Replacing The Electronic Module - Siemens SINAMICS G115D Operating Instructions Manual

Corrective maintenance
9.3 Replacing the spare parts
9.3.2

Replacing the Electronic Module

Electric shock as a result of a residual charge in power components
After the power supply has been switched off, it takes up to 5 minutes until the capacitors in
the converter have discharged so that the residual charge is at a non-hazardous level.
Therefore, touching the converter immediately after powering off can result in electric
shock due to residual charge in the power components.
• Check the voltage at the converter connections before you replace the Electronic
Precondition
• You have backed up the settings of the converter on an external storage medium.
• The new Electronic Module must have the same frame size and the same or higher power
rating as those of the Electronic Module that is necessary for replacement.
Procedure
1. Switch off all power supplies (line supply and external 24 V power supply) to the converter.
2. Release the retaining screws (6 x M4) for the Electronic Module by using a 3 mm allen key,
and then remove the module.
Note: If you cannot easily remove the Electronic Module, use a flat-bit screwdriver to lift
one corner and remove the module.
3. Install the new Electronic Module and tighten it with a tightening torque of 2.5 Nm (22.1 lbf.in).
Note: For G115D wall-mounted converter FSB/FSC, you need to remove the fan unit from
the old Electronic Module, and then to reinstall the fan unit on the new Electronic Module.
344
WARNING
Module.
Converter → Memory card (Page 307)
Converter → PG/PC (Page 311)
Replacing the fan unit (Page 346)
Operating Instructions, 12/2020, FW V4.7 SP13, A5E48681219B-002
SINAMICS G115D distributed drive