Scanner 1141 RTU Hardware User Manual

NUFLOTM
Scanner 1141 RTU
Hardware User Manual
Manual No. 30165009, Rev. 01
NuFlo is a trademark of Cameron International Corporation (“Cameron”).
Barton, Scanner, ScanWin, and MVX are trademarks or registered trademarks of Cameron.
Modbus is a registered trademark of the Modbus Organization, Inc.
Windows is a registered trademark of Microsoft Corporation in the U.S.A. and other countries.
Acrobat Reader is a registered trademark of Adobe Systems Incorporated.
© 2007 Cameron International Corporation (“Cameron”). All information contained in this
publication is confidential and proprietary property of Cameron. Any reproduction or use of these
instructions, drawings, or photographs without the express written permission of an officer of
Cameron is forbidden.
All Rights Reserved.
Printed in the United States of America.
Manual No. 30165009, Rev. 01
July 2007
Warranty
The Company warrants all products of its manufacture and bearing its nameplate for a period of one
year after date of shipment from its factory to be free from defects in material and workmanship
subject to the following:
The Company’s liability under this warranty is limited, in the sole and absolute discretion of the
Company, to refunding the purchase price, to repairing, or to replacing parts shown to the
satisfaction of the Company to have been defective when shipped and then only if such defective
parts are promptly delivered to its factory, transportation charges prepaid. This warranty is void if
written notification is not given by Purchaser to Company within one year after said date of
shipment.
This warranty applies only if the products have been installed, operated and maintained in
accordance with the Company’s recommendations and the products have not been misused,
neglected, damaged by flood, fire or act of God, or modified or repaired, other than by the Company.
Where the Company has manufactured the products to a design of the purchaser, no liability is
accepted by the Company for design errors, which remain the responsibility of the Purchaser.
This warranty is expressly in lieu of all other warranties, obligations, conditions or liabilities,
expressed or implied by the Company or its representative. All statutory or implied warranties and
conditions, other than title, are hereby expressly negated and excluded. The Company’s liability as
stated herein cannot be altered, enlarged or extended except in writing by an officer of the Company.
The Company shall be under no liability in contract or otherwise for any loss, damage, death or
injury arising directly or indirectly out of the supply, failure to supply, or use of the products.
Replacement parts will be invoiced in the regular way with invoices subject to adjustment after the
parts claimed defective are examined at our factory. The Company reserves the right to make such
changes in details of design, construction of product arrangement as shall, in its judgment, constitute
any warranty of the Company’s supplier of such products.
The Company and its representatives will furnish, upon request, data and engineering services
relating to the application or use of its products. It will not be responsible and it does not assume
any liability whatsoever for damages of any kind sustained either directly or indirectly by any person
in the adoption or use of such data, any errors or omissions in such data, or engineering services in
whole or in part.
Warranty Limitation
The Company manufactures products which satisfy the exact definition of Quality, that is, they meet
the specifications as advertised or as stated by our customer. The products are intended to be used in
accordance with the specification and applications described in this document.
A limited warranty applies to products manufactured by Cameron’s Measurement Systems Division.
The Company will assume responsibilities for obligations, related to its products, which are
specifically noted within the written warranty for a specific product. However, the Company will
not be liable for any loss, damage, cost of repairs, incidental or consequential damages of any kind,
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Scanner 1141 Hardware User Manual
whether or not they are based upon expressed or implied warranty, contract, negligence, or strict
liability arising in connection with the design, manufacture, sale, use, or repair of the products, if
they are used outside the constraints of recommended usage as set forth herein.
Any use or application that deviates from the stated performance specification is not recommended
and could render the instrument unsafe.
The Company should be advised of any apparent deviation or deficiency from specifications
including safety-related deficiencies. A return authorization will be issued where applicable for
goods returned for inspection, calibration or repair, under warranty.
Product Warranty Statement
The warranty applicable to this product is stated at the beginning of this manual.
Should any problem arise after delivery, contact Cameron’s Measurement Systems Division
HelpDesk at 1-877-805-7226 or the Customer Service department during normal business hours at
(403) 291-4814.
Before installing the instrument, carefully read the installation instructions in this manual.
Also, be aware of the following important notices that appear throughout the manual:
WARNING notes indicate the presence of a hazard that, if ignored, can cause severe
personal injury, death or substantial property damage.
WARNING
CAUTION notes indicate the presence of a hazard that, if ignored, will or can cause
minor personal injury or property damage.
CAUTION
Please be aware that the above notices appear on the following pages:
15, 20, 25, 42, 55, 57, 58 and 63
iv
Table of Contents
TABLE OF CONTENTS
CHAPTER 1: OVERVIEW AND SPECIFICATIONS..............................................................9
Overview of the Scanner® 1141 ........................................................................................................................ 9
Enclosures....................................................................................................................................................... 10
Standard Display ............................................................................................................................................. 11
Autoscroll ..................................................................................................................................................... 12
Scanner Software ............................................................................................................................................ 13
Scanner Firmware ........................................................................................................................................... 13
IGas ............................................................................................................................................................. 13
NGas............................................................................................................................................................ 13
NFlo ............................................................................................................................................................. 14
Audit Trail ........................................................................................................................................................ 14
CHAPTER 2: INSTALLATION ............................................................................................15
Securing the Enclosure ................................................................................................................................... 16
Unpacking the Scanner ................................................................................................................................... 18
Mounting the Scanner ..................................................................................................................................... 20
Connecting the Scanner to Piping ............................................................................................................... 20
Installing and Connecting a Solar Panel ......................................................................................................... 22
Connecting the Power Supply / Charge Controller ......................................................................................... 23
Integral Charge Controller ........................................................................................................................... 23
CHAPTER 3: MAIN CIRCUIT BOARD WIRING..................................................................27
Major Components .......................................................................................................................................... 27
Switches, Jumpers, and Potentiometers ......................................................................................................... 29
Field Wiring Termination.................................................................................................................................. 37
Wiring Diagram Summary ............................................................................................................................... 39
MVT/RTD Input ............................................................................................................................................ 40
RTD Inputs ...................................................................................................................................................... 41
MVT RTD ..................................................................................................................................................... 41
Main Circuit Board RTD............................................................................................................................... 42
Analog Inputs................................................................................................................................................... 42
Analog 1-5 VDC Transmitter........................................................................................................................ 43
Analog 4-20 mA Transmitter........................................................................................................................ 44
Frequency Pulse Inputs................................................................................................................................... 44
Frequency Pulse Input DIP Switch Summary.............................................................................................. 44
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Scanner 1141 Hardware User Manual
Status Inputs and Outputs .............................................................................................................................. 49
Analog 4-20 mA Output (Optional).................................................................................................................. 50
Console Serial Port ......................................................................................................................................... 50
Auxiliary Serial Ports....................................................................................................................................... 51
RS-232C Auxiliary Serial Port ..................................................................................................................... 52
RS-485 Auxiliary Serial Port DIP Switches ................................................................................................. 53
TTL Auxiliary Serial Port.............................................................................................................................. 54
CHAPTER 4: STARTUP AND CONFIGURATION ............................................................. 55
Startup Procedure........................................................................................................................................... 55
Superbooting the Scanner........................................................................................................................... 55
Setup Steps ................................................................................................................................................. 57
MVT Calibration........................................................................................................................................... 58
CHAPTER 5: TROUBLESHOOTING.................................................................................. 59
Tools Required................................................................................................................................................ 59
Problems and Solutions .................................................................................................................................. 60
Transmitter Voltage......................................................................................................................................... 62
Test Voltages .................................................................................................................................................. 63
NVRAM Lithium Battery Voltage..................................................................................................................... 64
NVRAM Battery Change Procedure............................................................................................................ 64
Returning the Scanner to Cameron’s Measurement Systems Division.......................................................... 65
Replacing the Sealed Lead Acid Battery ........................................................................................................ 65
CHAPTER 6: PARTS LIST AND ORDER CODE ............................................................... 67
Scanner 1141C ............................................................................................................................................... 67
Scanner 1141L................................................................................................................................................ 68
Scanner 1141G ............................................................................................................................................... 69
APPENDIX A: SPECIFICATIONS ...................................................................................... 77
General Specifications .................................................................................................................................... 77
Environmental ............................................................................................................................................. 77
Enclosures................................................................................................................................................... 77
Computer..................................................................................................................................................... 77
Display......................................................................................................................................................... 78
System Board .............................................................................................................................................. 79
Communications Port .................................................................................................................................. 80
Communications Port (cont’d) ..................................................................................................................... 81
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Table of Contents
MVT/RTD Input ............................................................................................................................................ 81
RTD Element ............................................................................................................................................... 82
RTD (Analog) Inputs .................................................................................................................................... 83
Analog Inputs ............................................................................................................................................... 83
Pulse Inputs ................................................................................................................................................. 83
Discrete Inputs/Outputs ............................................................................................................................... 85
Analog Output .............................................................................................................................................. 85
Expansion Board Interface .......................................................................................................................... 86
Transmitter and Auxillary Power Supply...................................................................................................... 86
Power Supply & Battery Charge Controller ................................................................................................. 87
Accessories ..................................................................................................................................................... 90
Firmware.......................................................................................................................................................... 90
Outline Dimensions ......................................................................................................................................... 91
Scanner 1141C ............................................................................................................................................ 91
Scanner 1141L (Front and Side Views)....................................................................................................... 92
Scanner 1141L (Bottom View of Enclosure)................................................................................................ 93
Scanner 1141G............................................................................................................................................ 94
APPENDIX B: CONTROL DRAWINGS...............................................................................95
Drawing 1141-11012: Installation, Class I, Division 2 ..................................................................................... 95
APPENDIX C: PRINCIPLES OF OPERATION: ................................................................103
Central Processing Unit (CPU) .................................................................................................................. 103
Memory ...................................................................................................................................................... 103
FPGA ......................................................................................................................................................... 103
Clocks and Timers ..................................................................................................................................... 104
Power Management................................................................................................................................... 104
Analog Inputs ............................................................................................................................................. 105
RTD Inputs................................................................................................................................................. 106
Pulse Inputs ............................................................................................................................................... 106
APPENDIX D: INPUT/OUTPUT EXPANSION BOARD.....................................................107
MIO2 Expansion Board ................................................................................................................................. 107
Specifications ................................................................................................................................................ 108
General ...................................................................................................................................................... 108
Serial Port .................................................................................................................................................. 108
Analog Output ............................................................................................................................................ 108
Status In/Status Out/Pulse Outputs ........................................................................................................... 108
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Scanner 1141 Hardware User Manual
Pulse Inputs............................................................................................................................................... 109
I/O Termination ............................................................................................................................................. 110
Configuration Switches ................................................................................................................................. 111
Status Input/Output and Pulse Output Circuits ......................................................................................... 111
Serial Port Switches .................................................................................................................................. 111
Pulse Input Switches ................................................................................................................................. 111
Analog Output Switch................................................................................................................................ 112
MIO2 Expansion Board Installation............................................................................................................... 112
APPENDIX E: FLASHING THE SCANNER...................................................................... 113
Preparing to Flash......................................................................................................................................... 113
Flashing with WinsLoad ............................................................................................................................ 114
viii
Chapter 1: Overview and Specifications
Chapter
1: Overview and Specifications
Overview of the Scanner® 1141
The Scanner® 1141 is an economical, single-stream or dual-stream measurement Remote Terminal
Unit (RTU) with flow and pressure control capability. It offers a powerful alternative to chart
recorders in gathering data for natural gas production and includes a full range of operator-selectable
mass, energy, and volume algorithms. The Scanner 1141 is Class I, Div. 2 certified by CSA (US and
Canada) for use in hazardous areas.
A serial MVT (multi-variable transducer) mounts directly to the Scanner 1141 to provide accurate,
low-cost measurement of static pressure, differential pressure, and temperature in a single device.
The MVT is connected to the Scanner 1141 with an interconnect board that also provides an RTD
input.
The 1141 also accepts static pressure, differential pressure, and temperature inputs from the NuFlo
MVX®-II multi-variable transmitter, as well as inputs from low-power (1-5 VDC) and 4-20 mA
transmitters, RTDs, and pulse-producing devices such as the NuFlo and Barton turbine meters.
The Scanner 1141 stores up to 60 days of flow history in nonvolatile memory with an audit trail of
all events, alarms, and user changes. A separate replaceable lithium backup battery secures this
information against power failures. Stored data can be downloaded on-site or communicated to a
central location.
An integral rechargeable battery module uses a solar panel and contains a temperature-compensated
charge controller and a 6V or 12V air-transportable, sealed lead acid (SLA) battery.
See Battery Charge Indicator, page 89, for a description of the four basic states or stages of battery
charging.
The Scanner 1141 provides battery/power voltage for powering transmitters and communication
devices. A 12Vdc supply for powering transmitters and a 5-VDC, 200-mA supply is optionally
available for low-power radios. The Scanner 1141 communicates with local gas chromatographs,
and supports ScanCom and Modbus. Other custom protocols may also be supported. For remote
communications, the Scanner 1141 supports radio, modem, phone, and satellite access. An optional
lightning arrestor is also available. Currently, remote communication devices and lightning arrestors
require CSA special acceptance.
The power management system ensures that the Scanner 1141 consumes minimum power while
collecting and processing data.
Standard communications and status/pulse inputs are easily expanded.
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Scanner 1141 Hardware User Manual
The following features in the Scanner 1141 provide convenient and flexible operation:
Configurable Memory - A full set of menu-selectable calculation options are stored in Flash
memory in each Scanner 1141. As new industry standards are adopted, new programs are easily
loaded from a PC with WinsLoad or ScanFLASH Utility software (See Appendix E: Flashing
the Scanner, page 113).
Security - Five security levels and selectable display options provide easy access to core functions
while maintaining full protection of configuration and flow history.
Power Supplies - Choose from line power or various battery configurations with thermoelectric or
solar charging options to minimize installation costs and meet site and hazardous area safety
requirements.
Sampling Frequency - Select end-device sampling rates that optimize the Scanner 1141’s ability to
simultaneously measure/control flow and pressure while conserving power.
Calibration - A variety of methods are available for linearizing end devices to maintain the highest
accuracy. A detailed record of calibration information is stored automatically in the Scanner
user change log and can be used to monitor and diagnose transmitter performance.
Controls – Two types of controllers are available: (1) a basic proportional/integral controller and (2)
an IEC 61131 programmable controller called ScanPLC. Various control options are easily
configured using simple menus with input/output selections for both throttling and ON/OFF
control. Four status input/outputs and an analog output make the Scanner 1141 ideal for:
•
proportional integral control
•
emergency shutdown
•
run switching
•
programmable logic status
•
well optimization
Enclosures
The Scanner is available in three enclosure designs:
•
1141C— NEMA 4 or optional 4X, fiberglass-reinforced plastic, 14 1/2 in. wide x 16 1/2 in. high
x 8 1/3 in. deep (shown on the manual cover, left)
•
1141L—NEMA 3, painted steel, 12 in. wide x 12 in. high x 8 in. deep (shown on the manual
cover, right)
•
1141G—Chassis for mounting in an enclosure or panel (ideal for integrators and
engineering/construction firms), 9.6 in. wide x 10.1 in. high x 2.5 in. deep
10
Chapter 1: Overview and Specifications
Standard Display
The standard display on the Scanner 1141 is a large 2-line × 16-character liquid crystal display
(LCD) with optional backlighting.
To save power, the display can be configured to shut off automatically after a user-specified time
period (usually about 30 seconds). For the backlight option, an LCD PwrSav jumper can be
configured to turn off both the display and the backlight (jumper is in the ON position), or to turn
off only the backlight (jumper is in the OFF position) when the Display Timeout is reached.
The Scanner 1141 is equipped with a button that is pressed to “wake-up” the display (Figure
1.1).
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Scanner 1141 Hardware User Manual
Figure 1.1—Display “wake-up” button
Auto-scroll
The display “auto-scrolls” through a list of user-definable readouts. Each item is held on the
display for a configurable amount of time and is then replaced by the next item in the list. An
operator can pause the auto-scroll on any displayed item by pressing the “wake-up” button.
The following is a sample of an auto-scroll screen:
Run 1 Pf On
492.00000 PSI
While in auto-scroll, the following unit status screen is displayed each time the Scanner
completes a loop through the list:
Time= 09:00 ML
Date= Jan 01/95
12
Chapter 1: Overview and Specifications
The display will shut off automatically after a configurable amount of time (usually about 30
seconds). To “wake-up” the display, press the “wake-up” button.
Scanner Software
ScanWin Lite is a Windows™-based software program for monitoring, configuring and
downloading Scanner Measurement RTU data on-site. ScanWin Lite’s “wizards” guide the
operator through the setup of hardware, flow runs, and primary devices as well as the collection
of hardware, system, and flow run data. Reports can be exported and printed from ScanWin.
ScanWin Lite also facilitates the upload and download of configuration settings.
ScanWin Pro, an optional upgrade from ScanWin Lite, combines all of the functionality of
ScanWin Lite with a flow run catalog and a relational database that stores historical information
for off-line review. ScanWin Pro also supports the configuration of advanced control and data
capture functions and various connection methods for remote communication with the Scanner
1141.
Scanner Firmware
The Scanner 1141 supports current NGas, NFLo and IGas firmware. Gas calculations meet both
North American (NGas/NFLo) and international measurement standards (IGas).
