Checking The Capacitor Release; Checking The Cable And Screw Terminals; Checking The Plug Connections - Siemens SINAMICS SM150 6SL3815-7NP41-0AA1 Operating Instructions & Installation Instructions

9.4.4.4

Checking the capacitor release

Check the following settings:
● T950
● K950
● K951
The wiring to the circuit-breaker must be checked according to the circuit diagram.
9.4.4.5

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.
9.4.4.6

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.
SINAMICS SM150 6SL3815-7NP41-0AA1
Operating Instructions Rev.201910281301 EXAMPLE
Primary tapping: 400 V + 15%
Secondary side: jumpers 32 – 33
Measuring-circuit voltage at IN3 (no-load voltage of the C release unit: approx. 320 V)
Switch positions: UNDERLOAD, NO MEMORY (the switches are located at the side).
T1 = 0.1 s
Ue = 30% / release at 180 V
Hysteresis = 5% / enable at 210 V
Measuring-circuit voltage at IN2
Switch positions: UNDERLOAD, NO MEMORY (the switches are located at the side).
T1 = 0.1 s
Ue = 60% / release at 180 V
Hysteresis = 5% / enable at 202 V
(Page 162).
Maintenance
9.4 Inspection and maintenance
159