Omega | iDRN-RTD | Owner Manual | Omega iDRN-RTD Owner Manual

Omega iDRN-RTD Owner Manual
2
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iDRN-RTD
SPECIFICATIONS:
RTD INPUT
100, 500, 1000 Ohm platinum RTD with both European
(alpha=0.00385) and American (alpha=0.00392) curves.
General Description:
The iDRN Series of DIN rail-mountable signal conditioners
are available for Thermocouple, RTD, Strain, Process, AC
Voltage, AC Current and Pulse/Totalizer input types.
The factory calibrated signal conditioners are ideal for all
process and power monitoring applications, they feature
3-way isolation, high accuracy input, programmable outputs,
and are excellent front end interfaces for programmable logic
controllers or data acquisition systems. For maximum user
configurability the signal conditioners allow complete inputoutput scaling via a RS-232 connection to any PC or PLC.
Software Description:
The signal conditioner configuration program is a MS
DOS/Windows program (this manual is for the Windows
version). It is designed especially for the iDRN Series Signal
Conditioner. This program will run on any PC with Windows
application and will start automatically.
Free Serial Communication software and ActiveX Controls
are on the CD-ROM enclosed with this shipment.
To download the latest software release
(or request a free CD-ROM) please go to:
www.omega.com/software
What You need:
•Your choice of the signal conditioner
•IBM PC or compatible
•Windows software 3.1 or higher, or Windows 95/98
•RJ12 connector with telephone cable
•Adapter (DB9 or DB25 to RJ12)
COMPUTER
CONNECTION
(DB9 or DB25)
RS-232 to
RS-485
CONVERTER
HALF-DUPLEX
#CAT-285
-328 to 1562 °F
-328 to 1562 °F
-328 to 1562 °F
-200 to 850 °C
-200 to 850 °C
-200 to 850 °C
ISOLATION:
Dielectric strength per 1 minute test based on EN 61010 for
50 Vdc or Vrms working voltage.
Three way Isolation:
• Power to Signal Input: 1800V Peak
• Power to Analog Output/Communication: 1800V Peak
• Signal Input to Analog Output/Communication: 1400V Peak
ADAPTOR (DB9/25 to RJ12)
#DB9-RJ12, #DB25-RJ12
J4
INPUT POWER:
10 to 32 Volt DC
POWER CONSUMPTION:
2.4 Watts (100 mA at 24 V DC)
OPERATING AMBIENT:
-5 to +55 °C
J2
STORAGE TEMPERATURE:
-40 to +85 °C
3 WIRE
J3
RTD
RELATIVE HUMIDITY:
90% at 40 °C non-condensing
DIMENSIONS:
COMMON MODE REJECTION:
100 dB
+EXC
+SIG
-SIG
-EXC
J2
2 WIRE
+EXC
+SIG
-SIG
-EXC
J2
4 WIRE
RTD
+EXC
+SIG
-SIG
-EXC
INPUT OVER-VOLTAGE PROTECTION:
250 V AC for 1 Minute
ANALOG TO DIGITAL TECHNIQUE:
Dual slope
READ RATE:
3 readings/second, automatic polarity
J1
ACCURACY AT 25 °C:
±0.5 °C for platinum RTD’s
OPERATIONS:
TEMPERATURE STABILITY:
0.05 °C/°C
Note: When connecting RTD probe using three wires ensure
that the three lead lengths are equal for higher accuracy.
Signal conditioners provide certain degree of protection
against high voltage spikes (250 V ac for 1 minute) which may
be induced accidentally on the RTD wires. To ensure signal
integrity and safe operation never run the signal inputs wires
in the same conduit with ac power lines.
RESPONSE TIME:
To verify the response time, check the carriage return <CR>, it
will be sent at the end of the response. You can send another
command after you receive the <CR>.
SIGNAL CONDITIONER MODULE
RJ12 CONNECTOR
with CABLE
INPUT TYPE:
100 Ohm
500 Ohm
1000 Ohm
4
ANALOG OUTPUT STEP RESPONSE TIME:
2 seconds to 99% of final value
STEP RESPONSE FOR RS232 OUTPUT:
2 seconds to 99% of the final value
(Filter time constant = 64)
Setting up your System
COMPUTER
POWER
CONNECTION
3
i.e.
send: *X01
response: X01<DATA><CR>
WARM UP TO RATED ACCURACY:
30 minutes
ANALOG OUTPUT SIGNAL TYPE:
Voltage: 0-10 Volt, maximum current 10mA
Current: 0-20 mA or 4-20 mA, maximum compliance voltage
10 Volts (maximum loop resistance 500Ω)
ANALOG OUTPUT LINEARITY:
0.1% of FS
INTRODUCTION:
POWER INPUT AND ANALOG OUTPUT SETUP:
The RTD input signal conditioners are high performance
instruments used to measure temperature supporting a
variety of different RTD probes. The following RTD types
may be used with the RTD input signal conditioners: 100, 500,
and 1000 Ohms RTD with either 0.00385 or 0.00392 curves.
