Line Contactor Control - Siemens SINAMICS G120 Operating Instructions Manual
Low voltage converters, chassis and wall/panel mounted devices with cu230p-2 control units
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Also See for SINAMICS G120:
- List manual (1256 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
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Advanced commissioning
6.7 Application-specific functions
6.7.7
Line contactor control
The line contactor control is used to switch on and switch off the power supply voltage for the
inverter via a digital output of the inverter. Precondition is an external 24 V power supply for
the inverter CU.
You can monitor when the line contactor opens and closes using the feedback signal contact
of the contactor.
The function has the advantage that you only switch on the line voltage for the inverter briefly
before the motor must be switched on. If the motor is switched off, after an adjustable wait
time, the line voltage for the inverter is switched off again.
This means that you reduce the inverter losses for the times when the motor is not
operational.
Activate line contactor control
You activate the line contactor control by interconnecting the signal source of a digital output
of the inverter (depending on the particular inverter, p0730 ... p0741) with the signal to
control the line contactor (r0863.1). For example: p0732 = 863.1.
Line contactor control without monitoring - factory setting:
In the factory setting, the function for a line contactor without feedback signal contact is set.
The feedback signal is linked with the signal to control the line contactor: p0860 = 863.1.
For an OFF1, the line contactor opens after the delay time setting in p0867.
Line contactor control with monitoring:
If you use a line contactor with feedback signal contact, activate the feedback signal by
linking the parameter for the feedback signal - p0860 -with the inverted signal of a digital
input: p0860 = 723.x.
If monitoring is active, when switching off or switching on, message F07300 is output, if, after
the time set in p0861 no feedback signal is received via r723.x.
In addition for inverters with STO: Sequence control via p0869
Using p0869, you set whether the line contactor immediately opens for an STO signal, or
only after the time set in p0867 has expired.
264
Converter with CU230P-2 Control Units
Operating Instructions, 04/2015, FW V4.7 SP3, A5E34257946B AB
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