Rockwell Automation 1746-NR4 SLC RTD/Resistance Input Module User Manual - Manual (Page 122)

Publication 1746-UM008B-EN-P - December 2006
122 Specifications
Resistance Device Compatibility
Resistance Input Specification
Input Type Resistance Range
(0.5 mA Excitation) Resistance Range
(2.0 mA Excitation)
Accuracy (1) Temperature
Drift Resolution Repeatability
Resistance
150
Δ
0
Δ to 150 Δ
0
Δ to 150 Δ
(2) (3) 0.01
Δ
X 0.4
Δ
500 Δ 0 Δ to 500 Δ 0 Δ to 500 Δ X 0.5 Δ X 0.014 Δ/ ° C
(X 0.025
Δ/ ° F)
0.1 Δ X 0.2 Δ
1000
Δ 0 Δ to 1000 Δ
0
Δ to 1000 Δ
X 1.0
Δ
X 0.029
Δ/ ° C
(X 0.052
Δ/ ° F
0.1
Δ
X 0.2
Δ
3000 Δ 0 Δ to 3000 Δ 0 Δ to 1900 Δ X 1.5 Δ X 0.043 Δ/ ° C
(X 0.077
Δ/ ° F
0.1 Δ X 0.2 Δ
(1) The accuracy value assumes that the module was calibrated within the specified temperature range of 0…60 °C (32…140 °F).
(2) The accuracy for 150 Ω is dependent on the excitation current:
X 0.2 Ω at 0.5 mA
X 0.15 Ω at 2.0 mA
(3)
The temperature drift for 150 Ω is dependent on the excitation current:
X 0.006 Ω/°C at 0.5 mA
X 0.004 Ω at 2.0 mA
Cable Specifications
Description Belden #9501 Belden #9533 Belden #83503
When used? For two-wire RTDs
and potentiometer For three-wire RTDs
and potentiometers.
Short runs less than
100 feet and normal
humidity levels For three-wire RTDs
and potentiometers.
Long runs greater
than 100 feet or high
humidity levels
Conductors
Two, 0.205 mm
2
(24
AWG) tinned copper
(7× 32)
Three, 0.205 mm
2
(24 AWG) tinned
copper (7× 32)
Three, 0.205 mm
2
(24
AWG) tinned copper
(7× 32)
Shield Beldfoil aluminum
poyester shield with
copper drain wire. Beldfoil aluminum
poyester shield with
copper drain wire. Beldfoil aluminum
poyester shield with
tinned braid shield.
Insulation PVC S-R PVC Teflon
Jacket Chrome PVC Chrome PVC Red Teflon
Agency approvals NEC Type CM NEC Type CM NEC ART-800, Type
CMP
Temperature rating 80 °C (176 °F) 80 °C (176 °F) 200 °C (392 °F)