Checking The Isolating Clearances; Checking Hoisting Solenoids And Security Bolts; Checking The Plug Connections; Checking The Cable And Screw Terminals - Siemens SINAMICS SM150 Operating And Installation Instructions

9.4.3.2

Checking the isolating clearances

● Slight, dry, non-conducting contamination is permitted.
● Remove contamination caused by dust in conjunction with high humidity.
9.4.3.3

Checking hoisting solenoids and security bolts

● Check the hoisting solenoids and security bolts at regular intervals.
● Replace defective hoisting solenoids and security bolts before (re)commissioning.
9.4.3.4

Checking the plug connections.

Regularly check the plug connections to ensure they are seated correctly and the contacts are
not corroded.
Note
The fiber-optic cables for the gating boards must be properly inserted in the connectors.
9.4.3.5

Checking the cable and screw terminals

● Check the cable and screw terminals regularly to ensure that they are secure.
● Tighten the screws if necessary. When doing this, comply with the specified torques
● Check the cabling for defects.
● Replace any defective parts immediately.
9.5

Maintenance

9.5.1

Fan maintenance

Temperature-controlled rotating fan
If the converter is equipped with a temperature-controlled fan, the fan can run on even if the
power section is switched off.
You can be injured if you touch the fan.
Wait until the fan has shut down.
SINAMICS SM150 6SL3845-7NN46-7AA0
Operating Instructions 04/2017
(Page 170).
CAUTION
Maintenance
9.5 Maintenance
165