1756sc-CTR8

Overview

The 1756sc-CTR8 is an 8-channel Counter/Flowmeter Module for ControlLogix systems, supporting single-ended or quadrature/bidirectional inputs with fast update times.

Input Specifications

• Channels: 8 single-ended or 4 quadrature/bidirectional

• Input Modes: DC counter, AC flowmeter

• Input Voltage Ranges:

• 5 VDC: 3.5–50 VDC

• 12/24 VDC: 9–50 VDC

• AC 50 mVpp: 50 mVpp–50 VAC rms

• AC 200 mVpp: 200 mVpp–50 VAC rms

• Input Frequency: 0–65 kHz

• Minimum Pulse Time: 5.4 μs

• Nominal Input Resistance: > 24 kΩ (voltage dependent)

• Counter Voltage Input (programmable): 5, 12/24 VDC, 50 mV AC, 200 mV AC

Performance

• Count Value Range: 0–16,777,215

• Data Format: Floating Point IEEE 32 bit

• Update Time: <13 ms for all channels

• Power Dissipation: 4.8 W max

• Backplane Current Required: 75 mA @ 24 V max, 230 mA @ 5 V max

• Isolation Voltage: 2550 VDC field wiring-to-backplane for 1 s

Environmental Conditions

• Operating Temperature: 0° to 60°C (32° to 140°F)

• Storage Temperature: -40° to +85°C (-40° to 185°F)

• Relative Humidity: 5 to 95% (non-condensing)

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