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Functions
7.10 Setting Relays
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 respond to any of the alarm conditions or
data functions included on the Relay Option List.
Table 7- 8
Relay Option List
Not Used
Power Off
High Flow
Low Flow
Flow Alarm
Fault Alarm
Spacing
Empty
Aeration
Interface
Reverse Flow
BatchTot
Pos Total
Neg Total
Fltwarn
Soft Fault
130
Not Active
Power Off alarm occurs when power fails.
Flow rate exceeds high flow set point.
Flow rate falls below low flow set point.
Flow rate exceeds or falls below flow set points.
System loses receive signal (all paths in fault).
Sensor spacing needs adjusting.
Empty pipe alarm.
Aeration percentage exceeds alarm set point.
Liquid interface setpoint exceeded.
Flow is in negative direction.
Batch/Sample total advances.
Positive total volume advances 1 digit.
Negative total volume advances 1 digit.
System fault warning occurs when 1 or more paths are in
fault (multi-path units only).
Fault condition - memory mode active.
FUS1010 IP65 NEMA 4X & IP66 NEMA 7
Operating Instructions, 01/2013, A5E02951520-AC
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