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05.2005
8
Maintenance
8.1
Replacing the fan
At the bottom of the rectifier unit a fan is mounted for cooling the power
section.
On the 15kW/ 6SE7024-1EP85-0AA0 rectifier unit and the 50kW/
100kW rectifier units the fan runs continuously once the 24 V supply
voltage has been connected.
On the 15kW/ 6SE7024-1EP85-0AA1 rectifier unit it is switched on and
off depending on the unit's temperature.
WARNING
The fan is designed for an operating duration of L
an ambient temperature of Tu = 45 °C.
A replacement fan must be fitted in good time to ensure the availability
of the unit.
Removal
6SE7024-1EP85-0AA0
Installation
Install the new fan in the reverse order.
NOTICE
The air must flow in the direction of the inside of the unit (observe
directional arrow on fan housing)!
Siemens AG
6SE7087-2NP85-0AA0
SIMOVERT MASTERDRIVES
15 kW /
6SE7024-1EP85-0AA1
rectifier unit
Disconnect the rectifier unit from the supply and remove it
Open housing
Withdraw X20
Carefully bend up the
Press out four expansion
fastening lugs
Take out the fan and ventilation grille
Remove the ventilation grille and fix it on the new fan
Operating Instructions
≥ 35 000 hours at
10
15kW /
50 kW / 100 kW
rectifier units
rectifier unit
Withdraw two cables
with flat connector
from the fan
(red = +)
Undo four fastening
rivets
Maintenance
screws
8-1
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