Spectrum Controls 1746sc-CTR4 - Manual (Page 7)

Overview And Specifications
The 1746sc-CTR4 and the 1746sc-CTR8 are 4 and 8 channel Counter/
Flow Meter modules. The modules are suitable for general purpose
counter and flow meter applications that require a large number of input
channels and high accuracy. The module supports both AC and DC input
signal types. The counter functions include programmable control of the
counter including start, stop, reset, preset control and user defined flags.
The input levels for the counter mode are 5, 12, and 24 volts DC. The
Flow Meter mode is compatible with variable reluctance AC input. This
differential AC input will count AC zero crossing signals from 50 mV to
75 V peak.
Read this chapter to familiarize yourself with your counter module. This
chapter covers:
• General features and benefits
• Detailed specifications
General Features And
Benefits
• 8 Input Channels or 4 Channels of Quadrature Encoders
• 4 External Counter enable inputs
• Input voltage ranges: AC (50mv–75V peak), 5 Vdc, 12 Vdc, 24 Vdc
• Input uency: AC 50 KHz Max, DC 50 KHz Max
• Maximum count value: ±32 K or ±8 M
• Programmable Scaling, K, M, R Factor
• Channel update time of 4 msec/channel
• Rate output mode (Integrer and Floating Point)
• Counter logic level state
• Programmable Counter functions: start/stop/reset/present
• Programmable counter Alarm flags and zero flags
• 3 Selectable filters: 15 KHz, 30 KHz, 50 KHz
• Channel to back Plane isolation of 1000 Vdc
Chapter 1