Depending on the parameter p29521, the DO configuration about multi-pump control is as
follows:
Parameters
p29521 = 0
p29521 = 1
p29521 = 2
p29521 = 3
p29521 = 4
p29521 = 5
p29521 = 6
p0730
52.3
52.3
52.3
52.3
r29529.0
r29529.0
r29529.0
p0731
52.2
52.2
52.2
r29529.0
r29529.1
r29529.1
r29529.1
p0732
52.0
52.0
r29529.0
r29529.1
r29529.2
r29529.2
r29529.2
p0733
52.7
r29529.0
r29529.1
r29529.2
r29529.3
r29529.3
r29529.3
p0734
--
--
--
--
--
r29529.4
r29529.4
p0735
--
--
--
--
--
--
r29529.5
Note
When using the multi-pump control for the first time, make sure that the circuit breakers are
disconnected until the relevant parameters are configured.
Note
Multi-pump control motor quantity not matched
● When you configure the multi-pump control function, make sure that the motor quantity set
in p29521 matches with the quantity of digital outputs (mapped in r29529). Otherwise, there
will be fault F52966 and alarm A07929.
● When using the multi-pump control function for more than two pumps, check r0719 = 1 to
ensure that the I/O Extension Module is recognized after installing the module.
Note
When the multi-pump control is enabled (p29520=1), the values of p1274 and p1264 are set to
0 automatically and you can modify the values if required.
Note
Motor current peaks when switching the motor from converter operation to line operation
If the motor is switched from converter operation to the line supply, this can result in a high
surge current > 10 x I_rated in the motor, depending on the random phase shift between
converter and line voltage.
Further information
Interaction with other functions:
● When activating the essential service mode, if the multi-pump control is active, the motor
connection status remains unchanged and the converter-controlled motor switches the
speed setpoint to "ESM setpoint source".
● When activating the hibernation mode, if the multi-pump control is active, the hibernation
mode only works when there is only one operating motor and the conditions for hibernation
are satisfied.
Advanced commissioning
6.4 Pump control
SINAMICS G120X converter
302
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC