Red Lion ITMS User Manual

GENERAL DESCRIPTION

The ITMS4037 Intelligent Temperature to MODBUS™ Conditioner with
Alarms accepts a wide range of temperature sensors (thermocouple and RTD
elements), and converts the signal into a register format that can be read using
either ASCII or RTU MODBUS protocol.

The ITMS allows a choice of either Fahrenheit or Celsius readout with 0.1 or
1 degree of resolution. An offset value can be programmed to scale the input
signal to meet most process requirements. Additionally, two setpoint values can
be entered for dual relay process monitoring alarms.

The ITMS is programmed with Windows™ based SFIMS software. The
software allows configuration, calibration, and storage of ITMS program files.
Additionally, all setup parameters can be interrogated and modified through
MODBUS register and coil commands.

The RS485 port allows the ITMS to be multidropped, with Baud rates up to

38400. The CBPRO007 programming cable converts the RS232 port of a PC to
RS485, and is terminated with an RJ-11 connector. The bidirectional capability
of the CBPRO007 allows it to be used as a permanent interface cable as well as
a programming cable.

The ITMS’s two relay alarms can be configured independently for absolute
high or low acting with balanced or unbalanced hysteresis. Alarm 2 can also be
configured for deviation and band alarms. In these modes, Setpoint 2 tracks
Setpoint 1. Adjustable alarm trip delays can be used for delaying output
response. The alarms can be programmed for Automatic or Latching. Latched
alarms can be reset with a serial command or a user input. A standby feature
suppresses the alarm during power-up until the temperature stabilizes outside
the alarm region. Standby eliminates power-up tripping for low acting alarms.
A user input can be used to set and reset non-latching alarms. The output relays
can also be manually controlled with register commands.

The module’s high density packaging and DIN rail mounting saves time and
panel space. The module is equipped with a universal mounting foot for
attachment to standard DIN rails, including top hat (T) profile or G profile rail.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

1

O

TEMPERATURE TO MODBUS CONVERSION

O

ACCEPTS THERMOCOUPLE, RTD, mV OR RESISTANCE

SIGNALS

O

PROCESSOR BASED SCALING

O

PC CONFIGURATION SOFTWARE

O

DUAL SETPOINT RELAY ALARMS

O

FOUR WAY SIGNAL ISOLATION

MODEL ITMS - INTELLIGENT TEMPERATURE TO MODBUS CONDITIONER W/ ALARMS

MODEL

ITMS

DESCRIPTION

Temperature to MODBUS Conditioner w/Alarms

PART NUMBER

ITMS4037

CBPRO

SFIMS

Programming Interface Cable

PC Configuration Software for Windows

CBPRO007

SFIMS

CBJ

Cable RJ11 to Unterminated 7 foot length CBJ11A07

RJ Connector to Terminal Adapter

Cable RJ11 to RJ11 6 inch jumper

DRRJ11T6

CBJ11BD5

ORDERING INFORMATION

DIMENSIONS In inches (mm)

CAUTION: Read complete

instructions prior to installation

and operation of the unit.

CAUTION: Risk of electric shock.

Bulletin No. ITMS-B

Drawing No. LP0494

Released 1/07

Tel [phone]

Fax [phone]

www.redlion.net

UL Recognized Component,
File # E179259

2

SPECIFICATIONS

1. POWER: 18-36 VDC, 3.0 W max. or 24 VAC, ±10%, 50/60 Hz, 4 VA max.

2. INPUT:
Sample Rate: 67 msec. (15 Hz)
Failed Sensor Response: Open or shorted (RTD only) sensor coils indication,

error code returned in Process Value
Common Mode Rejection: 50/60 Hz, 110 dB min.
Overvoltage: 30 VDC
Response Time: 150 msec. max.

3. THERMOCOUPLE INPUTS:
Types: T, E, J, K, R, S, B, N, C, linear mV
Input Impedance: 20 MΩ
Lead Resistance Effect: 0.22 µV/Ω
Resolution: 1° or 0.1° for all types

4. RTD INPUTS:
Type: 2 or 3 wire
Excitation: 150 µA
Lead Resistance: 10 Ω max.
Resolution: 1° or 0.1° for all types

5. INDICATION ACCURACY: ±(0.3% of span, +1°C), includes NIST
conformity, cold junction effect, A/D conversion errors, tempco and
linearization conformity at 23°C after 20 minute warm-up.
Span Drift (max) : 0.01% /°C

6. USER INPUT: Internally pulled up to +5 VDC. VIL= 0.78 V max.,
VIH= 1.8 V min. I

OFF

= 9 µA max. 30 V max. over voltage continuously.

