvanic isolation module

Third Analog Output

0503-030

Figure 30 Third Analog Output


1 = Flat cable pins

2 = Screw terminals for signal line

3 = DIP switches to select the output mode and range

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User's Guide _______________________________________________________________________

NOTE

Installation and Wiring

1. Disconnect the power. In case the analog output module is installed in the factory, continue with the step 4.

2. To attach the module, open the transmitter cover and fasten the analog output module to the position for MODULE 2 with four

screws. Refer to Figure 2 on page 21.

3. Connect the flat cable between the analog output module and the motherboard's connector for MODULE 2.

4. Take out the protective plug from the cable gland and thread the wires.

5. Connect the wires to the screw terminals marked with Ch+ and

Ch- .

6. Select the current/voltage output by setting ON either of the switches 1 or 2.

7. Select the range by setting ON one of the switches 3...7.

Only one of the switches 1 ... 2 can be ON at a time.

Only one of the switches 3 ... 7 can be ON at a time.

0508-029

Figure 31 Third Analog Output Selection

8. Connect the power.

9. Select the quantity and scale the channel via the serial line or

display/keypad, see section Analog Output Quantities on page 117.

For testing the analog output, see Section Analog Output Tests on

page 119. For fault indication setting, see section Analog Output

Fault Indication Setting on page 120.

54 ___________________________________________________________________ M210733EN-H


Relays

MMT330 can be equipped with one or two configurable relay modules.

Each module contains two configurable relays. See the contact ratings in

section Technical Specifications of Optional Modules on page 162.


1. Disconnect the power and open the transmitter cover. In case the relay-module is installed in the factory, continue with step 5.

2. To attach the module fasten the relay module to the bottom of the

housing with four screws. See the position in Figure 2 on page 21.

3. When the mains power is in use attach the grounding wire to the grounding terminal.

4. Connect the flat cable between the relay module and the

MODULE 1 or MODULE 2 pins of the motherboard.

5. Take out the protective plug from the cable gland and thread the relay wires.

6. Connect the wires to the screw terminals: NO, C, and NC.

CAUTION For installations in the USA: If your transmitter has both the relay module and a LAN or WLAN module, the maximum voltage you are allowed to connect to the relay module is 50 V.

Selecting the Activation State of the Relay

The middlemost C terminal and either one of the terminals NO/NC must be connected. The polarity can be freely selected.

NO Normally open

C Common relay

NC Normally closed

Relay NOT activated: C and NC outputs are closed, NO is open

Relay IS activated: C and NO outputs are closed, NC is open.

Connect the power and close the cover.

NOTE For instructions on how to operate the relay (for example, selecting quantity for the relay output and setting the relay setpoints), see section

Operation of Relays on page 121.

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User's Guide _______________________________________________________________________

0503-037

Figure 32 Relay Module


1 = Indication led for the relay 1 or 3

2 = Relay test buttons

3 = Flat cable pins

4 = Indication led for relay 2 or 4

WARNING The relay module may contain dangerous voltages even if the transmitter power has been disconnected. Before opening the transmitter you must switch off both the transmitter and the voltage connected to the relay terminals.

WARNING Do not connect the mains power to relay unit without grounding the transmitter.

RS-422/485 Interface

The RS-422/485 interface enables communication between an RS-485 network and the MMT330 transmitter. The RS-485 interface is isolated and offers a maximum communications rate of 115 200 bits/s. (For maximum bus length of 1 km, use bit rate 19200 b/s or less.)

When selecting an RS-232 to RS-485 converter for the network, avoid self-powered converters, as they do not necessarily support the needed power consumption.

NOTE RS-232 User Port on MMT330 main board cannot be used and connected when RS-485 module is connected. Service port operates normally.

56 ___________________________________________________________________ M210733EN-H


2

3

NOTE

1

1102-023

Figure 33 RS-422/485 Module

The following numbers refer to Figure 33:

1 = Flat cable pins

2 = Selection switches

3 = Screw terminals for wiring

The data lines on earlier versions of the RS-422/485 module are marked

A and B instead of D1+ and D0-. When the line is idle, D1+ has positive voltage compared to D0-.

When connecting the module, be prepared to swap the D1+ and D0- wires if you have a communication problem.


1. Disconnect the power. In case the RS-422/485 module is installed in the factory, continue with the item 4.

2. To attach the module, open the transmitter cover and fasten the RS-

422/485 module to the bottom of the housing with four screws.

3. Connect the flat cable between the RS-422/485 module and the motherboard's pins MODULE1 (Communications).

4. Pull the network wirings through the cable gland.

5. Connect the twisted pair wires (1 or 2 pairs) to the screw terminals

as presented in Table 6 on page 58:

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User's Guide _______________________________________________________________________

NOTE

Table 6 Connecting the Twisted Pair Wires to the Screw

Terminals

Screw Terminal Data line

(2-wire RS-485)

1

2

3

4

5

(not connected)

(not connected)

Common

D0-

D1+

Data line

(4-wire RS-422/485)

Rx D0-

Rx D1+

Common

Tx D0-

Tx D1+

To avoid problems in the RS-422/485 network, the Common terminal should be wired to the corresponding terminals of the other devices.

6. If you use RS-422 or RS-485 to connect just one MMT330 to a master computer, enable the internal termination of MMT330 by switching switches 1 and 2 ON. Make sure that the master's end of the line is also terminated (by using master's internal termination or with a separate terminator).

If you are connecting many transmitters to the same RS-485 bus, make sure that switches 1 and 2 are OFF and terminate the bus with separate terminators at both ends. This allows removing any transmitter without blocking the bus operation.

If you use the internal termination of the transmitter at the end of the RS-485 bus (instead of using separate terminators) removing that transmitter will block the bus operation.

7. Use the bus type (4-wire/2-wire) to select the selection switch 3.

In 4-wire mode RS-485 master sends data to the MMT330 through terminals Rx D1+ and Rx D0- and receives data from MMT330 through terminals Tx D1+ and Tx D0-.

58 ___________________________________________________________________ M210733EN-H


Rx D0-

Rx D1+

Common

Tx D0-

Tx D1+

RS485 bus master

Stub

Termination

120R

Termination

120R

Common line

Junction box

Address NN

Switch

Term off

Term off

2/4 wire on

RS422 off

Tx D0-

Tx D1+

Common

Rx D0-

Rx D1+

RS485-1

Stub

Common line

Twisted pair

Address MM

Switch

Term off

Term off

2/4 wire on

RS422 off

Tx D0-

Tx D1+

Common

Rx D0-

Rx D1+

RS485-1

Stub

120R

Baud > 19.2K Stub < 10ft, 3m

Baud > 112K Stub < 1ft, 0.3m

Figure 34 4-Wire RS-485 Bus

Termination

Table 7

RS-485 master

Tx D1+

Tx D0-

Rx D1+

Rx D0-

4-Wire (Switch 3: On)

Data

→

→

←

←

MMT330

Rx D1+

Rx D0-

Tx D1+

Tx D0-

120R

Termination

Twisted pair

Junction box

Junction box

1102-028

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User's Guide _______________________________________________________________________

Termination

120R

D0-

D1+

Common

Junction box

Stub

RS485 bus master

Twisted pair Common line

Address NN

Switch

Term off

Term off

2/4 wire off

RS422 off

Common

D0-

D1+

RS485-1

Stub

Junction box

Twisted pair Common line

Address MM

Switch

Term off

Term off

2/4 wire off

RS422 off

Common

D0-

D1+

RS485-1

Stub 120R

Termination

Junction box

1102-027

Figure 35 2-Wire RS-485 Bus

Table 8

RS-485 master

D1+

D0-

2-Wire (Switch 3: Off)

Data

↔

↔

MMT330

D1+

D0-

8. When operating in communication mode RS-422, set both switches

3 and 4 to ON position (4-wire wiring is required for RS-422 mode).

9. Connect the power and close the cover.

60 ___________________________________________________________________ M210733EN-H


LAN Interface

The optional LAN interface enables an Ethernet connection to the transmitter. The user can establish a virtual terminal session using a

Telnet client program such as PuTTY or by using Modbus TCP protocol.

When the LAN interface is in use, serial communication using the RS-

232 User Port is disabled.

The LAN interface module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center. Once installed, the module is automatically used by the transmitter. The physical connection to the network is made to the RJ45 connector on the LAN interface module, using a standard twisted pair Ethernet cable

(10/100Base-T). Transmitters with the optional LAN interface are delivered pre-installed with a suitable cable and cable gland.

The LAN interface can use both static and dynamic network settings. If the interface is configured to use dynamic settings, the network where the

LAN interface is connected must have a DHCP server that provides the settings.

The network configuration can be done using the optional display and

keypad, or by using the service port. For instructions, see section LAN

Communication on page 82. The LAN interface also provides a web

configuration interface, which you can access by entering the IP address of the LAN interface in the address field of a web browser. See section

Web Configuration for LAN and WLAN on page 89.

CAUTION The LAN interface is designed to be used in trusted network environments (trusted corporate LAN or VPN-based connection over internet). Avoid connecting the transmitter directly to a public network because the device can be attacked by a malicious user through the network.

1 = Flat cable connector

2 = RJ45 connector with indicator LEDs for link and activity

0709-003

Figure 36 LAN Interface Module

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User's Guide _______________________________________________________________________

WLAN Interface

The optional WLAN interface enables a wireless Ethernet connection

(IEEE 802.11b) to the transmitter. The user can establish a virtual terminal session using a Telnet client program such as PuTTY or by using Modbus TCP protocol. When the WLAN interface is in use, serial communication using the RS-232 User Port is disabled.

The interface supports Wired Equivalent Privacy (WEP) and Wi-Fi

Protected Access (WPA, WPA2). For WEP, 64 and 128 bit encryption is supported, with open system or shared key authentication. WPA is used in the Pre-Shared Key (PSK) mode, with either TKIP or CCMP (also known as AES) encryption.

Similarly to the LAN interface, the WLAN interface can use both static and dynamic network settings. If the interface is configured to use dynamic settings, the network where the WLAN interface is connected must have a DHCP server that provides the settings.

The WLAN interface also provides a web configuration interface, which you can access by entering the IP address of the WLAN interface in the

address field of a web browser. See section Web Configuration for LAN and WLAN on page 89.

1 = Flat cable connector

2 = Connector for antenna cable (connected to transmitter cover)

0802-103

Figure 37 WLAN Interface Module

CAUTION The WLAN interface is designed to be used in trusted network environments (trusted corporate LAN or VPN-based connection over internet). Avoid connecting the transmitter directly to a public network because the device can be attacked by a malicious user through the network.

62 ___________________________________________________________________ M210733EN-H


NOTE The default country setting for the WLAN interface is United States, which limits the operation to WLAN channels 1 ... 11. To enable additional channels (12 ... 14), you can change the country setting using the web configuration interface.

Attaching the WLAN Antenna

The WLAN interface module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center. Before taking the transmitter into use, you must attach the antenna of the WLAN interface into the RP-SMA connector on the transmitter cover. The

location of the antenna is shown in Figure 74 on page 167.

Data Logger Module

The optional data logger module extends the data storage for the measurement data. When the data logger is present, this storage is automatically used by the transmitter. The stored data can be browsed using the optional display module, and accessed through the serial

connections. See sections Graphic History on page 68 and Data

Recording on page 111.

The data logger module contains non-volatile flash memory providing

4 years and 5 months of storage for 4 parameters at a 10-second sampling interval. When the memory is full, the data recording will not stop.

Instead, the oldest data is overwritten. For each parameter and observation period, the module stores the minimum and maximum values during the interval, as well a data trend value that is averaged from

samples taken during the interval (see Table 9 on page 63).

Table 9

20 minutes

3 hours

1 day

10 days

2 months

1 year

4 years

Observation Periods and Resolution

Observation Period Period for Trend/Max/Min

Calculations (Resolution)

10 seconds

90 seconds

12 minutes

2 hours

12 hours

3 days

12 days

The quantities that are logged are the same that have been selected for measurement using the display/keypad or the serial line. When taking the transmitter into use, verify that the desired quantities are selected. If you change the quantities later, the transmitter will start logging the new quantities, and stop logging the quantities that are no longer selected.

Changing the quantities does not delete any measurement data that is

VAISALA ________________________________________________________________________ 63

User's Guide _______________________________________________________________________ already in memory. However, the data of any removed quantity cannot be accessed unless the quantity is re-activated first.

The data logger module has a real time clock with a battery back-up. The clock has been set to the Coordinated Universal Time (UTC) at the factory, and its time cannot be set by the user. The data that is stored in the logger's memory is timestamped using the logger's clock.

When date and time are set on the transmitter, they are stored to the transmitter's memory as an offset from the time on the logger's clock.

When browsing the stored data, the time offset is applied to the timestamps shown in the graphical history, and data outputted from the serial port. The timestamps in the data logger's memory remain as they were originally stored.

You can compensate for the clock drift (less than ±2 min/year) by setting the time on the transmitter. This updates the time offset used on the display and the serial port. You can set the time by using the keypad/display or the serial commands.

1 = Flat cable pins

2 = Battery

Figure 38 Data Logger Module

0706-068

After a reset or a power up, it will usually take at least 10 seconds before the data logger module is initialized. The instrument will not start up before the data logger module is ready.

The indicator LED on the module will blink green during normal operation. If the LED is lit in red color, there is a problem with the module. The transmitter will also indicate the problem by activating the

"Internal error on add-on module" error. If the module is not operating correctly, the transmitter must be sent to Vaisala for maintenance.

The data logger module must be installed at the factory (when ordering the transmitter), or by a Vaisala Service Center. Once installed, the module is automatically used by the transmitter. When the module requires a new battery, the transmitter must be sent to Vaisala for maintenance.

64 ___________________________________________________________________ M210733EN-H


8-Pin Connector

1104-126

Figure 39 Pinout of the Optional 8-Pin Connector

Table 10 Wiring of the Optional 8-Pin Connector

Pin Wire

1

2

3

4

5

6

7

8

White

Brown

Green

Yellow

Grey

Pink

Serial Signal

RS-232 (EIA-232) RS-485 (EIA-485)

Data out TX

(Serial GND)

D1+

(Serial GND)

-

-

Supply -

Supply +

Blue Data in RX

Shield/Red Cable shield

-

-

Supply -

Supply +

D0-

Cable shield

Analog Signal

-

Signal GND (for both channels)

Ch 2+

Ch 1 +

Supply -

Supply +

-

Cable shield

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User's Guide _______________________________________________________________________


66 ___________________________________________________________________ M210733EN-H

Chapter 4 _________________________________________________________________ Operation

CHAPTER 4

OPERATION

This chapter contains information that is needed to operate MMT330.

Getting Started

Within a few seconds after power-up the led on the cover of the transmitter is lit continuously indicating normal operation. If the data logger module is installed, the startup may take up to 18 seconds.

When using the optional display and turning the transmitter on the first time, the language selection menu window opens. Select the language with ▼▲ arrow buttons and press the SELECT button (the left-hand

button).

Display/Keypad (Optional)

Basic Display

Display shows you the measurement values of the selected quantities in the selected units. You can select 1 ... 3 quantities for the numerical basic

display (see section Changing Quantities and Units on page 99.)

0706-046

Figure 40 Basic Display


1 = INFO shorcut button; see section Device Information on page 104.

2 = GRAPH shortcut button; see section Graphic History on page 68.

3 = Quantities selected for display

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NOTE From any view, even in the absence of an EXIT button, a four-second press on the right-hand function button takes you directly to the basic display.

Graphic History

The graphical display shows the data trend or min/max graph of the selected quantities, one at a time. The graph is updated automatically while measuring.

0706-047

Figure 41 Graphical Display

Trend graph: Shows you a curve of average values. Each value is a

calculated average over a period. See Table 11 on page 68.

Max/min graph: Shows you the minimum and maximum values in a form of curve. Each point shows the absolute minimum and maximum

observed during the time period represented by the data point. See Table

11 on page 68.

Table 11 Periods for Trend and Max/Min Calculations

Observation Period Period for Trend/Max/Min Calculations

(Resolution)

20 minutes

3 hours

1 day

10 days

2 months

1 year

4 year*

10 seconds

90 seconds

12 minutes

2 hours

12 hours

3 days

12 days

* Shows the maximum logging period of the data logger module (available when data logger module is installed)

Use the following functions in the graphical display:

- Press the NEXT button to change between the trend graph and max/min graph for the quantities selected for display.

- Press the EXIT button to return to the basic display.

-

Press the ▼▲ arrow buttons to zoom in and out in the graph window.

68 ___________________________________________________________________ M210733EN-H


-

Press the ◄► arrow buttons move the cursor (vertical bar) along the time axis. The cursor mode allows you to observe individual measuring points. The numerical value at the cursor position is shown at the left upper corner. The right upper corner shows the time from the present to the chosen moment (without the logger module), or the date and time at the cursor position (when the logger module is installed).

- If the optional data logger module is installed, you can scroll the cursor off the screen to move to a new point on the time axis. The new date will be displayed, and the cursor will be centered at the date where the cursor scrolled off the screen.

