Wiring the Flow Computer
Power Input Connector
The FC-5000 flow computer’s power input is internally fused and protected from
common line noise by a filtering network�
TB1 - Power Input Terminal
Connector Pin
Function
Oeference Pin
1
Voltage IN (+)
1
2
Shield (Chassis GND)
2
3
Voltage IN (–)
3
4
Ground
4
Pulse Transmitter Connector (Pulse Input)
The FC-5000 flow computer is designed to accept pulses from open collector
transistors or dry contact closure transmitters�
Before making any connections:
• Always use shielded wire to protect the signal line from external noise (ground
shield to terminal #3)�
• Make sure the signal lines are not bundled with or touching power lines�
Frequency
0�5 Hz to 3�5 kHz
Voltage
–0�3…3�6V DC
Impedance
Pullup to 12V DC
VDC Current
± 50 mA short circuit current
Oesponse
100
m
s min pulse (high speed) 3�5 ms min pulse (low speed)
TB5 - Single Channel Pulse Input Terminal
Connector Pin
Function
Oeference Pin
1
Exci
19
2
Sensor Input
20
3
Sensor Common (GND)
21
4
Shield
22
Page 13
July 2016
CTL-UM-01723-EN-01
