Maintenance 10.98
6SE7087-6KP50 Siemens AG
9-2 Operating Instructions SIMOVERT MASTERDRIVES
9.1 Replacing the fan
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 on and off by
electronic control according to the heat sink temperature.
The fan is designed for a service life of L
10
≥
35,000 hours and an
ambient temperature of T
u
= 45 °C. It must be exchanged in good time
to ensure the availability of the unit.
9.1.1 Replacing the fan in units up to 90 mm wide
To replace the fan, the inverter has to be disconnected from the supply
and removed.
After removing the X20 connector which is protected against polarity
reversal and carefully bending up the fastening clips the fan can be
taken out.
When installing the new fan, attention has to be paid to the correct
direction of the air flow. The air must flow into the inside of the unit (see
directional arrow on the fan housing).
9.1.2 Replacing the fan in units 135 mm wide
♦
Before you exchange the fan, the converter must be disconnected
from the power supply and removed.
♦
Undo the four fan mounting screws and take out the fan.
♦
Disconnect the leads on the fan.
♦
Fit the new fan in the reverse order.
♦
Make sure that the arrow indicating the direction of air flow points to
the inside of the unit.
Make sure that the fan leads are connected the right way round.
Otherwise the fan will not operate!
Removal
Installation
Removal
Fitting the new fan
NOTE
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