All three programs accept signals from orifice or turbine meter inputs and RTD temperature
inputs. Gas composition values can be automatically updated through a gas chromatograph
interface using the RS-232 communications port, or they can be manually entered.
All calculations are performed in SI metric units. The Unit Manager automatically converts other
units as required.
IGas
The international standard (IGas) includes ISO-5167, which supports a variety of differential
pressure meters, venturi and flow nozzles. ISO-T30SC1088 is supported for turbine meter
measurement.
NGas
NGas firmware solves Manual of Petroleum Measurement Standards (MPMS), and American
Gas Association (AGA) (Reports 3 (1992), 5, and 7) calculations including volume, mass, and
energy. The calculation speeds meet or exceed API standards for flow computers. The
supercompressibility calculations performed include:
•
AGA-8 (1992)
•
Redlich-Kwong
•
Standing Katz
13
Scanner 1141 Hardware User Manual
•
An interpolation method
•
GERG Virial Equation for Field Use
•
Standard GERG Virial Equation
NFlo
NFLo performs the same calculations as NGas, plus liquid properties calculations based on the
API Manual of Petroleum Measurement Standards (MPMS) chapters 11.2.1, 11.2.2, 11.2.3 and
API 2540.
Audit Trail
The Scanner 1141 maintains a detailed audit history of all configuration records, user changes
and system alarms. It also maintains a history of events including hourly and daily flow history.
The Event log operates as a circular buffer that contains 100 typical events. Each new event
added to the log causes the oldest event to be discarded. If the User Change log is full, it will not
accept any further changes or inputs until the user downloads the log. This feature ensures that
the audit trail is continuous. Up to 60 days of history records can be maintained in nonvolatile
memory.
14
Chapter 3: Main Circuit Board Wiring
Chapter
2: Installation
CAUTION
ALWAYS TURN OFF POWER TO THE SCANNER 1141 BEFORE REMOVING ANY
ELECTRONIC CIRCUIT BOARDS. FAILURE TO DO SO CAN DAMAGE THE SCANNER.
CIRCUIT BOARDS ARE SUBJECT TO DAMAGE IF EXPOSED TO STATIC ELECTRICITY.
CAUTION
CIRCUIT BOARDS MUST BE HANDLED AND INSTALLED IN AN ENVIRONMENT FREE OF
STATIC ELECTRICITY AND THE OPERATOR MUST BE GROUNDED.
WHEN REMOVING CIRCUIT BOARDS FROM THE SCANNER 1141, ALWAYS PLACE THEM IN PROTECTIVE
CONDUCTIVE ENVELOPES.
NEVER SUBJECT THE RTU TO AMBIENT OR OPERATING TEMPERATURES BEYOND -40°C to +60°C
(-40°F to +140°F). FOR ADDITIONAL INSTRUMENT SPECIFICATIONS, SEE APPENDIX A.
Note: Circuit boards returned to Cameron’s Measurement Systems Division factory for repair must be
properly packed for static protection. If they are not, the boards will not be covered by the
Cameron warranty.
WARNING—EXPLOSION HAZARD
ENSURE THAT THE AREA IS NON-HAZARDOUS BEFORE CONNECTING A PC TO A
SERIAL PORT, OPENING THE ENCLOSURE OR ADDING OR REMOVING ANY WIRES.
WARNING
FOR CLASS I, DIVISION 2 INSTALLATIONS, ACCESS TO THE INSIDE OF THE
ENCLOSURE MUST REQUIRE A TOOL. ACCEPTABLE LOCKING DEVICES ARE TIEWRAP, SEAL WIRE, A LOCK OR A NUT AND BOLT.
15
Scanner 1141 Hardware User Manual
Securing the Enclosure
Figures 2.1 through 2.4 show examples of materials that are appropriate for securing the 1141 enclosure
for Class I, Division 2 installations so that a tool is required to gain access. A lock may also be used to
secure the enclosure.
The seal wire, shown in Figures 2.3 and 2.4, must be used for custody transfer applications where
government regulation agencies such as Measurement Canada require the seal.
Figure 2.1—1141L with a tie-wrap fastener
Figure 2.2—1141C with a nut and bolt fastener
16
Chapter 3: Main Circuit Board Wiring
Figure 2.3—Seal wire installation on an 1141C latch (left) and an 1141L latch (right)
Figure 2.4—Seal wire installation on an 1141C hinge (left) and an 1141L hinge (right)
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Scanner 1141 Hardware User Manual
The following chart outlines the sequence of steps required for installing the Scanner 1141 RTU:
Table 2.1—Installation Summary
Step
Description
Reference Section
1
2
3
4
Unpacking the Scanner
Mounting the Scanner
Connecting the Scanner to piping
Connecting the power supply and charge controller
Page 18
Page 199
Page 20
Page 23
Unpacking the Scanner
The Scanner 1141 is carefully inspected during manufacturing and before shipment. However, to ensure
that no damage occurred during shipment, inspect the equipment as you unpack it. The following items
should be included with each shipment:
•
Scanner 1141, completely assembled (Figures 2.5 and 2.6)
•
Battery (optional)
•
RTD (optional)
•
Solar panel (optional)
•
ScanWin Lite software CD
To remotely configure or collect data from the Scanner 1141, an IBM-compatible PC with Microsoft
Windows operating system and ScanWin Lite (or ScanWin Pro) user interface software is required.
18
Chapter 3: Main Circuit Board Wiring
Figure 2.5—Components of 1141C
Figure 2.6—Components of 1141L
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Scanner 1141 Hardware User Manual
CAUTION
MOUNT BATTERY TERMINALS TOWARD THE FRONT OF THE ENCLOSURE TO HELP
PREVENT THE TERMINALS FROM CONTACTING THE INTERNAL METAL BRACKETS.
CAUTION
Mounting the Scanner
A universal 2-in. bracket is used to mount the Scanner 1141C and 1141L to a wall or a pipe. The 1141G
is surface-mounted using the four holes on the mounting plate. See Outline Dimensions, page 91 for
size and location of brackets.
Connecting the Scanner to Piping
All piping connections are made in accordance with standard practices. For orifice meters, consult API
Chapter 14.3, Part 2 or AGA-3, Part 2 (1991) for more information. For turbine meters, consult API
Chapter 5.3 or AGA-7.
20
Chapter 3: Main Circuit Board Wiring
Figure 2.7—Typical installation of Scanner 1141C/L with a radio or modem for Class I, Div. 2 installations
(integral communications)
Note: Solar panels must be installed in accordance with Div. 2 wiring methods, using TECK cable
or conduit. See control drawing 2 on page 97.
The radio antenna must be installed per Div. 2 wiring methods. See control drawing 3 on page
98.
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Scanner 1141 Hardware User Manual
Figure 2.8—Typical installation of Scanner 1141C/L with remote communications
Installing and Connecting a Solar Panel
Mount the solar panel on a post facing the equator, or mount it directly to a flat surface (see chart
below for tilt angles). At the equator, the mounting surface should face upward. Mount the panel high
enough above the ground to prevent damage or tampering.
Site Latitude
0°
5° - 20°
21° - 45°
46° - 65°
66° - 75°
22
Optimum Tilt Angle
10°
Latitude +5°
Latitude +10°
Latitude +15°
80°
Chapter 3: Main Circuit Board Wiring
Tilt Angle
Sun
Figure 2.9—Tilt angles to be observed when mounting the solar panel
Note: Angles are marked on the bracket of the solar panel (0° - 90° tilt).
Connecting the Power Supply / Charge Controller
Power supply/solar panel wires enter the enclosure through the side or bottom conduit entry (Figures 2.5
and 2.6). Refer to Outline Dimensions, page 91 for size and location of the conduit entry. The charge
controller is integral to the main board.
See Figures 2.7 through 2.9 for reference to various installation types.
See Appendix B: Control Drawings for information about installation in a hazardous location.
Integral Charge Controller
For installation in Class I, Division 2 hazardous locations, the charge controller/power input are integral
to the Scanner 1141 main board.
CAUTION
This caution is only applicable when a battery is connected to terminals 2 & 3 (BATT+ &
BATT-)
CAUTION
The power supply must be current limited to 10 Amps maximum and also be short circuit
protected.
All solar panels are short circuit capable and can therefore be used with the 1141, provided they do not
exceed 10 Amps.
In normal operation the 1141’s charging module will allow electrical current to flow to the battery
unrestricted. The amount of current flow will vary depending on size of the battery and present charge
level (voltage) of the battery and the voltage of the power supply.
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Scanner 1141 Hardware User Manual
The Scanner can be powered by a solar panel or a 6-28 VDC power supply (10 amps, max.). To connect
power to the instrument, perform the following steps:
1. Wire the solar panel or power to the barrier terminal block in the back of the 1141 enclosure,
connecting the red wire (+) to terminal 2 and the black wire (–) to terminal 3, as shown in Figure
2.8. For an 1141G, it is acceptable to wire directly to the Power+ and Power- terminals (terminals
2 and 3) in the top right corner of the main circuit board (Fig. 2.10)
Figure 2.10—Barrier terminal block for wiring a solar panel or power supply to the Scanner 1141
2. Open the ScanWin program and navigate to Setup> Scanner Setup>Power supply type to select
the battery type used (Figure 2.11).
24
Chapter 3: Main Circuit Board Wiring
Figure 2.11—Power supply type selection
CAUTION
CAUTION
BEFORE CONNECTING A 6V BATTERY, MAKE SURE THE UNIT IS CONFIGURED FOR A
6V BATTERY. IF THE UNIT IS CONFIGURED FOR A 12V BATTERY, CONNECTING A 6V
BATTERY TO IT COULD OVERCHARGE THE BATTERY. TO PREVENT AN ELECTRICAL
SHORT, BEFORE SUPPLYING POWER TO THE UNIT, MAKE SURE THE LEADS FROM
BATT + TERMINALS ARE NOT TOUCHING METAL OR EACH OTHER.
3. Connect a 6V or 12V battery to the Batt+ and Batt- terminals (terminals 4 and 5) as follows:
a. Connect the factory-installed wire (containing a 10-amp inline ¼ x 1 ¼-in. ABC-10 ceramic
fast-blow fuse) extending from the Batt+ terminal (terminal 4) to the positive (+) terminal of
the battery. A label including the model number for the fuse is attached to the wire for
convenience in ordering replacement fuses (see Figure 2.12).
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Scanner 1141 Hardware User Manual
Figure 2.12—Label for identifying fast-blow fuse
b. Connect the factory-installed black wire extending from the Batt- terminal (terminal 5) to the
negative (-) terminal of the battery (Figure 2.13).
Figure 2.13—Battery connections on the main circuit board
See Chapter 3: Main Circuit Board Wiring for additional wiring information.
See Appendix B: Control Drawings for information about installation in a hazardous location.
26
Chapter 3: Main Circuit Board Wiring
Chapter
3: Main Circuit Board Wiring
Major Components
The main circuit board, located on the inside of the door on 1141C and 1141L models, contains all of the
switches, jumpers, terminal blocks, and other connectors required for wiring the Scanner 1141 to a power
supply, a charge controller, and communication devices, and for enabling the Scanner to utilize various
input/outputs.
This section will describe each of the primary switches involved in configuring the operation of the
Scanner 1141. Figure 3.1 provides a quick reference for locating switches, terminals, and other
connectors.
In addition to the main board, an optional multipurpose I/O expansion board can be added to provide an
additional MVT/RTD/TTL serial port, a 1-5V/4-20 mA analog output, a pulse input and up to 4 multiinterface pulse output/status input/outputs. For more information, see Appendix D: Input/Output
Expansion Board, page 107.
.
27
Scanner 1141 Hardware User Manual
Figure 3.1— Scanner 1141 main circuit board
28
Chapter 3: Main Circuit Board Wiring
Switches, Jumpers, and Potentiometers
Note:
It is very IMPORTANT that the following jumper settings be observed:
CN11 – “RAM Size” jumper; “High” is 96 kbytes, “Low” is 64 kbytes
CN20 – “Backup Batt” jumper; position across upper pins to enable backup battery power
for non volatile memory (NVRAM).
CN21 - “LCD PwrSav” jumper; for optional backlight displays, position jumper across
upper pins to shut off display when inactive; position jumper across lower pins to turn off
backlighting only during periods of inactivity.
Table 3.1 summarizes the switches, jumpers and potentiometers located on the main board. They are
organized in the order they appear on the board, from top to bottom along the left side of the board.
Component
#
SW11
SW9
SW8
P3
P2
CN21
Table 3.1—Switches, Jumpers and Potentiometers
Description
Function
Step(s) for
Enabling/Disabling
Config Lock
Prevents superbooting of the Tighten the screw to lock the
Scanner; prevents changes
switch. See Config Lock
(SW11) page 31.
to many items in flow run
configuration.
Pwr
Supplies power to the
Move switch in the “down”
Scanner in the On position;
position to turn power off.
provides for properly
Move switch in the “up”
supervised system shutdown position to turn the power
in the Off position.
on.
Display Wakeup
Turns on the display when it Press button to turn on the
has timed out and shut down display.
Contrast
Adjusts LCD contrast
Using a small slotted
screwdriver, rotate the
control clockwise to increase
contrast; rotate
counterclockwise to
decrease contrast.
Bklight
Adjusts backlight brightness
Using a small slotted
(only functions if backlit
screwdriver, rotate the
option is installed)
control clockwise to increase
brightness; rotate
counterclockwise to
decrease brightness.
LCD PwrSav
Allows the display optional
Position jumper across
backlight to timeout (turn off) upper pins for display and
separate from the display,
backlight timeout; position
during periods of inactivity to jumper across bottom pins
conserve power.
for backlight only timeout.
29
Scanner 1141 Hardware User Manual
30
CN20
Backup Battery
Enables and disables the
lithium backup battery power
to the NVRAM
SW6
Serial Port A02
SW5
Pulse Input A07
SW4
Super Boot
SW3
Program Erase
CN11
RAM Size select
RS-485 termination and
pullup/pulldown resistors
Supports frequency pulse
inputs from turbine magnetic
pickups, preamplified turbine
signals, open-collector and
contact closures with a
debounce filter.
Erases all configuration and
flow data
Erases FLASH ROM
application program so that
new firmware can be
FLASHED
Determines how the
system’s base 256 Kbytes of
memory is partitioned
SW2
Serial Port A21
SW1
Pulse Input A14
CN3
Analog Output mode
CN4
FPGA Load Jumper
RS-485 termination and
pullup/pulldown resistors
Supports frequency pulse
inputs from turbine magnetic
pickups, preamplified turbine
signals, open-collector and
contact closures with a
debounce filter.
Analog output fail mode
goes to zero or holds last
value when Scanner 1141 is
off.
Enables programming of the
FLASH memory “boot” block
Position jumper across
upper pins to enable lithium
backup battery; position
jumper across bottom pins to
disable lithium backup
battery.
See Auxiliary Serial Ports,
pg. 51.
See Frequency Pulse
Inputs, pg. 44.
Hold button in while turning
power on.
Hold button in while turning
power on.
Move jumper to “high” or top
position to select 96K RAM
and 164 Kbytes of NVRAM;
move jumper to “low” or
bottom position to select 64K
RAM and 192 Kbytes of
NVRAM.
See Auxiliary Serial Ports,
pg. 51.
See Frequency Pulse
Inputs, pg. 44.
When Scanner is turned off,
with jumper in upper position
(Zero), the output will go to
approximately 1 mA. With
jumper in lower position
(Last), the output will be held
in last known position.
Jumper should always be in
place.
Chapter 3: Main Circuit Board Wiring
Below is a detailed description of the functions of each of the switches shown in Table 3.1.
Config Lock (SW11)
The optional Configuration Lock switch (SW11) is legally required for
custody transfer applications in some locations. When the Configuration
Lock mechanism is installed, it is located beside the Power switch SW9. It
consists of a locking hardware hex barstock with a spring and screw
assembly affixed above a push-button switch. When the screw is tightened,
the spring depresses the switch. As long as this button is depressed, the
Scanner cannot be superbooted and most items in the flow run
configuration cannot be changed.
To LOCK the switch, tighten the screw until a click is heard. Continue
tightening the screw until it is possible to insert the sealing wire through
the hex barstock/screw. Figure 3.2 shows the configuration locking
mechanism with a seal wire passing through the standoff and screw.
To flash or superboot the Scanner 1141 RTU, switch SW11 must be in an
UNLOCKED state.
Figure 3.2— Configuration lock with seal wire in place
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Scanner 1141 Hardware User Manual
Pwr (SW9)
This switch performs a properly supervised system shutdown when placed
in the OFF position. SW9 generates a power fail interrupt to the CPU and
after a 10-ms delay, shuts the power off to the entire system board.
Figure 3.3— Switches SW9 and SW8, and potentiometers P3 and P2 (upper left corner of main board)
Placing SW9 in the ON position causes a “power on” restart. A “power on”
restart interrupts the flow calculations but does not affect the configuration
or historical flow data if the NVRAM lithium backup battery (CN20) is
enabled. Power-on restarts are logged in the event log. The display will
show:
Power on Restart
Display Wakeup (SW8) If the display is configured to timeout and turn off, pressing the SW8
button will turn on the display. See Figure 3.3.
32
Contrast (P3)
The LCD display contrast is adjusted by turning the screw. See Figure 3.3.
Bklight (P2)
This potentiometer adjusts the brightness of a backlit display (available
only on configurations with backlit display). See Figure 3.3.
LCD PwrSav (CN21)
When a backlit display is configured to timeout and turn off, and the CN21
jumper is in the ON position, the display will turn off completely. When
the CN21 jumper is in the OFF position, the backlighting will turn off,
leaving the display on in a standard or non-backlit mode. See Figure 3.4.
Chapter 3: Main Circuit Board Wiring
Figure 3.4— CN20 and CN21 connectors
Backup Batt (CN20)
Jumper CN20 (Figure 3.4) enables and disables the lithium backup battery
power to the NVRAM. The Scanner 1141 is shipped with the battery
jumper in the OFF position. Set the jumper to ON before configuring the
flow computer and leave the jumper in the ON position when the Scanner
1141 is in operation. Loss of input power while the jumper is OFF will
scramble the entire contents of the NVRAM (including all configuration
and flow data), and a “superboot” will be necessary.
Note: Storage of the Scanner with the lithium battery jumper (CN20) in the ON position will drain
the lithium battery; if the lithium battery is drained, it must be replaced. If the computer is
stored without power for extended periods (i.e. a week or more), set the jumper CN20 to OFF.
Serial Port A02 (SW6) Serial port A02 (shown in Figure 3.5) is one of two auxiliary serial ports
(see also Serial Port A21) that can be software-configured to support either
RS-485 or RS-232C communications, depending on which hardware
options are installed. (Refer to the ScanWin manual, Chapter 7: About the
System).
For RS-485 communications, Resource A02 uses SW6 with terminals 14
and 15; if these terminals are not present, the RS-485 option is not
installed.
Switch 1 termination enabled when switch is closed. Termination can be
used if this is the last device in the RS485 loop, With low baud rates of
19200 bps the termination is not normally required.
Switch 2 pullup resistor enabled when switch is closed. Used with switch
3.
Switch 3 pulldown resistor enabled when switch is closed. Used with
switch 2.
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Scanner 1141 Hardware User Manual
For RS-232 communications, Resource A02 uses SW 6 and terminals 9
through 12; if these terminals are not present, the RS-232 option is not
installed.
Figure 3.5—Switches SW6, SW5, SW4 and SW3
Serial Port A21 (SW2) Auxiliary serial port A21 (shown in Figure 3.6) is one of two auxiliary
serial ports (see also Serial Port A02) that can be can be softwareconfigured to support either RS-485 or RS-232C communications, (refer to
the ScanWin manual, Chapter 7: About the System).
For RS-485 communications, Resource A21 uses SW2 with terminals 46
and 47; if these terminals are not present, the RS-485 option is not
installed.
For RS-232 communications, Resource A21 uses SW2 and terminals 41
through 44; if these terminals are not present, the RS-232 option is not
installed.
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Chapter 3: Main Circuit Board Wiring
Figure 3.6— CN11 jumper, SW2, SW1, CN3, and FPGA Load jumper
Pulse Input (SW5)
SW5 is a six-position DIP switch that allows the user to configure the
desired electrical interface. Resource A07 uses terminals 23-24 and SW5 of
the DIP switch. If these terminals are not on the main board, the frequency
pulse input option is not installed. See Frequency Pulse Inputs, page 44,
for DIP switch settings and wiring diagrams for various electrical
interfaces.
Super Boot (SW4)
When the SW4 button is pressed (Figure 3.5) and the Scanner 1141 is
turned on, a “superboot” occurs. A “superboot” erases all configuration and
flow data and is required when first commissioning the unit [after turning
the NVRAM battery switch (CN21) on].
A superboot is required for changes to the RAM Size jumper (CN11)
settings to become effective. (See RAM Size description on page 36.)
When the SW4 is not pressed and the Scanner 1141 is turned on, a normal
restart occurs, as described in Startup Procedure, page 55.
For more information, see Superbooting the Scanner, page 55.
Program Erase (SW3) SW3 enables programming of the FLASH memory array by connecting the
+12V programming voltage to the VPP pin of each of the FLASH memory
devices. Unless new firmware is being downloaded to the system, do
not press SW3 when the power is turned on.
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Scanner 1141 Hardware User Manual
RAM Size (CN11)
This jumper determines how the system’s base 256 Kbytes of memory
is partitioned. Note the “high” and “low” markings on the circuit board
(Figure 3.6). Position the jumper across the top two pins to select the
“high” setting: position the jumper across the bottom two pins to select
the “low” setting.
“Low” is 64 Kbytes of RAM and 192 Kbytes of NVRAM.
“High” is 96 Kbytes of RAM and 164 Kbytes of NVRAM.
A superboot is required for a change in the RAM size jumper to
become effective.
Pulse Input A14 (SW1)
SW1 is a six-position DIP switch that allows the user to configure the
desired electrical interface (Figure 3.6). Resource A14 uses terminals
49-50. If these terminals are not on the main board, the frequency
pulse input option is not installed. See Frequency Pulse Input DIP
Switch Summary, page 44, for DIP switch settings and wiring
diagrams for various electrical interfaces.
Analog Output Mode (CN3)
CN3 is for an optional single 4-20 mA analog output (Figure 3.6). The
output is wired to terminals 39 and 40. If these terminals are not present
on the main circuit board, the 4-20 mA analog output option is not
installed. When the Scanner is turned off (and there is still power to the
loop) and the jumper is in upper (Zero) position, the output will go to
approximately 1 mA. With the jumper in the lower (Last) position, the
output will be held in the last known position.
FPGA Load Jumper (CN4)
Jumper CN4 enables programming of the FLASH memory “boot”
block (Figure 3.6). This block contains 4 Kbytes of code used to
download the flow computer’s application, as well as 4 Kbytes of
memory used to define the operation of the FPGA (during application
downloading). The CN4 jumper is set when the Scanner is
initialized at the factory and should not be changed.
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Chapter 3: Main Circuit Board Wiring
Field Wiring Termination
Table 3.2—Terminals on the Main Board
Terminal #
Description
1
Earth ground
Charging Power
2
Power+
3
Power 4
Batt+, Battery or DC power supply +
Battery
Connections
5
Batt-, Battery or DC power supply,
return or 6
5V Rad, 5 VDC @ 200 mA supply,
turned off by radio power save
Radio Power
7
BattRad, Battery voltage, turned off
by radio power save
8
RadCom, Signal Common or return
for radio power
9
Tx – RS-232C transmit output
10
Rx – RS-232C receive input
11
RTS – RS-232C request to send
(RTS) output
A02 Serial Port
12
CTS – Auxiliary serial port clear to
send (CTS) input
13
DGnd – Digital ground
14
RS-485+
15
RS-485A03 Status I/O
16
SIO – Status input/output
A04 Status I/O
17
SIO – Status input/output
18
DGnd – Signal common
A05 Status I/O
19
SIO – Status input/output
A06 Status I/O
20
SIO – Status input/output
21
DGnd – Signal common
22
VTx1 – Power for transmitters
A07 Pulse Input
23
Pin+, Pulse input positive
24
Pin-, Pulse input negative
25
VTx2 – Power for transmitters
A09 Analog Input
26
AnIn – Analog input
27
AGnd – Analog ground
28
VTx2 – Power for transmitters
29
A15, A16, A17
RTD+/ Anin – RTD+ for A15, or
RTD/Analog Input
Analog input A16, firmware select
30
RTD-/ Anin – RTD- for A15, or Analog
input A17, firmware select
31
AGnd – Analog ground
32
VTx2 – Power for transmitters
A10 Analog Input
33
AnIn – Analog input
34
AGnd – Analog ground
35
VTx2 – Power for transmitters
Source
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Scanner 1141 Hardware User Manual
Table 3.2—Terminals on the Main Board
Source
Terminal #
Description
36
A18, A19, A20
RTD+/ AnIn, RTD+/- are one
RTD/Analog Input
temperature input or 2 analog inputs
37
RTD-/ AnIn, RTD+/- are one
temperature input or 2 analog inputs
38
AGnd – Analog ground
A11 Analog Output
39
AnOut+, Analog output +
40
AnOut-, Analog output A21 Serial Port
41
Tx – RS-232C transmit output
42
Rx – RS-232C receive input
43
RTS – RS-232C request to send
(RTS) output
44
CTS – Auxiliary serial port clear to
send (CTS) input
45
DGnd – Digital ground
46
RS-485+
47
RS-485A14 Pulse Input
48
VTx1, power for transmitters
49
Pin+, Pulse input positive
50
Pin-, Pulse input negative
Table 3.3—Inputs Requiring Connectors
Source
A01 Serial Port
A08 RTD
Location
4-pin Molex connector, adjacent to terminals 12 - 15
RTD as part of serial MVT/RTD (A22 MVT), terminals are on the round interconnect
board located near the MVT
A12 (A22 MVT)
A13 (A22 MVT)
MVT-DP, connected by a 20-conductor ribbon cable
MVT-SP, connected by a 20-conductor ribbon cable
38
Chapter 3: Main Circuit Board Wiring
Wiring Diagram Summary
Figure 3.7—Main circuit board wiring summary
39
Scanner 1141 Hardware User Manual
MVT/RTD Input
The serial MVT is connected to the Scanner 1141 via an interconnect board that also provides an
RTD input.
Resource A22 MVT Serial TTL port (connector CN28) on the Scanner 1141 main board connects to
the round interconnect/SI assembly with a keyed 20-conductor ribbon cable. The SI board and
interconnect board are joined via a connector and a ribbon cable, as shown in Figure 3.8. The MVT
connects to the round SI board in back of the interconnect board.
Figure 3.8—Serial MVT connections
Figure 3.9— MVT-to-interconnect board connections
40
Chapter 3: Main Circuit Board Wiring
RTD Inputs
MVT RTD
RTD input A08 is present on Scanner 1141s that have a direct-mount MVT sensor. The MVT comes
with an interconnect board that accepts two-wire, three-wire and four-wire 100-ohm RTDs. When
two- or three-wire RTDs are used, jumper wires must be installed (Figure 3.10). The RTD wiring is
connected to terminal block TB2 on the interconnect board.
Figure 3.10— RTD connections via MVT interconnect board
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Scanner 1141 Hardware User Manual
Main Circuit Board RTD
WARNING
WARNING – EXPLOSION HAZARD
WHEN A 4-WIRE RTD IS INSTALLED ON THE MAINBOARD, CUT OFF ONE OF THE RTD
LEADS (TYPICALLY ONE OF THE RED LEADS) AND APPLY HEAT SHRINK TO THE END
OF THE CUT WIRE TO PREVENT CONTACT WITH ANYTHING THAT COULD CAUSE A
SPARK.
Resources A15 and A18 connect to a 100-ohm, 3-wire platinum RTD. The RTD characteristic curve
is software-selectable for temperature coefficients of. 0.00385 (Ω/Ω/°C) DIN or by performing a loop
calibration at a single point or three or more points. For more information, refer to the ScanWin
manual, Chapter 3 – Calibrate/Verify Devices.
Platinum 2-wire RTDs can be used by jumping the lead-line compensation terminals together.
Figure 3.11—Wiring diagram for platinum 3-wire RTDs
Analog Inputs
Each main circuit board RTD can be configured as two analog inputs using ScanWin Scanner Setup
wizard and using the selection box for Analog In / RTD Select. See Figure 3.12 below.
RTD Resource A15 can be configured as Analog input resource A16 and A17.
RTD Resource A18 can be configured as Analog input resource A19 and A20.
42
Chapter 3: Main Circuit Board Wiring
Figure 3.12—ScanWin Scanner Setup dialog
Analog 1-5 VDC Transmitter
(Non-incendive)
The use of conventional 1-5 VDC transmitters requires no load resistors (Figure 3.13). Power for the
circuit is normally obtained from the Scanner’s internal power supply, but may also be drawn from an
external source. The configuration is non-incendive when used with an approved transmitter. Refer to
Appendix B: Control Drawings for a list of approved transmitters.
1-5 VDC
Out
VTx
+
Anin
AGnd
Figure 3.13—Wiring diagram for 1-5 VDC transmitter
43
Scanner 1141 Hardware User Manual
Analog 4-20 mA Transmitter
Use of conventional 4-20 mA transmitters requires the addition of precision 250-ohm load resistors
on each analog channel (Figure 3.14). Power for the current loop is normally drawn from an external
source.
4-20 mA
Anin
+
Common
Figure 3.14—Wiring diagram for 4-20 mA analog transmitter
In some configurations, sockets on the main board can be used to install the precision resistors.
Sockets are not installed in all configurations.
Resource
A09
A16
A17
A10
A19
A20
Table 3.4—Socket Identification
Socket
CN15
CN14
CN13
CN12
CN10
CN9
Frequency Pulse Inputs
The Scanner 1141 frequency pulse inputs interface with a variety of pulse-producing sources including
turbine magnetic pickups, preamplified turbine signals, as well as open collector and contact closures
with a debounce filter. Each of these input types are discussed on the following pages.
Frequency Pulse Input DIP Switch Summary
A six-position DIP switch at the left edge of the main circuit board allows the user to configure the
desired electrical interface.
Resource A07 uses terminals 23-24 and DIP switch 5 (SW5). Resource A14 uses terminals 49-50 and
DIP switch 1 (SW1). If these terminals are not on the main board, the frequency pulse input option is
not installed.
Table 3.5 summarizes the function of each switch on the Frequency Pulse Input switch (SW1 and
SW5):
44
Chapter 3: Main Circuit Board Wiring
Position
#
1
2
3
4
5
6
Table 3.5—DIP Switch Functions for Frequency Pulse Input SW1 and SW5
Closed (ON)
Amplified and
Magnetic
Contact
Pickup Coil
Closure
Connects Pin- to circuit ground.
Open (Off)
Closed (On)
Open (Off)
For open collector and dry contact inputs, connects
Closed (On)
Pin+ to a 5V pull-up resistor and input divider; can
also be closed for amplified signals.
Open (Off)
Connects the high-level signal from Pin+ to the
Closed (On)
comparator circuit that squares up the waveform.
Open (Off)
For turbine meter magnetic pickup coil signals,
Closed (On)
connects the Pin+ terminal to an amplifier.
Open (Off)
For turbine meter magnetic pickup coil signals,
Closed (On)
connects the output of the flow computer’s pulse
preamplifier to signal comparator for low-level
signals.
Open (Off)
Debouncing - input sampling at 32 Hz allows
Closed (On) –
detection of signals up to 16 Hz (higher frequency
for dry contact
pulses generated by contact bounce will be
inputs
rejected).
45
Scanner 1141 Hardware User Manual
Three-Wire Preamplified Turbine (Barton 818) 0-5V Input
This is suitable for use with the Barton 818A preamplifier configured for voltage output mode. This
preamplifier provides a transmission of up to 30 mA.
Figure 3.15—DIP switch settings and wiring diagram for 818A preamplifier output
46
Chapter 3: Main Circuit Board Wiring
NOTE: If the preamplifier can be
powered by 12v at less than
30mA, the Scanner 1141's VTX2
transmitter supply may be used
to power the preamplifier. VTX1
can be used if the preamplier
input can be the higher of the
power input and the battery
voltage.
Figure 3.16—DIP switch settings and wiring diagram for pre-amplified turbine 0-5V output
47
Scanner 1141 Hardware User Manual
Open Collector without “Bounce”
This mode provides a generic pulse input
that is compatible with a variety of pulseproducing devices and other end devices. A
suitable end device is one that provides a
bounce-free solid-state output stage, such as
an open collector transistor or open-drain
MOSFET.
Figure 3.17—DIP switch settings and wiring diagram
for an open collector output (without bounce)
Dry Contact with “Bounce”
In this mode, the pulse input is connected to
any device that provides a passive contact
closure, such as a reed relay or microswitch.
Excitation is provided by the Scanner 1141.
Debouncing circuitry limits the input
frequency to 15 Hz maximum.
Figure 3.18—DIP switch settings and wiring diagram
for a dry contact output (without bounce)
48
Chapter 3: Main Circuit Board Wiring
Magnetic Pickup Coil
(Non-incendive)
In this mode, the pulse input is directly
connected to a standard variable-reluctance
pickup coil. It is used on NuFlo gas and
liquid turbine meters and other meters of
similar design. The input uses a difference
amplifier that provides common mode
rejection, allowing the Scanner to operate
with accuracy in noisy environments.
Shielded cable such as Belden 9322 is
required.
Figure 3.19—DIP switch settings and wiring diagram
for a magnetic pickup coil output
Status Inputs and Outputs
Status input resources A03, A04, A05 and A06 are used to read the state of an external device, which can
be either passive (e.g. contact closures) or active where excitation is provided by an external source.
•
When a passive input is selected, an internal power source attempts to drive a 50-mA current through
the circuit. The voltage through this circuit is limited to 3.2 VDC.
•
When an active input is selected, the user can select a voltage threshold of 2, 7 or 10 volts. Below the
threshold, the input will be false (off); above the threshold, the input will be true (on).
Outputs are used for status (e.g. alarms) or pulse train (e.g. accumulated volume) and are selected via
ScanWin software. The circuits are suitable for a variety of end devices including small inductive loads
such as electromechanical counters. The output circuits have limited protection against inductive
“kickback” from such devices, but additional safety can be achieved by strapping a diode across the load.
Current requirements in excess of 100 mA require the use of interposing relays. Excitation should be
drawn from an external source.
