FCI ST100A Series, Installation, Operation And Maintenance Manual

Page: 40 / 170

INSTALLATION ST100A Series Flow Meter
32 Fluid Components International LLC
Source/Sink Output Connections
The source/sink outputs are available from the auxiliary board Phoenix connector J9 terminals J9-1 (source), J9-2 (com.), and J9-3 (sink).
Refer to Figure 28 .
Wire the terminals as required for your device (using source or sink output as appropriate) as shown in Figure 29 and Figure 30 below. The
source/sink outputs provide a pulse (frequency) output. Observe the output power limits listed below.
● Source Output: 22 ±2 VDC output, 25 mA maximum (supplied by the flow meter)
● Sink Output: 40 VDC maximum, 150 mA maximum (external, user-supplied power source)
Figure 29 – Source Output
J9
(T
yp
ica
l)
External
Device
(Counter, etc.)
24 VDC
25 mA max.
GND
USER WIRING
FLOW METER SIDE USER SIDE
SOURCE
Alternate wiring,
see note below.
Note: Use voltage divider resistor
network if flow meter source voltage
(24 VDC) exceeds your device input.
1
2
C01418-1-1
CURRENT FLOW
Figure 30 – Sink Output
(Typical)
External 24-40 VDC
Power Supply
150 mA max.
External Device
(Counter, etc.)
COM
SINK
USER WIRING
J9
FLOW METER SIDE USER SIDE
2
3
C01417-1-1
CURRENT FLOW
–
+