Siemens SINAMICS S120 Equipment Manual page 162

Maintenance and servicing
9.4 Replacing components
Preparatory steps
• Disconnect the drive line-up from the power supply.
• Allow unimpeded access.
• Remove the protective cover.
Removal steps
The steps for the removal procedure are numbered in accordance with Fig. 9-7.
1. Disconnect the plugs for the signal cables (2 plugs).
2. Remove the DRIVE-CLiQ cable and connection on –X41 / –X42 (2 plugs).
3. Remove the retaining screws for the slide-in electronics unit (2 screws). The bottom
Caution
When removing the fan, ensure that you do not damage any signal cables.
The Control Interface Board can then be removed from the slide-in electronics unit.
Caution
When removing the ribbon cable connector, make sure that you actuate the locking lever on
the connector very carefully (e.g. with a screwdriver) because otherwise the lock could be
damaged.
Installation
To re-install the fan, carry out the above steps in reverse order.
Caution
The tightening torques specified in Table 9-1 must be observed.
Carefully re-establish the plug connections and ensure that they are secure.
When dealing with connectors with a lock, make sure that the locking lever is securely
engaged once connected.
The screwed connections for the protective covers must only be tightened by hand.
9-18
screw also secures the front fan.
When removing the slide-in electronics unit, you have to disconnect 2 further plugs one
after the other (1 at the top, 1 below) and the PE connection (below).
SINAMICS S120 Equipment Manual, Edition 04/2007, 6SL3097-2AM00-0BP2
Chassis Power Units Liquid Cooled