Resources A03 through A06 are capable of both status inputs and outputs (Figure 3.20).
49
Scanner 1141 Hardware User Manual
Figure 3.20—Wiring diagram for status inputs/outputs
Analog 4-20 mA Output (Optional)
An optional single 4-20 mA analog output is available (Figure 3.21). To determine if the analog output is
installed, inspect the board for terminals 39 and 40. If they are not present, the option is not installed.
Figure 3.21—Wiring diagram for analog 4-20 mA output
If the analog 4-20 mA output is not installed, one can be obtained via the addition of an expansion board.
See Appendix D: Input/Output Expansion Board, page 103.
Console Serial Port
The console port is accessed through the 4-pin A01 connector (CN34) located on the underside of the
main board, on the terminal block side. This port is wired to a connector accessed from the bottom of the
enclosure, and is typically used with a console device, such as a PC. As shown in Figure 3.22, the
console serial port connector is protected by a tool-secured cover. By loosening one of two screws, the
operator can pivot the top cover plate to the side for direct access to the connector.
Figure 3.22—Console serial port connector shown with the cover in place at the bottom of the Scanner 1141
enclosure (left) and shown with the cover unlatched (right)
50
Chapter 3: Main Circuit Board Wiring
Auxiliary Serial Ports
The auxiliary serial ports (Resources A02 and A21) can be software-configured to support either RS-485,
RS-232C communications, as shown in the ScanWin screen capture (Figure 3.23). Resources A02 and
A22 also support TTL communications, depending on which hardware options are installed. The
auxiliary RS-485 serial port switches (SW2 and SW6) are located along the left edge of the circuit board
with the other jumpers and switches, opposite the terminal blocks.
Figure 3.23—ScanWin Edit Details for Serial Port
For RS-485 communications, Resource A02 uses SW6 and terminals 14 and 15; resource A21
uses SW2 and terminals 46 and 47. If these terminals are not present, the RS-485 option is not
installed.
For RS-232 communications, Resource A02 uses SW 6 and terminals 9 through 12; resource
A21 uses SW 2 and terminals 41 through 44. If these terminals are not present, the RS-232 option
is not installed.
For TTL communications, Resource A02 uses connector CN33; resource A22 uses connector
CN29. If these connectors are not present, the TTL option is not installed.
These serial ports can be used with a modem, radios, or satellites for remote communication or peripheral
devices such as the NuFlo MVX® or MVX®-II multivariable transmitters, Daniel gas chromatographs
and ultrasonic meters to provide additional inputs via serial ports. (For more information, refer to
ScanWin manual, Chapter 7: About the System).
Either auxiliary serial port can be configured as a second console port for remote console, a network port,
or slave ports for connection to Modbus devices or other peripheral devices. (For more information, refer
to ScanWin manual, Chapter 7: About the System).
51
Scanner 1141 Hardware User Manual
When the Scanner is set to operate in low-power mode (via the ScanWin software System tab), the serial
interface allows the output signals (TX and RTS) to be “powered-down” under software control to reduce
power consumption when the serial port is inactive. The receivers remain active even when the
transmitters are powered down, allowing these inputs to transition from “on” to “off” to “wake-up” the
serial port.
RS-232C Auxiliary Serial Port
When resource A02 or A21 is configured to support RS-232 communications, the following wiring
diagrams can be used to connect to a modem or radio (DCE), or directly to a PC (DTE).
Figure 3.24—Wiring diagram for connecting auxiliary serial port A02 or A21directly to a PC using a DB-9 (DTE)
connector
Figure 3.25—Wiring diagram for connecting auxiliary serial port A02 or A21 to a radio using a DB-9 (DCE)
connector
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Chapter 3: Main Circuit Board Wiring
Figure 3.26—Wiring diagram for connecting auxiliary serial port A02 or A21 to a modem using a DB-25 (DCE)
connector
Terminal
Tx
Rx
RTS
CTS
DGnd
Table 3.6—Terminal Connections for 9-pin and 25-pin RS-232 Cables
RS-232C (9-pin DTE) RS-232C (9-pin DCE) RS-232C (25-pin DCE)
2
3
2
3
2
3
—
8
4
—
7
5
7
9
7
RS-485 Auxiliary Serial Port DIP Switches
Table 3.7—Functions and Settings for RS-485 Auxiliary Serial Ports (SW2 and SW6)
SW/Position
#
SWx-1
Description
ON
OPEN – OFF
Selected
Deselected
AC couple 100-ohm termination
resistor1
SWx-2
Pull-up resistor
Selected
Deselected
SWx-3
Pull-down resistor
Selected
Deselected
SWx-4
Not used
—
—
1
Can be used if Scanner 1141 is the last device on the loop, but not normally required for communications
rates of 19200 bps or less.
Figure 3.27—Auxiliary serial port switch with all RS-485 connections enabled
53
Scanner 1141 Hardware User Manual
TERMINAL BOARD
RS-485
+
DGnd
14
15
16
Shield
POWER
Vtx 2
Gnd
+
-
RTD-
RS-485
SCANNER 1141
A
RTD+
B
I+
I-
TB1
TB2
Figure 3.28—MVX-II wiring diagram for auxiliary serial port configured for RS-485 communications
Up to two MVX-II instruments can be powered from the Vtx2 (12 Vdc) terminals of the 1141.
RS485 +/- terminals for A02 are #14/#15, for A21 are #46/#47.
TTL Auxiliary Serial Port
When resource A02 or A22 is configured to support TTL communications, the following wiring diagram
can be used to connect the Scanner 1141 to a 3V or 5V TTL communication device.
For TTL communications, Resource A02 uses connector CN33; resource A22 uses connector CN29. If
these connectors are not present along the right edge of the mainboard, the TTL option is not installed.
Eight-pin inline connectors and cable are available from Cameron. An 18” long cable with a connector
on each end is part number 0027-9029T.
Figure 3.29—Wiring diagram for connecting auxiliary serial port A02 or A22 directly to a device using a TTL 8-pin
connector
54
Chapter 4: Startup and Configuration
Chapter
4: Startup and Configuration
Startup Procedure
WARNING – EXPLOSION HAZARD
ENSURE THAT THE AREA IS NON-HAZARDOUS BEFORE CONNECTING A PC TO A
SERIAL PORT, OPENING THE ENCLOSURE OR ADDING OR REMOVING ANY WIRES.
WARNING
1. Ensure that the “Backup Batt” jumper (CN20) is positioned across the “ON” or upper pins. See
Backup Batt (CN20), page 33, for details.
2. Ensure that the “RAM Size” Jumper (CN10) is positioned in the desired location. “High” is 96
kbytes, “Low” is 64 kbytes. See RAM Size (CN11), page 36, for details.
3. Ensure that power is connected to terminals 2 (+) and 3 (-) on the main circuit board.
4. If a battery is used, ensure that it is connected to terminals 4 (+) and 5 (-).
5. Turn the power switch (SW9) on.
6. Ensure that the correct firmware version is installed in the Scanner. The firmware version can be
viewed from the ScanWin user interface or by turning on the Power switch (SW9) and watching
the local display until it scrolls to the firmware version. The typical firmware version will be
NFLo or IGas X4.3.4G or higher, where X identifies firmware options such as M for Modubs or
P for ScanPLC. If the firmware needs to be updated, follow the procedure in Appendix D,
Flashing the Scanner.
7. Perform a superboot (see the procedure below) and continue to set up the Scanner using the setup
steps on page 57.
Superbooting the Scanner
After power has been applied to the Scanner for the first time, a superboot is recommended for
initializing the memory.
Note: If the Scanner has been FLASHED with the desired version of firmware or is NOT
CONFIGURED, perform a superboot. If it is already configured, it is not necessary to
perform a superboot. If a previous configuration was saved, the configuration can be restored
after a superboot is performed.
Note: Superbooting ERASES all configuration and history data. SAVE all configuration and history
data before superbooting the Scanner RTU. See the ScanWin manual for instructions on
saving configuration data.
55
Scanner 1141 Hardware User Manual
To perform a superboot, use the following procedure. (Refer to Figure 4.1 for switch locations.)
1. Set the Power switch (SW9) to OFF. The switch is located in the top left corner of the main
board.
2. If the main board contains a Configuration Lock switch, ensure that the switch (SW11) is
UNLOCKED. The position of this switch is not detectable via observation alone, but can be
verified from the System screen of ScanWin. If the Configuration Lock is in an unlocked
position, the CFG Lockout Status field will be marked with an “X”; if it is in a locked position,
the field will be marked with a checkmark. (See Config Lock (SW11), page 31, for more
information on the Configuration Lock switch.)
3. Locate the Super Boot button on the left of the main board.
Figure 4.1—Super Boot button
56
Chapter 4: Startup and Configuration
4. Press and hold the Super Boot button, and without releasing it, move the Power switch (SW9) to
the ON position and continue holding the Super Boot button in for approximately 10 seconds. In
about 1 minute, the super boot process will be completed and the display will show the following
message:
Superboot found
resetting unit
**REMINDER**
be sure to setup
unit for
non-superboot
It is safe to release the SuperBoot button when this message appears.
Note: If the SuperBoot button is released before 10 seconds, the superboot may be incomplete,
and the unit may not function properly.
CAUTION
SUPERBOOTING ERASES ALL CONFIGURATION AND HISTORY DATA. SAVE ALL
CONFIGURATION AND HISTORY DATA BEFORE SUPERBOOTING THE SCANNER RTU.
CAUTION
Setup Steps
1. Start ScanWin and set the time and date at the prompt. (See the ScanWin manual for
instructions.)
2. If it is necessary to add new hardware to the Scanner RTU, perform the following steps:
a. Disconnect or switch off the input power to the Scanner (SW9).
b. Connect the transmitters, RTDs and other end devices.
c. If the end devices include turbine meters or other pulse output meters connected to A07
and A14, ensure that SW5 and SW1 are set to the appropriate mode.
d. When all end devices have been connected, turn on input power to the Scanner (SW9).
57
Scanner 1141 Hardware User Manual
3. Configure the scanner as described in the ScanWin manual (Chapter 2, Overview of the Startup
Procedure).
CAUTION
CAUTION
IT IS RECOMMENDED THAT THE NEW SCANNER CONFIGURATION BE REBUILT IN ITS
ENTIRETY. PROBLEMS MAY RESULT WHEN A CONFIGURATION FILE BUILT IN ONE
FIRMWARE VERSION IS UPLOADED TO ANOTHER SCANNER WITH A DIFFERENT
FIRMWARE VERSION.
4. In applications where the Configuration Lock switch (SW11) is legally required, enable the
switch and seal it (see Config Lock (SW11), page 31).
MVT Calibration
Local installation effects such as instrument positioning, tubing and site elevation require local
calibration of both the differential pressure and the static pressure to obtain custody transfer quality
accuracy. It is recommended that the differential pressure and static pressure be verified upon
installation and recalibrated if required.
For initial installation of the MVT sensor it is possible to perform a local atmospheric zero calibration
of the static pressure. However it is recommended to perform a full static and differential pressure
calibration using a select number of calibration points.
58
Chapter 5: Troubleshooting
Chapter
5: Troubleshooting
This section describes a basic procedure for locating Scanner 1141 Hardware operating problems. It is
not intended to solve all problems for all users, but rather is provided to assist users in the field with the
most commonly encountered problems. If a problem not covered by this guide is encountered, contact
any of the following:
•
In Canada, (877) 805-7226 (Scanner Help Desk) or (403) 291-4814
•
In the US, (800) 654-3760
•
In the UK, 44-1243-826741
Tools Required
As a minimum requirement for troubleshooting and performing minor maintenance on the Scanner 1141,
the following tools should be available to the user:
•
Laptop PC and ScanWin software version 3.0.0 or higher
•
Scanner cable (10-ft cable: CS08-338-01; 50-ft cable: CS08-338-50)
•
Digital multimeter that can measure 0.0-25.0 VDC and 0.0-2,000.0 mA
•
Large slotted screwdriver
•
Instrument-size slotted screwdriver
•
Phillips #2 screwdriver
59
Scanner 1141 Hardware User Manual
Problems and Solutions
Table 5.1—Problems and Solutions
Problem
Possible Solutions
A)
The Scanner is not
operating at all.
1. Press the Display Wakeup button to turn on the display.
2. Plug the console port cable into the local console port, and run ScanWin on your
Laptop to communicate to the Scanner 1141.
3. Check battery voltage on the Scanner 1141’s main battery located in the rear of
the enclosure. The battery voltage must be:
• above 6 VDC for 6-volt systems
• above 11.2 VDC for 12-volt systems
4. If a Class I, Division 2 integral charge controller is used, check the Batt+ and Battterminals (terminals 4 and 5) on the main board and make sure the connections
are secure. A power cable should be connected to the Power +/- terminals
(terminals 2 and 3) on the main board.
5. Perform a restart by setting the Pwr switch SW9 to the OFF position, and then
turning it ON again. Within 1 minute, the Scanner 1141 should display the
message “Power on restart”.
6. If Scanner is still not operating, set the Pwr switch SW9 to the OFF position.
Disconnect the Power+ and Battery+ terminals for 30 seconds, ensuring that the
ends of the disconnected wires do not contact anything. Set Pwr switch SW9 to
the ON position. Within 1 minute, the Scanner 1141 should display the message
“Power on restart”.
Refer to
Transmitter
Voltage, page 64,
for more
information.
B)
The Scanner
display will not
“power up”.
1. Press the Display Wakeup button.
2. Adjust the “Contrast” potentiometer in the upper left part of the mainboard. With a
small slotted screwdriver, rotate the control clockwise to increase the contrast to
the point where all of the display pixels are blackened out. If this works, turn the
contrast back to the desired setting.
3. See problem A: “The Scanner does not seem to be operating at all.”
C)
The Scanner will
not talk to ScanWin.
1. Ensure that the console port cable is plugged into the Scanner 1141, and the
correct COM Port is displayed on your laptop.
2. Check communications settings to ensure that they match those of the Scanner
1141. If you are unsure of the Scanner’s settings, turn the Pwr switch SW9 off and
then on again. When the Scanner 1141 boots up, the display will reveal the
firmware version (e.g. NFlo M4.3.3G) followed by the local console port settings
(e.g. 9600, 8, N, 1). In the example given, assuming the console port cable is
plugged into COM Port 1 of the PC, the default values for communication are as
follows:
ScanWin is used for version 4 firmware (e.g. NFlo M4.3.3G). Local console
communication settings are found in the main menu Tools>Communication setup.
Family and Scanner name are _DIRECT_, with default settings as follows:
•
•
•
•
60
Port group is DIRECT.
Baud rate is 9600.
Stop bits is 1.
Parity is none.
Chapter 5: Troubleshooting
Table 5.1—Problems and Solutions
Problem
C)
The Scanner will
not talk to ScanWin
(cont’d).
D)
The Scanner battery
does not hold a
charge.
For instructions on
replacing the battery,
see Page 66.
Possible Solutions
Ports Tab default settings are:
•
•
•
Port is COM1.
Status is enabled.
Port Group Name and Device setup name are DIRECT.
3. Check to ensure that the cable inside the Scanner 1141 enclosure that connects
the local console connector to the CN34 A01 connector on the main board is
properly connected at both ends.
1. Check the charging voltage coming into the 1141. Power should be connected to
the Power +/- terminals (terminals 2 and 3) on the 1141 main board. Also, check
the power cable that runs from the power supply board to the CN35 connection
labeled “Power” along the top right edge of the Scanner 1141 main board. This
cable terminates with a 6-pin connector on the main board, as shown in Figure
2.13.
If a 12-volt solar panel is being used, it should be 13-18 VDC. If a 24-VDC and
I.S. barrier combination is being used, it should be 16-20 VDC. If a 12-VDC and
I.S. barrier combination is being used, it should be 7-9 VDC.
2. Check for a blown fuse in the factory-installed wire connecting the positive battery
terminal to the mainboard. The 10-amp inline ceramic fast-blow fuse is ¼ x 1 ¼-in.
ABC-10.
3. Although the voltage seems sufficient, there may not be enough current to sustain
the Scanner’s operation over a long period of time. If this is suspected, remove
one of the input power leads coming from the charging device (e.g. solar panel).
Using a current meter, measure the amount of current being supplied to the
Scanner 1141 battery. A fully charged Scanner 1141 will only draw 10 to 20 mA. A
low battery will draw as much as the solar panel will produce, up to 10 amps on
the charger integral to the mainboard.
Typical Solar Panel Max Current
•
•
•
5 watt- 290 mA (0.29 A)
10 watt- 580 mA (0.58 A)
30 watt- 1,750 mA (1.75 A)
4. The Scanner 1141 battery may have been damaged due to a series of excessively
deep discharge cycles (e.g. less than 5 VDC for the 6-volt system). This might be
symptomatic of a large number of low battery alarms on the Scanner 1141 only at
night when there is no sun, despite the fact that the system has seen a consistent
amount of sunshine during the daylight hours. Some of the battery’s capacity may
be restored by fully charging the battery and then discharging it to 5.5 VDC
repeatedly in the shop. If not, the battery should be replaced.
61
Scanner 1141 Hardware User Manual
Table 5.1—Problems and Solutions
Problem
Possible Solutions
E)
The Network Port is
not functioning.
