Emotron AB 01-3694-01r2 Main Features 49
Stopping an additional pump
This figure shows a possible sequence with all levels and
functions involved when an additional pump is stopped by
means of the pump control relays. The stopping of the sec-
ond pump is controlled by one of the relay outputs. The
relay in this example stops the pump directly on line. Of
course other start/stop equipment like a soft starter could be
controlled by the relay output.
Fig. 53 Time sequence stopping an additional pump
(NG_50-PC-20_1)
Set view ref. [310]
Feedback Flow
time
Master pump
Max speed
Speed
Transition Speed Stop
Min speed
Lower band
Upper band
Stop delay [39A] Settle time stop [39F]
Stop ramp depends
on start method
Stop command
Speed
2nd pump
time
time
[39G]
[343]
[341]
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