Functions
7.10 Setting Relays
FUS1010 IP65 NEMA 4X & IP66 NEMA 7
130 Operating Instructions, 01/2013, A5E02951520-AC
7.10 Setting Relays
Relay Functions
Use the [Relay Setup] menu to assign a function to channel relays. The flow meter supports
two types of relay outputs, Alarm Relay and Pulse Relay. Alarm Relay outputs operate in
"fail-safe" mode. The relay(s) are energized under normal conditions - an alarm condition
causes the relay(s) to de-energize until the alarm clears. The Pulse Relay output supports
Totalizer and batch relay functions, with an output pulse width of approximately 200 ms;
maximum activation rate is 2.5 pulses per sec. If Totalizer pulses exceed this rate, excess
pulses are stored in an overflow register. This allows the relay to "catch up" when flow
decreases enough.
Note
Using the <F1> key (Totalizer clear command) also clears all channel Totalizers plus the
overflow register described in the last paragraph.
Relay 1 and 2 Function Assignments
The flow meter, depending upon the model, provides four alarm relays. Please refer to the
Appendix A (Page 181) for wiring details. Relays res
pond to any of the alarm conditions or
data functions included on the Relay Option List.
Table 7- 8 Relay Option List
Not Used Not Active
Power Off Power Off alarm occurs when power fails.
High Flow Flow rate exceeds high flow set point.
Low Flow Flow rate falls below low flow set point.
Flow Alarm Flow rate exceeds or falls below flow set points.
Fault Alarm System loses receive signal (all paths in fault).
Spacing Sensor spacing needs adjusting.
Empty Empty pipe alarm.
Aeration Aeration percentage exceeds alarm set point.
Interface Liquid interface setpoint exceeded.
Reverse Flow Flow is in negative direction.
BatchTot Batch/Sample total advances.
Pos Total Positive total volume advances 1 digit.
Neg Total Negative total volume advances 1 digit.
Fltwarn System fault warning occurs when 1 or more paths are in
fault (multi-path units only).
Soft Fault Fault condition - memory mode active.
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