1. Check to ensure that the network has been enabled and the network port
communications settings are correct for your application. ScanWin network port
settings are found on the System > Network tab. Status of network should be a
green check mark to indicate the network is enabled. The Scanner EFM/RTU
serial port settings can be viewed by clicking on the serial port Details button.
While on the network screen, also check to ensure that the network port has not
locked up. Typically, the “Network connected=” field will say “no” unless the host
system is polling it at that instant. Seldom will the network remain active for more
than a minute or two at a time. If “Network connected=yes” is displayed for a
longer period, disable the network and re-enable it.
2. Check that the network port has been wired properly for your application. In the
example above, resource A02 (RS-232) would require, at a minimum, transmit on
terminal 9, receive on terminal 10, and ground on any of the commons (e.g.
terminal 13 or 21). The other serial connections will depend on your specific
application. Refer to the Scanner Support Group for further assistance.
3. Check that the serial port is operational by performing a loopback test. Refer to
ScanWin System>Network or Hardware tabs in ScanWin for more information.
4. Normally, the serial port will be powered down so that there is no voltage between
transmit and ground or receive and ground. After it has been “awakened,” the
receive line (terminal 10) should be at -8 VDC with reference to ground except
when data is being received, when it should toggle up and down briefly between
+8V and -8V. If this is not the case, a hardware problem may exist.
F)
The MVT cell is not
providing process
signals to the flow
run.
1. Check to ensure that the MVT hardware resource has been allocated to the flow
run. With ScanWin, check the Flowrun > Live Inputs tab.
2. Check to see if the zero and full-scale values for the MVT have been read into the
Scanner 1141 correctly. With ScanWin, check the Hardware tab. If the zero and
full-scale values are reading “Invalid”, perform a software reset and return to the
same display. Check the cables that connect the MVT to the SI interconnect board
and the cables that connect the SI interconnect board to the Scanner. If the zero
and full scale values still read “Invalid”, power down the Scanner 1141 and replace
the MVT cell.
Transmitter Voltage
When the Power switch (SW9) is in the “down” position, the Scanner is off and the entire system is shut
down. A time delay (~10 ms) is provided to allow the system to execute its power fail code before power
is lost and the system is reset.
Switch settings must be correct and transmitter voltage must be correct for the type of transmitter being
used. Check “Vtx” on the main circuit board terminals (refer to Analog Inputs, page 42), For inputs that
can be configured as RTD or analog inputs check the ScanWin System tab to confirm that the input is
configured as desired. To change the input configuration go to ScanWin Setup > System Setup.
62
Chapter 5: Troubleshooting
Test Voltages
See Tables 5.2 and 5.3 for voltage supplies generated in the Battery Charge Controller Circuit Board, and
see Figure 5.1 for transmitter test points on the main circuit board. Voltage should be measured between
the ground connector (“Gnd”) and the following test pins.
WARNING – TO PREVENT DAMAGE TO THE CIRCUIT BOARD, DO NOT SHORT PINS
TOGETHER.
WARNING
Table 5.2 –Voltage Generated by Power Supplies
Supply
Voltage
Description
Vcc
5V ± 5%
Powers computer & interface circuitry.
VPP
0V
VPR *
5V ± 5%
VMSP
3.3V ± 3%
3.3V supply for the MSP430, even with power off
VCC5.5
5.5V ± 10%
Analog supply for A/D system, if Analog and/or RTD inputs are present
VBB
5V ± 5%
VCC3
3.3V ± 3%
VLCD
5V ± 5%
Flash memory programming supply, 5V when flashing RTU
Output of switching regulator powers computer and supplies 3.3V regulators
Powers NVRAM and real time clock, ~3V when not powered
Powers 3.3 volt circuits including MVTs
Power for LCD display, only when display is on.
* Class I, Div. 2 with integral 6V or 12V battery charge controller
Table 5.3 –Voltage Generated by Control Signals
Signal
Voltage
IBKL*
0.95 to 2 V
Description
Constant current control when the LCD backlight is on. 5V when backlight off
PFIBAT
> 1.23V
Power Fail detector for 6V battery systems, shuts down RTU when PFIBAT and
PFIPWR are less than 1.23V.
RESETN
5V CMOS
System active low reset signal.
32KHZ
0-5V CMOS
square wave
PFIPWR*
> 1.23V
MSPRST
3.3V CMOS
32.768 KHz real-time clock oscillator output
Power Fail detector for 12V battery system, shuts down RTU when PFIPWR is
less than 1.23V (i.e. when Power+ and Battery+ are below ~9V).
MSP430 active low reset signal.
* Class I, Div. 2 with integral 6V or 12V battery charge controller
63
Scanner 1141 Hardware User Manual
Figure 5.1—Transmitter test points on the 1141 main board
NVRAM Lithium Battery Voltage
The NVRAM lithium battery must register above 2.0 VDC when using ScanWin version 3.0.0 and
higher with firmware version 4.3.5 and above. When measuring the NVRAM battery voltage with a
voltmeter (this measurement can be performed with the battery in the holder while the Scanner is
operating), the voltage will be 0.3 to 0.7 volts higher than when it is measured by the firmware. The
value read by the Scanner firmware is the actual (backup) voltage applied to the NVRAM and PIC (for
operation as an RTC) and includes the voltage drops from the Schottky diodes that are part of the nonincendive circuit.
Note that with lithium batteries, the voltage drops off dramatically so there is never much of a “low
voltage” warning. A NVRAM battery voltage above 2.0 VDC indicates the configuration is still backed
up; a voltage of zero means that the battery is dead, not installed, or the jumper is missing.
NVRAM Battery Change Procedure
The following steps outline the procedure for changing the NVRAM / lithium backup battery in the
Scanner 1141. The battery will last between 7 and 10 years under normal usage.
1. Use ScanWin to download all configuration, calibration and historical data from the Scanner
RTU.
2. Turn off the Scanner 1141 RTU by moving the Power switch (SW9) to the “down” or OFF
position.
3. Disconnect the power supply to the Scanner 1141.
4. Lift the clip that holds the lithium backup button cell battery in the upper left-hand corner of the
board and remove the battery. Replace it with a 3.6V lithium button cell battery, noting the
correct polarity.
5. After ensuring that all connections have been made, restore power to the unit following the
startup procedure on page 55.
6. Restore the configuration to the unit with ScanWin.
64
Chapter 5: Troubleshooting
7. Check the voltage of the new lithium battery in ScanWin. Select the System tab at the top of the
screen; then select the Node Information tab at the right side of the screen. Look for “NVRAM
backup battery voltage.” The value displayed should be close to 3.6 volts.
Returning the Scanner to the Manufacturer
If the Scanner 1141 RTU must be returned to Cameron’s Measurement Systems Division, ship it as a
complete unit, but remove the sealed lead acid battery from the Scanner enclosure. There is usually no
need to return the battery.
If it is not possible to return the complete unit, return the main circuit board. The main circuit board is
removed by undoing the six screws or standoffs that connect it to the base plate. NOTE: Circuit boards
should be shipped in antistatic bags, and a well-protected package.
Replacing the Sealed Lead Acid Battery
A label mounted inside the enclosure lists batteries certified for use with the Scanner 1141 (Figure 5.3).
An operator can determine which batteries are suitable for his Scanner 1141 by identifying batteries with
the proper voltage and temperature range, or by examining the order code in the Code field of the data
plate attached to the Scanner 1141. The order code for the battery is the first two-digit number following
the Scanner 1141 model. For example: if the code listed on the data plate is 1141L-XX-YY-YY… ,
“XX” is the battery order code required for replacement.
Figure 5.3—Battery label
65
Scanner 1141 Hardware User Manual
66
Chapter 6: Parts List and Order Code
Chapter
6: Parts List and Order Code
Scanner 1141C
67
Scanner 1141 Hardware User Manual
Scanner 1141L
68
Chapter 6: Parts List and Order Code
Scanner 1141G
69
Scanner 1141 Hardware User Manual
Table 6.1—Parts List - Scanner 1141C, 1141L & 1141G
Item
Description
Part Number
Quantity per Unit
1141C
1
1a
2
3
4
5
6
1141L
1141G
Enclosure Assembly with window
1141C
1141-1001B
1141L
1141-1002B
1
1
Lens, Screened - 2 X 16W ( included in item 1)
1141C
1141-1017C-01
1141L
1141-1017C-03
Nut, Machine Screw 5/16-18
CS
0500-0033J
SS
CS01-442-404
Lockwasher, 5/16-18
CS
0003-0006K
SS
0003-0083K
U-bolt, 5/16"-18, Bracket, Mounting
CS
0440-0001J
SS
CS01-442-402
Bracket, Mounting, Upper Pole
1
1
4
4
4
4
2
2
1
CS C1008
1141-1010C-01
SS 316
1141-1010C-03
Screw
2
Hex Hd 10-32 X 5/8 ST CP
0116-0005J
SS brackets use, Slot 10-32 X 5/8 SS
0119-0038J
7
Washer, Flat, #10, SS
0003-0047K
2
8
Hole Seal 3/4"
0192-1029T
1
9a
Dataplate, Scanner CSA, Div.2
1141-1012G-01
1
1
1
9b
Label, Wiring Connections, 1141
1141-1007G
1
1
1
9c
Label, Battery, 1141
1141-1018G
1
1
9d
Label, Warning Sign
1141-1019G
1
1
10
Terminal Crimp, Ring Tongue 1/4 (14-16Awg)
0109-9015T
1
1
11
Stud, 1/4-20 X 1-1/2 SS
0007-9007T
1
1
12
Washer, Seal, 1/4", CS, Bonded Neoprene
0003-9008K
1
1
13
Lockwasher, Internal Tooth - 1/4", SS
0003-1110K
4
4
14
Nut, Machine Screw 1/4-20 18-8 SS
0500-0046J
4
4
As
required
As
required
As
require
d
1
15
Wire, 14 AWG - Green
0012-9002T-11
16
Terminal Crimp, Ring Tongue #8 (14-16Awg)
0109-9014T
5
5
17
Strain Relief, 1/2" NPT
0091-9000T
3
3
18
Lockwasher & Gasket, NEMA 4 - 1/2"NPT
1140-1028J
2
2
70
Chapter 6: Parts List and Order Code
Table 6.1—Parts List - Scanner 1141C, 1141L & 1141G
Item
19
Description
Part Number
Screw, Hex Cap Hd 1/4-28
CS
0210-9011J
SS
99002004
Quantity per Unit
1141C
1141L
4
4
20
Lockwasher, Split - 1/4" , CS CP
0003-0013K
4
4
21
Gasket, MVT Mounting Flange
90023001
2
1
22
Bracket, Mounting, Lower Pole
23
1
CS C1008
1141-1011C-01
SS 316
1141-1011C-03
Flange
MVT Mounting, Aluminum
30174001
MVT Mounting, SS
Mounting, 1/2" NPT,
101295880
Aluminum
1141G
1
1
2
2
1
1
1141-1014-01
Mounting, 1/2" NPT, 316
SS
1141-1014-03
24
Screw, Hex Soc Set, 8-32 X 3/8 SS
0320-1007J
25*
RTD Probe/Armored Sheath, 4 Wire
10 Foot
1100-1010C-10
30 Foot
1100-1010C-30
26
Stand-off, FXF 10-32 X 3/4", AL
30*
Connector, Console Port
0152-9015T
4
1141C
1140-1054B
1141L
0109-1310T
1
30a
Gasket, Console Port Connector, Silicone
1140-1031R
1
1
30b
30c
Base, Console Port Connector
1100-1011C
1
1
Cap, Sealing, Console Port Connector
0090-9001T
1
1
30d
Gasket, Console Port Connector
1100-1013R
1
1
30e
Cover, Console Port Connector
1100-1012C
1
1
30f
Washer
2
2
30g
Screw
2
2
31
32*
Hole Seal 3/4"
0192-1029T
1
1
Cable, Connector, Std
1140-1053B-11
1
33
Duct, Wiring - 1"W X 1"H X 6'L PVC LG
0027-9003T
34
Cover, Duct, Plastic Wiring, Grey 1"
0027-9009T
1
As
required
As
required
35
Mounting Plate
1141C
1141-1003C
1
1141L
1141-1004C
1
0.5
1
71
Scanner 1141 Hardware User Manual
Table 6.1—Parts List - Scanner 1141C, 1141L & 1141G
Item
Description
Part Number
Quantity per Unit
1141C
1141L
36
Screw, Pan Phill HD 10-32 X 3/8 SS
0111-0057J
4
4
37a
Insulating Marker Strip, 3 Double Terminal
3900-7100T
1
1
37b
Terminal Block, 3 Double Terminal - Phen
3900-7000T
1
1
38a
Terminal, Flanged Spade - Size 6 Blue
0062-9007T
38b
Wire, Stranded 14 AWG - Black
0012-9002V-03
38c
Wire, Stranded 14 AWG - red
0012-9002V-09
2
As
required
As
required
2
As
required
As
required
38d
Wire Tip Ferrule, Blue H2.5/14
1130-4666T
2
2
39
Lockwasher, External Tooth - #8, SS
0003-9004K
3
3
40
Lockwasher, Internal Tooth - #8, SS
0003-0066K
10
8
41
Nut, Machine Screw 8-32 18-8 SS
0500-0047J
4
2
42
Screw, Pan Ph Hd, 8-32 X 3/4 18-8 SS
0119-9002J
2
1
43
Stand - off, M X F 6-32 X 1-1/2" - Aluminum
0152-9004T
2
2
44*
SI Cable, Flat, Assy, Ribbon 20 Cond, 26"
1141-1009C
1
1
45*
SI Board ( included with MVT)
99160000A
1
1
46*
SI Interconnect Board
30160002A
1
1
47
Lockwasher, Internal Tooth - #6, SS
0003-0070K
2
2
48
Screw, Ph,Pn Hd, 6-32 X 1/4, SS
0119-1013J
2
2
49
Wire Tip Ferrule, Blue H2.5/14
1130-4666T
4
4
50
Terminal, Ring-type - Size 16 Blue
0109-9006T
2
2
51*
Battery
1141G
2
1
1
32 Ah
55 Ah
0130-9022T
1
0130-9024T
52a*
Fuse, 10A Fast Blow 1/4" X 1-1/4" Ceramic
0111-9019T
1
1
52b*
Fuse Holder , 18" Red Wire 14 AWG
0111-9020T
1
1
1
1
53
Label fuse 10 Amp
54
Grommet Round Bushing, Dia.1.375"
99065003
2
2
55
Screw, Bd Ph Hd 8-32 X 3/8 18-8 SS
0119-9001J
6
6
56
Bracket, Mounting, Battery Stand
1141-1005C
1
1
57
Velcro Strap, 100 cm Length
0022-9001T-10
1
1
60
Screw, Ph,Pn Hd, 6-32 X 1/4, SS
0119-1013J
6
6
14
61
Lockwasher, Internal Tooth - #6, SS
0003-0070K
12
12
14
62*
Board, EXP.
