Product Description
__ General Information
|
Manufacturer |
Allen-Bradley |
|---|---|
|
Model/Part Number |
1746SC-CTR8 |
|
Description |
Thermocouple Temperature Input Module for SLC 500 |
|
Product Series |
SLC 500 |
_
__ Detailed Specifications
Thermocouple Temperature Ranges
|
Specification |
Description |
|---|---|
|
Configuration |
4/8 Channel of differential counter inputs, 2/4 Channels of quadrature encoding, 2/4 Input enable control lines |
|
Input Modes |
DC counter, AC flow meter |
|
Voltage Range |
AC: 0-30V P, 5VDC, 12VDC, 24VDC |
|
VIL |
-50mV, 1V, 3V, 5V |
|
VIH |
+50mV, 3.5V, 9V, 13V |
|
Vmax (CE) |
±75V |
|
Vmax (UL) |
±100V |
|
Current Range |
5mA maximum at 120V |
|
Input Impedance |
>10 ohms (within -10V to +12V range), 25kΩ (outside range) |
|
Cin |
100pF (Input Filter Off), 1000pF (Input Filter On) |
|
Counter Speed (DC Inputs) |
0 Hz to 50 kHz |
|
Counter Speed (AC Inputs) |
0 Hz to 50 kHz |
|
Input Frequency (DC Inputs) |
1 Hz to 50 kHz |
|
Input Frequency (AC Inputs) |
1 Hz to 50 kHz |
|
Counter Enable Input (VIL) |
1.0V maximum |
|
Counter Enable Input (VIH) |
3.5V minimum |
|
Counter Enable Input (Vmax) |
75V |
|
Input Impedance |
25kΩ |
|
Input Filter |
Digital Filter (50 kHz Default), Digital Filter (30 kHz), Analog Filter (15 kHz) |
|
Min Pulse Time (DC mode) |
8 µs |
|
Enable/Disable Setup Time |
20 µs |
|
Channel Update Time |
4.00-5.6 ms per channel |
|
Accuracy (Count Mode) |
±1 Count |
|
Accuracy (Rate Mode - Instant) |
±1% at 50 kHz, 0.001% at 1 Hz |
|
Accuracy (Rate Mode - Average) |
±1 Hz |
|
Maximum Count Value (Low Range) |
-32,768 to +32,767 |
|
Maximum Count Value (High Range) |
-8,388,608 to +8,388,607 |
|
Fault Detection |
Over and under range status bits |
|
Data Format (Counter Mode) |
Max Binary Value: -8,388,608 to +8,388,607 |
|
Data Format (Rate Mode) |
Max Binary Value: -32,768 to +32,767 |
|
Isolation (Channel to Rack) |
1000 VDC Continuous Optical and magnetic |
|
Isolation (Channel to Channel) |
0 VDC |
|
Input Protection |
Max input voltage ±100 VDC, 150 VAC peak-to-peak |
|
Max Input Current |
±5 mA at 100 VDC |
_
__ Power Requirements
|
Model |
Internal Rack +5V |
Internal Rack +24V |
|---|---|---|
|
CTR4 |
17.5 mA |
75 mA |
|
CTR8 |
225 mA |
125 mA |
_
__ Physical Specifications
|
Specification |
Description |
|---|---|
|
LED Indicators |
Module Status LED (indicates power-up self-test status), Channel Status LEDs (4 for CTR4, 8 for CTR8) |
|
Terminal Block |
24-pin removable connector |
|
Wire Size |
12 AWG to 28 AWG |
|
Torque |
0.5 Nm (4.5 lb.-in) |
_
__ Environmental Specifications
|
Specification |
Description |
|---|---|
|
Operating Temperature |
-0ºC to 60ºC (32ºF to 140ºF) |
|
Storage/Non-Operating Temperature |
-40ºC to 85ºC (-40ºF to 185ºF) |
|
Operating Humidity |
5% to 95%, non-condensing |
_
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