Corrective maintenance
9.6 Firmware upgrade and downgrade
SINAMICS G115D distributed drive
Operating Instructions, 12/2020, FW V4.7 SP13, A5E48681219B-002
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9.6.3
Downgrading the firmware
Introduction
When downgrading the firmware, you replace the converter firmware with an older version.
Only update the firmware to an older level if, after replacing a converter, you require the
same firmware in all converters.
Precondition
•
Converter and memory card have different firmware versions.
•
You have the memory card with the firmware for that particular converter.
•
You have backed up the converter settings on the memory card or in a PC, or on the
SINAMICS G120 Smart Access.
Data backup and series commissioning (Page 305)
Function description
The following procedure applies to both the G115D motor-mounted converter and the
G115D wall-mounted converter.
Procedure
1.
Switch off the line voltage to the converter and (if installed) the external 24 V power supply
or the voltage for the digital outputs of the converter.
2.
Wait until all LEDs on the converter are dark.
3.
Insert the memory card with the matching firmware into the converter slot until it latches
into place.
4.
Switch on the power supply of the converter again.