7. ISOLATION LEVEL: 1.5 KV @ 50/60 Hz, 1 minute (150 V working)
between input, RS485 and power supply. 2300 Vrms, 1 minute (300 V
working) to relay contacts.

8. SERIAL COMMUNICATIONS:
Type: RS485; RTU and ASCII MODBUS modes
Baud: 300, 600, 1200, 2400, 4800, 9600, 19200, and 38400
Format: 7/8 bit, odd, even and no parity
Transmit Delay: Programmable. (See Transmit Delay explanation in Step 6)
Transmit Enable (TXEN): (primarily for 20 mA loop converter) open
collector V

OH

= 10 VDC max. VOL= 0.5 VDC @ 5 mA max. current limit

9. A/D CONVERTER: 16 bit resolution

10. RELAY OUTPUTS:
Type: 1 Form A N.O. contacts, 1 Form C DPDT
Rating: 5A @ 30 VDC or 250 VAC max. (resistive)

1/10 HP @ 120 VAC (inductive)

Response Time: 155 msec. max. to close including step response, 153 msec.

max. to open.

Output On Delay Time: Programmable from 0 to 32000 sec ±0.01% - 1 sec. max.

11. MEMORY: Nonvolatile E

2

PROM retains all programmable parameters.

12. ENVIRONMENTAL CONDITIONS:
Operating Temperature Range: -20 to +65 °C
Storage Temperature Range: -40 to +85 °C
Operating and Storage Humidity: 85% max. relative humidity (non­condensing) from -20 to +65 °C
Altitude: Up to 2000 meters

13. CERTIFICATIONS AND COMPLIANCE:

SAFETY

UL Recognized Component, File # E179259, UL3101-1, CSA 22.2 No. 1010-1

Recognized to U.S. and Canadian requirements under the Component
Recognition Program of Underwriters Laboratories, Inc.

IECEE CB Scheme Test Certificate # US/5141A/UL,

CB Scheme Test Report # 01ME11540-0702001

Issued by Underwriters Laboratories, Inc.

IEC 1010-1, EN 61010-1: Safety requirements for electrical equipment

for measurement, control, and laboratory use, Part 1.

ELECTROMAGNETIC COMPATIBILITY

Notes:

1. This device was designed for installation in an enclosure. To avoid

electrostatic discharge to the unit in environments with static levels above
6 KV, precautions should be taken when the device is mounted outside an
enclosure. When working in an enclosure (ex. making connections, etc.),
typical anti-static precautions should be observed before touching the module.

Refer to the EMC Installation Guidelines section of this bulletin for

additional information.

14. CONSTRUCTION: Case body is black high impact plastic. Installation
Category II, Pollution Degree 2.

15. CONNECTIONS: Wire clamping screw terminals.

16. MOUNTING: Universal mounting foot for attachment to standard DIN
style mounting rails, including top hat (T) profile rail according to EN50022

- 35 x 7.5 and -35 x 15, and G profile rail according to EN50035 - G32.

17. WEIGHT: 4.5 oz. (127.57 g)

Power mains class A

Enclosure class AEN 55011RF interference

Emissions to EN 55011

Level 3; 10 V/mENV 50204Simulation of cordless telephone

150 KHz - 80 MHz

Level 3; 10 V/rms EN 61000-4-6RF conducted interference

Level 3; 2 KV power

Level 4; 2 KV I/O EN 61000-4-4Fast transients (burst)

