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Rockwell Automation 1746-NT4 SLC 500 Thermocouple/mV Input Module Installation Instructions User Manual

Page 20

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20 SLC™ 500 4-Channel Thermocouple/mV Input Module

Publication 1746-IN010D-EN-P - June 2004

Physical Specifications

Environmental Specifications

LED Indicators

5 green status indicators, one for each of 4 channels and one for module
status

Module ID Code

3510

Recommended Cable:

for thermocouple inputs

Appropriate shielded, twisted-pair thermocouple extension wire

(1)

(1)

Refer to the thermocouple manufacturer for the correct extension wire.

for mV inputs

Belden #8761 or equivalent

Maximum Wire Size

Two 14 AWG wires per terminal

Maximum Cable Impedance

25 ohms maximum loop impedance, for <1LSB error

Removable Terminal Strip

Allen-Bradley spare part Catalog Number 1746-RT32

Operating Temperature

0°C to +60°C (+32°F to +140°F)

(1)

(1)

When the NT4 module detects zero degrees (+/- 3°) at the CJC, it will detect an out of range condition and set values to
downscale -270°C (-454°F). It is recommended that ambient temperature surrounding the SLC 500 system be maintained
above 3°C (37.4°F) in order for the NT4 module to measure temperature correctly without detecting an out of range
condition.

Storage Temperature

-40°C to +85°C (-40°F to +185°F)

Relative Humidity

5% to 95% (without condensation)

Certification

UL listed

CSA approved

Class I, Division 2, Groups A, B, C, D

CE compliant for all applicable directives when product or packaging is marked