0706-030

Figure 42 Graphical Display with Data Logger

If the data logger module is installed, you can move quickly on the time axis: zoom out, move the cursor, and zoom back in.

The time that is shown below the graph is adjusted with the current time offset of the transmitter. If you change the transmitter's date and time setting, the displayed timestamps in the history graph change accordingly. For an explanation of the effect of changing the date and

time manually, see section Data Logger Module on page 63.

Table 12

Message

Power outage

Graph Information Messages in Cursor Mode

No data

System error

T meas. error

RH meas. error

Adj. mode active

Interpretation

Power failure (marked also with dashed vertical line)

Quantity has not been selected for the display

General device or power supply problem

Temperature measurement/sensor failure

Humidity measurement/sensor failure

Adjustment mode active (data recorded in the adjustment mode is not displayed)

A question mark after time tells you that at least one power failure

(dashed vertical line) has occurred after the chosen moment. In this case, the exact time difference between the present and the cursor position is not exactly known. If the data logger module is installed, the time is known and the question marks are not present.

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Menus and Navigation

You can change settings and select functions in the menus.

1. Open the Main Menu by pressing any of the ▼▲◄► arrow buttons in the basic (numeric) display mode.

2.

Move in the menus by using the ▲▼ arrow buttons.

3.

Open a submenu with ► button.

4.

Press ◄ to return to the previous level.

5. Function button EXIT returns you back to the basic display.

Figure 43 Main Menus

0706-208, 0706-048

Some menu items, such as Date and time in the System menu, are only shown if supported by the transmitter and the installed options.

70 ___________________________________________________________________ M210733EN-H


Changing the Language

1. Go back to the basic display by keeping the right-hand button pressed for four seconds.

2. Open the Main menu by pressing any of the ▼▲◄► buttons.

3. Scroll to the System menu option, and press the ► button. The menu option is indicated with the wrench symbol.

4. Scroll to the Language menu option, and press the left-hand button. The menu option is indicated with the flag symbol.

5.

Select the language with the ▼▲ buttons, and confirm the selection by pressing the left-hand button.

6. Press the right-hand button to exit to the basic display.

Rounding Setting

Round off one decimal by using the Rounding function . The default setting is rounding on. Rounding has no effect on quantities without decimals.

1. Open the Main Menu by pressing any of the ▲▼◄► arrow buttons.

2. Select Display and confirm by pressing the ► arrow button.

3. Select Rounding and press ON/OFF button.

4. Press EXIT to return to the basic display.

Display Backlight Setting

As a default the display backlight is always on. In the automatic mode the backlight stays on for 30 seconds from the last press of any button.

When pressing any button, the light turns on again.


2. Select Display

, press the ►arrow button.

3. Select Backlight, press the CHANGE button.

4. Select On/Off/Automatic, press the SELECT button.


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Display Contrast Setting

Display contrast is automatically adjusted based on the ambient temperature. However, depending on the installation location and viewing direction, it may be necessary to fine-tune the contrast manually.

Using Display/Keypad


2. Select Display


3. Select Contrast, press the ADJUST button.

4.

Adjust the contrast by pressing the ◄► arrow buttons.

5. Press OK and EXIT to return to the basic display.

Using Serial Line

Use the serial line command CON to view or set the display contrast.

CON [xxx]<cr> where xxx = Contrast value for display. Recommended range -9 ... 9, default 0. Negative values make screen lighter, positive values make it darker.

Example (view current contrast setting):

>con

Contrast : 0

>

Example (set contrast to 5):

>con 5

Contrast : 5

>

Keypad Lock (Keyguard)

This function locks the keypad and prevents unintentional key presses.

1. Keep pressing the left-hand function button for 4 seconds to lock the keypad (at any display).

2. To unlock the keypad, press the OPEN button for 4 seconds.

72 ___________________________________________________________________ M210733EN-H


Menu PIN Lock

You can prevent unauthorized changes of the device settings by activating the menu PIN lock. When this function is activated, the basic display, graphical view, and device information displays are available, but access to the menus is locked. The key symbol indicates the activation of this feature.


2. Select System


3. Select Menu PIN, press the ON button.

4.

Enter a PIN code by using the ◄►arrow buttons. Press OK to confirm the setting. Now the PIN lock is on and a key symbol is shown in a display.

5. Press EXIT to return to the basic display. Returning to the menu is possible only by entering the correct PIN code.

When you want to turn off the PIN lock, go to the menu by giving the

PIN code and select System, Menu PIN, press OFF button.

In case you have forgotten the PIN code, open the transmitter cover and press the ADJ button once. Wait for a few seconds and the adjustment menu opens. Select Clear menu PIN, press CLEAR.

NOTE You can also disable the keypad completely with serial command

LOCK. See section Locking Menu/Keypad Using Serial Line on page

107.

Factory Settings

Use the display/keypad to restore the factory settings. This operation does not affect the adjustments. Only settings available in the menus are restored.

1. Press any of the arrow buttons to open the Main Menu.

2. Select System by pressing the ► arrow button.

3. Select Factory settings and press the REVERT button to confirm your selection. Press the YES button to reset all settings to the factory defaults.

See section General Settings on page 99 for a description of the other

menu options.

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Display Alarms

The Display Alarm feature provides two independently configurable alarms for transmitters with the display/keypad option. Each alarm tracks a selected quantity, with freely configurable limit values. Each alarm also has a configurable hysteresis value to prevent unnecessary triggering when the measurement fluctuates around an alarm limit. The alarms can be configured for any quantity supported by the transmitter. The configuration of the Display Alarms can only be done using the display/keypad option.

You can have the alarm activate inside or outside the specified range by setting the limits correctly:

- To have the alarm activate when the measured quantity is outside the specified range, set the Act. above limit higher than the Act. below limit.

- To have the alarm activate when the measured quantity is inside the range, set the Act. above limit lower than the Act. below limit.

The alarm limits are shown on the graph display as thicker dotted lines.

When a display alarm is activated, the automatic scaling of the graph display always keeps the limits in view.

When an alarm is activated, an alarm note is displayed on the display, and the lights of the display will blink. If the data logger module is installed, the alarm note includes the time and date of the alarm.

0802-041

Figure 44 Display Alarm Active

Multiple alarms can be active at the same time; the alarm that was triggered first will be shown on the display. The next active alarm is revealed when the currently shown alarm is acknowledged by pressing the OK button.

Activated alarms are only shown on the screen; there are no alarm messages output to the serial line. After an alarm has been acknowledged, you must refer to the data graphs to see when the measured quantities have exceeded the limits. You may use the optional

74 ___________________________________________________________________ M210733EN-H

Chapter 4 _________________________________________________________________ Operation relay outputs as alarm outputs by configuring them separately; see

section Setting Relay Outputs on page 125.

Configuring a Display Alarm

1. Enter the Main Menu by pressing an arrow key on the keypad.

2. Use the arrow keys to select Display, followed by Alarms, to open the Display Alarms menu. The Display Alarms menu shows the currently enabled and disabled alarms.

NOTE

0802-069

Figure 45 Display Alarms

3. Use the arrow keys to select an alarm to configure. The alarm editing page opens.

Changes you do on the alarm editing page will take effect immediately, and may cause an alarm to appear on the screen.

4. To select a quantity for the alarm, press the Change button and select the quantity from the list.

5. To modify or remove the alarm limit values, move the selection over the Act. above or Act. below field and press the Set button.

You will be prompted to Modify or Remove the value.

0802-070

Figure 46 Modifying an Alarm Limit

When modifying the value, use the arrow up and down buttons to change the value under the cursor. Left and right arrow buttons move the cursor. Select the OK button to accept the modified value, or Cancel to undo the modification.

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6. Set a suitable Hysteresis value to prevent the alarm from being triggered unnecessarily by small measurement changes that pass the alarm limit repeatedly.

7. Set or clear the Alarm enable checkbox to enable or disable the alarm.

8. Press the Exit button to leave the alarm configuration screen and return to the basic view.

Using Serial Line

Use the serial line command ALSEL to view or set the display alarms.

ALSEL [quantity1 quantity2]<cr> where quantity1 = Quantity for display alarm 1. You can set any quantity

available on your transmitter; see Table 3 on page 19 and

Table 4 on page 19. In addition to quantities, you can also

select the following:

FAULT – Alarm for device errors

ONLINE – Alarm for sensor operations that freeze the measurement output (for example, chemical purge). quantity2 = Quantity for display alarm 2. Options are the same as for quantity1.

Example (view current display alarm settings):

>alsel ?

Al1 aw above: 0.50 ?

Al1 aw below: - ?

Al1 aw hyst : 0.10 ?

Al1 aw enabl: ON ?

Al2 T above: 0.00 'C ?

Al2 T below: 0.00 'C ?

Al2 T hyst : 0.00 'C ?

Al2 T enabl: OFF ?

Warning! One or more alarms disabled.

>

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Table 13 ALSEL Parameters

Name Description above If specified, the alarm goes off when the quantity value rises above the exact value of this setpoint. However, if above < below, the alarm goes off at (above + hyst) and (below – hyst) instead.

Cannot be set for fault and online alarms. below If specified, the alarm goes off when the quantity value decreases hyst enabl below the exact value of this setpoint. However, if above < below, the alarm goes off at (above + hyst) and (below – hyst) instead.

Cannot be set for fault and online alarms.

Distance from setpoint amount of extra retractment needed in order to regenerate alarm on the next crossing of the setpoint.

Cannot be set for fault and online alarms.

Enable (ON) or disable (OFF) the display alarm.

Example (set a w

and T as display alarm quantities and configure the alarms as prompted):

>alsel aw t

Al1 aw above: 0.50 ? 0.6

Al1 aw below: - ?

Al1 aw hyst : 0.10 ?

Al1 aw enabl: ON ?

Al2 T above: - 'C ?

Al2 T below: - 'C ? 0

Al2 T hyst : 0.00 'C ? 1

Al2 T enabl: OFF ? ON

>

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MI70 Link Program for Data Handling

MI70 Link is a support program that enables you to handle the measurement data of your Vaisala transmitter using a Windows PC.

Using the MI70 Link you can, for example:

- Monitor the transmitter’s measurement readings directly using the real-time window function.

- Transfer recorded data from the main transmitter memory in numeric or graphical format, for further use in a spreadsheet program (such as

Microsoft Excel) or virtually any other application. Note that the maximum amount of data points that can be downloaded in one transfer is 65000.

To use the MI70 Link program, you must connect your Windows PC to the service port of the transmitter with a serial or USB cable. The MI70

Link program, and the optional connection cables, are available from

Vaisala. See section Spare Parts and Accessories on page 164.

Follow the steps below to connect your transmitter to the MI70 Link program using the serial interface:

1. Connect your PC to the service port of the transmitter. Refer to

section Service Port Connection on page 81.

2. Check that the MMT330 is powered.

3. Start the MI70 Link program.

4. Start using the program. There is usually no need to select a COM port manually, the MI70 Link software can detect it automatically.

NOTE For instructions on using MI70 Link, see the program’s online help.

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Serial Line Communication

Connect the serial interface by using either the user port or the service port.

For permanent interfacing to host system, use the user port.You can change the serial settings and operate in RUN, STOP, SEND, POLL, and

MODBUS modes.

For temporary connections use the service port. Service port is always available with fixed serial settings.

0605-039

Figure 47 Service Port Connector and User Port Terminal on Motherboard


1 = Service port connector

2 = User port terminals

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User Port Connection

Use suitable serial cable between the user port RxD, GND and TxD

screw terminals and the PC serial port, see Figure 48 below.

Table 14 Default Serial Communication Settings for the User

Port

Parameter

Bauds

Parity

Data bits

Stop bits

Flow control

Value

4800

Even

7

1

None

RxD

GND

TxD

Ch1+

Ch1–

Ch2+

Ch2–

+

–

1 2 3 4 5

6 7 8 9

IOIOI

0506-033

Figure 48 Connection Example between PC Serial Port and User

Port

Connections to pins 4,6,7 and 8 on PC serial port are required only if you are using software requiring hardware handshaking.

User Port Operating Modes

When the transmitter is powered up, it will behave according to its configured operating mode:

- In STOP mode, the transmitter outputs the software version and the command prompt (if echo is on).

- In RUN mode a measurement output starts immediately.

- In SEND mode one measurement message is printed and command prompt is displayed (if echo is on).

- In POLL or MODBUS mode, the transmitter does not output anything after power-up.

For a description of the modes, see section SMODE on page 109.

NOTE RS-232 User Port cannot be used when a communication module

(LAN, WLAN, or RS-422/485 interface) has been installed.

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Service Port Connection

Connection Cables

To connect to the service port, you need a suitable cable with an RJ45 connector. Depending on the connections of your PC, you can either use the Serial Connection Cable (optional accessory 19446ZZ) or the

USB-RJ45 Serial Connection Cable (optional accessory 219685). The

USB cable enables you to connect the transmitter to a PC via a standard type A USB port. Note that the USB cable does not enable high speed data transfer, since the bit rate is limited by the serial interface of the service port.

Installing the Driver for the USB Cable

Before taking the USB cable into use, you must install the provided USB driver on your PC. When installing the driver, you must acknowledge any security prompts that may appear.

1. Check that the USB cable is not connected. Disconnect the cable if you have already connected it.

2. Insert the media that came with the cable, or download the latest driver from http://www.vaisala.com/software .

3. Execute the USB driver installation program (setup.exe), and accept the installation defaults.

4. After the driver has been installed, connect the USB service cable to a USB port on your PC. Windows will detect the new device, and use the driver automatically.

5. The installation has reserved a COM port for the cable. Verify the port number, and the status of the cable, using the Vaisala USB

Instrument Finder program that has been installed in the

Windows Start menu.

Windows will recognize each individual cable as a different device, and reserve a new COM port. Remember to use the correct port in the settings of your terminal program.

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Using the Service Port

1. Open the screws on the transmitter cover, and open the cover.

2. Connect the desired cable (serial interface cable or USB cable) to your PC and the service port connector on the transmitter. For the

location of the service port, refer to Figure 47 on page 79.

3. Open a terminal program and set the communication settings as follows:

Table 15 Communication Settings for the Service Port

Parameter

Bauds

Parity

Data bits

Stop bits

Flow control

Value

19200

None

8

1

None

For a detailed explanation of using a terminal program, see section

Terminal Program Settings on page 90.

4. Power-up the MMT330.

LAN Communication

To enable LAN communication, a LAN or WLAN interface must be physically connected to the network, and the networking settings must be suitable for your network. For a description of interfaces, see sections

LAN Interface on page 61 and WLAN Interface on page 62.

The LAN and WLAN interfaces both operate by accessing the serial interface (User Port) of the transmitter. All commands and protocols that are available using the serial interface are available through the LAN and

WLAN interfaces; refer to section List of Serial Commands on page 90.

For instructions on how to connect using a terminal program, see section

Terminal Program Settings on page 90.

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IP Configuration

The IP settings of the LAN and WLAN interfaces are described in Table

16. The current settings can be viewed on the serial line or using the

device information display; see section Device Information on page 104.

Table 16

IP Address

Netmask

Gateway

MAC

IP Settings for the LAN and WLAN Interfaces

Parameter

Automatic configuration

(DHCP)

Web configuration

Description

If enabled, the transmitter will retrieve its network settings (including the IP Address) from a server in the network. If disabled, static network settings are used instead.

If enabled, the settings of the interface can be changed using a web browser. The configuration page can be accessed by browsing to the IP address of the transmitter.

The four part network ID of the transmitter. Must be set manually if automatic configuration is not used.

Example value: 192.168.0.222

Used together with the IP address to determine which network the transmitter is a part of. Must be set manually if automatic configuration is not used.

A common netmask is 255.255.255.0

IP address of the server that enables the transmitter to access other networks. Must be set manually if automatic configuration is not used.

Example value: 192.168.0.1

The MAC address is the unique hardware address of the LAN or WLAN interface. Cannot be changed.

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Using Display/Keypad

You can configure the IP settings of the LAN and WLAN interfaces using the display/keypad as follows:


2. Press the

► arrow button to select Interfaces.

3. Press

► arrow button to select Network settings. There will be a delay as the transmitter refreshes the network information.

4. You are now in the Network Interface menu. Selecting the IP

configuration option opens the IP configuration menu.

1102-015

Figure 49 Network Interface Menu

The Network Interface menu also allows you to configure the

Communication Protocol, enable or disable the Web

configuration option, or Disconnect all users that are currently accessing the LAN or WLAN interface.

5. In the IP configuration menu, select Automatic configuration

(DHCP), or enter the IP address, Netmask and Gateway manually. If automatic configuration is enabled, manual configuration cannot be done.

0709-004

Figure 50 IP Configuration Menu

To enter a value manually, use the

▲▼ arrow buttons to select the parameter to change, and press Change. A cursor will appear in the first digit. Move the cursor using the ◄► arrow buttons, and change the value under the cursor using the

▲▼ arrow buttons.

Confirm the selection by pressing OK.