Key features to the signal conditioners are 3 or 4 wire RTD
connections to minimize errors due to lead resistance, low 200
µA excitation current to prevent self heating, patented
algorithm for linearization of RTD’s to confirm to NIST and
DIN tables, and a built-in RS232 interface for easy custom
scaling. The RS232 interface may also be used for digital
transmission of input signal to a computer or a PLC.
Additional features include three way isolation between DC
power, signal input and analog output/RS232.
To connect the signal input proceed as follows:
1. Connect a DC power supply with an output voltage
between 10 to 32 Volt DC to the signal conditioner (J1).
Note: If power supply used has current limiting, it may not
be able to power the signal conditioners if the available output
voltage is around 10Volt, since the peak current may reach 1
to 5 Amp for a few milliseconds.
2. Determine the RTD type used to measure the temperature.
5
6
3. Determine whether you will use 2, 3, or 4 wire RTD
connection. If the probe lead is less than or equal to 3 feet you
may use 2 wire connection. However, if the probe lead is
longer than 3 feet and you want to obtain high accuracy then
make it 3 or 4 wire connection. Usually 3 wire RTD is
acceptable in most applications.
4. Ensure that if the selected RTD type and the connection
method 2, 3, or 4 wire is different from the default then
change the internal settings in the EEPROM. This can only be
done via the RS232 communication and using the
configuration software explained later in this manual.
5. Connect the RTD probe to the screw terminal, and ensure
that the screws are tight.
6. To verify that the set up is correct, you may connect a DVM
to the analog output. Once connected, power the signal
conditioner. If you have a RTD simulator then select a
resistance corresponding to the desired temperature. Measure
and compare the analog output with expected values. If you
are running the configuration software then the temperature
corresponding to the RTD input resistance may be displayed.
7. To view/change the scaling that relates the analog output
to signal input: Connect the RS232 output of the signal
conditioner to an available serial port of a computer. The
cable and the DB9 or DB25 connectors are available as an
option.
8. Turn on the computer, start Windows 3.0 or higher and run
the Signal Conditioner Configuration Setup Program.
9. To start the configuration program, you need to indicate
which serial port is to be used for serial communication by
checking the appropriate check box on the opening menu.
Note: It is not necessary to know the serial communication
protocol, i.e. baud rate, parity, 7/8 data bit and stop bit; the
program will determine this information automatically.
However, it is a good practice to mark the protocols used on
the signal conditioner label if different from default.
10. Once the program starts it will automatically detect the
signal conditioner configuration and will display a window of
available options. To view the signal input click on the
display on/off.
11. To change analog output scaling choose Analog Output
Scaling and enter the desired values.
12. Once the custom scaling is finished, ensure that Send
Configuration is clicked, otherwise the changes will not take effect.
13. The input/output scaling may be fine tuned, while both
communication and analog output are active. You may make
a change to the analog output in the configuration program,
and watch the DVM connected to analog output of the signal
conditioner follow the new settings.
14. You may save or print a particular configuration by
selecting the file menu. It’s always a good practice to both
print and save the scaling of each signal conditioner.
15. If the program is not able to establish communication then
an error message is displayed. This happens either when the
wrong serial port is specified or when the cable is accidentally
disconnected.
16. The procedure to disable Continuous Mode and change
the iDRN to Command Mode is as follows:
Using HyperTerminal, or any serial communication program,
type: Ctrl + S
To change the device to Command Mode, type: ^AE
To change the Bus Format Register, type: *W0814
To reset the device,type: *Z01
Cycle power to the unit.
Modbus Register Definition
Reg. #
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10
11
12
13
14
15
16
Read Function
Input Range
Input/Output Config.
Decimal Point
Filter Time Constant
Reading/Output Scale
Reading/Output Offset
Comm. Parameters
Comm. Bus Format
Comm. Data Format
Comm. Device Addr.
Comm. Recog. Char.
Unit of measure
Gate Time
Debounce Time
Transmit Time
Main Value
Peak Value
Valley Value
Not Supported
Not Supported
Not Supported
Not Supported
Write Function
# of byte
Input Range
1
Input/Output Conf.
1
Decimal Point
1
Filter Time Constant
1
Not supported
3
Not supported
3
Comm. Parameters
1
Comm. Bus Format
1
Comm. Data Format
1
Comm. Device Addr.
1
Comm. Recog. Addr.
1
Not supported
3
Gate Time
1
Debounce Time
1
Transmit Time
2
Hard Reset
3
Reset Peak
1
Reset Valley
1
L.S. bytes Output Scale
2
M.S. byte Output Scale
1
M.S. bytes Output Offset
2
L.S. byte Output Offset
1
WARNING: These products are not designed for use in, and should not be used
for, patient-connected applications.
This device is marked with the international caution symbol. It is important to
read the Setup Guide before installing or commissioning this device, as the
guide contains important information relating to safety and EMC.
