Maintenance; Replacing The Fan - Siemens SIMOVERT MASTERDRIVES Motion Control Instructions De Service

08.2008
9

Maintenance

DANGER
9.1

Replacing the fan

DANGER
Siemens AG 6SE7087-7JP50
SIMOVERT MASTERDRIVES
SIMOVERT MASTERDRIVES units are operated at high voltages.
All work carried out on or with the equipment must conform to all the
national electrical codes (BGV A3 in Germany).
Maintenance and repair work may only be carried out by properly
qualified personnel and only when the equipment is disconnected from
the power supply.
Only spare parts authorized by the manufacturer may be used.
The prescribed maintenance intervals and also the instructions for
repair and replacement must be complied with.
Hazardous voltages are still present in the drive units up to 5 minutes
after the converter has been powered down due to the DC link
capacitors. Thus, the unit or the DC link terminals must not be worked
on until at least after this delay time.
The power terminals and control terminals can still be at hazardous
voltage levels even when the motor is stationary.
A fan is mounted at the lower section of the inverter for cooling the
power section.
The fan is fed by the 24 V supply voltage and switched in and off by the
device software.
The fan is designed for a service life of L
ambient temperature of
T = 45 °C. It must be exchanged in good time to ensure the availability
u
of the unit.
It may be necessary to disassemble the unit for this purpose.
To replace the fan the converter has to be disconnected from the
supply and removed if necessary.
Operating Instructions
Maintenance
≥ 35,000 hours and an
10
9-1