6. After configuring the desired parameters, press EXIT to apply the changes and return to the basic display.

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Use the serial line command NET to view or set the network settings for the LAN and WLAN interfaces. You can also refresh the network information or disconnect all active connections.

NET [REFRESH] [DISCONNECT] [DHCP WEB] [DHCP IP SUBNET

GATEWAY WEB]<cr> where

REFRESH = Updates the network information and displays it

DISCONNECT = Disconnects all current sessions

DHCP = ON or OFF. Enables or disables the automatic IP configuration.

WEB

IP

= ON or OFF. Enables or disables the Web

Configuration page.

= The four part network ID of the transmitter. Must

SUBNET be set manually if automatic configuration is not used.

= Used together with the IP address to determine which network the transmitter is a part of. Must be set manually if automatic configuration is not used.

GATEWAY = IP address of the server that enables the transmitter to access other networks. Must be set manually if automatic configuration is not used.

Examples:

>net refresh

OK

DHCP : OFF

IP address : 192.168.0.101

Subnet mask : 255.255.255.0

Default gateway: 192.168.0.1

Web config. : OFF

MAC address : 00:40:9d:2c:d2:05

Status : Not connected

>

>net on off

DHCP : ON

IP address : 192.168.0.104

Subnet mask : 255.255.255.0


Web config. : OFF


Status : Connected

OK

>

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>net off 192.168.0.101 255.255.255.0 192.168.0.1 off

DHCP : OFF

IP address : 192.168.0.101

Subnet mask : 255.255.255.0


Web config. : OFF


Status : Connected

OK

>

Wireless LAN Configuration

The settings of the WLAN interface are described in Table 17. The

current settings can be viewed on the serial line or using the device

information display; see section Device Information on page 104.

- CCMP encryption is called AES in some networking products.

- The WLAN interface supports both WPA and WPA2 (also known as

802.11i) security when either WPA-PSK mode is selected.

- If your WLAN network is using some other security method than listed below, you must set up a temporary WLAN network with any of these settings and then use the web configuration to set WLAN

security settings for the actual network. See section Web

Configuration for LAN and WLAN on page 89.

Table 17 Wireless LAN Settings

Parameter

SSID

Security type

Security key

Description

The service set identifier (that is, network name) of the wireless network to connect to. 1 … 32 characters.

The security type of the wireless network. The options are:

OPEN

OPEN/WEP

WPA-PSK/TKIP

WPA-PSK/CCMP

All other choices except OPEN require a security key; see below.

The encryption key or passphrase that is used with an encrypted network.

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You can configure the Wireless LAN settings using the display/keypad as follows:


2. Press the

► arrow button to select Interfaces.

3. Press the

► arrow button to select Network settings. There will be a delay as the transmitter refreshes the network information.

4. Press the

► arrow button to select Wireless LAN settings.

0802-111

Figure 51 Wireless LAN Settings

5. The Name entry on the page shows the SSID of the currently selected wireless network. To change the SSID, press the SET button. Use the

▲▼ arrow buttons to change the character under the cursor, and ◄► arrow buttons to more the cursor. Press the

OK button when done.

0802-110

Figure 52 Entering Network SSID

6. To change the currently selected Network type, select the Type entry and press the Change button. Select the new type from the list and press the Select button.

0802-112

Figure 53 Selecting the Wireless Network Type

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7. If you have selected an encrypted network type (WEP or WPA), you must enter the security key to be used. Select the

Key/passphrase entry and press the Set button. Enter the key in the same way as the SSID, and press the OK button. With the WEP encryption you must enter the encryption key in hexadecimal

(10 hexdecimals for 64-bit encryption or 26 hexadecimals for

128-bit encryption). A WPA key must be 8 … 63 ASCII characters.

8. After setting the wireless network parameters, press the Exit button in the Wireless LAN Settings menu. You will be asked to confirm the new settings. Note that when new settings are saved, all currently active WLAN connections are disconnected.


Use the serial line command WLAN to view or set the wireless network settings. If you set an encrypted network type, you will be asked to enter the security key. With the WEP encryption you must enter the encryption key in hexadecimal (10 hexdecimals for 64-bit encryption or 26 hexadecimals for 128-bit encryption) or with plain ASCII characters (5 characters for 64-bit encryption or 13 characters for 128-bit encryption).

A WPA key must be 8 … 63 ASCII characters.

WLAN [SSID TYPE]<cr> where

SSID

TYPE

= Network name in 1 … 32 characters

= Security type of the wireless network. The options are:

OPEN

OPEN/WEP

WPA-PSK/TKIP

WPA-PSK/CCMP

Examples:

>wlan ?

Network SSID : WLAN-AP

Type : OPEN

>

>wlan accesspoint wpa-psk/tkip

Network SSID : accesspoint

Type : WPA-PSK/TKIP

WPA-PSK phrase ? thequickbrownfox

Save changes (Y/N) ? y

OK

>

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Communication Protocol

When a connection is established via the LAN or WLAN interface, the session has the same communication mode, run interval, poll address and echo settings as the serial port (User Port) session would have.

These settings can be changed using the display/keypad, using the serial line (User Port or Service Port), or on-the-fly during a Telnet session.

The display menu path to the Communication Protocol settings is:

Main Menu

► Interfaces ► Network Interface ► Communication

Protocol.

The commands for changing the settings are SMODE, INTV, ADDR, and ECHO.

Web Configuration for LAN and WLAN

The LAN and WLAN interfaces both have a web configuration page that is accessible using a browser. If you have not disabled the page from the network settings, you can access it with a web browser at the IP address of the interface. You can check the currently assigned IP address of the

interface from the device information screens (see Device Information on page 104), or from the serial line by issuing the net ? command.

When accessing the web configuration page, you must first log in.

Username: user

Password: vaisala

The web configuration page provides similar network configuration options as the serial line and the display/keypad. It also has additional options for advanced users. For example, there are more options for securing the wireless network.

If these additional options are used, they will appear as custom configurations when viewed from the serial line or the display/keypad.

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NOTE

1102-017

Figure 54 Web Configuration Interface for LAN

Terminal Program Settings

The instructions below describe how to connect to the MMT330 using the PuTTY terminal application for Windows. Perform the necessary cabling and configuration of the transmitter before following the instructions.

PuTTY is available for download at www.vaisala.com/software .

PuTTY cannot be used to access the transmitter through the User Port if the transmitter is configured to use the Modbus protocol. However, you can always use PuTTY to access the transmitter through the Service Port.

Opening a Serial/USB connection

1. Power up the MMT330 and start the PuTTY application.

2. Select the Serial & USB settings category, and check that the correct COM port is selected in the Serial or USB line to connect

to field. Change the port if necessary.

If you are using a Vaisala USB cable, you can check the port that it uses by clicking the USB Finder... button. This opens the Vaisala

USB Instrument Finder program that has been installed along with the USB drivers.

3. Check that the other serial/USB line settings are correct for your connection, and change if necessary. The default settings (shown in

Figure 55 on page 91) are used by the Service Port of the

MMT330.

90 ___________________________________________________________________ M210733EN-H


0810-070

Figure 55 Opening a Serial Connection

4. Click the Open button to open the connection window and start using the serial line.

If PuTTY is unable to open the serial port you selected, it will show you an error message instead. If this happens, restart PuTTY and check the settings.

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Opening a Telnet session (LAN/WLAN)

NOTE The instructions below assume that the LAN/WLAN interface on the transmitter is correctly configured and the network connection is already done.

1. Power up the instrument and start the PuTTY application. If your transmitter acquires a network address using DHCP, wait for a minute for this to complete, then verify the address from the transmitter.

2. In the Session window, select the Telnet connection type.

3. Enter the IP address of your transmitter in the Host Name (or IP

address) field. Use the default Telnet port 23.

0810-071

Figure 56 Opening a Telnet Connection

4. Click the Open button to open the connection window and start using the Telnet session.

If PuTTY is unable to connect the IP address you entered, it will show you an error message instead. If this happens, check the

IP address and the connections, restart PuTTY, and try again.

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List of Serial Commands

All commands can be issued either in uppercase or lowercase. In the command examples, the keyboard input by the user is in bold type.

The notation <cr> refers to pressing the carriage return (Enter) key on your computer keyboard. Enter a <cr> to clear the command buffer before starting to enter commands.

In the tables below, the bold text in the brackets is the default setting.

Table 18 Measurement Commands

Command

R

S

INTV [0 ... 255 S/MIN/H]

SEND [0 ... 255]

DSEND

Description

Start the continuous outputting

Stop the continuous outputting

Set the continuous output interval

(for RUN mode)

Output the reading once

Output the reading once from all connected transmitters (in STOP or POLL mode)

Set the serial interface mode SMODE

[STOP/SEND/RUN/POLL/

MODBUS]

SDELAY

SERI [baud p d s]

ADDR [0 ... 255]

NET

WLAN

OPEN [0 ... 255]

CLOSE

View or set user port (RS232 or RS485) answer minimum delay

User Port settings (Default: 4800 E 7 1) baud:

300 ... 115200

Set the transmitter address (for POLL and

MODBUS modes)

View or set networking parameters for LAN and

WLAN interfaces

View or set wireless network parameters for

WLAN interface

Open a temporary connection to a POLL mode device

Close the temporary connection (Back to POLL mode)

Table 19

Command

FORM

TIME

DATE

FTIME [ON/OFF]

FDATE [ON/OFF]

SCOM

UNIT

Formatting Commands

Description

Set the output format of SEND and R commands

Set the time

Set the date

Add time to SEND and R outputs

Add date to SEND and R outputs

Assign a new command name that works like the SEND command

Select the metric or non-metric output units

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Table 20 Data Recording Commands

Command Description

DIR Display recorded files

PLAY [0 ... 21] [START END] Output recorded data file. Start and end times can only be specified if the data logger module is installed. The times must be given in the following format: yyyy-mm-dd hh:mm:ss

DSEL

DELETE

UNDELETE

Select data recording and display quantities.

Delete all data files, including the memory of the optional data logger module

Recover the deleted files that have not been overwritten

Table 21 Calibration and Adjustment Commands

Command

CRH

CT

FCRH

CTEXT

CDATE

ACAL

Description

Relative humidity calibration

Temperature calibration

Relative humidity calibration after sensor change

Give the text to calibration information field

Set the calibration date

Analog output calibration

Table 22 Setting and Testing the Analog Outputs

Command

AMODE

ASEL

ITEST

AERR

AOVER [ON/OFF]

Description

View the analog output modes

Select the parameters for the analog outputs

Test the analog outputs

Change the analog error output values

Extend analog output range by 10%

Table 23 Setting and Testing the Relays

Command

RSEL

RTEST

Description

Set and view the relays

Test the relays

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Table 24

Command

?

??

ALSEL

CON

ECHO [ON/OFF]

ERRS

FILT

FIND

HELP

LIGHT

LOCK

MODBUS

MODS

OIL

VERS

Other Commands

Description

Output information about the device

Output information about the device in POLL mode

Set display alarms

Set display contrast

Turn the serial interface echo ON/OFF

List present transmitter errors

Set the result filtering

All devices in POLL mode send their addresses

List the currently available commands

Set the display backlight mode

Lock the menu or disable the keypad

View Modbus diagnostic counters

View information about connected modules

Set oil-specific parameters for ppm conversion

Display the software version information

Getting Measurement Message from

Serial Line

Starting Continuous Outputting

Enter the R command to start the continuous output of measurements.

R<cr>

Example:

>r aw= 0.261 T= 23.8 'C H2O= 15 ppm

>

If a value is too long to fit to the allocated space in the output, or if there is an error in outputting the quantity, the value is displayed with stars ‘*’.

You can change the format of the output with the following commands:

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- Outputting interval can be changed with the INTV command.

- Output message format can be changed with the FORM command.

Stopping Continuous Outputting

Use the S command to end the RUN mode. After this command all other commands can be used. You can also press the Esc button or reset the transmitter to stop the outputting.

S<cr>

See command SMODE to change the default (power-up) operation mode.

Outputting Reading Once

Use the SEND command to output the reading once in STOP mode.

SEND<cr>

The output format depends on which parameters the transmitter can output.

Examples:

>send

RS= 45.1% T= 23.8 'C H2O= 15 ppm

>

Assign an Alias for the SEND Command

Use the SCOM command to assign a new command that works like the

SEND command. The standard SEND command of the transmitter will always function normally whatever the SCOM definition may be.

Command names are case-insensitive.

SCOM<cr>

Example (assigning the command MEASURE as an alias for the SEND command):

>scom

Send command : ? measure

>measure aw= 0.261 T= 23.8 'C H2O= 15 ppm

>

You can remove the SCOM definition by pressing Esc when entering the command name:

>scom

Send command : measure ? <esc>

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Outputting Reading Once From All Transmitters

Use the DSEND command to output the reading once from all connected transmitters that are in STOP or POLL modes. In order to avoid data collisions, the transmitters will send their response after a suitable delay.

The response includes the transmitters’s address, followed by their measurement message.

NOTE The total execution time of the DSEND command depends on the bit rate of the serial port connection. At slow speeds, it will take a considerable amount of time for devices with large address number to respond. The delay will be the same even if there are no other devices at all.

DSEND<cr>

Example (transmitters with addresses 3 and 25 responding):

>dsend

3 RS= 41.2% T= 23.8 'C H2O= 15 ppm

25 aw= 0.277 T= 23.5 'C H2O= 16 ppm

>

Communicating with a Transmitter in POLL

Mode

OPEN

When all transmitters on the RS-485 bus are in POLL mode the OPEN command sets one transmitter temporarily to STOP mode so that other commands can be entered.

OPEN [aa]<cr> where aa = Address of the transmitter (0 ... 99)

CLOSE

The CLOSE command switches the transmitter back to the POLL mode.

Example:

>open 2 (opens the line to transmitter 2, other transmitters stay in POLL mode)

>? (for example, display device information)

...

>close (line closed)

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Formatting Serial Line Message

NOTE Instead of using the FTIME and FDATE commands described in this section, you can use the FORM command with modifiers TIME and

DATE. See section FORM on page 100.

FTIME and FDATE

FTIME and FDATE commands will enable/disable output of time and date to the serial line. To add time to R and SEND outputs enter:

FTIME [x]<cr>

To add date to R and SEND outputs enter:

FDATE [x]<cr> where x = ON or OFF

Example:

>send aw= 0.277 T= 23.5 'C H2O= 16 ppm

>ftime on

Form. time : ON

>send

00:16:07 aw= 0.277 T= 23.5 'C H2O= 16 ppm

>fdate on

Form. date : ON

>send

2000-01-01 00:16:15 aw= 0.277 T= 23.5 'C H2O= 16 ppm

>

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General Settings

Changing Quantities and Units

To change quantities and units use serial commands or the optional display/keypad. The MMT330 measures the following quantities:

- Water activity (a w

)

- Relative saturation (%RS)

- Temperature (T) (metric unit: ºC, non-metric unit:ºF)

- ppm for transformer oil only (H

2

O)

NOTE Only the quantities selected when ordering the device can be selected as display output quantities.

NOTE


Use display/keypad to select the display output quantities.


2. Press the

► arrow button to select Display.

3. Press

► arrow button to select Quantities.

4. Select the quantity by using the

▲▼ arrow buttons. Confirm the selection by pressing SELECT. You can select 1 ... 3 display quantities at a time.


To select display units:


2. Press the

► arrow button to select Display.

3. Use the

▲▼arrow buttons to select Units. Confirm the selection by pressing the right-hand arrow button.

4. Use the

▲▼ arrow buttons to select display units. Confirm the selection by pressing CHANGE. The unit changes from metric to non-metric or the other way round.


Changing the display quantities/units (by using the display/keypad) has no effect on the serial output data.

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FORM

Use the serial line command FORM to change the format or select a certain quantities for the output commands SEND and R.

FORM [x]<cr> where x = Formatter string

If no formatter string is entered, the command will display the currently active formatter string. Note that the hash symbol "#" is shown as a backslash "\" when viewing the current formatter string.

Formatter string consists of quantities and modifiers. The MMT330 measures the following quantities:


)




2

O) (optional quantity)

When selecting the quantity, use the abbreviations of the quantities.

The modifiers are presented in Table 25 on page 100 below.

Table 25 FORM Command Modifiers

Modifier x.y

#t

#r

#n

“”

#xxx

U5

ADDR

SN

TIME

DATE

Description

Length modifier (number of digits and decimal places)

Tabulator

Carriage-return

Line feed

String constant

Special character, code "xxx" (decimal), for example #027 for ESC

Unit field and length (length optional)

Transmitter address [00...255]

Transmitter serial number

Time [hh:mm:ss]

Date [yyyy-mm-dd]

Example:

>form "aw=" 6.4 aw #t "t=" 6.2 t #r#n

OK

>send aw= 0.2644 t= 25.50

>

100 __________________________________________________________________ M210733EN-H


>form "Oil ppm= " h2o " " u3 #r#n

OK

>send

Oil ppm= 16.6 ppm

>

>>form "RS%=" " " U4 3.5 "T" T " " U3 6.0 "H2O=" H20 " " U5

\r \n

>OK

>send

RS%= 45.1% T= 23.91169 'C H20= 27 ppm

>

Command 'FORM /' will return the default output format. The default output format depends on the device configuration.

