Rockwell Automation 1762-IR4 RTD/Resistance Input Module User Manual
Page 21
MicroLogix 1200 RTD/Resistance Input Module 21
Publication 1762-IN014B-EN-P - July 2013
Input Channel
Configuration
Via configuration software screen or the user program (by writing a unique bit
pattern into the module’s configuration file). Refer to your controller’s user manual to
determine if user program configuration is supported.
Calibration
The module performs autocalibration on channel enable and on a configuration
change between channels. You can also program the module to calibrate every five
minutes.
Module OK LED
On: module has power, has passed internal diagnostics, and is communicating over
the bus.
Off: Any of the above is not true.
Channel Diagnostics
Over- or under-range or broken input by bit reporting
Maximum Overload at
Input Terminals
±35V DC continuous
Cable Impedance Max.
25
Ω (Operating with >25Ω will reduce accuracy.)
Input Impedance
>10 M
Ω
Power Supply Distance
Rating
6 (The module may not be more than 6 modules away from the controller.)
Channel to Channel
Isolation
±10V DC
(1)
Repeatability is the ability of the module to register the same reading in successive measurements for the same input
signal.
(2)
Open-circuit detection time is equal to channel update time for EXC and RTN leads only, Open-circuit detection on SENSE
input is performed during Cyclic Lead Calibration (every 5 minutes) and only on those channels where cyclic lead calibration
is enabled.
Certifications
Certification (when
product is marked)
(1)
Value
c-UL-us
UL Listed Industrial Control Equipment, certified for US and Canada.
UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified for
U.S. and Canada. See UL File E334470.
CE
European Union 2004/108/EC EMC Directive, compliant with:
EN 61326-1; Meas./Control/Lab., Industrial Requirements
EN 61000-6-2; Industrial Immunity
EN 61000-6-4; Industrial Emissions
EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)
C-Tick
Australian Radiocommunications Act, compliant with:
AS/NZS CISPR 11; Industrial Emissions
KC
Korean Registration of Broadcasting and Communications Equipment,
compliant with:
Article 58-2 of Radio Waves Act, Clause 3
(1)
See the Product Certification link
for Declaration of
Conformity, Certificates, and other certification details.
Specification
1762-IR4