80 MHz - 1 GHz

Level3; 10 V/MEN 61000-4-3Electromagnetic RF fields

Level 3; 8 KV air

1

Level 2; 4 KV contact EN 61000-4-2Electrostatic discharge

200 Hz, 50% duty cycle

Immunity to EN 50082-2

900 MHz ± 5 MHz

BLOCK DIAGRAM

RTD TYPE INPUT TYPE RANGE

385

100 Ω platinum,
Alpha=.00385

-200 to +800°C

-328 to +1472°F

392

100 Ω platinum,
Alpha=.003919

-200 to +800°C

-328 to +1472°F

672

120 Ω nickel,
Alpha=.00672

-80 to +260°C

-112 to +500°F

Ohms Linear Resistance

0 to 440 Ω

TC TYPE DISPLAY RANGE

WIRE COLOR

ANSI BS 1843

T

-200 to +400°C

-328 to +752°F

(+) blue

(-) red

(+) white

(-) blue

E

-200 to +750°C

-328 to +1382°F

(+) violet

(-) red

(+) brown

(-) blue

J

-200 to +760°C

-328 to +1400°F

(+) white

(-) red

(+) yellow

(-) blue

K

-200 to +1372°C

-328 to +2502°F

(+) yellow

(-) red

(+) brown

(-) blue

R

0 to +1768°C
+32 to +3214°F

No Standard

(+) white

(-) blue

S

0 to +1768°C
+32 to +3214°F

No Standard

(+) white

(-) blue

B

+200 to +1820°C
+392 to +3308°F

No Standard No Standard

N

-200 to +1300°C

-328 to +2372°F

(+) orange

(-) red

(+) orange

(-) blue

C

W5/W26

0 to +2315°C
+32 to +4199°F

No Standard No Standard

mV -10 mV to 65 mV NA NA

3

MODULE ISOLATION

The ITMS features “4-way” signal isolation. The 4-way isolation is a
combination of optical, transformer and relay barriers, providing common mode
voltage (CMV) isolation to 1.5 KV for 1 minute between input, RS485, and
power supply. Isolation between relay contacts and all other inputs is 2300 Vrms
for 1 minute.

LED FUNCTIONALITY

CONDITION GREEN LED 2 RED LEDS

Power Applied On ———

Communication Received Flashing ———

Respective Alarm On On

Checksum error Flashing Flashing

Calibration Off On

EMC INSTALLATION GUIDELINES

Although this module is designed with a high degree of immunity to Electro­Magnetic Interference (EMI), proper installation and wiring methods must be
followed to ensure compatibility in each application. The type of the electrical
noise, source or coupling method into the unit may be different for various
installations. Cable length, routing, and shield termination are very important
and can mean the difference between a successful or troublesome installation.

Listed below are some EMC guidelines for successful installation in an
industrial environment.

1. Use shielded (screened) cables for all Signal and Control inputs. The shield

(screen) pigtail connection should be made as short as possible. The

connection point for the shield depends somewhat upon the application.

Listed below are the recommended methods of connecting the shield, in order

of their effectiveness.

a. Connect the shield only at the rail where the unit is mounted to earth

ground (protective earth).

b. Connect the shield to earth ground at both ends of the cable, usually when

the noise source frequency is above 1 MHz.

c. Connect the shield to common of the unit and leave the other end of the

shield unconnected and insulated from earth ground.

2. Never run Signal or Control cables in the same conduit or raceway with AC

power lines, conductors feeding motors, solenoids, SCR controls, and

heaters, etc. The cables should be run in metal conduit that is properly

grounded. This is especially useful in applications where cable runs are long

and portable two-way radios are used in close proximity or if the installation

is near a commercial radio transmitter.

3. Signal or Control cables within an enclosure should be routed as far away as
possible from contactors, control relays, transformers, and other noisy
components.

4. In extremely high EMI environments, the use of external EMI suppression
devices, such as ferrite suppression cores, is effective. Install them on Signal
and Control cables as close to the unit as possible. Loop the cable through the
core several times or use multiple cores on each cable for additional
protection. Install line filters on the power input cable to the unit to suppress
power line interference. Install them near the power entry point of the
enclosure. The following EMI suppression devices (or equivalent) are
recommended:
Ferrite Suppression Cores for signal and control cables:

Fair-Rite # 0443167251 (RLC # FCOR0000)
TDK # ZCAT3035-1330A
Steward # 28B209-0A0
Line Filters for input power cables:
Schaffner # FN610-1/07 (RLC # LFIL0000)
Schaffner # FN670-1.8/07
Corcom # 1 VR3

Note: Reference manufacturer’s instructions when installing a line filter.

5. Long cable runs are more susceptible to EMI pickup than short cable runs.
Therefore, keep cable runs as short as possible.

4

WIRING CONNECTIONS

All conductors should meet voltage and current ratings for each terminal.
Also, cabling should conform to appropriate standards of good installation, local
codes and regulations. When wiring the module, use the numbers on the label to
identify the position number with the proper function. Strip the wire, leaving
approximately 1/4" (6 mm) of bare wire exposed. Insert the wire into the
terminal, and tighten the screw until the wire is clamped tightly. (Pull wire to
verify tightness.) Each terminal can accept up to one #14 AWG (2.55 mm), two
#18 AWG (1.02 mm), or four #20 AWG (0.61 mm) wires.

MODULE POWER CONNECTIONS

AC module power is connected to terminals 1 and 2. DC module power is
connected with (+) to terminal 1 and (-) to terminal 2. For best results, the power
should be relatively “clean” and within the specified limits. Drawing power
from heavily loaded circuits or from circuits that also power loads that cycle on
and off should be avoided. It is recommended that power supplied to the module
be protected by a fuse or circuit breaker.

INPUT CONNECTIONS

Thermocouple Input

Thermocouple leads are connected to terminals 11 (+) and 12 (-).