It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to
the European New Approach Directives. OMEGA will add the mark to every
appropriate device upon certification.
The information contained in this document is believed to be correct, but OMEGA
Engineering, Inc. accepts no liability for any errors it contains, and reserves the right
to alter specifications without notice.
PATENT NOTICE: This product is covered by one or more of the following
patents: U.S. Pat. No. Des. 336,895, 5,274,577/ Canada 2052599, 2052600/ Italy
1249456, 1250938/ France Brevet No. 91 12756/ Spain 2039150, 2048066/ UK
Patent No. GB2 249 837, GB2 248 954/ Germany DE 41 34398 C2.
TRADEMARK NOTICE:
®
®
, omega.com are trademarks of OMEGA Engineering, Inc.
iDRN-RTD
RTD Input Signal Conditioner
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and
workmanship for a period of 13 months from date of purchase. OMEGA Warranty adds an
additional one (1) month grace period to the normal one (1) year product warranty to cover
handling and shipping time. This ensures that OMEGA’s customers receive maximum
coverage on each product.
®
®
If the unit should malfunction, it must be returned to the factory for evaluation. OMEGA’s
Customer Service Department will issue an Authorized Return (AR) number immediately upon
phone or written request. Upon examination by OMEGA, if the unit is found to be defective it will
be repaired or replaced at no charge. OMEGA'S WARRANTY does not apply to defects
resulting from any action of the purchaser, including but not limited to mishandling, improper
interfacing, operation outside of design limits, improper repair, or unauthorized modification. This
WARRANTY is VOID if the unit shows evidence of having been tampered with or shows
evidence of being damaged as a result of excessive corrosion; or current, heat, moisture or
vibration; improper specification; misapplication; misuse or other operating conditions outside of
OMEGA’s control. Components which wear are not warranted, including but not limited to
contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA
neither assumes responsibility for any omissions or errors nor assumes liability for any damages
that result from the use if its products in accordance with information provided by OMEGA, either
verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and
free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY
KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED
WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The
remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect
to this order, whether based on contract, warranty, negligence, indemnification, strict liability or
otherwise, shall not exceed the purchase price of the component upon which liability is based. In
no event shall OMEGA be liable for consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a
“Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2)
in medical applications or used on humans. Should any Product(s) be used in or with any nuclear
installation or activity, medical application, used on humans, or misused in any way, OMEGA
assumes no responsibility as set forth in our basic WARRANTY / DISCLAIMER language, and
additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or
damage whatsoever arising out of the use of the Product(s) in such a manner.
OMEGAnet® On-Line Service
www.omega.com
Servicing North America:
USA:
ISO 9001 Certified
Canada:
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN
AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE
DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number
should then be marked on the outside of the return package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging
to prevent breakage in transit.
FOR WARRANTY RETURNS, please have
the following information available BEFORE
contacting OMEGA:
1. P.O. number under which the product
was PURCHASED,
2. Model and serial number of the product
under warranty, and
3. Repair instructions and/or specific
problems relative to the product.
FOR NON-WARRANTY REPAIRS, consult
OMEGA for current repair charges. Have
the following information available BEFORE
contacting OMEGA:
1. P.O. number to cover the COST of the
repair,
2. Model and serial number of product, and
3. Repair instructions and/or specific
problems relative to the product.
OMEGA’s policy is to make running changes, not model changes, whenever an improvement
is possible. This affords our customers the latest in technology and engineering.
OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2004 OMEGA ENGINEERING, INC. All rights reserved.
This document may not be copied, photocopied, reproduced, translated, or reduced to any
electronic medium or machine-readable form, in whole or in part, without prior written
consent of OMEGA ENGINEERING, INC.
M2536/0404
One Omega Drive, P.O. Box 4047
Stamford CT 06907-0047
TEL: (203) 359-1660
FAX: (203) 359-7700
e-mail: info@omega.com
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FAX: (514) 856-6886
For immediate technical or application assistance:
USA and Canada:
Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA®
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Toll Free in England: 0800 488 488
e-mail: sales@omega.co.uk
RETURN REQUEST/INQUIRIES
Note:
1) Main, Peak, Valley value: 4 bytes will send from the unit
a. Highest byte always 00h.
b. 2nd Highest byte: (MSB is sign (1=negative, 0=positive),
next 3 bits are number of decimal points).
c. Low nibble of second byte, and lowest 2 bytes are the
value.
d. The decimal point register has to set to: 1, 2, 3, or 4.
2) Bus Format: Bit 5 1/0 = Modbus/Newport
3) Output Scale/Offset Write:
Due to write single only, two write operation is needed to
write scale/offset, and to make it effective it needs to
follow with Hard Reset command.
4) To configure to Newport protocol, set bit 5 of Bus Format
to low and follow with Hard Reset command.
Internet e-mail
info@omega.com
Servicing Europe:
ISO 9002 Certified
FAX: +420 59 6311114
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