>form /

OK

>send aw= 0.087 T= 24.0 'C

>

UNIT

Use the UNIT command to select metric or non-metric output units:

UNIT [x]<cr> where x = M or N where

M = Metric units

N = Non-metric units

NOTE This command changes both the serial output and display units to either metric or non-metric units. When you want to output both metric and non-metric units simultaneously on the serial line and display, select the display units later by using the display/keypad.

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Date and Time


If the optional Data Logger Module is installed, you can change the time and date using the display/keypad.


2. Select System and press the ►arrow button to confirm your selection.

3. Select Date and time and press the ►arrow button.

4. Press the SET button to enter the adjustment mode, and use the arrow buttons to select and change the values.

5. You can also change the date and time formats that are shown in the graphs. The selected formats are only used in graphical display, they do not change the formats that are used in the serial communication.



To set time enter the TIME command. To set date enter the DATE command.

TIME<cr>

DATE<cr>

These time and date settings are shown on the timestamps of PLAY command. When you want to include time and date in the R and SEND commands, use the FTIME and FDATE commands.

Example:

>time

Time : 13:42:49 ?

>date

Date : 2007-05-31 ?

NOTE If the optional Data Logger Module is not installed, time and date available on the serial ports (only) are cleared to 2000-01-01 00:00:00 at reset or at power failure.

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Data Filtering

The averaging data filter calculates an average over a certain period of time. The lowest measurement noise is achieved with the extended filtering. There are three filtering levels available.

Table 26

Setting

OFF

STANDARD

EXTENDED

Filtering Levels

Filtering Level

No filtering (default setting).

Standard filtering. Approximately 13 s moving average.

Extended filtering. Approximately 1 min average by default, but configurable on the serial line.



2. Select Measuring by pressing the ► arrow button.

3. Select Filtering and press CHANGE to confirm your selection.

4. Select Off/Standard/Extended and press SELECT to confirm your selection.



Use the serial line command FILT to set the filtering level.

FILT [level] [extfactor]<cr> where level = Filtering level. The options are:

OFF (no filtering, default setting)

ON (standard filtering, approximately 13 s moving average)

EXT (extended filtering, approximately 1 min average by default but configurable by changing the extfactor) extfactor = Weighted average factor for extended filtering level.

Range 0 ... 1, default 0.030.

In extended filtering mode, the output is calculated based on the following formula:

[(new result * extfactor) + (old result * (1.0 - extfactor))]

This means that with extfactor value 1 the transmitter will take only the latest measurement into account, but with extfactor value 0.1 a new output is a combination of the previous output (90%) and the latest measurement

(10%).

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Example (enable standard filtering):

>filt on

Filter : ON

>

Device Information

Use the display/keypad or the serial line to display the device information.

Press the INFO button in the basic display to see the following information:

- Present or past unacknowledged errors, if any

- Device information

- Current date and time (only shown if data logger module installed)

- Adjustment information fed by the user

- Measuring settings

- Display Alarm settings

- Serial interface information

- Network settings and status of the LAN and WLAN interfaces

- Analog output information

- Relay output information (when applicable)

1104-127

Figure 57 Device Information on Display

Proceed in the information views by pressing the MORE button repeatedly until you get the desired information. You can browse through the information displays also with arrow buttons. Press OK to return to the basic display.

?

Use the serial line command ? to check the current transmitter configuration. Command ?? is similar but can also be used if the transmitter is in POLL mode.

104 __________________________________________________________________ M210733EN-H


Example:

>?

MMT330 / 2.04

Serial number : A3420002

Batch number : A3210034

Adjust. date : 2005-08-07

Adjust. info : Pre-adjustment Vaisala/HEL

Date : 2000-01-01

Time : 02:32:27

Serial mode : STOP

Baud P D S : 4800 E 7 1

Output interval: 0 s

Address : 0

Echo : ON

Pressure : 1013.25 hPa

Filter : OFF

Ch1 output : 4...20mA



Ch1 aw low : 0.00

Ch1 aw high : 1.00

Ch2 T low : -40.00 'C

Ch2 T high : 60.00 'C

Ch3 H2O low : 0.00 ppm

Ch3 H2O high : 500.00 ppm

Module 1 : not installed

Module 2 : AOUT-1

>

LIGHT

Use the LIGHT command to view or set the backlight mode of the display (optional). Issuing the command without specifying a mode shows the current backlight mode.

LIGHT [mode]<cr> where mode = Operating mode of the display backlight. The options are:

ON (backlight always on)

OFF (backlight always off)

AUTO (backlight automatically turns on and off when keypad is used)

Example:

>light

Backlight : OFF

>light auto

Backlight : AUTO

>

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HELP

Use the HELP command to list the commands. The available commands are determined by the device configuration and installed options.

Example:

>help

? ACAL ADDR AERR ALSEL

ASEL CDATE CLOSE CON CRH

CT CTEXT DATE DELETE DIR

DSEL DSEND ECHO ERRS FCRH

FILT FORM HELP INTV ITEST

LIGHT LOCK MODBUS MODS OIL

PLAY R RESET SCOM SDELAY

SEND SERI SMODE SYSTEM TEST

TIME UNDELETE UNIT VERS

>

ERRS

Use the ERRS command to display transmitter error messages, see Table

30 on page 146.

Example (no active errors):

>errs

No errors

>

Example (showing active error):

>errs

Error: E2 Humidity sensor open circuit.

>

MODS

Use the MODS command to display information about the optional modules that are connected to the transmitter.

Example:

>mods

Module 1 : WLAN-1 (POST: release_82000941_J; FW:

Version 82000977_K1 10/16/2008)

Module 2 : LOGGER-1 (1024 MB; HW: B; SW: 5)

>

VERS

Use the VERS command to display software version information.

Example:

>vers

MMT330 / 5.10

>

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Resetting Transmitter by Using Serial

Line

RESET

Resets the device. The user port switches to start-up output mode selected with command SMODE.

Locking Menu/Keypad Using Serial Line

LOCK

Use the LOCK command to prevent the user from entering the menu using the keypad, or to lock the keypad completely. You can optionally set a 4-digit PIN code, for example 4444.

If a PIN code has been set, the user will be prompted to enter the code when trying to access the menu. Entering the code correctly will disable the lock until the user returns back to the basic view.

LOCK [x] [yyyy]<cr> where x = Keypad locking level, range 0...2. The options are:

0 - No lock (enables full access)

1 - Menu locked, but graphs are accessible

2 - Keypad completely disabled yyyy = 4-digit PIN code. The code can only be set when keypad locking level is 1.

Examples:

>lock 1 4444

Keyboard lock : 1 [4444]

>

>lock 1

Keyboard lock : 1

>

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Serial Output Settings

The communication settings for the user port can be changed via the serial line or by using the optional display/keypad. The communication settings for the service port are fixed and not changeable.

NOTE If a communication module (LAN, WLAN, or RS-422/RS-485 interface) has been installed, the user port is not accessible. Any changes to the settings are applied to the interface provided by the module, if applicable.



2. Select Interfaces and press the ►arrow button to confirm your selection.

3. Select Serial interface and press the ►arrow button to confirm your selection.

4. Select Bit rate and Serial format by pressing the CHANGE button. Use the

▲▼ arrow buttons to select and press SELECT to confirm your selection.

5. Select the Protocol to be used by the serial output by pressing the

CHANGE button. Select the option using the

▲▼ arrow buttons and press SELECT. This is the same serial mode setting that is changed by the SMODE serial command.

- RUN mode continuously outputs the measurement message at the set interval. If you select the RUN mode, set the desired

RUN interval also.

- POLL mode enables multiple transmitters to share the same RS-

485 line. If you select the POLL mode, select the Device

address also, as each transmitter on the line must have an unique address.

- In STOP mode, transmitter outputs the transmitter software version at reset or power-up and remains silent, waiting for commands.

- The SEND mode is almost identical to the STOP mode. The only difference is that the transmitter outputs a measurement message at start-up, instead of software version.

- In MODBUS mode, only Modbus protocol communication is

available. See Chapter 5, Modbus, on page 131.

6. Select the RUN interval and the unit. Press OK to confirm.

7. Select the Device address and press SET to confirm.

8. Select ECHO, and press ON to turn to it on, OFF to turn it off.


108 __________________________________________________________________ M210733EN-H


The new user port settings set using the display/keypad are effective immediately.


NOTE You can use the serial commands to change/view the user port settings even if you are currently connected to the service port.

SERI

Use the SERI command to set the communication settings for the user port. Changed settings will be activated at next reset or power up.

SERI [b p d s]<cr> where b = Bit rate (110, 150, 300, 600, 1200, 2400, 4800, 9600,19200,

38400, 57600, 115200) p = Parity (n = none, e = even, o = odd) d = Data bits (7 or 8) s = Stop bits (1 or 2)

The settings can be changed one parameter at a time or all parameters at once.

Example (changing all parameters):

>seri 600 N 8 1

600 N 8 1

>

Example (changing parity only):

>seri O

4800 O 7 1

SMODE

Use the SMODE command to set the user port start-up operating mode.

SMODE [xxxx]<cr> where xxx = STOP, SEND, RUN, POLL, or MODBUS.

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Table 27 Selection of Output Modes

Mode Measurement Output Available Commands

STOP

SEND

RUN

POLL

Only with the SEND command. All (default mode).

One measurement message automatically at start-up, then only with the SEND command.

All.

Automatic output.

Only with the SEND [addr] command.

Only command S.

SEND [addr] and OPEN [addr].

Other commands available after

MODBUS Must be read from the transmitter using Modbus protocol. opening a line to the transmitter using the OPEN command.

Use with RS-485 buses where multiple transmitters can share the same line.

Modbus protocol only; see

Chapter 5, Modbus, on page 131.

Selected output mode will be activated at next reset or power up.

ADDR

Use the ADDR command to set the device address of the transmitter.

Addresses are required for POLL mode and MODBUS mode (serial

Modbus).

ADDR [aa]<cr> where

aa = Device address of the transmitter, range 0 ... 255 (default = 0)

Example (changing the transmitter address from 0 to 52):

>addr

Address : 0 ? 52

>

INTV

Use the INTV command to set the RUN mode output interval. The time interval is used only when the RUN mode is active. Setting the interval to zero enables the fastest possible output rate.

INTV [xxx yyy]<cr> where xxx = Delay, range 0 ... 255. yyy = Unit: S, MIN or H.

110 __________________________________________________________________ M210733EN-H


Example (setting the output interval to 10 minutes):

>intv 10 min

Output interval: 10 min

>

SDELAY

With the SDELAY command you can set delay (response time) for user port, or view currently set delay value. Adjusting the delay may be needed when half-duplex communication (typically two-wire RS-485) is used.

The delay value corresponds to tens of milliseconds (for example, 5 =

0.050s minimum answer delay). The value can be set between 0 ... 254.

Example:

>sdelay

Serial delay : 0 ? 10

>sdelay

Serial delay : 10 ?

ECHO

Use the ECHO command to set the user port echo. The command either enables or disables echo of characters received.

ECHO [x]<cr> where x = ON (enabled, default) or OFF (disabled)

NOTE When using the RS-485 interface with a 2-wire connection, always disable echo. When using a RS-232, RS-422/485 4-wire connection,

LAN, or WLAN, you can enable or disable it as you wish.

Data Recording

Data recording function is always on and collects data automatically into the memory of the device. If the optional data logger module is installed, the transmitter uses it automatically. Recorded data does not disappear from the memory when the power is switched off. Collected data can be observed in a form of a graph in the graphical view of the display or it can be listed out by using the serial line or MI70 Link program.

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Selecting Data Recording Quantities

If the device is provided with the optional display, the recorded quantities are always those selected for the display. Up to three quantities can be

recorded at a time. See section Changing Quantities and Units on page 99

for instructions on how to select the display quantities with the keypad.

DSEL

Use the serial line command DSEL to select the quantities to be recorded if the transmitter is not equipped with display/keypad. The MMT330 measures the following quantities:

- Water activity (aw)




2


DSEL [xxx]<cr> where xxx = Data recording quantity.

Example:

>dsel aw t

aw T

>

Enter the command without parameters and press ENTER to display the current recording parameters.

View Recorded Data

If the device is provided with the optional display, the graphical display shows the data of the selected quantities, one at a time. See section

Graphic History on page 68 for details about graphical display.

You may also dump the logged data to the serial line in numeric form with the following commands.

112 __________________________________________________________________ M210733EN-H


DIR

Use the serial line and enter the DIR command to check the available files.

Without the data logger module, the device records six files (six observation periods) for each selected quantity. The data logger raises the number of recorded files to seven for each quantity. Thus, the total

amount of the files varies between 6 and 21. See Table 11 on page 68.

Select, for example, three quantities (aw, T and H

2

O). The last column illustrates the number of data points that has been stored in the file.

Example (data logger module installed):

>dir

File description

1 aw (10 s intervals) 2007-05-30 08:26:50

2 aw (90 s intervals) 2007-05-30 05:25:30

3 aw (12 min intervals) 2007-05-29 05:48:00

4 aw (2 h intervals) 2007-05-19 02:00:00

5 aw (12 h intervals) 2007-03-23 12:00:00

6 aw (3 d intervals) 2006-04-20 00:00:00

7 aw (12 d intervals) 2002-12-16 00:00:00

8 T (10 s intervals) 2007-05-30 08:26:50

9 T (90 s intervals) 2007-05-30 05:25:30

10 T (12 min intervals) 2007-05-29 05:48:00

11 T (2 h intervals) 2007-05-19 02:00:00

12 T (12 h intervals) 2007-03-23 12:00:00

15 H2O (10 s intervals) 2007-05-30 08:26:50

18 H2O (2 h intervals) 2007-05-19 02:00:00

19 H2O (12 h intervals) 2007-03-23 12:00:00

>

No. of points

13996800

1555200

194400

19440

3240

540

135

13996800

1555200

194400

19440

3240

540

135

13996800

1555200

194400

19440

3240

540

135

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Example (without data logger module):

>dir

File description

1 RS (10 s intervals) 2008-04-11 23:41:10

2 RS (90 s intervals) 2008-04-11 20:41:11

3 RS (12 min intervals) 2008-04-10 21:03:41

4 RS (2 h intervals) 2008-03-31 18:03:41

5 RS (12 h intervals) 2008-02-04 12:03:41

6 RS (3 d intervals) 2007-03-04 00:03:41

7 T (10 s intervals) 2008-04-11 23:41:11

8 T (90 s intervals) 2008-04-11 20:41:11

9 T (12 min intervals) 2008-04-10 21:03:41

10 T (2 h intervals) 2008-03-31 18:03:41

11 T (12 h intervals) 2008-02-04 12:03:41

12 T (3 d intervals) 2007-03-04 00:03:41

13 H2O (10 s intervals) 2008-04-11 23:41:11

14 H2O (90 s intervals) 2008-04-11 20:41:11

15 H2O (12 min intervals) 2008-04-10 21:03:41

16 H2O (2 h intervals) 2008-03-31 18:03:41

17 H2O (12 h intervals) 2008-02-04 12:03:41

18 H2O (3 d intervals) 2007-03-04 00:03:41

>

PLAY

135

135

135

135

135

135

135

135

No. of points

135

135

135

135

135

135

135

135

135

135

Use the PLAY command to output the selected file to the serial line. If the data logger module is installed, you can specify an interval to be outputted.

Data in the output is <TAB> delimited. This is compatible with most spreadsheet programs. Before giving the command, set the local date and time with TIME and DATE commands, if needed.

PLAY [x] [start_date start_time end_date end_time]<cr> where x = Number of the data file that will be outputted, range

0...21. The numbers correspond to the output of the DIR

command; refer to the example on page 113.

Selecting number 0 will output all data files. start_date = Starting date of the interval to be outputted. Must be given in the following format: yyyy-mm-dd. start_time = Starting time of the interval to be outputted. Must be given in the format hh:mm:ss or h:mm. end_date = Ending date of the interval to be outputted. Must be given in the following format: yyyy-mm-dd. end_time = Ending time of the interval to be outputted. Must be given in the format hh:mm:ss or h:mm.

Example:

114 __________________________________________________________________ M210733EN-H


>play 3 2007-05-05 00:00:00 2007-05-06 00:00:00 aw (12 min intervals) 2007-05-05 00:00:00 121

Date Time trend min max yyyy-mm-dd hh:mm:ss

2007-05-05 00:00:00 0.2701 0.2700 0.2705

2007-05-05 00:12:00 0.2711 0.2702 0.2718

2007-05-05 00:24:00 0.2708 0.2708 0.2710

2007-05-05 00:36:00 0.2710 0.2702 0.2720

...

You can use the <ESC> key to interrupt the output listing.

