Number Name Factory setting
p29520 Multi-pump control enable 0
p29521 Multi-pump control motor configuration 0
p29522 Multi-pump control motor selection mode 0
p29523 Multi-pump control switch-in threshold 20%
p29524 Multi-pump control switch-in delay 30 s
p29525 Multi-pump control switch-out delay 30 s
p29526 Multi-pump control overcontrol threshold 25%
p29527 Multi-pump control interlocking time 0 s
p29528 Multi-pump control switch-out speed offset 100 rpm
r29529 BO/CO: Multi-pump control status word -
p29530[0...5] Multi-pump control absolute operating hours 0 h
r29538 Multi-pump control variable-speed motor -
p29546 Multi-pump control deviation threshold 20%
1)
For converters FSA and converters with PROFINET fieldbus, the factory setting for p1080 is 300 rpm.
For more information about the parameters, see Chapter "Parameters (Page 467)".
6.4.1.2 Stop mode
Function description
Two stop modes are available as follows:
● Normal stop: All pumps running in line operation are switched off simultaneously as soon as
the stop command is received. The pump in converter operation stops under the control of
the converter. Normal stop aims to quickly stop all the pumps under emergency situations
such as pipe cracks or leakages.
● Sequence stop: The pumps running in line operation stop one by one in the reverse
sequence in which they are switched on. There is a delay time (p29537) between every
pump stop. The pump in converter operation stops under the control of the converter after
the first pump in line operation is switched off. Sequence stop aims to reduce the water
hammer effect to pipes especially in systems with high power range.
After the OFF command is received, the pumps are switched off in either of the two stop modes:
● With OFF1 command received, the pump stop mode is selected in parameter p29533 as
follows:
– p29533 = 0: normal stop
– p29533 = 1: sequence stop
● With OFF2/OFF3 command received, the pumps are switched off with normal stop.
Advanced commissioning
6.4 Pump control
SINAMICS G120X converter
308 Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
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