Siemens SINAMICS GM150

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
(Page 210).
● Check the cabling for defects.
● Replace any defective parts immediately.
9.4.3.6 Checking the capacitor release (option N20)
Check the following settings:
● T950
Primary tapping: 400 V + 15%
Secondary side: jumpers 31 – 32 and 33 – 34
● K950
Measuring-circuit voltage at IN2 (no-load voltage of the C – tripping unit: approx. 160 V)
Switch positions: UNDERLOAD, NO MEMORY (the switches are located at the side )
T1 = 0.1 s
Ue = 30% / release at 90 V
Hysteresis = 5% / enable at 105 V
● K951
Measuring-circuit voltage at IN2
Switch positions: UNDERLOAD, NO MEMORY (the switches are located at the side )
T1 = 0.1 s
Ue = 30% / release at 90 V
Hysteresis = 5% / enable at 105 V
Maintenance
9.4 Preventive maintenance
SINAMICS GM150 6SL3815-2LN41-4AA2
Operating Instructions 04/2017 203