NOTE Output of large amounts of recorded data can result in huge data files and take a long time, up to several days for the entire memory of the data logger at 10 second resolution. To make it easier to process the data it is recommended to select the largest suitable data interval, and to specify the start and end times carefully.

Deleting the Recorded Files

You can delete the recorded data files using the keypad/display, or the

DELETE command on the serial line. The deletion is always done for all data; you cannot delete individual files.

Note that the transmitter automatically overwrites the old data when the memory is full, so manual deletion of the recorded files is not necessary in normal use.

To delete the data files using the keypad/display:

1. Press any of the arrow buttons to open the Main Menu.


3. Select Clear graph memories by pressing the CLEAR button.

Press the YES button to confirm the selection.

CAUTION This function clears the entire data history of the transmitter, including all graphs and the content of the optional data logger module.

UNDELETE

Similarly to the DELETE command, the UNDELETE command is used without any arguments. It will recover all deleted data that has not been overwritten yet.

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Analog Output Settings

The analog outputs are set in the factory according to the order form. In case you want to change the settings, follow these instructions. See

section Third Analog Output on page 53.

Changing Output Mode and Range

Both output channels have their own DIP switch module with 8 switches,

see the position in Figure 2 on page 21 (DIP switches for analog output

settings).

1. Select the current/voltage output, switch ON either of the switches,

1 or 2.

2. Select the range, switch ON one of the switches from 3 to 7.

NOTE

0503-045

Figure 58 Current/Voltage Switches of Output Modules


1 = Current/voltage selection output switches (from 1 to 2)

2 = Current/voltage range selection switches (from 3 to 7) in analog output 1 and 2

3 = Switches for service use only. Keep in OFF position always.

Only set one mode and one range switch to ON for one output channel.

The rest of the switches must remain OFF.

116 __________________________________________________________________ M210733EN-H


Example: 0 ... 5 V voltage output selected for channel 1 and 4...20 mA selected for channel 2.

OFF ON Selection

█

█

Voltage output selected

█

█

█

█

0 ... 5 V selected

█

█

█

Current output selected

█

█

█

█

█

█

█

4 ... 20 mA selected

NOTE If you have customized the error output setting (AERR), check that the set error values are still valid after changing the output mode/range. See

section Analog Output Fault Indication Setting on page 120.

Analog Output Quantities

Use the display/keypad to change and scale the analog output quantities.


2. Select Interfaces by pressing the ► arrow button.

3. Select Analog outputs by pressing the ► arrow button.

4. Select Output 1/2/3 by pressing the ► arrow button.

5. Select Quantity by pressing the ▲▼ arrow buttons. Confirm your selection by pressing CHANGE.

6. Select the quantity by using the arrow buttons. Press SELECT to confirm your selection.

7. Select Scale, lower limit, by pressing the ▲▼arrow buttons. Press

SET to confirm your selection. Press OK to confirm your setting.

8. Select the upper limit by pressing the ▲▼arrow buttons. Use the arrow buttons to set the upper limit value. Press SET to confirm your selection. Press OK to confirm your setting.


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AMODE/ASEL

Use the serial line to select and scale the analog output quantities. Check the analog output modes with the AMODE command.

AMODE<cr>

Example:

>amode

Ch1 output : 0...1V

Ch2 output : 0...1V

>

Select and scale the quantities for the analog outputs with the command

ASEL. Note that the optional quantities can be selected only if they have been selected when ordering the device.

ASEL [xxx yyy zzz]<cr> where

xxx = Quantity of channel 1

yyy = Quantity of channel 2 zzz = Quantity of the optional analog output channel 3

Always enter the quantities for all outputs. The MMT330 measures the following quantities:


)




2


Use the ASEL [xxx yyy] command as shown in the example below when using a device with two analog outputs.

Example:

>asel aw t

Ch1 aw low : 0.00

Ch1 aw high : 1.00

Ch2 T low : -40.00 'C

Ch2 T high : 60.00 'C

>

118 __________________________________________________________________ M210733EN-H


Analog Output Tests

Use the display/keypad to test the operation of the analog outputs by forcing the outputs to known values. Measure then the outputs with a current/voltage meter.



3. Select Diagnostics by pressing the ► arrow button.

4. Select Analog output tests by pressing the ► arrow button.

5. Select one of the testing options Force 0%/50%/100% of scale.

Press TEST to confirm your selection. All outputs are tested simultaneously. The actual output value depends on the selected range.

6. Press OK to stop testing. Press EXIT to return to the basic display.

ITEST

Use the ITEST command to test the operation of the analog outputs. The

ITEST command forces the analog outputs to entered values. The analog outputs remain at these values until you enter the command ITEST without parameters or reset the transmitter.

ITEST [aa.aaa bb.bbb cc.ccc]<cr> where

aa.aaa = Current or voltage value to be set for channel 1 (mA or V)

bb.bbb = Current or voltage value to be set for channel 2 (mA or V)

cc.ccc = Current or voltage value to be set for channel 3 (optional)

(mA or V)

Example:

>itest 20 5

Ch1 (aw ) : * 20.000 mA H'CCDA

Ch2 (T ) : * 5.000 mA H'34B9

>

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Analog Output Fault Indication Setting

Factory default state for analog outputs during error condition is 0 V/ 0 mA. Please be careful when selecting the new error value. The error state of the transmitter should not cause unexpected problems in process monitoring.

Use the display/keypad to set the analog output fault indication.


2. Select Interfaces by pressing the ► arrow button.

3. Select Analog Outputs by pressing the ► arrow button.

4. Select Output 1/2/3 by pressing the ► arrow button.

5. Select Fault indication. Press SET to confirm your selection.

Enter the fault indication value by using the arrow buttons. Press

OK to confirm your setting. This value is outputted if a transmitter error occurs.


AERR

Use the serial line AERR command to change the error output.

AERR<cr>

Example:

>aerr

Ch1 error out : 0.000V ? 5.0

Ch2 error out : 0.000V ? 5.0

>

NOTE

NOTE

The error output value must be within a valid range of the output mode.

The error output value is displayed only when there are minor electrical faults such as a humidity sensor damage. When there is a severe device malfunction, the error output value is not necessarily outputted.

120 __________________________________________________________________ M210733EN-H


Extend Analog Output Range

Use the AOVER command to allow the analog output channels to exceed their specified range by 10%. The scaling of the parameter remains as before; the extra range is used for additional measurement range in the high end of the scale.

AOVER [ON/OFF]<cr>

Example:

>aover on

Extended output: ON

>

The following example illustrates how the analog output is affected.

Channel 2 outputs temperature (T) with voltage output 0 … 5 V

(0 … 60 °C). After giving the AOVER ON command, the range is

0 … 5.5 V (0 … 66 °C). Note that the 60 °C point is still at 5 V.

Operation of Relays

Quantity for Relay Output

A relay monitors the quantity chosen for the relay output. Any of the quantities available can be chosen.

Relay Setpoints

When the measured value is in between the "above" and "below" values, the relay is passive. When choosing lower value as "above" value and higher value as "below" value, the relay is passive when the measured value is not between the setpoints. You can also set only one setpoint.

See Figure 59 on page 122 for illustrative examples of the different

measurement-based relay output modes.

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Figure 59 Measurement-Based Relay Output Modes

1102-007

122 __________________________________________________________________ M210733EN-H


Hysteresis

Hysteresis function is to prevent the relay switching back and forth when the measured value is near to the setpoint values.

Relay is activated when the measured value passes the exact value of the setpoint. When returning and passing the setpoint again relay is not released before the value reaches the setpoint increased/decreased by the hysteresis value.

Hysteresis should be smaller than difference of the setpoints.

Example: When the 'active above' value a w

is 0.6 and the hysteresis value is 0.05, relay activates when a w

reaches 0.60. As the humidity decreases, relay releases at 0.55.

NOTE If both setpoints are specified and "above" setpoint is lower than

"below" setpoint, the hysteresis works in the opposite direction, that is, relay is released when the measured value passes the exact value of the setpoint.

Relay Indicating Transmitter Error Status

You can set a relay to follow the operation status of the device. By selecting FAULT/ONLINE STATUS for output quantity a relay changes state on the basis of the operation status as follows:

FAULT STATUS

Normal operation: relay active (C and NO outputs are closed)

Not measuring state (error state or power off): relay released (C and NC outputs are closed)

ONLINE STATUS

Live measurement (data available): relay active (C and NO outputs are closed)

No live data (for example: error state, chemical purge or adjustment mode): relay released (C and NC outputs are closed)

See Figure 60 on page 124 for illustrative examples of the

FAULT/ONLINE STATUSrelay output modes.

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NOTE

Figure 60 FAULT/ONLINE STATUS Relay Output Modes

1102-040

FAULT/ONLINE STATUS relays are usually used in conjunction with an analog output to obtain validity information for the output value.

If transmitter loses its power, all status-based relays are released similarly to the case of an instrument failure.

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Table 28 Relay State Examples

Criterion for

Relay Activation

Not chosen

Transmitter

Operation Status

NC-C

Connected

NO-C

Connected

Power off a a w w

below 0.5*

above 0.5*

Measured a w above 0.5

Measured a w below 0.5

Measured a w above 0.5

Measured a w below 0.5

Measurement OK

Fault status

Error active

Measurement live

Online status

Error active

* Hysteresis has an effect when relay switching is based on live measurement.

See section Hysteresis on page 123.

Enabling/Disabling Relays

You can deactivate the relay outputs for example for service purposes of your system.

Setting Relay Outputs

NOTE When you have only one relay module installed, its relays are called

“relay 1” and “relay 2”.

When you have two relay modules, the relays of the module connected to slot MODULE 1 are called “relay 1” and “relay 2” and relays connected to slot MODULE 2 are called “relay 3” and “relay 4”.

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0509-142

Figure 61 Relay Indicators on Display


1 = Lists enabled relays. Activation state shown in black. Disabled relays are not shown.

Use the display/keypad to set the relay outputs.


2. Select Interfaces, confirm by pressing the ►arrow button.

3. Select Relay outputs

, confirm by pressing the ►arrow button.

4. Select Relay 1/2/3/4

, confirm by pressing the ►arrow button.

5. Select the Quantity, confirm by pressing Change. Select the

Quantity by using the arrow buttons. Confirm your selection by pressing Select.

6. Select Act. above / Act. below. Press SET to confirm your selection. (If asked, select MODIFY if you want to set the setpoint by using the arrow buttons. Select REMOVE if you want to remove the setpoint.)

7. Select Hysteresis by using the arrow buttons. Press SET to set the hysteresis. Press OK.

8. Select Relay enable by using the arrow buttons, press ON/OFF to enable/disable the relay.

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RSEL

Use the serial line to select the quantity, setpoints and hysteresis or enable/disable the relay outputs. Enter the RSEL command.

RSEL [q1 q2 q3 q4]<cr> where q1 = Quantity for the relay 1 or Fault/Online q2 = Quantity for the relay 2 or Fault/Online q3 = Quantity for the relay 3 or Fault/Online q4 = Quantity for the relay 4 or Fault/Online

Factory setting: All relays disabled.

The MMT330 measures the following quantities:

- Water activity (aw)




2


Example of window limit switch: Selecting relay 1 to follow a w measurement and relay 2 to follow temperature measurement. Two relay setpoints are set for both relays.

>rsel aw t

Rel1 aw above: 0.00 ? 0.3

Rel1 aw below: 0.00 ? 0.4

Rel1 aw hyst : 0.00 ? 0.02

Rel1 aw enabl: OFF ? on

Rel2 T above: 0.00 'C ? 30

Rel2 T below: 0.00 'C ? 40

Rel2 T hyst : 0.00 'C ? 3

Rel2 T enabl: OFF ? on

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Example of normal limit switch: Selecting relay 1 to follow a w

, relay 2 to follow temperature, relay 3 to follow online status, and relay 4 to follow fault status.

>rsel aw t online fault

Rel1 aw above: 0.00 ? 0.8

Rel1 aw below: 0.00 ? 1.0

Rel1 aw hyst : 0.00 ? 0.01

Rel1 aw enabl: ON ?

Rel2 T above: 0.00 'C ? 30

Rel2 T below: 0.00 'C ? 60

Rel2 T hyst : 0.00 'C ? 2

Rel2 T enabl: ON ?

Rel3 ONLI above: -

Rel3 ONLI below: -

Rel3 ONLI hyst : -

Rel3 ONLI enabl: ON ?

Rel4 FAUL above: -

Rel4 FAUL below: -

Rel4 FAUL hyst : -

Rel4 FAUL enabl: ON ?

Example of using relay 1 as fault alarm: Selecting relay 1 to follow the fault status and relay 2 to follow the temperature measurement.

>rsel fault t

Rel1 FAUL above: -

Rel1 FAUL below: -

Rel1 FAUL hyst : -

Rel1 FAUL enabl: ON ?

Rel2 T above: 0.00 'C ? 30

Rel2 T below: 0.00 'C ? -

Rel2 T hyst : 0.00 'C ? 2

Rel2 T enabl: OFF ? ON

>

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Testing Operation of Relays

Testing activates relays even if they are disabled.

Use the module push buttons to activate the relays. Press the REL 1 or

REL 2 button to activate the corresponding relay.

Relay is activated: LED is lit

Relay is not activated: LED is not lit

RTEST

Use the serial line command RTEST to test the operation of the relays.

RTEST [x1 x2 x3 x4]<cr> where

x = ON/OFF

Example: Activate and then release all four relays.

>rtest on on on on

ON ON ON ON

>

>rtest off off off off

OFF OFF OFF OFF

>

Enter the command RTEST without parameters to stop testing.

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Chapter 5 ___________________________________________________________________ Modbus

CHAPTER 5

MODBUS

This chapter contains information that is needed when operating the transmitter using the Modbus protocol.

Overview of Modbus Protocol Support

The MMT330 transmitter can be accessed using the Modbus serial communication protocol. Support for Modbus protocol is available on all

MMT330 transmitters as a standard feature from software version 5.10 onward. The supported Modbus variants and the connections they use are

listed in Table 29 below.

Table 29 Supported Modbus Variants

Supported Modbus Variant

Modbus RTU (Serial Modbus)

Modbus TCP (Ethernet Modbus)

Connections

RS-232 (standard User Port)

RS-422/485 interface (optional module)

LAN interface (optional module)

WLAN interface (optional module)

The supported Modbus functions, registers, configuration options, and

diagnostics are described in Appendix A, Modbus Reference, on page

171.

Note the following limitations of the Modbus implementation:

- Modbus TCP mode accepts only one TCP connection at a time.

Design the system so that only one Modbus TCP client accesses the transmitter.

- Modbus TCP can process reliably only one Modbus transaction at a time. Reduce the polling rate of the client to avoid nested transactions.

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Taking Modbus into Use

To take the Modbus protocol into use on the MMT330, you must perform some configuration tasks using the built-in display and keypad (optional) or a PC connected to the serial line. For example, you can connect to the service port using the USB service cable (Vaisala order code: 219685).

The transmitter must be powered from a suitable power supply during configuration.

Instructions for performing the configuration are provided in the following sections:

- Enabling Serial Modbus on page 133

- Enabling Ethernet Modbus on page 134

After configuring the transmitter, perform the transmitter installation and

wiring according to the instructions in Chapter 3, Installation, on page

27.

The configuration instructions assume you are familiar with the use of the transmitter. Additional details on the display/keypad, service port use, and serial commands are available in other sections of this manual:

- The use of the display/keypad option is described in section

Display/Keypad (Optional) on page 67.

- If this is the first time you are using the USB service cable, you can

find detailed instructions in section Installing the Driver for the USB

Cable on page 81. You must install the required driver before using

the service cable.

- Configuration of the LAN and WLAN interfaces is decribed in section

LAN Communication on page 82.

- The serial commands available through the service port are described

beginning from section List of Serial Commands on page 93.

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Chapter 5 ___________________________________________________________________ Modbus

Enabling Serial Modbus

In addition to enabling the Modbus protocol in the device, Modbus over

RS-232 or RS-485 needs the following software settings: serial bit rate, parity, number of stop bits, and Modbus device address.

Using Display/Keypad (Optional)

1. Open the Main Menu by pressing any of the ▼▲◄► arrow buttons.

2. Navigate to Interfaces

► Serial Interface.

3. On the Serial Interface settings screen:

- Enable the Modbus protocol.

- Change the baud rate and parity if necessary.

- Set the Modbus device address.

1101-033

Figure 62 Serial Interface Settings

4. After changing the settings, press the EXIT button. The Modbus configuration is now complete, as configuration changes made with the display and keypad are effective immediately.


1. Open the transmitter cover.

2. Connect power supply wiring (if not using the power supply module) and power up the transmitter.

3. Connect the USB service cable between a computer and the service port of the transmitter.

4. Start the Vaisala USB Instrument Finder program (which has been installed on the computer along with the USB service cable driver), and check the COM port that the cable is using.

5. Open a terminal program, and connect to the service port. The fixed serial line settings of the service port are 19200, 8, 1, N.

