Running The Inverter In Motor Staging Mode - Siemens SINAMICS V20 Operating Instructions Manual

Commissioning via the built-in BOP
5.6 Function commissioning
Parameter Function
P2947 Wobble signal decrement step
P2948 Wobble signal increment step
P2949 Wobble signal pulse width [%]
5.6.3.13

Running the inverter in motor staging mode

Functionality
Motor staging allows the control of up to 2 additional staged pumps or fans, based on a PID
control system. The complete system consists of one pump controlled by the inverter and up
to 2 further pumps / fans controlled from contactors or motor starters. The contactors or
motor starter are controlled by digital outputs from the inverter.
The diagram below shows a typical pumping system.
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Setting
This parameter sets the value for decrement step at the end
of the positive signal period.
Range: 0.000 to 1.000 (factory default: 0.000)
This parameter sets the value for the increment step at the
end of the negative signal period.
Range: 0.000 to 1.000 (factory default: 0.000)
This parameter sets the relative widths of the rising and falling
pulses.
Range: 0 to 100 (factory default: 50)
Operating Instructions, 11/2016, A5E34559884-006
SINAMICS V20 Inverter