1
1
1
MIO2, MVT SERIAL PORT ONLY
1141-0210B-10
MIO2, MVT , P/I, A/O, 2 DIO
1141-0210B-26
63
Standoff, , MXF, 6-32 X 7/16"
0152-9018T
4
4
4
64*
Battery, Lithium coin, 3V, CR2032
0130-9029T
1
1
1
72
Chapter 6: Parts List and Order Code
Table 6.1—Parts List - Scanner 1141C, 1141L & 1141G
Item
65*
Description
Part Number
Mainboard
1141 Module - Full Load
1141-0301B
1141 Module - Medium Load
1141-0304B
1141 Module - Base Load
1141-0302B
Quantity per Unit
1141C
1141L
1141G
1
1
1
66
Stand - off, M X F 6-32 X 3/8" - Aluminum
0152-9007T
6
6
67
Screw, Bd Ph Hd 8-32 X 3/8 18-8 SS
0119-9001J
4
5
68
Lockwasher, Internal Tooth - #8, SS
0003-0066K
4
4
69
Nut, Machine Screw 6-32 SST
0500-0021J
6
6
70
Screw, Ph Bd Hd 8-32 X 1/4 - Green Head
0119-9004J
1
1
1
71
Stand-off, FXF, 8-32 X 3/4" (3/8"HEX-AL)
0152-9002T
1
1
72
Stand-off, Snap X Post X 5/16", Plastic
1141-1016T
3
3
3
73
Mounting Plate, Mainboard, 2X16 Display
1141-1000C
1
1
1
74
Stand - off, Snap X Snap X 2mm, Plastic
1141-1015T
4
4
75*
Display
1
1
LCD 2 X 16
1141-0400C
Backlit LCD 2 X 16
1141-0401C
1
1
76
Stand-off, MXF 6-32 X 1/4" - Al
0152-0036T
4
77
Decal, Scanner 1141
1141-1006C
1
80
Mounting Plate, Top, 1141G, 2 X 16 Display
1141-1008C
1
81
DB9, Female solder Body
CS08-338-113
1
82
Stand-off, M X F 4-40 X3/16 Lg, Al Kit
CS08-607-114
2
83
Stand-off, MXF 6-32 X 1/2" - Al
0152-1111T
4
84
Stand-off, MXF 6-32 X 1" - Al
0152-9020T
2
85*
Cable Assy, Ribbon 16 Cond. 6" Lg
0027-9027T-1606
1
86
Stand-off, FXF 6-32 X 3/8" AL
0152-1100T
6
none
Power supply, 24 vdc @1 Amp, CSA Div2,
1000-1062T
none
Cable, 8 pin 1141 TTL, 18” long
0027-9029T
100*
Multivariable Transducer (MVT) Standard
MVT,100PSIA,30IN H20
55168006
MVT,300PSIA,200IN H20
55168001
MVT,300PSIA,840IN H20
55168003
MVT,500PSIA,200IN H20
55168007
MVT,1500PSIA,200IN H20
55168002
1
1
1
73
Scanner 1141 Hardware User Manual
Table 6.1—Parts List - Scanner 1141C, 1141L & 1141G
Item
Description
Part Number
Quantity per Unit
1141C
MVT,1500PSIA,300IN H20
55168005
MVT,1500PSIA,400IN H20
55168008
MVT,1500PSIA,840IN H20
55168004
MVT,3000PSIA,200IN H20
55168045
MVT,3000PSIA,300IN H20
55168046
MVT,3000PSIA,400IN H20
55168047
MVT,3000PSIA,840IN H20
55168048
MVT,5300PSIA,200IN H20
55168049
MVT,5300PSIA,300IN H20
55168050
MVT,5300PSIA,400IN H20
55168051
MVT,5300PSIA,840IN H20
55168052
Multivariable Transducer (MVT) NACE
MVT,100PSIA,30IN,H20,NACE
55168016
MVT,300PSIA,200IN,H20,NACE
55168011
MVT,300PSIA,840IN,H20,NACE
55168013
MVT,500PSIA,200IN,H20,NACE
55168017
MVT,1500PSIA,200IN,H20,NACE
55168012
MVT,1500PSIA,300IN,H20,NACE
55168015
MVT,1500PSIA,400IN,H20,NACE
55168018
MVT,1500PSIA,840IN,H20,NACE
55168014
MVT,3000PSIA,200IN,H20,NACE
55168077
MVT,3000PSIA,300IN,H20,NACE
55168078
MVT,3000PSIA,400IN,H20,NACE
55168079
MVT,3000PSIA,840IN,H20,NACE
55168080
MVT,5300PSIA,200IN,H20,NACE
55168081
MVT,5300PSIA,300IN,H20,NACE
55168082
MVT,5300PSIA,400IN,H20,NACE
55168083
MVT,5300PSIA,840IN,H20,NACE
55168084
Multivariable Transducer (MVT) SS BOLTING
MVT,300PSIA,200IN,H20,SS BOLTING
55168035
MVT,1500PSIA,200IN,H2,SS BOLTING
55168036
* Indicate recommended spare parts
74
1141L
1141G
Chapter 6: Parts List and Order Code
1141 SCANNER MEASUREMENT RTU
Section:
Flow Computers
Page:
1 of 2
Effective:
24-Apr-06
BASE UNIT:
Communication Connection: External Console Port
Communication Connection: External Console Port
Communication Connection: DB9
1141C [With Communications] NEMA 4 FRP
1141L NEMA 3R Steel Enclosure
1141G [OEM] Surface Mount Chassis
Shaded selections indicate stocked items
1
1141 Code Example: 1141C
POWER SUPPLY / BATTERY
No Battery (only selection for 1141G) (60 C assembly)
Division 2; 6 / 12 vdc charge controller, Integral to mainboard, (1141C & 1141L)
Battery ready (Battery not included)
12 vdc - 29 to 33 Ah battery (60C assembly)
12 vdc - 32 Ah battery
12 vdc - 50 Ah battery (1141C only) (60C assembly)
12 vdc - 55 Ah battery (1141C only)
6 vdc - 12 Ah battery
6 vdc - 33 Ah battery
6 vdc - 58 Ah battery (1141C only)
6 vdc - 58 Ah battery (1141C only) (60 C assembly)
NOTE:
2
30
FL
83
00
2C
IM
R1
00
00
30
29
32
50
55
61
63
65
66
1a. Ambient temperature is -40 to +40C unless otherwise noted
1b. Larger Enclosure/battery available with special acceptance approval.
Watts
None
Bracket
None
Cable
None
Approval
n/a
00
10
20
30
50
80
Adj.
Adj.
Adj.
Vertical
Vertical
10'
10'
10'
10'
None
Div 2
Div 2
Div 2
Div 2
Div 2
10
20
30
50
80
2a. All brackets are for 2" pipe
2b. For non standard solar panels please consult factory
DISPLAY
None [applicable to all models]
2 lines X 16 character LCD Display
2 lines X 16 character, Backlit LCD Display
4
D2
SOLAR PANEL
NOTE:
3
55
00
D2
B2
INPUT OPTIONS (MAIN BOARD)
A02
Serial
Port
Analog
Input
RTD
(Analog)
Input
0
0
0
0
2
1(2)*
1
1
Pulse
Input
Analog
Output
Charge
Controller
Notes
4.X
Transmitter
Supply
2
10 A
1
CL & 12VL
4
10 A
CL & 12VL
4
10 A Dual
Stage
CL & 12V
Stepup
Discrete
I/O
Hazardous Location Division 2
RS232
/TTL
RS232
/TTL
RS232/
485/ TTL
NOTE:
5
2
2(4)*
2
1
1, 2
B1
M1
FL
4.1 Mainboard has a backlit capability.
4.2 Mainboard has configuration lock switch (Measurement Canada).
PROGRAM
IGas (ISO Gas Calcs)
NFlo 4 (Gas/Liquids- Hourly Data)
NOTE:
M-Modbus
59
83
P-PLC
P4
For other available programs, see PROGRAM LIST document 1100-1002B.
ADD
75
C2
Scanner 1141 Hardware User Manual
1141 SCANNER MEASUREMENT RTU
Section:
Flow Computers
Page:
2 of 2
Effective:
6
EXPANSION BOARD
None
MIO2: Multiple Input/Output Expansion Board
MVT
1
1
8
55
30
02
FL
83
00
2C
IM
R1
00
C2
00
Serial
Port
7
24-Apr-06
1141 Code Example: 1141C
Pulse In
Analog
Out
Digital I/O
0
1
0
1
0
2
NOTE: MIO2 boards are like MIO1 except they incorporate terminals strips on the board
rather then using the mainboard.
MOUNTING
Pipe Mount Universal (CS), with 2" U-Bolt
Pipe Mount Universal (SS), with 2" U-Bolt, Enclosure 4X (1141C only)
Wall / Panel Mount
NOTE:
7a. 1141G must use option code WL - Wall / Panel Mount
7b. 1141L must use option code 2C or WL
TRANSDUCER
No Transducer
Integral Mounted MVT Transducer - other than shown (Specify as a separate line item) Division 2 only
Order Code
Static psi
Differential Inch wc
Standard
NACE
100
30
01
N1
300
200
03
N3
*
840
08
N8
500
200
05
N5
200
12
M2
*
1500
400
14
M4
18
M8
840
32
L2
200
3000
34
L4
400
38
L8
840
200
52
K2
5300
54
K4
400
58
K8
840
Integral Mounted Pressure Transducer (require special acceptance)
Static
Pressure only Transducer
Code
(psi)
100
P1
200
P2
Referenced to atmosphere
300
P3
500
P5
1000
P6
1500
P7
Sealed Gauge
3000
P8
5000
P9
8a. Integral mounted transducers are not available for the 1141G
8b. Pressure transducers indicated are not custody transfer (MC) approved.
8c. Use IM or PT codes when multiple transducers are mounted on unit.
* Ranges also stocked in Houston
9 RTD (Armored 4 wire 100 Ohm Platinum)
None
10 foot
30 foot
NOTE:
9a. For non-standard lengths, please consult factory
10 COMMUNICATIONS INTERFACE - For Division 2 Approved configurations
NONE
NOTE:
THIS FIELD [10] IS ONLY APPLICABLE TO MODELS 1141C & 1141L
Integral communication devices require special acceptance
Special, specify as a separate line item
11 APPROVALS
None
CSA, Division 2
Measurement Canada (MC) - Configuration Lock Seal, Division 2
ATEX / CE, Zone 2 (pending)*
* Battery may not exceed 33 Ah
10
26
2C
2S
WL
00
IM
99
NOTE:
76
R0
R1
R3
00
SP
00
C2
M2
A2
Appendix A: Specifications
Appendix
A: Specifications
General Specifications
Environmental
CSA Certification
Class I, Division 2, Groups A, B, C & D
Operating Temperature
-40°C to +40°C (-40°F to +104°F) with standard SLA battery
-40°C to +60°C (-40°F to +140°F) with high-temperature SLA battery
Any accessory or option not rated for +70°C (+158°F) or higher will require
the 1141 assembly to be derated by 10°C (18°F) degrees below the rated
temperature of the component.
Relative Humidity
0% to 95% Non-condensing
Enclosures
1141C (NEMA 4 or optional 4X)
Fiberglass-reinforced plastic
Dimensions: 8 1/3” deep x 14 1/2” wide x 16 1/2” high
Supports integral battery
1141L (NEMA 3)
Painted steel
Dimensions: 8” deep x 12” wide x 12” high
Supports integral battery
1141G
Chassis for mounting in other enclosures or cabinets
Dimensions: 10.1” x 9.6” x 2.5”
Computer
CPU Speed:
7 MHz
Real-time Clock:
Time clock/calendar with battery backup
Program Memory:
Up to 768 Kbytes FLASH ROM memory
77
Scanner 1141 Hardware User Manual
New application programs (firmware) can be loaded to the FLASH ROM using the WinsLoad or
ScanFLASH utility program on a Microsoft Windows-compatible PC. RAM is available for
operating system and intermediate calculations and NVRAM stores configuration, flow history,
alarm, event logs and concurrent operations.
RAM size is jumper-selected to be either 64 or 96 Kbytes. NVRAM is what remains of the 256
Kbytes of memory after RAM is selected. (Refer to RAM Size (CN11), page 36 for details.)
Memory Options
CN11
RAM
NVRAM
Low (L)
64 Kbytes
192 Kbytes
High (H)
96 Kbytes
160 Kbytes
256 Kbytes
Memory Backup Battery: powers the clock and maintains the contents of the NVRAM during power
outages.
•
For Class I, Division 2 applications, a user-replaceable button cell lithium battery (CR2032) provides
backup NVRAM for 1 year at 40°C, and 1.5 years at 20°C.
Manufacturer
Model
(20 mm dia. X 3.2 mm thick)
Panasonic
CR2032 or BR2032
Duracell
DL2032
Energizer
CR2032 or BR2032
Toshiba
CR2032 or BR2032
Rayovac
CR2032
Saft
LM2032
Maxell
CR2032
Display
User-assignable data is displayed on an auto-scroll 2-line x 16 character LCD. The display can be
activated by a push button on the mainboard, or it can be firmware-configured to always be enabled.
Backlighting is available on some hardware configurations; the operator can turn the backlight off or
turn the entire display off via jumper selection to conserve power.
78
Appendix A: Specifications
The display contrast can be manually adjusted. Contrast is factory-set for optimized viewing.
Viewable LCD Area:
99 x 24 mm (3.9 x 0.9”)
Character Size
4.84 mm wide x 9.66 mm high
Character Format
5 x 7 dots
Operating Temperature
-20°C to +70°C (-4°F to +158°F)
Storage Temperature
-40°C to +80°C (-40°F to +176°F)
Installation
1141C or 1141L: The 2x16 display is viewable on the outside of the weatherproof enclosure, and it
connects to a female connector on the non-component side of the mainboard.
1141G: The 2x16 display connects to a male connector on the component side of the mainboard via a
short ribbon cable.
System Board
The system board contains the central processing unit, FLASH EPROM memory, RAM, NVRAM,
interface circuitry for the display, and up to four serial ports. Class I, Division 2 configurations also
include a charge controller integral to the system board. This board provides analog I/O and
status/pulse I/O to support up to two natural gas or liquid flow runs with proportional/integral control.
Connection of I/O to the system board is provided by up to 50 terminals with cage type screw
termination blocks with integral test points. There are also connectors along the terminal edge of the
system board for TTL communication and MVT interface.
Each mainboard has an RS-232C local console port (A01), an RS-485 serial port (A21), and an A02
serial port.
Class I, Division 2 configurations also feature an MVT/RTD serial interface. An MVT is a multivariable transducer capable of reading both static pressure and differential pressure.
The RTD (analog) input supports up to two RTDs; each RTD can be firmware-configured as two
analog inputs.
79
Scanner 1141 Hardware User Manual
The following are standard configurations of the mainboard:
Hazardous Location, Class I, Division 2
2nd
Serial
Port
Analog
Input
RTD
(Analog)
Input
Pulse
Input
Analog
Output
Discrete
I/O
Charge
Controller
Transmitter
Supply
(see
descriptions
below)
Notes
Order
Code
RS-232/
TTL
RS-232/
TTL
RS-232/
RS-485/
TTL
Notes:
0
0
0
0
2
10 A
CL & 12VL
B1
2
1(2)*
1
1
4
10 A
CL & 12VL
M1
2
2(4)*
2
1
4
10 A
Smart dual
stage
CL & 12V
Stepup
1, 2, 3
FL
1. Mainboard includes a Configuration Lock switch (Measurement Canada), and display backlighting.
2. Analog inputs have sockets on the mainboard for inserting precision resistors for 4-20 mA inputs.
3. 6V system power - low cutoff is 5.6V. Without low cutoff option, cutoff is 6V.
(CL) Current Limited Transmitter Supply: Current limited output that is “powered” from the higher of the
battery and power input voltages. Approximately 50 mA, on Vtx1.
(12VL) 12V, 30 mA Voltage Limited Transmitter Supply: Outputs the higher of the battery and power input
voltages, less 0.25V to a maximum of 12V, on Vtx2.
(12V Stepup) 12V, 30 mA Stepup Transmitter Supply: Outputs 12V regardless of battery and power input
voltages, recommended for 6V systems with 12V transmitters on Vtx2.
Communications Port
80
Quantity
1 to 4 serial ports
A01* (port 1)
RS-232C local console c/w TX, RX, and GND
A02* (port 2)
RS-232C, RS-485 or TTL, firmware configured
A21* (port 3)
RS-485 (H0 configuration also has RS-232C)
A22 (port 4)
MVT/RTD transducer input, serial TTL (Division 2)
Baud Rates
110, 150, 300, 600, 1200, 2400, 4800, 9600, or 19200 bps,
firmware configured
Bits per Character
7 or 8, firmware configured
Stop Bits
1 or 2, firmware configured
Parity
even, odd, or none, firmware configured
RS-232C ports
TX, RX, RTS, CTS, GND (Flow control software or hardware)
CTS
OFF/ON
RTS Delay
Manually entered in milliseconds
Appendix A: Specifications
Communications Port (cont’d)
RS-485 ports
RS-485 is a two-wire, AC-coupled connection that uses
dedicated terminals that are separate from the RS-232C, with
switch-selectable biasing and termination resistors.
TTL ports
The TTL has an 8-pin molex connector, with Tx (3.3V), Rx (3.3V
or 5V), RTS, CTS, GND, earth GND. Firmware-configurable for
normal or inverted orientation.
*DMA (Direct Memory Access) on Rx and Tx of ports A01, A02, and A21.
MVT/RTD Input
The MVT/RTD Multivariable Transducer uses a serial TTL interface to transmit differential pressure,
static pressure, and temperature to the Scanner EFM/RTU. This configuration can be used in Class I,
Division 2 applications.
MVT Inputs
Quantity
2 (1 static pressure and 1 differential pressure )
Accuracy
Differential Pressure Accuracy (30 In. H2O): ±0.10%
Differential Pressure Accuracy (200 to 840 In. H2O): ±0.05%
Static Pressure Accuracy: ±0.05%
Temperature Performance
±0.25% of full scale over full operating temperature range
Effect on differential pressure
for a 100-psi change in static
pressure
Span shift ± 0.01% of reading
Zero shift listed by URL:
Stability
Long-term drift is less than ± 0.05% of URL per year over a 5year period.
Differential Pressure
URL (inches wc)
30
200
200
300
400
840
840
Static Pressure
URL (psi)
100
300
500 to 5300
1500 to 5300
1500 to 5300
300
1500 to 5300
Zero Shift
(% of URL)
±0.05%
±0.007%
±0.01%
±0.004%
±0.004%
±0.002%
±0.004%
81
Scanner 1141 Hardware User Manual
MVT Inputs (cont’d)
Ranges available in standard and
NACE
100 psia static pressure with differential pressure of 30” wc
300 psia static pressure with differential pressure of 200 or 840” wc
500 psia static pressure with differential pressure of 200” wc
1500, 3000 or 5300 psia static pressure with differential pressure of
200, or 840” wc
Pressure Limits and Bolt Material
Static Pressure Range (URL) a
a
b
Safe Working Pressure (SWP) b
Bolt Material
PSIA
Mpa(a)
PSIA
Mpa(a)
Standard
NACE
100
0.7
450
3.1
B7 or 316 SS
B7M
300
2.1
450
3.1
B7 or 316 SS
B7M
500
3.4
750
5.1
B7 or 316 SS
B7M
1500
10
2250
15
B7 or 316 SS
B7M
3000
20
4500
31
B7 or 17-4 SS
718 Inconel
5300
36
5800
40
B7
718 Inconel
URL is “upper range limit,” the highest pressure the transducer can measure.
SWP is the highest pressure that can be applied to the transducer without damage.
RTD Input with MVT
Quantity
1
Type
100Ω 4-wire lead compensation
Range
-200°C to +850°C (-325°F to +1560°F)
Accuracy
± 0.28°C (± 0.5°F) @ 25°C (77°F) ambient including RTD
linearization
Temperature Effect
± 1.0°C over entire Scanner operating range
RTD Element
½” FNPT field-adjustable fitting adapts to thermowells with up to 5” (127 mm) U-dim (longer
elements optionally available). The ¼” diameter element has 10 foot (3m) or 30 foot (9m) leads
sheathed in stainless steel armor. RTD accuracy is +/- 0.1 ohm @ 0°C.
82
Appendix A: Specifications
RTD (Analog) Inputs
Quantity
3 (up to 2 on the main board plus 1 with MVT/RTD)a
Type
100Ω 3-wire lead compensation
Range
(Default) -45°C to +120°C (-50°F to +250°F)
(User-enterable) up to +210°C (410°F), if lead compensation is less
than 1Ω
Accuracy
± 0.25°C (± 0.45°F) @ 25°C (77°F) ambient including RTD
linearization
Temperature Effect
± 1.0°C over entire Scanner operating range
a
Each mainboard RTD input can be firmware-selected as two analog inputs, with the same
specifications as the Analog Inputs.
Analog Inputs
Quantity
6 maximum (2 on the main board plus each RTD input can be
configured as two analog inputs)
Type
1-5V or 4-20 mA with 250Ω load resistor
Accuracy
± 0.050% of span max. error @ 25°C (77°F)
Temperature Effect
± 0.3% over entire Scanner operating range
Impedance
>10 MΩ (1-5V input)
approximately 250Ω (4-20 mA input)
Over Voltage Protection
± 30 VDC
A/D Resolution
16 Bit
Linearity Error
± 0.020% Max.; ± 0.010% typical
Pulse Inputs
Quantity
1 or 2 configured using DIP switch settings
Status Signal Types
3.7V threshold, or open collector, or contact closure.
Over Voltage Protection
± 30 VDC
Pulse Signal Types
Preamplified square wave (3.7V threshold)
Open collector
Contact closure
Turbine magnetic pickup coil with auto-variable threshold
noise filter
83
Scanner 1141 Hardware User Manual
Pulse Type
Square Wave
Open Collector
Contact Closure
Magnetic Pick-up
84
Maximum Low
Level Signal
0.8V
Minimum High
Level Signal
2.2V
2 kΩ
200 kΩ
2 kΩ
200 kΩ
Minimum Signal Levels
20 mV p-p @ 20 Hz
20 mV p-p @ 100 Hz
200 mV p-p @ 1000 Hz
400 mV p-p @ 2000 Hz
1000 mV p-p @ 5000 Hz
Frequency Range
Input Impedance
0-8 kHz
>100 kΩ
N.A.
N.A.
Impedance
10 KΩ at 1 kHz
0-10 kHz
0-15 Hz
Appendix A: Specifications
Discrete Inputs/Outputs
Quantity
up to 4 assignable/selectable
Types
status in, status out, pulse out
Maximum Voltage
± 30 VDC
Status/Pulse Out
Max. on-state current 100 mA
Maximum Pulse Output Rates
64 counts/second @ 50% duty cycle
Status Input Threshold
The following values are the guaranteed limits that the input will be detected as having a changed
state. For example, with a 2.0V selection, the input will be detected as false (off) when the input is
less than 0.5V and on when it is more than 3.5V. In typical operation, the trip transition points are
within 0.5 volts of the nominal threshold. Status input functions are user-assignable for signaling
alarms, controlling valves, interface to counters, etc.
Nominal Threshold
2.0V
7.0V
10.0V
Contact In
Maximum Low Level Signal
0.5V
5.0V
8.0V
Minimum High Level Signal
3.5V
9.0V
12.0V
2 KΩ
200 KΩ
Analog Output
The analog output is user-assignable to any rate function (flow rate, temperature, control etc.).
Quantity
1
Types
4-20 mA, optically isolated, externally powered
Maximum Voltage
± 40 VDC
Status/Pulse Out
Max. on-state current 100 mA
Maximum Pulse Output Rates
5 counts/second @ 50% duty cycle
Accuracy
± 0.1% of span max. error @ 25°C (77°F) (after calibration)
Temperature Effect
± 1% of span max. error over temperature
Output Load
R (ohms) = {Supply (volts) – 5.5) / 0.02
Maximum Voltage
± 30 VDC
D/A Resolution
12 Bits
Calibration
Zero and full-scale via software
Settling Time
<100 msec. to 0.1% of full-scale for a 10% step change
Supervisory circuit
On restoring analog loop power, output is 2 mA.
On loss of RTU power, jumper select analog output to go
to minimum level of 2 mA or retain last value.
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Scanner 1141 Hardware User Manual
Expansion Board Interface
The Scanner 1141 has a provision for an expansion board. The MIO2 expansion board standard
configurations are with the following I/O or MVT/RTD only. The specifications for the expansion
board are the same as the main board, unless otherwise noted.
Communications
1 MVT/RTD, serial TTL
Status Input/Status or Pulse Output
4 software selectable threshold in; MOSFET
outputs
Analog Output
1 optically isolated output, 4-20 mA
Pulse Input
1 pulse input (for volume accumulation)
Transmitter and Auxiliary Power Supply
There are several options for powering transmitters and other external devices from the mainboard.
-
Current Limited Transmitter Supply (CL): a resistively limited output that is “powered” from the
higher of the battery and power input voltages. Limited to about 50 mA. “VTx1”on order code
input options B1, M1 and FL.
-
+12V, 30mA Voltage Limited Transmitter Supply (12VL): the supply is generated by a linear
regulator that is powered from the higher of the power input or battery supplies, so that it remains
valid anytime there is a power source for running the computer. The regulator has a low (250mV)
dropout, so that the output will remain above 10.0V down to the typical cutoff voltage for a 12V
SLA battery. This solution is not suited to 6V battery powered systems that require a transmitter
supply. “VTx2” on order code input options B1 and M1.
-
+12V, 30mA Stepup Transmitter Supply (12V): For +6V battery systems, the charge pump is
required to provide an adequate transmitter supply down to the lowest (battery) voltage of
operation. For 12V battery systems transmitters that have a maximum voltage less than the
power input can be connected to this terminal. There is also a current limiter added to the charge
pump output to prevent damage in the event that the transmitter supply is shorted in the field.
“VTx2” on order code input option FL.
Two separate short circuit protected outputs are optionally available for the purpose of powering
radios and other devices. All “Division 2 only” configurations have an 18-watt protected switch that
is the higher of the power input or battery voltage. For example, with 18V power input, 1 Amp
maximum would be available for powering a radio. The FL configuration also has a +5V @ 200mA
output that can then be used to directly power +5V radios or to act as a logic level control signal for
+12V radio systems. Both supplies can be turned on and off in firmware to conserve power in
communication devices. These two outputs can be turned off by setting the low battery alarm, and
turned on when the battery voltage exceeds the low battery alarm by the deadband.
86
Appendix A: Specifications
Power Supply & Battery Charge Controller
For Class I, Division 2 applications, the Scanner 1141 is powered by a battery charger that is
integrated into the main board with a step-down switching regulator power supply. The integral
charge controller can be firmware-configured to work with either 6V or 12V sealed lead acid (SLA)
batteries. Other battery chemistries (such as nickel cadmium) can be accommodated with a firmware
modification.
The following high-temperature SLA batteries rated for +70°C (+158°F) or higher, enable a Scanner
1141 operating temperature of +60°C:
•
Eagle Picher CF-6V58FR-S9; and CF-12V29FR
•
C&D Technologies Inc. MPS12-33 and MPS12-50
With a standard temperature SLA battery, the 1141 operating temperature is -40°C to +40°C (-40°F
to +104°F).
Class I, Division 2, Integral Battery Charge Controller, 6V or 12V
CAUTION
This caution is only applicable when a battery is connected to terminals 2 & 3 (BATT+ &
BATT-)
CAUTION
The power supply must be current limited to 10 amps maximum and also be short circuit
protected.
All solar panels are short circuit capable and can therefore be used with the 1141, provided they do not
exceed 10 amps.
In normal operation the 1141’s charging module will allow electrical current to flow to the battery
unrestricted. The amount of current flow will vary depending on size of the battery and present charge
level (voltage) of the battery and the voltage of the power supply.
The temperature-compensated battery charge controller on the main board has a two-step charge
control algorithm in firmware. The circuit functions as a “pulse mode” charger (rather than a linear
regulator) for bulk charging and relies on a current-limited power source for proper operation. The
optional 3A constant current/constant voltage smart charger with current monitor is used to ensure
the battery has reached full capacity.
•
Bulk Charging
The Bulk Charging option is a protected 10A, high-side (mosfet) switch that is controlled by the
Scanner 1141’s microcontroller. The microcontroller uses a temperature-corrected, dual-level
charging algorithm which will charge the battery at the maximum current that the solar panel can
provide. Charging continues until the overcharge voltage is reached; at that point, the voltage
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Scanner 1141 Hardware User Manual
enters the overcharge (“VoverCharge”) state.
Once VoverCharge is reached, the bulk charger will be left on based on a set period of time at or
above the overcharge voltage. To prevent battery damage, the overcharge state is terminated
immediately if the battery voltage reaches more than 0.5V above the overcharge voltage.
The float state is always entered once the overcharge state is terminated.
The pulse-mode method of charging is done by monitoring the battery voltage and turning the
switch on whenever charging is deemed necessary. A DC supply can be used, provided it is
current-limited to 10A.
•
Smart Charger Constant Current / Constant Voltage
When the smart charger is used with the bulk charger, the bulk charger will quickly recharge a
depleted battery to approximately 80% capacity. The smart charger then brings the battery to a
full charge and maintains the charge until bulk charging is once again required.
The smart charger provides up to 3 amps of charging current and delivers a constant current into
the battery until it reaches the programmed overvoltage setpoint. At this point, the charger will
transition to its constant voltage mode, while continuing to deliver charge into the battery until it
is fully charged. The battery is considered to be fully charged when the charging current has
fallen to a preset level (as programmed according to the size of the battery being charged). At this
charge termination point, the charger is switched to float mode, and the programmed float voltage
is maintained by delivering charge to the battery as necessary.
The "trickle state" exists when battery voltage is severely discharged to a point below a preset level
called (“vTrickle”). When the battery voltage is below “vTrickle,” the smart charger will charge the
battery voltage up to the “vTrickle” level at a lower trickle current.
The power supplies on the main board allow the user to input a single variable voltage. The power
supply provides the various regulated voltages required by the RTU. In applications where a lead
acid battery is integral, the power supply recharges that battery. This function can continue whether
the RTU is switched on or not. As applicable, all power supplies report the input voltage and the
battery voltage to the mainboard. This information is available for remote monitoring.
Sealed Lead Acid Battery
A sealed lead acid battery is paired with a temperature-compensated charge controller for charging the
battery. A high-side bi-directional current monitor may be used to measure the current flowing into the
battery (charging) or out of the battery (discharging). It is an optional item that provides a power system
troubleshooting aid.
1. Input Current Limit:
2. Maximum Input Voltage
3. Input Voltage:
88
10A maximum
28 VDC
Transient protection on input
Voltage drop of 3 VDC nominal
Appendix A: Specifications
Sealed Lead Acid Battery
12 VDC System
6 VDC System
RTU shut down
10.5 VDC
5.6 VDC*
RTU restart
11.0 VDC
5.9 VDC*
–23.6 mV/°C
–11.8 mV/°C
At –20°C
15.4 VDC
7.68 VDC
At 25°C
14.1 VDC
7.05 VDC
At 50°C
13.4 VDC
6.7 VDC
Bulk Charge Voltage
Float voltage plus 0.9 VDC
Float voltage plus 0.45 VDC
Over Charge Voltage
15 VDC
7.5 VDC
10.2 VDC
5.1 VDC
Linear temperature coefficient
Float Charge Voltage
Trickle Charge Voltage
* For order code input options B1 and M1, RTU shutdown is 6.1V and restart is 6.4V.
DC Input
A DC input accepts power from an external current-limited DC power source connected to the power
terminals.
Input Voltage
6 to 28 VDC
Input Current Limit
10A maximum
Power Management
Shuts down at 5.3 VDC
Battery Charge Indicator
As a battery is charged, it progresses through up to four stages or “states.” The LED in the upper left
corner of the circuit board indicates the state of the battery charge by the frequency of blinks it emits.
The table below shows how the blink pattern of the LED corresponds to the state of the voltage
charge. The faster the LED blinks, the lower the voltage that is retained by the battery. For example,
when the LED blinks twice per second, the battery is severely discharged and is considered to be in
the “trickle” state. When the LED blinks only once every 5 seconds, it is fully charged and the
controller attempts to maintain that charge.
State
Trickle State
(battery recovery)
Bulk Charge State
VBAT
(Temp.
Compensated)
< VTrickle
>VTrickle
<VoverCharge
CC/CV Programmable
Charger
Bulk Charger
LED Blink
Pattern*
ON if installed:
V=VoverCharge
I=iTrickle
OFF if bulk charger
installed, otherwise ON:
V=VoverCharge
I=iMax
OFF
Twice per
second
ON, if installed
Once every
2 seconds
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Scanner 1141 Hardware User Manual
State
Overcharge State
VBAT
(Temp.
Compensated)
>VoverCharge
<VoverCharge +
0.5
CC/CV Programmable
Charger
Bulk Charger
LED Blink
Pattern*
ON, if installed:
V=VoverCharge
I=iMax
Once every
second
>VstageReset
ON if installed:
V=VFloatHigh
I=iMax
OFF if smart charger
installed, otherwise ON
for overcharge Time
(seconds)
OFF if smart charger
installed, otherwise duty
cycled ON when below
VFloatLow
Float Charge State
Once every
5 seconds
* LED blinks only if a charging source is present
Accessories
CSA Class I, Division 2 certified radios and modems can be included in the Scanner 1141 enclosure.
Since these devices are rated up to +60°C (+140°F), the Scanner 1141 operating temperature must be
reduced to +50°C (+122°F).
Lightning arrestors are also available for radio antenna connections. Since these devices are rated up to
+50°C (+122°F), the Scanner 1141 operating temperature must be reduced to +40°C (+104°F).
Currently, remote communication devices and lightning arrestors require CSA special acceptance.
Firmware
The Scanner 1141 supports version 4.3.5 and higher of the standard Scanner 1100 Series firmware for
turbine and orifice measurements. Two or three flow runs can be configured in the Scanner 1141, within
the limits of memory (256 Kbytes of RAM/NVRAM) to perform the following calculations:
•
AGA-3 calculations for orifice metering using MVT, MVX-II, analog and RTD inputs
•
AGA-7 calculations from a linear flow meter, such as a turbine meter
•
flow through a liquid stream based on pulse or analog inputs
•
monitor runs to measure pulse input totals or analog inputs
90
Appendix A: Specifications
Outline Dimensions
Scanner 1141C
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Scanner 1141 Hardware User Manual
Scanner 1141L (Front and Side Views)
92
Appendix A: Specifications
Scanner 1141L (Bottom View of Enclosure)
Drill Ø 1.4735
8 in
3 1/4 in
Hole Ø 0.640
Drill Ø 0.875
2 in
6 in
10 in
Notes: 1. All dimensions in inches. Tolerances: Fraction ± 1/32", Decimals 0.XX ± 0.01", 0.XXX ± 0.005"
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Scanner 1141 Hardware User Manual
Scanner 1141G
94
Appendix B: Control Drawings
Appendix
B: Control Drawings
Drawing 1141-11012: Installation, Class I, Division 2
Class I, Div. 2 Control Drawings
1: Installation
96
2: Power Supply
97
3: Communications (Serial Ports)
98
4: Status & Pulse Inputs/Outputs
99
5: RTD Inputs & Analog Inputs/Outputs
100
6: Analog Outputs
101
95
Scanner 1141 Hardware User Manual
Drawing 1: Installation
96
Appendix B: Control Drawings
Drawing 2: Power Supply
97
Scanner 1141 Hardware User Manual
Drawing 3: Communications - Serial Ports
98
Appendix B: Control Drawings
Drawing 4: Status & Pulse Inputs/Outputs
99
Scanner 1141 Hardware User Manual
Drawing 5: RTD Inputs & Analog Inputs/Outputs
100
Appendix B: Control Drawings
Drawing 6: Analog Outputs
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Scanner 1141 Hardware User Manual
102
Appendix C: Principles of Operation
Appendix C: Principles of Operation:
The Scanner 1141 was based on the following principles of operation.
Central Processing Unit (CPU)
The system board utilizes a microcomputer, which provides an interrupt controller, a clock generator,
and a demultiplexed data and address bus. In addition, it contains two serial ports, an 8-bit
comparator port, and digital control lines that can be used for interfacing with various types of digital
I/O. Clock control, as well as halt and stop methods, allow the CPU to minimize system power.
Memory
There are three types of memory in the Scanner 1141: program FLASH memory, random access
memory (RAM), and non-volatile random access memory (NVRAM).
Programs are stored in FLASH memory. FLASH memory enables the user to load new firmware
from an IBM-compatible PC into the Scanner 1141 using WinsLoad or ScanFLASH.
