Checking The Isolating Clearances; Checking Hoisting Solenoids And Security Bolts; Checking The Plug Connections; Checking The Cable And Screw Terminals - Siemens SINAMICS GM150 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.
9.4.3.6

Checking the capacitor release (option N20)

Check the following settings:
● T950
● K950
● K951
SINAMICS GM150 6SL3815-2LN41-4AA2
Operating Instructions 04/2017
(Page 210).
Primary tapping: 400 V + 15%
Secondary side: jumpers 31 – 32 and 33 – 34
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
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
203