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NOTE

6. Use the SMODE command to enable the Modbus mode:

>

smode modbus

Serial mode : MODBUS

>

7. If necessary, use the SERI command to check and/or change the serial interface settings for the User Port. For example, to set the

User Port serial settings to 19200 N 8 1, issue the following command:

> seri 19200 N 8 1

The number of data bits must always be 8 for Modbus RTU.

Serial Modbus interface of the MMT330 does not work with baud rates

115, 150, and 300 b/s.

8. Use the ADDR command to set the Modbus address of the transmitter. For example, to set the Modbus address to 52, issue the following command:

>addr 52

You must set a non-zero address or Modbus RTU will not work.

9. Modbus configuration is now complete. Reset or power cycle the transmitter to enable the Modbus mode, and proceed with the installation of the transmitter and the wiring of the serial interface.

Enabling Ethernet Modbus

In addition to enabling the Modbus protocol in the device, Modbus TCP needs the following software settings: IP address, subnet mask, and default gateway address. Also network name (SSID) and security settings must be configured if wireless network is used.

Using Display/Keypad (Optional)

1. Open the Main Menu by press ing any of the ▼▲◄► arrow buttons.

2. Navigate to Interfaces

► Network Settings ► IP Configuration.

3. On the IP Configuration screen, set the network configuration settings, and exit to save the changes.

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Chapter 5 ___________________________________________________________________ Modbus

1101-034

Figure 63 IP Configuration

4. Navigate back to the Network Settings menu. If you are using the

WLAN interface, select Wireless LAN Settings.

5. On the Wireless LAN Settings screen, set the network name

(SSID) and security options, and exit to save the changes.

1101-036

Figure 64 Wireless LAN Settings

6. Navigate back to the Network Settings menu. Select

Communication Protocol.

7. On the Communication Protocol screen, enable the Modbus protocol. Press the EXIT button to save the changes.

Note that the device address setting is not relevant for Modbus

TCP. In the Modbus mode, the transmitter will respond to all valid

Modbus messages with any “unit identifier” value.

1101-034

Figure 65 Communication Protocol

8. Modbus configuration is now complete, as configuration changes made with the display and keypad are effective immediately.

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NOTE


1. Open the transmitter cover.

2. Connect power supply wiring (if not using the power supply module) and power up the transmitter.

3. Connect the USB service cable between a computer and the service port of the transmitter.

4. Start the Vaisala USB Instrument Finder program (which has been installed on the computer along with the USB service cable driver), and check the COM port that the cable is using.

5. Open a terminal program, and connect to the service port. The fixed serial line settings of the service port are 19200, 8, 1, N.

6. Use the SMODE command to enable the Modbus mode:

>smode modbus serial mode : MODBUS

>

7. Configure the networking parameters of the interface you are using:

After transmitter startup, it may take a few minutes for the network interface to become available for configuration. a. Use the NET command to configure the networking parameters of both LAN and WLAN interface. You can, for example, enter the command without parameters and enter the settings as prompted:

>net

DHCP : ON ? OFF

IP address : 0.0.0.0 ? 143.154.142.102

Subnet mask : 0.0.0.0 ? 255.255.0.0

Default gateway: 0.0.0.0 ?

Web config. : ON ? OFF


OK

> b. If you are using the WLAN interface, use the WLAN command to configure the network name (SSID) and security settings. For example:

>wlan

Network SSID : NAME ? NETWORKID

Type : OPEN ? WPA-PSK/TKIP

WPA-PSK phrase ? thequickbrownfox


OK

>

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Chapter 5 ___________________________________________________________________ Modbus

For a description of the available settings, see section

Wireless LAN Configuration on page 86.

8. Modbus configuration is now complete. Reset or power cycle the transmitter to enable the Modbus mode, and proceed with the installation of the transmitter.

Diagnostic Modbus Counters

MMT330 has diagnostic counters that can be used to pinpoint Modbus problems. The counters are always active when the Modbus protocol is enabled.

Viewing Counters Using Display/Keypad

You can use the display/keypad option to view and clear the counters.

Enter the Main Menu and navigate to

System ► Diagnostics

► MODBUS Counters.

1101-037

Figure 66 Modbus Counters

Viewing Counters Using Service Port

Use the MODBUS command to view the counters:

MODBUS<cr>

Example:

>modbus

Bus messages : 0

Bus comm. error: 0

Bus exceptions : 0

Slave messages : 0

Slave no resp. : 0

Last message :

>

In addition to the diagnostic counters, the last message (received or transmitted) is shown in hexadecimal format. If the last message was a broadcast message, the suppressed response message is shown.

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The last message displayed may be incomplete if there is active Modbus traffic while using the MODBUS command.

Modbus RTU only: If the last received message was rejected because of bad CRC checksum, the MODBUS command displays the message with corrected CRC (last two bytes updated).

To clear the counters, select again the Modbus mode with the SMODE command:

>smode modbus

Disabling Modbus

If you stop using Modbus with the transmitter, set the transmitter to some other operating mode using the display/keypad option or the SMODE command.

For example, to return the transmitter to the RUN mode where the measurements are output at regular intervals, issue the following command through the service port:

>smode run

Alternatively, you can enter the Main Menu using the display/keypad option, and change the mode from the Interfaces submenu.

The other communication settings of the output interface (User Port,

LAN interface, or WLAN interface) will remain as configured, but the

Modbus protocol will be disabled.

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Chapter 6 ____________________________________________________________ ppm Conversion

CHAPTER 6

PPM CONVERSION

This chapter contains information on conversion models.

MMT330 ppm Conversion for Transformer Oils

Traditionally, moisture in transformer oil is measured by using ppm units. The ppm output shows the average mass concentration of water in oil. MMT330 has an option for ppm output provided that this has been selected when ordering the transmitter. Vaisala has this conversion readily available for mineral transformer oils.

Conversion Model with Average Coefficients

The conversion model of the MMT330 is based on the average water solubility behaviour of transformer oils. The ppm output is calculated as follows:

ppm = aw x 10

(A/(T+273.16)+B) where: aw = Water activity

A,B = Coefficients (average/oil-specific)

T = Temperature (ºC)

Generally, measurements with MMT330 give accuracy better than 10 %

of the reading. If additional accuracy is needed, see section Conversion

Model with Oil-specific Coefficients on page 140.

NOTE The internal calculation in ppm conversion uses a w

also when only %RS output is selected when ordering MMT330.

To convert %RS to a w

, divide the %RS quantity by 100: a w

= (%RS / 100)

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Conversion Model with Oil-specific Coefficients

For additional accuracy, oil-specific conversion model can be used both for mineral and silicon based oils. An oil sample has to be sent to Vaisala for modelling. As a result, the specific coefficients (A and B, see formula

1) for the transformer oil are determined by Vaisala. For additional information, please contact Vaisala.

The determined coefficients of the transformer oil can be programmed to the MMT330 by Vaisala or by a user according to the instructions presented in this chapter.

NOTE Conversion Model With Oil-specific Coefficients is always needed for

silicone based oils.

Setting Oil Coefficients Using Serial Line

If the ppm conversion and oil-specific coefficients have been programmed at Vaisala, the user does not have to set the conversion coefficients.

If a user has defined the coefficients or separately received from Vaisala the oil-specific coefficients A and B, related to the user’s own oil type, the coefficients can be set to the software of MMT330 by using a serial bus or through an RS 485/422 serial module or through keypad/display.

OIL

Use the serial line command OIL to set oil-specific parameters for ppm conversion.

Example:

>oil

Oil[0] : -1662.6999 ?

Oil[1] : 7.3694 ?

> where

Oil [0] corresponds to parameter A

Oil [1] corresponds to parameter B

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Chapter 6 ____________________________________________________________ ppm Conversion



2. Select Measuring by pressing the ► arrow button.

3. Select Oil coefficients by pressing the ► arrow button.

4. Press SET

. Set the upper value A by using the ▲▼buttons.

Confirm by pressing OK.

5.

Use the ▼ button to choose B. Press SET. Set the lower value B by using the ▲▼buttons. Confirm by pressing OK.


Determination of Oil-Specific Coefficients

The equation of the ppm calculation is: ppm = aw*10

(B+A/T)

With the following procedure the coefficients A and B can be defined for the equation:

LOG(PPM sat

)= B + A/T

Equipment needed:

NOTE

- Apparatus for determining water content ( for example, coulometric titrator and e.g. magnetic stirrer.)

- Oil test station:

- a temperature test chamber

- for example, a conical flask (1L) sealed by PTFE stopper with an inlet for a moisture probe

- MMT330 by Vaisala

- magnetic stirrer.

Procedure:

1. Define the water content of the oil sample with the titration. Use the oil moisture level that is close to real conditions in the process.

2. Measure the water activity of this sample with MMT330 at two temperatures that differ at least 20 °C. Follow the measurement stabilization illustrated by the graph.

The sample has to be sealed very carefully. If the sample is in contact with ambient air, its water content will be affected.

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NOTE If the oil sample is very dry and the temperatures are close to each other, it may cause inaccuracy to the calculation model. In order to get the best possible performance it is recommended to use oil conditions that represent real conditions in application. Recommended values for sample are a w

approx. 0.5 at 20 °C.

3. Define the correlation between a w

, T and PPM (w/w) from the measured values. Calculate A and B according to the following example.

A =

LOG ( PPM sat

[ ]

) LOG ( PPM sat

1 /

( )

1 /

( )

)

B = LOG

(

PPM sat

)

A/T1

Example: measured water content 213 ppm

T (°C)

24.1

57.6 aw

0.478

0.188 ppm saturation

213/0.478 = 445.6067

213/0.188 = 1132.979

A = (LOG(1132.98)-LOG(445.607))/(1/(57.6+273.16)-

1/(24.1+273.16)) = -1189.4581

B= LOG(445.607)-(-1189.4581)/(24.1 + 273.16) = 6.6503583

Assumptions:

The isoterm of water activity versus water concentration is linear and the solubility curve has the form of the given equation.

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Chapter 7 _______________________________________________________________ Maintenance

CHAPTER 7

MAINTENANCE

This chapter provides information that is needed in basic maintenance of

MMT330.

Periodic Maintenance

Cleaning

Clean the transmitter enclosure with a soft, lint-free cloth moistened with mild detergent.

Clean the sensor before storing the MMT330 probe and before calibration. For cleaning of the probe you need instrument air and heptane (C

7

H

16

) liquid. Dry with instrument air to prevent oxidation of the oil on the sensor. The oxidation of the oil on the sensor can cause extended response times or drifting.

1. Blow the probe with instrument air (with filter attached) to remove the remains of the oil.

2. Immerse the probe into heptane liquid and rinse out the oil (for 1 minute maximum).

3. Dry the probe with instrument air. In case you are going to calibrate the probe, remove the filter and dry the sensor with instrument air. Check that the sensor looks clean.

Changing the Probe Filter

1. Turn the filter counter-clockwise to loosen it.

2. Remove the filter from the probe. Be careful not to touch the sensor with the filter. Without the filter in place, the sensor is easily damaged – handle the probe carefully.

3. Install a new filter on the probe. When using the stainless steel filter, take care to tighten it properly (recommended force 5 Nm).

New filters can be ordered from Vaisala, see section Spare Parts and

Accessories on page 164.

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Changing the Sensor

The user can change HUMICAP® 180L2 sensors. Changing the sensor should be considered corrective maintenance, and it is not necessary in normal operation. If the accuracy of the transmitter does not seem to be within specification, it is more likely that the transmitter is in need of calibration and adjustment, and not sensor replacement. Refer to chapter

Calibration and Adjustment on page 149.

1. Remove the filter from the probe. See the instructions in section

Changing the Probe Filter on page 143.

2. Remove the damaged sensor and insert a new one. Handle the new sensor by the plastic socket. DO NOT TOUCH THE SENSOR

PLATE.

3. Perform a calibration and adjustment as instructed in section

Relative Humidity Adjustment after Sensor Change on page 154.

4. Install a new filter on the probe. When using the stainless steel filter, take care to tighten the filter properly (recommended force 5

Nm).

0508-079

Figure 67 Changing the Sensor


1 = Pull out the sensor

2 = Plastic socket

144 __________________________________________________________________ M210733EN-H


Error States

In error state the affected quantities are not measured and the output is shown as follows:

- Analog channel outputs 0 mA or 0 V (you can use the serial line command AERR or display/keypad to change this fault indication

value, see section Analog Output Fault Indication Setting on page

120.)

- Serial port outputs stars "***" instead of measurement data

- Display shows "----" instead of measurement data

- Cover LED is blinking

- Optional display: error indicator is lit.

1103-068

Figure 68 Error Indicator and Error Message


1 = Error indicator

The error indicator disappears when the error state is over and you have checked the error message. Press the INFO button to display the error message.

You can also check the error message via the serial interface by using the command ERRS. In case of constant error, please contact Vaisala; see

section Technical Support on page 147.

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Table 30 Error Messages

Error Code Error Message Action

E0

E1

E2

E3

E4

E5

E6

E7

Humidity sensor measurement malfunction.

Humidity sensor short circuit

Check the integrity of the humidity probe and the probe cable. Clean the probe from dirt, water, ice or other contaminants.

Humidity sensor open circuit Check the integrity of the humidity probe

Temperature sensor open and the probe cable. circuit.

Temperature sensor short circuit.

Temperature measurement malfunction

Check the integrity of the humidity probe and the probe cable. Clean the probe from dirt water, ice or other contaminants.

Temperature sensor current leak.

Internal ADC read error

Check the integrity of the humidity probe and the probe cables. Clean the probes from dirt, water, ice or other contaminants.

Internal transmitter failure. Remove the transmitter and return the faulty unit to

Vaisala Service.


Vaisala Service.

E9

E10

E11

Checksum error in the internal configuration memory

Internal EEPROM read error

Internal EEPROM write error

E12 … E13 Add-on module 1 (or 2) connection failure

E14 Device internal temperature out of range

E15 Internal RAM memory or software checksum error

Turn off the power and check the module connection. Turn on the power.

Ensure that the operating temperature is within the valid range.


Vaisala Service.


Vaisala Service.

E18

E19

Internal ADC reference voltage out of range

Internal analog output reference voltage out of range

E20 … E22 Configuration switches for analog output 1/2/3 set incorrectly

E24 … E25 Internal error in add-on module

1 (or 2)

E26 Communication module installed in incorrect add-on

E28 … E29 Unknown/incompatible module installed in add-on module slot

E30

E31 module slot

1(or 2)

Internal analog voltage out of range

Internal system voltage out of range

Check and re-set the switches, see Figure

58 on page 116 and Figure 30 on page 53.

Disconnect the power and check the module connection.

Disconnect the power and change the communication module to another module slot.

Ensure that the module is compatible with the MMT330.


Vaisala Service.

Check that the supply voltage is correct and the power supply can provide enough power for the instrument.

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Technical Support

For technical questions, contact the Vaisala technical support by e-mail at [email protected]

. Provide at least the following supporting information:

- Name and model of the product in question

- Serial number of the product

- Name and location of the installation site

- Name and contact information of a technically competent person who can provide further information on the problem

For contact information of Vaisala Service Centers, see www.vaisala.com/servicecenters .

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Chapter 8 ___________________________________________________ Calibration and Adjustment

CHAPTER 8

CALIBRATION AND ADJUSTMENT

NOTE

NOTE

This chapter provides information that is needed in calibration and adjustment of the product.

The MMT330 is fully calibrated and adjusted as shipped from factory.

The calibration interval depends on the application. When measuring moisture in transformer oil, the recommended calibration interval is

3 years. It is recommended that calibration is done always when there is a reason to believe that the device is not within the accuracy specifications.

The user can calibrate the MMT330 or send it to Vaisala for calibration.

For contact information of Vaisala Service Centers, see www.vaisala.com/servicecenters .

Calibration and adjustment is carried out either by using the push-keys on the motherboard, through the serial port or with the optional display/keypad.

The moisture in oil measurements are calibrated by performing a relative

humidity (RH) calibration using reference gases. See Relative Humidity

Adjustment on page 151.

Before the calibration the used sensor should be cleaned with instrument air to blow out existing oil or gently first flush with hepthane (C

7

H

16

) and dry with instrument air to decrease response time.

It is important to clean the sensor before calibration as an oily sensor can contamine the salt bath and change the reference condition.

Vaisala HUMICAP® hand-held moisture and temperature in oil meter

MM70 can also be used for calibration.

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Cleaning the Sensor

Clean the sensor before storing the MMT338 probe and before calibration. For cleaning of the probe you need instrument air and heptane liquid. Dry with instrument air to prevent oxidation of the oil on the sensor. The oxidation of the oil on the sensor can cause extended response times or drifting.

1. Blow the probe with instrument air (with the filter attached) to remove the remains of the oil.

2. Immerse the probe into heptane liquid and rinse out the oil.

3. Dry the probe with instrument air. In case you are going to calibrate the probe, remove the filter and dry the sensor with instrument air. Check that the sensor looks clean.