RAM is used as a temporary storage during normal program execution. RAM is volatile; any data
held in RAM is lost if a power failure occurs.
NVRAM is the system’s long-term storage memory for large blocks of vital data (e.g. configuration
data, logs, etc.) that must be protected if there is a power failure. NVRAM power is backed by a
small replaceable on-board lithium battery. If a loss of voltage is detected, the system immediately
saves all necessary data in the NVRAM. When power is restored, the computer resumes exactly
where it stopped when the power failed. The NVRAM is guarded against changes. NVRAM is only
written when there is a configuration change, a power failure, or if a system restart is performed.
This restriction protects vital configuration and measurement data from being lost if there is an
electrical transient or an uncontrolled program.
FPGA
A Field Programmable Gate Array (FPGA) is used to provide support logic for the CPU as well as
provide a number of additional I/O ports. This RAM-based program is loaded from FLASH memory
at system startup, allowing the logic to be modified and updated along with the application code,
adding flexibility to the system.
The FPGA generates the entire read and write information for the memory, I/O spaces, as well as
chip select outputs for all the memory devices.
In addition, the FPGA contains logic for:
•
controlling interrupts
•
a programmable counter for generating the system “heartbeat interrupt”
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Scanner 1141 Hardware User Manual
•
a debounce circuit
•
a counter for the pulse input
•
automatic dispensing of pulses to the pulse output ports
•
interfacing to the serial ports
•
simple output for controlling the A/D system
•
analog outputs
•
transmitter supplies
•
the “watchdog” timer
Clocks and Timers
The CPU clock provides 7 MHz to run the microprocessor. In power-save mode, the CPU clock
automatically shuts down when the processor is inactive.
The real-time clock is a combined clock and calendar with leap years. It provides all timing
functions to the flow computer including the generation of the “heartbeat interrupt” (see Power
Management below) which runs the real-time kernel. The real-time clock provides the accurate time
base for volume integration, estimation, history and data logging, and all other timing functions. The
real-time clock runs continuously; during power outages, it draws power from the memory backup
battery.
The “watchdog” timer prevents the microprocessor from stalling in a loop (e.g., the processor waits
for an input signal that never arrives). If a loop occurs, the Watchdog Timer resets the program to the
initial start point and normal operation continues. Watchdog Timer resets are logged in the Event
log.
Power Management
The Scanner 1141 uses a sophisticated power management system to optimize measurement and
control operations while minimizing power use. A single power input is required; all other supplies
are generated from the mainboard.
To conserve energy, the display automatically shuts down when it is not in use. A push-button switch
on the circuit board is pushed to “wake-up” the display. Any display item can be paused for viewing
by pressing the wakeup button.
A “heartbeat interrupt” pulse triggers the processor periodically for internal process operations.
When the power-saver mode is ON, the real-time clock provides a “heartbeat interrupt” signal that
turns the CPU ON every 1/32 of a second. During this momentary ON period, the CPU performs any
pending tasks. If no tasks are pending, the CPU shuts itself off.
104
Appendix C: Principles of Operation
Power is further conserved through cycling and duty-cycling the end device’s sampling and
calculation frequencies. The RS-232C interface is software-controlled and manages power supplied
to a radio or modem for minimum power consumption.
Analog Inputs
The analog input circuits read voltages from 0 to 5 VDC. Input devices with 1-5V outputs are
connected to analog inputs and scaled from 0 to 100% by software. If 4-20 mA devices are used,
optional precision load resistors can be installed.
Each input signal is connected to an input port on the analog multiplexer (MUX), which routes each
signal sequentially to the input port of the A/D converter (see Figure C.1). The sampling interval is
software-controlled (see Chapter 4 of the ScanWin Lite manual or Chapter 11 of the ScanWin Pro
manual for information on Averaging Delay).
One of the MUX input ports is connected to a precision voltage reference and another port is
connected to ground. This forms the basis for autocalibration. The CPU uses the readings from these
ports to establish internal correction factors for the transmitter signals. Autocalibration corrects drift
in the analog circuitry due to component age, temperature-induced gain variations, cross-channel
leakage in the MUX, assorted component leakage, and other errors. Further corrections determined
from the loop calibration data are applied to account for the end-device characteristics including
static offset, linearity and hysteresis. Various checks ensure that the corrections are “reasonable.”
All analog inputs are single-ended (common ground). Therefore, some method of isolation may be
required to share an analog signal with another device.
Transmitter
Power
Vtx
Analog In
GND
(common)
+
+
Analog
Input
protection
& filtering
etc...
RTD C1
RTD C2
RTD R
Multiplexer
RTD Input
protection
and
filtering
Analog to
Digital
conversion
CPU
16 bit
etc...
Precision
reference
Auto-cal fullscale
Auto-cal zero.
Zero and Fullscale
references converted
periodically for use by
auto-cal correction
routines.
Figure C.1—Routing of analog input signals for conversion to digital readout
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Scanner 1141 Hardware User Manual
RTD Inputs
RTD inputs use a precision current source to measure the resistance of the RTD. Lead length
compensation of the 3-wire RTD is accomplished by measuring the line resistance between terminals
C1 and C2. The multiplexer, A/D converter and autocal are the same as the analog inputs. Each
RTD input can be firmware-configured as two analog inputs.
Pulse Inputs
The Scanner 1141 optional pulse inputs are designed to interface with a wide variety of devices
including variable-reluctance magnetic pick-up coils, and signals from turbine preamplifiers and
simple contact closures. DIP switches select the type of signal to be used for each pulse input.
In all modes, the pulses are accumulated in a hardware register that is periodically read by the
microprocessor in the CPU. The pulse count is used directly in volume calculations. The frequency
(used to determine flow rate) is calculated using the time interval between successive pulses.
106
Appendix D: Input/Output Expansion Board
Appendix
D: Input/Output Expansion Board
MIO2 Expansion Board
The Scanner 1141 MIO2 expansion board is a multipurpose I/O expansion card that provides an
MVT/RTD TTL serial port on a 20 pin connector, a 1-5V/4-20 mA analog output and a multi-interface
pulse input. Each of the interface types for the pulse input is switch-selectable. In addition, the board
provides four ports that can be individually configured via software for operation as a status input, status
output, or pulse output. The MIO2 installs in the Scanner 1141’s expansion slot, and terminal blocks for
field-wiring termination are soldered onto the expansion board. The configuration switches for the analog
output and pulse input are located at the opposite end of the card from the terminals.
Figure D.1—The MIO2 expansion board mounts on standoffs directly above the bottom portion of the main circuit
board.
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Scanner 1141 Hardware User Manual
Specifications
General
Operating Temperature
40°C to +60°C
Classification
CSA certified for Class I, Div. 2, Groups A, B, C & D
Relative Humidity
10% to 95% non-condensing
Serial Port
Quantity
1 (optional)
Port 1 Electrical Interface
MVT/RTD serial TTL
Analog Output
Quantity
1 (optional)
Isolation
Optically isolated to 500 VAC, externally powered
Type
Switch selectable as either 1-5V or 4-20 mA
Accuracy
±0.1% of full scale max. error @ 25°C (after software
calibration)
Temperature Effect
±1% of full scale max. error over temperature
Minimum Operating Voltage
6.5 VDC (4-20 mA), 9.5 VDC (1-5V)
Maximum Voltage
±40 VDC
Minimum load (1-5V mode)
10KΩ
D/A Resolution
12 bits
Calibration
Zero and full-scale software calibration
Settling Time
<100 msec. to ±0.1% of span for a full-scale step change
Status In/Status Out/Pulse Outputs
The MIO2 board provides four (maximum) digital I/O channels that can be individually softwareconfigured as status inputs, status outputs or pulse outputs. Each of the four channels is identical, and
is implemented using a comparator for detecting the state of an (status) input, and an n-channel
MOSFET to provide an open drain status output driver. Pulse outputs are provided by simply driving
the status output on and off at the required pulse output rate in an interrupt driven software routine.
The channels on the MIO2 board are identical to those on the mainboard.
108
Appendix D: Input/Output Expansion Board
Pulse Inputs
Quantity
1 (optional)
Pulse Signal Types
Pre-amplified square wave, open collector, contact
closures, Pepperl & Fuchs inductive proximity sensor or
turbine magnetic pickup coil configured via on board DIP
switch.
Over-Voltage Protection
±40 VDC
Pulse
Type
Maximum
Low Level
Signal
Minimum
High Level
Signal
Frequency
Range
Input
Impedance
Square
Wave
Open
Collector
Contact
Closure
3V
3.7 V
0 - 8 kHz
> 10 KΩ
2 KΩ
200 KΩ
0 - 10 kHz
N.A.
2 KΩ
200 KΩ
0 - 10 Hz
N.A.
Minimum Signal Levels
20 mV p-p @ 20 Hz
Magnetic
Pickup Coil 20 mV p-p @ 100 Hz
20 mV p-p @ 1000 Hz
400 mV p-p @ 2000 Hz
1000 mV p-p @ 5000 Hz
Impedance
10 KΩ @1
kHz
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Scanner 1141 Hardware User Manual
I/O Termination
Source
Terminal #
1
Tx – RS-232C transmit output
RS485+ or RS422 Rx+
2
Rx – RS-232C receive input
RS485- or RS422 Rx-
3
RTS – RS-232C request to send (RTS) output or RS422 Tx+
4
CTS - Auxiliary serial port clear to send (CTS) input or RS422 Tx-
5
DGnd – Digital ground
6
SIO - Status input/output
7
SIO - Status input/output
8
DGnd - Signal common
9
SIO - Status input/output
10
SIO - Status input/output
11
DGnd - Signal common
12
VTx1 - Power for transmitters
13
Pin +, Pulse input positive
14
Pin-, Pulse input negative
15
AnOut+, Analog output
16
Vout
17
AnOut-, Analog output -
B01 Serial Port
B03 Status I/O
B04 Status I/O
B05 Status I/O
B06 Status I/O
B02 Pulse
Input
B07 Analog
Output
B08 MVT
110
Description
CN12
Serial MVT port
Appendix D: Input/Output Expansion Board
Figure D.2 illustrates the position and orientation of this I/O termination connector as well as the serial
port, pulse input, and analog output configuration switches.
Analog Out
Select
Serial Interface Select
OFF
ON
422/485
1
2
RS232C
RS422
RS485
Pulse Input
Mode Select
1 2
3 4
5 6
Vout
Iout
Termination
Figure D.2—I/O termination connector
Configuration Switches
As illustrated above, the board provides configuration switches for serial port, the pulse input and the
analog output. A brief description of each of the switches is given below:
Status Input/Output and Pulse Output Circuits
All settings are software-selected. Hence, there are no switches to set.
Serial Port Switches
The serial port’s configuration is controlled by both a 2-bit DIP switch and a multi-pole slide switch
(see dotted area of Figure D.2). The slide switch selects between an RS-232C interface (left-hand
position) and an RS-422/RS-485 interface (right-hand position).
DIP switch #1 selects between RS-422 (open - OFF) and RS-485 (closed - ON) interfaces when the
slide switch is in the RS-422/RS-485 position). DIP switch #2 connects a 100Ω termination and
should be closed (ON) for an RS-422 interface or if the MIO2 board is the last device on a multi-drop
RS-485 network.
Pulse Input Switches
The six-position DIP switch is used to configure the pulse input circuitry to interface with a variety of
pulse-producing devices. The function of the switches is the same as that of the switches on the
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Scanner 1141 Hardware User Manual
mainboard. A detailed description of the switch settings for each interface is given in the mainboard
Pulse Input section.
Analog Output Switch
The analog output slide switch selects between 1-5V mode (left-hand position) and 4-20 mA mode
(right-hand position). In voltage mode, power is applied between the Ano+ and Ano- terminals with
the 1-5V output signal on terminal Vout (relative to Ano-). In current mode, the circuit operates as a
two-wire device that controls the current flowing from Ano+ to Ano-. In this case, Vout is not used.
MIO2 Expansion Board Installation
The following procedure should only be performed by a trained technician in a NON-HAZARDOUS
area.
1. Use ScanWin to download all configuration, calibration and historical data from the Scanner
RTU.
2. Turn off the Scanner 1141 RTU by moving switch SW11 to the “down” position.
3. Disconnect the power supply to the Scanner 1141.
4. Remove screws or standoffs as follows:
•
For the 1141G, remove the cover plate and four lower standoffs.
•
For the 1141C and 1141L enclosures, remove the four lower screws that hold the mainboard.
5. Install 6-32 x 7/16-in. standoffs on the four lower mounting holes of the mainboard.
6. Remove the MIO2 board from the anti-static bag and install it on the expansion connectors on the
mainboard (CN2 and CN16).
7. Reinstall screws or standoffs as follows:
•
For the 1141G, install four shorter standoffs and the cover plate.
•
For the 1141C and 1141L enclosures, reinstall the four screws.
8. Reconnect the power to the Scanner 1141.
9. Turn ON the Scanner 1141 RTU by moving switch SW11 to the “up” position.
10. Go to the Scanner Hardware page and verify that the resources are all recognized.
11. Configure any new features and test.
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Appendix E: Flashing the Scanner
Appendix
E: Flashing the Scanner
“Flashing” is the term used to describe the procedure that installs a different version of firmware other
than the one with which the Scanner was shipped. If changing the firmware is NOT necessary, the
startup procedure may be initiated. See Startup Procedure, page 55, for details.
Reprogramming the flash memory of the Scanner 1141 with a new version of firmware requires the use
of a loading program. The WinsLoad or ScanFLASH program is utilized in a Windows 3.1, 95, 98, NT,
2000 or XP environment.
Preparing to Flash
To change the firmware installed in the Scanner’s Flash memory, a PC with the WinsLoad or
ScanFLASH program is required.
1. Connect the PC to the Scanner 1141’s console port (Figure E.1).
Console Port
PC
Scanner Cable
Figure E.1—PC to console connection for flashing firmware
2. Start ScanWin.
3. Download all history, configuration and calibration data. (HIGHLY RECOMMENDED)
4. Exit ScanWin.
5. With the Power switch (SW9) in the “ON” position, press and hold the Program Erase button (as
show in Figure E.2) on the main circuit board to erase the existing Scanner firmware.
6. Move the Power switch (SW9) to the “OFF” position to “power down” the Scanner 1141.
7. If the Configuration Locking switch (SW11) is installed, verify that it is UNLOCKED.
8. Proceed to flash a new firmware version with WinsLoad or ScanFLASH.
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Keep pressing Program Erase
switch (SW3) while power switch
(SW9) is turned on.
Figure E.2—Location of Program Erase switch
Before Flashing
If the Scanner EFM/RTU has been in service, collect the data and configuration information before
flashing a new firmware version.
Flashing with WinsLoad
IMPORTANT:
Before the Scanner 1141 firmware can be upgraded, you must have the WinsLoad
software loaded on your PC/laptop and located in its own directory.
Installing WinsLoad
1. Locate the WINSLOAD files on the ScanWin Lite or ScanWin Pro CD, or obtain the WinsLoad
files from Cameron’s Measurement Systems Division.
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Appendix E: Flashing the Scanner
2. Open Windows Explorer and create a directory on the C: drive of your computer. Name the
directory WINSLOAD.
3. If the WinsLoad files are unzipped, copy them to C:\WINSLOAD; if the files are zipped, extract
the contents of WINSLOAD.ZIP into C:\WINSLOAD. The ZIP file contains five files including
the WinsLoad application, two batch files, and two shortcut (PIF) files.
The shortcut files need to be manually put on the desktop
NOTE:
The desktop shortcuts assume that c:\winsload is the default directory for the WinsLoad
application. If you create the WINSLOAD directory elsewhere in your computer, you
must edit the shortcut properties accordingly.
Using WinsLoad
1. Using Windows Explorer, drag the binary firmware file icon onto the appropriate WINSLOAD
icon (.pif, .bat, or .exe).
•
If COM1 is the communication port on your PC, drag and drop the binary file onto
WINSLOAD1.PIF, WINSLD1.BAT or WINSLOAD.EXE
•
If COM2 is the communication port on your PC, drag and drop the binary file onto the
WINSLOAD2.PIF or WINSLD2.BAT icon.
Example: In this case, NGN410R.B31 is being dragged and dropped onto the WINSLOAD1.pif
shortcut.
Alternatively, you can use the
Win95/98/NT command line. For
Windows 3.1, you must use the Run
command in the Program Manager
menu.
The binary firmware filename will be
formatted as follows, depending on the
firmware version you have:
•
NGXXXXXX.B41 for all NGas
versions for the Scanner 1141
•
NFXXXXXX.B41 for all NFlo versions for the Scanner 1141
•
IGXXXXXX.B41 for all IGas versions for the Scanner 1141
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Scanner 1141 Hardware User Manual
2. An MS-DOS window is automatically
opened. WinsLoad checks the validity
of the binary file and if validated, it
displays the information shown here.
3. Press and hold the Program Erase
button while moving SW9 back to the
“ON” position to “power up” the
Scanner.
4. WinsLoad will begin to erase the ROM.
When this process is complete, the
program will upload the new firmware
to the Scanner 1141 while displaying the percentage of the file that has been transferred.
5. When the dialog reports “Transmission completed,” close the window.
6. Move the Power switch (SW9) to the OFF position.
7. Superboot the Scanner 1141 RTU as described in the Startup Procedure on page 55.
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