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Corrective maintenance
16.1
Replacing a converter
16.1.1
Replacing a converter
Overview
You may only replace a converter with another converter if certain requirements are adhered to.
Requirement
The following requirements apply to a replacement:
• The new converter has the same or more recent firmware version than that of the converter
being replaced.
• The two converters must also satisfy one of the following conditions:
– The new and replaced converters have the same power rating.
– The new converter has a different power rating to the converter it replaced but the same
Fire or electric shock after tripping of overcurrent protection devices
If an overcurrent protection device is tripped, the converter may be defective. A defective
converter can cause a fire or electric shock.
• Have the converter and the overcurrent protection device checked by a specialist.
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 min. until the capacitors in the
converter have discharged so that the residual charge is at a non-hazardous level.
• Check the voltage at the converter connections, before removing the connecting cables.
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
frame size.
In this case, the rated power of the converter and motor power must not differ too much.
The following values are permissible for the quotients (rated motor power)/(rated
converter power): 0.25 ... 1.5
WARNING
WARNING
16
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