Opening and Closing the Adjustment Mode

1. Open the transmitter cover. The buttons needed in adjustment are on the left-hand side of the motherboard.

2. Press the ADJ button to open the adjustment mode.

3. Press the ADJ button again to close the adjustment mode.

0508-013

Figure 69 Adjustment and Purge Buttons


1 = Indicator LED

2 = Adjustment button

3 = Salt adjustment buttons. Note: purge is not available.

Adjustment menu is displayed only when ADJ button (on the motherboard inside the transmitter) is pressed.

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0706-007

Figure 70 Adjustment Menu

Table 31 Indicator Led Functions

Indicator Led Function

LED off

LED on

LED blinking evenly

Description adjustment locked adjustment available measurement not stabilized

Relative Humidity Adjustment

NOTE The moisture in oil measurements are calibrated by performing a relative humidity (RH) calibration using reference gases.

Using Push Buttons

A simple push-button adjustment is carried out by using two relative humidity references: 11 %RH (LiCl) and 75 %RH (NaCl).

LiCl reference

1.

Press the ADJ button (see Figure 69 on page 150) on the

motherboard to open the adjustment mode. The indicator LED starts flashing.

2. Remove the filter from the probe and insert the probe into a measurement hole of the 11 %RH (LiCl) in the humidity calibrator

HMK15. Use the adapter fitting for the MMT332, MMT337 and

MMT338 probes.

3. Wait at least 30 minutes for the sensor to stabilize (the indicator

LED is lit continuously). Adjustment cannot be done if the conditions are not stabilized (indicator LED is flashing).

4. When the indicator LED is lit continuously press the button LiCl~11% to adjust the 11 %RH condition. After adjustment transmitter returns to normal operation mode (indicator LED is unlit).

NaCl reference

5. When adjusting in the second reference 75 %RH, press the ADJ button to open the adjustment mode. The indicator LED starts flashing.

VAISALA _______________________________________________________________________ 151

User's Guide _______________________________________________________________________

6. Insert the probe into a 75 %RH (NaCl) reference chamber of the humidity calibrator HMK15. Use the adapter fitting for the

MMT332, MMT337 and MMT338 probes.

7. Wait at least 30 minutes for the sensor to stabilize (the indicator

LED is lit continuously). Adjustment cannot be done if the conditions are not stabilized (indicator LED is flashing).

8. Press the button NaCl 75 % to adjust the 75 %RH condition. After adjustment transmitter returns to normal operation mode (indicator

LED is unlit).


Note that the difference between the two humidity references must be at least 50 %RH.

1. Press the ADJ button (opens the ADJUSTMENT MENU).

2. Select Adjust RH measurement, press ► button.

3. Select 1-point/ 2-point adjustment, press START.

4. Select the reference as guided by the display, press SELECT.

0706-005

Figure 71 Selecting Point 1 Reference Type

5. Remove the filter from the probe and insert the probe into a measurement hole of the dry end reference chamber (for example,

LiCl: 11 %RH in the humidity calibrator HMK15.) Use the adapter fitting for the MMT332, MMT337 and MMT338 probes.

6. Wait at least 30 minutes for the sensor to stabilize. Follow the stabilization from the GRAPH display.

7. Press READY when stabilized. If you have chosen the Other reference value, enter now the reference value by using the arrow keys.

When carrying out the 2-point adjustment proceed to the next adjustment point and carry out the procedure as described in the previous steps.

8. Press YES to confirm the adjustment. Press OK to return to the adjustment menu.

9. Press EXIT to close the adjustment mode and return to the basic display. Before closing the adjustment mode, feed the adjustment

152 __________________________________________________________________ M210733EN-H


information into the device, see section Feeding Adjustment

Information on page 158.


Note that the difference between the two humidity references must be at least 50 %RH.

1.

Connect the MMT330 to a PC. See section Serial Line

Communication on page 78. Open a terminal program.

2. Press the ADJ button.

3. Remove the filter from the probe and insert the probe into a measurement hole of the dry end reference chamber (for example,

LiCl: 11 %RH in the humidity calibrator HMK15). Use the adapter fitting for the MMT332, MMT337 and MMT338 probes.

4. Enter the CRH command and press ENTER.

CRH

5. Wait at least 30 minutes for the sensor to stabilize.

6. Type C and press ENTER a few times to check if the reading is stabilized.

7. When the reading is stabilized, give the reference humidity after the question mark and press ENTER.

>crh

RH : 11.25 Ref1 ? c

RH : 11.25 Ref1 ? c

RH : 11.25 Ref1 ? c

RH : 11.24 Ref1 ? c

RH : 11.24 Ref1 ? 11.3

Press any key when ready ...

8. Now the device is waiting for the high end reference. Insert the probe into a measurement hole of the high end reference chamber

(for example,. NaCl: 75 %RH chamber in the humidity calibrator

HMK15). Use the adapter fitting for the MMT332, MMT337 and

MMT338 probes. Press any key when ready.

9. Let the probe stabilize for about 30 minutes. You can follow the stabilization by typing C and pressing ENTER.

10. When stabilized, type the high end reference value after the question mark and press ENTER.

>crh

RH : 11.25 Ref1 ? c

RH : 11.24 Ref1 ? c

RH : 11.24 Ref1 ? 11.3

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User's Guide _______________________________________________________________________


RH : 75.45 Ref2 ? c

RH : 75.57 Ref2 ? c

RH : 75.55 Ref2 ? c

RH : 75.59 Ref2 ? 75.5

OK

>

11.

OK

indicates that the adjustment has succeeded and the new calibration coefficients are calculated and stored.Enter the adjustment information (date and text) to the memory of the transmitter, see the commands CTEXT and CDATE.

12. Press the ADJ button on the motherboard to close the adjustment mode.

13. Take the probe out of the reference conditions and replace the filter.

Relative Humidity Adjustment after Sensor

Change


When using the optional display/keypad, follow the instructions in

section Using Display/Keypad on page 152 but select Adj. for new RH

sensor (instead of 1-point/ 2-point adjustment).


After sensor change, carry out the procedure as described in previous sections. Just replace the CRH command with the FCRH command.

FCRH

Example:

>fcrh

RH : 1.82 1. ref ? 0

Press any key when ready...

RH

OK

: 74.22 2. ref ? 75

>

The

OK

indicates that the calibration has succeeded.

154 __________________________________________________________________ M210733EN-H


Temperature Adjustment


1. Press the ADJ button on the motherboard to open the

ADJUSTMENT MENU. If using a warmed probe for measuring, probe heating will be interrupted when ADJ key is pressed. Wait some time for the probe to reach ambient temperature.

2.

Select ►Adjust T measurement, press ►key.

3. Select 1-point/ 2-point adjustment, press START.

4. Remove the filter from the probe and insert the probe into the reference temperature.

5. Wait at least 30 minutes for the sensor to stabilize. Follow the stabilization from the GRAPH display.

6. Press READY when stabilized. Give the reference temperature using the arrow keys.

When carrying out the 2-point adjustment, proceed to the next adjustment point and carry out the procedure as described in the previous item. Note that the difference between the two temperature references must be at least 30 ºC.

7. Press OK. Press YES to confirm the adjustment.

8. Press OK to return to the adjustment menu.

9. Press EXIT to close the adjustment mode and return to the basic display.

VAISALA _______________________________________________________________________ 155

User's Guide _______________________________________________________________________


1. Press the ADJ key on the motherboard to open the adjustment mode.

2. Remove the probe filter and insert the probe into the reference temperature.

3. Enter the command CT and press ENTER.

4. Type C and press ENTER a few times to check if the reading is stabilized. Let the reading stabilize, give the reference temperature after the question mark and press ENTER three times.

When having another reference temperature (2-point calibration) press ENTER only twice and insert the probe to the second reference. When the reading is stabilized, give the second reference temperature after the question mark and press ENTER. Note that the difference between the two temperature references must be at least 30 ºC.

Example (one-point adjustment):

>ct

T : 16.06 Ref1 ? c

T : 16.06 Ref1 ? c

T : 16.06 Ref1 ? c

T : 16.06 Ref1 ? c

T : 16.06 Ref1 ? c

T : 16.06 Ref1 ? 16.0


T : 16.06 Ref2 ?

OK

>

5. OK indicates that the calibration has succeeded. Give the calibration information (date and text) to the transmitter's memory; see the serial commands CTEXT and CDATE.

6. Press the ADJ button on the motherboard to close the adjustment mode.

7. Take the probe out of the reference conditions and replace the filter.

156 __________________________________________________________________ M210733EN-H


Analog Output Adjustment

In the analog output calibration the analog output is forced to the following values:

- Current output: 2 mA and 18 mA

- Voltage output: 10 % and 90 % of the range

Connect MMT330 to a calibrated current/voltage meter in order to measure either current or voltage depending on the selected output type.


1. Press the ADJ button to open the ADJUSTMENT MENU.

2.

Select ►Adjust analog outputs, press ►key.

3. Select the output to be adjusted Adjust analog output 1/2, press

START.

4. Measure the first analog output value with a multimeter. Give the measured value by using the arrow buttons. Press OK.

5. Measure the second analog output value with a multimeter. Give the measured value by using the arrow buttons. Press OK.

6. Press OK to return to the adjustment menu.

7. Press EXIT to close the adjustment mode and to return to the basic display.


Enter the ACAL command and type the multimeter reading for each case. Continue by pressing ENTER.

ACAL

Example (current outputs):

>acal

Ch1

Ch1

Ch2

Ch2

>

I1 (mA) ? 2.046

I2 (mA) ? 18.087

I1 (mA) ? 2.036

I2 (mA) ? 18.071

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User's Guide _______________________________________________________________________

Feeding Adjustment Information

This information is shown on the device information fields (see section

Device Information on page 104.)


1. If you are not in the adjustment menu, press the ADJ button on the motherboard (opens the ADJUSTMENT MENU).

2.

Select ►Adjustment info, press the arrow ► button.

3. Select Date, press SET. Give the date by using the arrow buttons.

Press OK.

4. Select i, press SET. Enter information text including 17 characters at maximum by using the arrow buttons. Press OK.



CTEXT

Use the CTEXT command to enter text to the adjustment information field.

Example:

>ctext

Adjust. info : (not set) ? HMK15

>

CDATE

Use the CDATE command to enter date to adjustment information field.

Set the adjustment date in format YYYY-MM-DD.

Example:

>cdate

Adjust. date : (not set) ? 2004-05-21

>

158 __________________________________________________________________ M210733EN-H

Chapter 9 _____________________________________________________________ Technical Data

CHAPTER 9

TECHNICAL DATA

This chapter provides the technical data of the product.

Specifications

Performance

Water Activity and Relative Saturation

Water activity / Relative saturation

Measurement range 0 ... 1 a w

/ 0 … 100 %RS

Accuracy (including non-linearity, hysteresis and repeatability)

0 … 0.9 a w

/ 0 ... 90 %RS ±0.02 a w

/ ±2 %RS

0.9 … 1 a w

/ 90 ... 100 %RS / ±0.03 a w

/ ±3 %RS

Response time (90%) at +20 °C in still oil (with stainless steel filter) 10 min.

Sensor HUMICAP ®

Temperature

Measurement range

MMT332

MMT337

MMT338

Temperature sensor

-40 ... +180 °C (-40 ... +356 °F)

-40 ... +180 °C (-40 ... +356 °F)

-40 ... +180 °C (-40 ... +356 °F)

Pt100 RTD Class F0.1 IEC 60751

Accuracy at +20 °C (+68 °F) ± 0.2 °C

Accuracy over temperature range (see graph below):

D

°C

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

-0.1

-0.2

-0.3

-0.4

-0.5

-0.6

-0.7

-80 -60 -40 -20 0 20 40 60 80

°C

100 120 140 160 180

0507-021

Figure 72 Accuracy over Temperature Range

VAISALA _______________________________________________________________________ 159

User's Guide _______________________________________________________________________

Operating Environment

Operating temperature for probes for transmitter body with display

Storage temperature without display with display

Pressure range for probes

Electromagnetic compatibility same as measurement ranges

-40 ... +60 °C (40 ... +140°F)

0 ... +60 °C (+32 ... +140°F)

-55 … +80 °C (-67 … +176 °F)

-40 … +80 °C (-40 … +176 °F)

See probe specifications

EN61326-1: Electrical equipment for measurement, control, and laboratory use –

EMC requirements – for use in industrial locations

Probe Specifications

MMT332

Pressure range

Probe diameter

Installation

Flange

MMT337

Pressure range

Mechanical durability

Probe diameter

Installation

Fitting Body

Fitting Body

MMT338

Pressure range

Mechanical durability

Adjustable length

Installation

Fitting Body

Fitting Body

Ball Valve Set

Sampling Cell up to 250 bar / 3625 psia

12 mm / 0.5 inch

36 mm / 1.4 inch

0 ... 10 bar / 0 ... 145 psia up to 10 bar / 145 psia

12 mm / 0.5 inch

R 3/8” ISO

NPT 1/2”

0 ... 40 bar / 0 ... 580 psia up to 40 bar /580 psia

41 ... 149/371 mm / 1.61 ... 5.87/14.6 inch

R1/2” ISO

NPT 1/2”

BALLVALVE-1

DMT242SC2

160 __________________________________________________________________ M210733EN-H


Inputs and Outputs

Operating voltage with optional power supply module

Power consumption @ 20 °C (U in

24VDC)

RS-232

U out

2 x 0 ... 1V / 0 ... 5V / 0 ... 10V

I out

2 x 0 ... 20 mA display and backlight

Analog outputs (2 standard, 3rd optional) current output voltage output

Accuracy of analog outputs at 20 °C

Temperature dependence of the analog outputs

External loads current ouputs

0 ... 1V output

Wire size

0 ... 5V and 0... 10V outputs

Digital outputs

Protocols

Relay outputs (optional)

Display

Display menu languages

10 ... 35 VDC, 24 VAC

100 ... 240 VAC, 50/60 Hz max 25 mA max 25 mA max 60 mA

+ 20 mA

0 ... 20 mA, 4 ... 20 mA

0 ... 1 V, 0 ... 5 V, 0 ... 10 V

± 0.05 % full scale

± 0.005 %/°C full scale

R

L

< 500 ohm

R

L

> 2 kohm

R

L

> 10 kohm

0.5 ... 2.5 mm

2

(AWG 20 ... 14) stranded wires recommended

RS-232

RS-422/485 (optional)

LAN (optional)

WLAN (optional)

ASCII commands

Modbus RTU

Modbus TCP

0.5 A, 250 VAC, SPDT

(optional)

LCD with backlight, graphic trend display of any parameter

Chinese, English, Finnish,

French, German, Japanese,

Russian, Spanish, Swedish

Mechanics

Cable bushing

Conduit fitting

Interface cable connector (optional) option 1 option 2

Probe cable diameter

Probe tube material

Housing material

M20x1.5 for cable diameter

8 ... 11mm/0.31 ... 0.43"

1/2" NPT

M12 series 8-pin (male) with plug (female) with 5 m /

16.4 ft black cable with plug (female) with screw terminals

5.5 mm

AISI 316L

G-AlSi 10 Mg (DIN 1725)

Housing classification IP 65 (NEMA 4X)

Transmitter weight (with probe, cable, and modules) 1.0 ... 3.0 kg (2.2 ... 6.6 lb)

VAISALA _______________________________________________________________________ 161

User's Guide _______________________________________________________________________

Table 32 Standard Probe Cable Lengths and Approximate

Transmitter Weight (in kg/lb)

Probe Type Probe Cable Length

2 m 5 m

MMT332

MMT337

1.1/2.4

1.2/2.6

MMT338 232 mm 1.3/2.9

MMT338 454 mm 1.4/3.1

1.2/2.6

1.3/2.9

1.5/3.3

1.6/3.5

10 m

1.5/3.3

1.5/3.3

1.7/3.7

1.9/4.2

15 m

-

-

-

2.2/4.9

20 m

-

2.1/4.5

-

2.5/5.6

Technical Specifications of Optional

Modules

Power Supply Module

Operating voltage

Connections

Bushing

Operating temperature

Storage temperature

UL file number

100 ... 240 VAC 50/60 Hz screw terminals for 0.5 ... 2.5 mm

2 wire (AWG 20...14) for 8...11 mm diameter cable

-40 ... +60 °C (-40 ... +140 °F)

-40 ... +70°C (-40 ... +158 °F)

E249387

Analog Output Module

Outputs

Operating temperature range

Power consumption

U out

0 ... 1 V

U out

0 ... 5V/0 ... 10V

I out

0 ... 20 mA

External loads current outputs

Max load + cable loop resistance

0 ... 1 V

0 ... 5 V and 0... 10 V

Storage temperature range

3-pole screw terminal max wire size

0 ... 20 mA, 4 ... 20 mA,

0 ... 1 V, 0 ... 5 V, 0 ... 10 V

-40 ... +60 °C (-40 ... +140 ºF) max 30 mA max 30 mA max 60 mA

R

L

< 500 ohms

540 ohms

R

L

> 2000 ohms

R

L

> 10 000 ohms

-55 ... +80 °C (-67 ... +176 ºF)

1.5 mm

2

(AWG16)

