Rockwell Automation 1746-NR8 SLC 500 RTD/Resistance Input Module User Manual - Manual (Page 102)

Publication 1746-UM003A-EN-P
A-2 Specifications
Environmental Specifications
Input Specifications
Operating Temperature 0°C to +60°C (+32°F to +140°F)
Storage Temperature -40°C to +85°C (-40°F to +185°F)
Relative Humidity 5% to 95% (without condensation)
Hazardous Environment Classification Class I, Division 2
Agency Certification
(when product or packaging is marked) UL and CSA Class I,
Division 2 Groups A, B, C, D certified
CE compliant for all applicable directives
RTD Types platinum, nickel, nickel iron, copper
(For additional information on RTD types, see page A-3.)
Temperature Scale
(Selectable) C or F and 0.1 C or 0.1 F
Resistance Scale
(Selectable) 1
Ω
or 0.1
Ω
for all resistance ranges except 150
Ω
; or 0.1
Ω
or
0.01
Ω
for 150
Ω
potentiometer.
Input Step Response See channel step response, page 3-5.
Input Resolution and
Repeatability See RTD and resistance device compatibility tables on page 1-3.
Display Resolution See Channel Data Word Resolution table on page 4-14.
Module Update Time See Chapter 3, Update Time, page 3-10.
Channel Turn-On Time Requires up to one module update time plus 125 milliseconds x
the number of unique input type and excitation current
combinations.
Channel Turn-Off Time Requires up to one module update time.
Reconfiguration Time Requires up to one module update time plus 125 milliseconds x
the number of unique input type and excitation current
combinations.
RTD Excitation Current Two current values are user-selectable:
0.25 mA - Recommended for use with higher resistance ranges
for both RTDs and direct resistance inputs (1000
Ω
RTDs and
3000
Ω
resistance input). Refer to RTD manufacturer for
recommendations.
1.0 mA - Recommended to use for all other RTD and direct
resistance inputs, except 1000
Ω
RTDs and 3000
Ω
resistance
input ranges are limited. Refer to RTD manufacturer for
recommendations.