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Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
737
Maintenance and servicing
11
11.1
Chapter content
This section provides information on the following:
●
Maintenance and servicing procedures that have to be carried out on a regular basis to
ensure the availability of the cabinet units
●
Replacing device components when the unit is serviced
●
Forming the DC link capacitors
●
Upgrading the cabinet unit firmware
●
Loading new operator panel firmware from the PC
WARNING
Not observing fundamental safety instructions and residual risks
Failure to observe the basic safety instructions and residual risks in Chapter 1 can lead to
accidents resulting in serious injury or death.
•
Comply with the basic safety instructions.
•
Take into account residual risks when assessing risks.
DANGER
Electric shock due to the residual charge of the DC link capacitors
Because of the DC link capacitors, a hazardous voltage is present for up to 5 minutes after
the power supply has been switched off.
Contact with live parts can result in death or serious injury.
•
Only open the device after 5 minutes have elapsed.
•
Measure the voltage before starting work on the DCP and DCN DC link terminals.
DANGER
Electric shock from external supply voltages
When an external supply voltage for individual options (L50 / L55) is connected or an
external 115 V AC auxiliary supply is used, dangerous voltages are still present on the
components even when the mains switch is open.
Contact with live parts can result in death or serious injury.
•
Switch off external supply voltages and external 115 V AC auxiliary supply before
opening the device.
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