Replace Control Unit - Siemens SINAMICS G120 Operating Instructions Manual

Corrective maintenance
8.1 Replacing inverter components
Special issue relating to communication via PROFINET: Device replacement without removable data
storage medium
The inverter supports the PROFINET functionality, replacing the device without data storage
medium. After replacing the Control Unit, the inverter is automatically assigned its device
name from the IO controller.
Details of the device replacement without removable storage medium can be found in the
PROFINET system description
(http://support.automation.siemens.com/WW/view/en/19292127).
Independent of this, after replacing the inverter, you must transfer the settings of the old
inverter to the new inverter.
Replacing further components
The replacement of further components is described in the hardware installation manual of
the associated Power Module.
8.1.2

Replace Control Unit

Danger to life as a result of a hazardous voltage at the terminals of the Control Unit
230 V AC may be in place on terminals DO 0 and DO 2 of the control unit's relay output
independently of the voltage status of the power module. Touching the contacts may result
in an electrical shock.
Comply with the protective measures before you replace the Control Unit
1. Switch the contacts off-circuit.
2. Secure the power supply against being unintentionally switched on again.
3. Check that the cabinet is de-energized.
Replacing a Control Unit with data backup on a memory card
If you use a memory card with firmware, after the replacement, you obtain a precise copy
(firmware and settings) of the replaced Control Unit.
Precondition
You have a memory card with the actual settings of the Control unit to be replaced.
Procedure
To replace the Control Unit, proceed as follows:
1. Disconnect the line voltage to the Power Module and (if installed) the external 24 V
supply or the voltage for the digital outputs of the Control Unit.
2. Remove the signal cables from the Control Unit.
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DANGER
Converter with CU230P-2 Control Units
Operating Instructions, 04/2015, FW V4.7 SP3, A5E34257946B AB