162 __________________________________________________________________ M210733EN-H


Relay Module


Operating pressure range

Power consumption @24 V

Contacts SPDT (change over), for example,

Contact arrangement Form C

Imax

Imax

Safety standard for the relay component


3-pole screw terminal / relay max wire size

RS-485 Module


Operating modes

Operating speed max

Bus isolation

Power consumption

@ 24V

External loads standard loads


Max wire size

LAN Interface Module



Operating humidity range

Power consumption @ 24V

Ethernet type

Connector

IPv4 address assignment

Protocols

Max number of Telnet/Modbus clients

WLAN Interface Module



Operating humidity range


Supported standards

Connector

IPv4 address assignment

Protocols

Max number of Telnet/Modbus clients

Security

-40 ... +60 ºC (-40...+140 ºF)

500 ... 1300 mmHg max 30 mA

0.5 A 250 VAC

0.5 A 30 VDC

IEC60950 UL1950

-55 ... +80 ºC (-67...+176 ºF)

2.5 mm

2

(AWG14)

-40 ... +60 ºC (-40 ... +140 ºF)

2-wire (1-pair) half duplex

4-wire (2-pair) full duplex

115.2 kbaud

300VDC max 50 mA

32 RL> 10kohm

-55 ... +80 ºC (-67 ... +176 ºF)

1.5 mm

2

(AWG16)

-40 ... +60 ºC (-40 ... +140 ºF)

-40 ... +85 ºC (-40 ... +185 ºF)

5 … 95 %RH max 60 mA

10BASE-T 100BASE-TX

8P8C (RJ45)

DHCP (automatic), static

Telnet, Modbus TCP

1

-20 ... +60 ºC (-4 ... +140 ºF)

-40 ... +85 ºC (-40 ... +185 ºF)

5 … 95 %RH max 80 mA

802.11b

RP-SMA

DHCP (automatic), static

Telnet, Modbus TCP

1

WEP 64/128, WPA2/802.11i

VAISALA _______________________________________________________________________ 163

User's Guide _______________________________________________________________________

Data Logger Module




Logged parameters

Logging interval

Maximum logging period

Logged points

Accuracy of the clock

Battery lifetime at -40 ... +30 ºC (-40 ... +86 ºF) at +30 ... +60 ºC (+86 ... +140 ºF)

Spare Parts and Accessories

-40 ... +60 ºC (-40 ... +140 ºF)

-55 ... +80 ºC (-67 ... +176 ºF) max 10 mA up to four with trend/min/max values for each

10 s (fixed)

4 years 5 months

13.7 million points / parameter better than ±2 min/year

7 years

5 years

Information on spare parts, accessories, and calibration products is available online at www.vaisala.com

and store.vaisala.com

.

Table 33 Spare Parts and Accessories

Description

MODULES

Relay module

Analog Output Module

Isolated RS485 Module

Power Supply Module

Galvanic Isolation Module

SENSORS

HUMICAP® 180L2

PT100 Sensor

FILTERS

Stainless Steel Filter

Stainless Steel Grid

(for applications with high flow speed, >1 m/s)

TRANSMITTER MOUNTING ACCESSORIES

Wall Mounting Kit

Installation Kit for Pole or Pipeline

Rain Shield with Installation Kit

DIN Rail Clips with Installation Plate

PROBE MOUNTING ACCESSORIES

MMT332

5 pcs O-ring Set Size 14.1x1.6

MMT337

Swagelok for 12mm Probe 3/8" ISO Thread

Swagelok for 12mm Probe 1/2" ISO Thread

Order Code

RELAY-1

AOUT-1

RS485-1

POWER-1

DCDC-1

HUMICAP180L2

10429SP

HM47453SP

220752SP

214829

215108

215109

215094

216026

SWG12ISO38

SWG12ISO12

164 __________________________________________________________________ M210733EN-H


Description Order Code

Swagelok for 12mm Probe 1/2" NPT Thread

MMT338

Fitting Body ISO1/2 Solid Structrure

Fitting Body NPT1/2 Solid Structure

Sampling Cell with Swagelok Connectors

Ball Valve ISO1/2 with Welding Joint

Manual Press

Plug Kit (ISO 1/2)

CONNECTION CABLES

SWG12NPT12

DRW212076SP

NPTFITBODASP

DMT242SC2

BALLVALVE-1

HM36854SP

218773

Serial Interface Cable

USB-RJ45 Serial Interface Cable

MI70 Connection Cable with RJ45 Connector

OUTPUT CABLES FOR 8-PIN CONNECTOR

Cable Gland M20x1.5 for 8...11mm Cable

Cable Gland M20x1.5 for 11...14mm Cable

Conduit Fitting M20x1.5 for NPT1/2 Conduit

Dummy Plug M20x1.5

WINDOWS SOFTWARE

19446ZZ

219685

211339

Connection Cable 5m 8-pin M12 Female, Black 212142

Female Connector 8-pin M12 with Screw Terminals 212416

Male Connector 8-pin M12 with Cable and Adapter 214806SP

CABLE BUSHINGS

214728SP

214729

214780SP

214672SP

MI70 Link software with RS232 Service Cable

MI70 Link software with USB Cable

OTHER

HMK15 Calibration Adapter for 12 mm Probes with

>7 mm Sensor Pins

Enclosure spare kit: hexagonal cover screws (4x) and hinge with attachment screws

215005

219916

211302SP

238509

VAISALA _______________________________________________________________________ 165

User's Guide _______________________________________________________________________

Dimensions (mm/inch)

53.5 (2.10) 38 (1.50) 38 (1.50)

183 (7.20)

169 (6.65)

53.5 (2.10)

Figure 73 Transmitter Body Dimensions

0506-035

166 __________________________________________________________________ M210733EN-H


183 (7.20)

Figure 74 WLAN Antenna Dimensions

0804-035

VAISALA _______________________________________________________________________ 167

User's Guide _______________________________________________________________________

MMT332

Figure 75 MMT332 Probe Dimensions

MMT337

0509-149

Figure 76 MMT337 Probe Dimensions

0509-146

168 __________________________________________________________________ M210733EN-H


MMT337 with Swagelok Connector

0509-148

Figure 77 MMT337 Probe with (Optional) Swagelok Connector,

Dimensions

MMT338

0509-145

Figure 78 MMT338 Probe with Stainless Steel Filter (Oil Filter),

Dimensions

VAISALA _______________________________________________________________________ 169

User's Guide _______________________________________________________________________


170 __________________________________________________________________ M210733EN-H

Appendix A _________________________________________________________ Modbus Reference

APPENDIX A

MODBUS REFERENCE

This appendix describes the Modbus functions and data of the transmitter.

Function Codes

MMT330 supports all Modbus conformance class 0 and class 1 function codes defined in Open Modbus/TCP Specification, Release 1.0.

Table 34 Supported Function Codes

Function Code

01 (0x01)

02 (0x02)

03 (0x03)

04 (0x04)

05 (0x05)

06 (0x06)

07 (0x07)

08 (0x08)

15 (0x0F)

16 (0x10)

22 (0x16)

23 (0x17)

43 / 14 (0x2B / 0x0E)

Name

Read Coils

Read Discrete Inputs

Read Holding Registers

Read Input Registers

Write Single Coil

Write Single Register

Read Exception Status

Diagnostics

Write Multiple Coils

Write Multiple Registers

Mask Write Register

Read/Write Multiple Registers

Read Device Identification

Notes

Class 1

Class 1

Class 0

Class 1

Class 1

Class 1

Class 1

Class 2

Class 0

Class 2

Class 2

Class 0 function codes are enough to access all measurement data and configuration settings of the MMT330 transmitter. In addition, all class 1 and some class 2 commands are also supported giving better compatibility and allowing more efficient communication when needed.

Modbus diagnostic and device identification data can be read out only with the function codes dedicated for those purposes (08 and 43 / 14).

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User's Guide _______________________________________________________________________

Register Map

All data available via the Modbus interface is grouped in six contiguous

blocks of registers as described in Table 35 below.

Table 35 MMT330 Modbus Register Blocks

Address

0001…0068

0257…0290

0513…0517

0769…0790

1025…1035

1281…1288

Data Format

32-bit IEEE float

16-bit signed integer

Bit field

32-bit IEEE float

16-bit signed integer

Bit field

Description

Measurement data (read-only)

Status registers (read-only)

Configuration settings

Configuration flags

The addresses are 1-based decimal Modbus data model addresses without the first digit (e.g. 0xxxx, 1xxxx, 3xxxx, or 4xxxx). Subtract 1 to get address field values used in Modbus Protocol Data Unit (PDU).

The register map is the same for all Modbus function codes. For example, function codes 03 and 04 return exactly same result, as do

01 and 02.

Function codes 01 and 02 return 0 if the corresponding register has value

0x0000 and 1 if the register is non-zero. Writing with function codes 05 or 15 effectively writes value 0x0000 or 0x0001 in the register(s).

Data Encoding

All numeric values are available both in 32-bit IEEE floating point and

16-bit signed integer formats.

32-Bit Floating Point Format

Floating point values are represented in standard IEEE 32-bit floating point format. Least-significant 16 bits of floating point numbers are placed at the smaller Modbus address as specified in Open Modbus TCP

Specification, Release 1.0. This is also known as “little-endian” or

“Modicon” word order.

NOTE Despite the specification, some Modbus masters may expect

“big-endian” word order (most-significant word first). In such case, you must select “word-swapped” floating point format in your Modbus master for MMT330 Modbus registers.

A “quiet NaN” value is returned for unavailable values. Writing any NaN or infinite value is silently ignored. A quiet NaN is, for example,

0x7FC00000; however, the master should understand any NaN value.

172 __________________________________________________________________ M210733EN-H


NOTE

NOTE

NOTE

A complete 32-bit floating point value should be read and written in a single Modbus transaction (e.g. function codes 05, 06, and 22 do not have an effect on floating point values).

16-Bit Integer Format

16-bit integer values are scaled to include the necessary decimals

(see corresponding register table for the scaling factor). Negative values

(when applicable) are represented in 2’s complement (65535 = -1, 65534

= -2, etc.).

Measurement parameters with normally positive values (for example,

0 … 1 aw) may occasionally return small negative values because of measurement inaccuracy. These negative values are returned as large 16bit integer values (2’s complement).

If the scaled value does not fit in the range 0…65535 (16-bit range), the value is “wrapped” to the range by adding or subtracting 65536 as many times as needed.

However, most of the measurement data values do not need any offset.

A zero 16-bit value is returned for unavailable values. There is no way to distinguish missing values from actual zero values if the zero value is included in the valid measurement range of the parameter.

If your Modbus master supports 32-bit floating point values, always use them instead of 16-bit integer registers.

The use of 16-bit integer values is not recommended in critical applications because you cannot distinguish true zero values from zero values generated by measurement failures.

In addition to this, 2’s complement makes negative values look like large positive values, which must be taken into account when utilizing the

16-bit register values.

When writing 16-bit values in configuration registers, they are always processed as signed integers in the range of -32768…+32767. You shall use the floating point registers to write values outside this 16-bit signed integer range. Maximum writable value is 32767 also for configuration registers that do not accept negative values.

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User's Guide _______________________________________________________________________

Measurement Data (Read-Only)

Table 36 Measurement Data Registers

Name

T a w

%RS

H

2

O

Float

0003…0004

0029…0030

0041...0042

0035…0036

Integer Unit

0258 (×0.01)

0271 (×0.0001)

°C

0277 (x0.01)

0274 (×1)

% ppm

Available measurements depend on the instrument configuration. Values may be unavailable also in case of device failure. Read status registers or exception status outputs to check for failures.

NOTE Only real-time data can be read from the instrument. Data that is recorded in the transmitter’s memory (internal memory or data logger module) cannot be read through Modbus.

NOTE

Status Registers (Read-Only)

Table 37 Status Registers

Name

Fault status

Online status

Error code (bits 15…0)

Error code (bits 31…16)

Address Description

0513

0514

0516

0517

1 = No errors

1 = Online data available

Bit field that represents the

error codes listed in Table 30 on page 146. Active errors are

set to 1. For example, if bit 14 is set to 1, error code E14 is active.

Error information can retrieved also with function code 08, sub-function

02.

Basic status information of the MMT330 transmitter is also available with the Read Exception Status function code 07. For details, see section

Exception Status Outputs on page 175.

Configuration Registers

Configuration parameter registers are used to configure the measurement.

Writing out-of-range values is silently ignored.

Table 38 Configuration Parameter Registers

Name

Oil-A

Oil-B

Float

0777…0778

0779…0780

Integer Valid Range

1029 (×0.01) ±99999.99

1030 (×0.0001) ±99.9999

174 __________________________________________________________________ M210733EN-H


Non-metric units are not available on Modbus. If they are needed, calculate the conversion outside the transmitter.

Configuration flags are used to select some basic options of the instrument and to manually start the sensor operations.

Table 39 Configuration Flag Registers

Name

Standard filtering on/off

Extended filtering on/off

Address Description

1281

1282

1 = Filtering on

1 = Extended filtering on

Flags 1281 and 1282 are mutually exclusive.

Some of the configuration registers might not have an effect depending on the instrument model and configuration.

Other configuration settings are not usually needed and are not available using the Modbus interface. The service cable must be used to change other configuration settings if needed.

Exception Status Outputs

Exception status outputs (read with function code 07) tell the summary of

the MMT330 transmitter status as described in Table 40 below.

Table 40

Output

0 (0x01)

1 (0x02)

MMT330 Exception Status Outputs

Name

Fault status

Online status

Description

1 = No errors

1 = Online data available

Status information is available also with register access; see section

Status Registers (Read-Only) on page 174.

VAISALA _______________________________________________________________________ 175

User's Guide _______________________________________________________________________

Diagnostic Sub-Functions

MMT330 supports some of the Modbus diagnostic functions described in the Modbus Application Protocol Specification V1.1b. These diagnostic

functions are accessed with function code 08. See Table 41 below for

details.

Table 41 MMT330 Modbus Diagnostics

Code Sub-Function Name Notes

00 (0x00) Return Query Data

01 (0x01) Restart Communications

Option

Cancels the “Listen Only” mode.

Data field must be set to “00 00” for Restart Communications

Option. Sub-Function 01 with data field “FF 00” is rejected.

02 (0x02) Return Diagnostic Register Non-zero if there are active transmitter errors.

For same error information, see status registers 0516 and 0517.

The value of the Diagnostic

Register is a logical OR of these two status registers.

04 (0x04) Force Listen Only Mode

10 (0x0A) Clear Counters and

13 (0x0D) Return Bus Exception Error

Count

Puts device “off-line”

Diagnostic Register cannot be

Diagnostic Register cleared

11 (0x0B) Return Bus Message Count Total number of messages seen on the bus/interface

12 (0x0C) Return Bus Communication

Error Count

Number of messages with bad

Modbus RTU CRC or Modbus

TCP frame

Number of Modbus exception responses sent

14 (0x0E) Return Slave Message Count Number of Modbus messages processed

15 (0x0F) Return Slave No Response

Count

Number of Modbus messages received without sending a response. This happens for received broadcast messages

(Modbus RTU only) or when

MMT330 is in the “Listen Only” mode.

Although Modbus Diagnostics are standardized only for serial line devices, MMT330 supports the same diagnostic functions also on

Modbus TCP.

NOTE Resetting, powering up the transmitter, or reselecting the Modbus mode

(by serial command or with the user interface) resets all Modbus diagnostic counters and cancels any “Listen Only” mode.

176 __________________________________________________________________ M210733EN-H


Device Identification Objects

MMT330 Modbus conforms to the extended identification level defined in the Modbus Application Protocol Specification V1.1b. Both stream access and individual access to the objects is supported.

Table 42

Object Id Object Name

0x00

0x01

0x02

0x03

0x04

0x80

0x81

VendorName

ProductCode

MajorMinorVersion

VendorUrl

ProductName

SerialNumber

CalibrationDate

0x82

MMT330 Modbus Device Identification

CalibrationText

Description

“Vaisala”

Product code (e.g. “MMT330”)

Software version (e.g. “5.10”)

“http://www.vaisala.com/”

Product name of the instrument

Serial number (e.g. “D0710040”)

Date of the last calibration

(e.g. “2011-02-07”, empty if not available)

Information text of the last calibration

(empty if not available)

Exception Responses

Exception responses from the transmitter are according to the Modbus

Application Protocol Specification V1.1b.

Table 43 MMT330 Modbus Exception Responses

Code Name

01

02

03

ILLEGAL FUNCTION

ILLEGAL DATA ADDRESS

ILLEGAL DATA VALUE

Reason

Unsupported function code

Address out of valid ranges

Otherwise invalid request

Accessing unavailable (unsupported or temporarily missing) registers

inside ranges specified in Table 36 does not generate an exception.

“Unavailable” value (a quiet NaN for floating point data or zero for integer data) is returned instead. An exception is generated only for any

access outside the register blocks defined in section Register Map on page 172.

VAISALA _______________________________________________________________________ 177

www.vaisala.com

*M210733EN*

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