Specifications

Publication 1747-SG001E-EN-E - February 2013
26 Select SLC 500 I/O Modules
The module update time is calculated by summing all the enabled Channel Sampling
Times plus the CJC Update Time.
Data formats Raw/Proportional, Engineering Units, Engineering Units x 10, Scaled-for-PID
Calibration Autocalibration on channel
enable and on a
configuration change
between channels.
Autocalibration at power-up
and approximately every 2
minutes afterward.
Calibrate via ladder program once a year, as
required.
Isolation 500V DC transient between
inputs and chassis ground,
and between inputs and
backplane.
2V DC continuous between
channels (series B or later).
500V DC transient between
inputs and chassis ground, and
between inputs and backplane.
12.5V DC continuous between
channels.
1000V DC transient or 150V AC continuous
channel-to-channel or channel-to-backplane.
Thermocouple Module Specifications
Attribute 1746-NT4 1746-NT8 1746-INT4
Module Update Time for 1746-NT4 and 1746-NT8
Catalog
Number
CJC
Update
Time
Channel Sampling Time per Channel
250 Hz Filter 60 Hz Filter 50 Hz Filter 10 Hz Filter
1746-NT4 14 ms 12 ms 50 ms 60 ms 300 ms
1746-NT8
(1)
(1) The sampling times for filter frequencies listed do not include a 45 ms open-circuit detection.
290 ms 66 ms 125 ms 140 ms 470 ms
Module Update Time and Step Response for 1746-INT4
Corner
frequency
50/60 Hz NMR Filter Time Update Time Step Response
(worst)
8 Hz 50…60 dB 180 ms 400 ms 600 ms
Thermocouple Temperature Ranges
Input Temperature Range for All Modules Accuracy max. error @ +25 °C (+77 °F)
°C °F 1746-NT4 1746-NT8 1746-INT4
J -210…760 °C -346…1400 °F ±1.06 °C (±1.91 °F) ±1.4 °C (±2.52 °F) ±1.6 °C (±2.88 °F)
K -270…1370 °C -454…2498 °F ±1.72 °C (±3.10 °F) ±1.5 °C (±2.7 °F) ±3.8 °C (±6.84 °F)
T -270…400 °C -454…752 °F ±1.43 °C (±2.57 °F) ±1.3 °C (±2.34 °F) ±2.05 °C (±3.69 °F)
B -300…1820 °C -572…3308 °F ±0.73 °C (±1.3 °F) ±1.0 °C (±1.8 °F) ±2.4 °C (±4.32 °F)
E -270…1000 °C -454…1832 °F ±1.39 °C (±2.5 °F) ±1.3 °C (±2.34 °F) ±1.79 °C (±3.23 °F)
R 0…1768 °C 32…3214 °F ±3.59 °C (±6.46 °F) ±3.6 °C (±6.48 °F) ±2.23 °C (±4.02 °F)
S 0…1768 °C 32…3214 °F ±3.61 °C (±6.5 °F) ±3.4 °C (±6.12 °F) ±2.38 °C (±4.29 °F)
N 0…1300 °C 32…2372 °F ±3.12 °C (±5.62 °F) ±2.7 °C (±4.86 °F) ±3.83 °C (±6.90 °F)
C
(1)
0…2317 °C 32…4201 °F N/A N/A ±2.38 °C (±4.11 °F)
D
(1)
0…2317 °C 32…4201 °F N/A N/A ±2.52 °C (±4.54 °F)
CJC Sensor 0…85 ° 32…185 °F N/A N/A N/A
(1) Thermocouple type only available with 1746-INT4 module.