RTD Input

For 3-wire RTD elements, connect the sense leads to terminals 11 and 12. The
excitation lead is connected to terminal 10 (EXC).

For 2-wire RTD elements, connect the sense leads to terminals 11 and 12.
Install a copper sense lead of the same gauge and length as the RTD leads.
Attach one end of the wire at the probe and the other end to terminal 10.
Complete lead wire compensation is obtained. This is the preferred method. If a
sense wire is not used, then Terminal 11 should be shorted to terminal 10. A
temperature offset error will exist. The error may be compensated by
programming a temperature offset.

RELAY OUTPUT CONNECTIONS

Relay 1

Relay 1 is a Form A output relay. Wiring is connected between terminal 9

(COMM.) common and terminal 8 (N.O.) the normally open contact.

Relay 2

Relay 2 is a Form C output relay. Wiring is connected between terminal 4
(COMM.) common and either terminal 5 (N.O.), the normally open contact, or
terminal 3 (N.C.), the normally closed contact.

To prolong contact life and suppress electrical noise interference due to the
switching of inductive loads, it is good installation practice to install a snubber
across the contacts. Follow the manufacturer’s instructions for installation.

Note: Snubber leakage current can cause some high impedance loads to be held ON.

DEFAULT SERIAL SETTING CONNECTION

If the ITMS settings are unknown, or forgotten, they can be reset to the
factory defaults by connecting the Serial Default terminal 7 to Input Comm.
terminal 12 with a jumper, and then cycling power.

Defaults:

USER INPUT CONNECTION

The user input is activated when terminal 6 is pulled low (connected to Input
Comm. terminal 12).

RS485 SERIAL CONNECTIONS

There are two RJ-11 connectors located on the bottom for paralleling
communications. For single device communications, either connector can be
used. When used in conjunction with Red Lion Control Paradigm HMI products,
reverse A+ and B- wiring.

RJ11 ITMS

1 Not used

2B-

3A+

4 COMM

5 TXEN

6

2345

Not used

ITMS CONNECTOR

STEP 1 WIRING THE MODULE

STEP 2 INSTALLING SFIMS (Software for Intelligent Modules)

Insert the SFIMS diskette into the A: or B: drive. Then Run A:\SETUP
(or B:\SETUP) to install RLCPro onto the hard drive. An icon labeled
RLCPro will be created under the group RLCPro.

Protocol: RTU 8Data Bits:

Address: 247 noneParity:

Baud Rate: 9600

5

STEP 3 PROGRAMMING - Getting Started

Run RLCPro by double-clicking the icon, or use the start menu.

Use the FILE pull-down menu

to select a NEW file.

You will be prompted to

select the proper device,

and then the model.

STEP 4 PROGRAMMING THE INPUT

The ITMS receives a temperature sensor input, converts it to a raw digital value, and stores this number in the ADC Value (register 40001). This number
is scaled into degrees, and a programmable Offset Value (register 40012), that can be used for sensor correction, is applied. The result is stored as the
Temperature Value (register 40002). It is also stored in the IEEE 754 Standard 32-bit floating decimal format (register 40003 and 40004). The non-scaled
ADC, the scaled Process Temperature Value, or the Floating Point Value may be accessed for the purpose of monitoring the input level.

INPUT
SIGNAL

Register 40001

ADC READING

INTERNAL

MATH

OFFSET

PROCESS

TEMPERATURE

VALUE

LO Order Byte

HI Order Byte

IEEE STANDARD 754

FLOATING DECIMAL POINT

Register 40003
Register 40004

Register

40012

Register 40002

Input Type: Select the proper input type from the pull down menu.

Scale: Select Fahrenheit or Celsius. In linear millivolt or resistance modes, this has no

effect.

Resolution: For thermocouple, RTD, or linear resistance modes, low resolution selects

whole degrees or ohms. In these same modes, high resolution selects tenth of degrees
or ohms. In linear mV mode, low selects hundredths of mV, and high selects
thousandths of mV.

Offset: The Offset value can be used as a sensor correction value.

Filter Response: The Filter Response is a time constant, in tenth of second increments,

that is used to stabilize an erratic input. The Process Value stabilizes to 99% of the final
value within approximately 5 time constants. A value of ‘0’ disables digital filtering.

Filter Band: Filter Band is a value expressed in Temperature (degrees or tenths) units.

When a fluctuating signal remains within the band value, the Digital Filter is active,
and therefore stabilizes the Process Temperature Value. When a fluctuating signal
exceeds the Filter Band value, the Digital Filter is momentarily disabled to allow for
quick response to valid process changes. Once the signal variation is less than the Filter
Band value, the Digital Filter is reactivated.