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
Содержание SINAMICS G120X
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