Siemens NXPLUS C Installation And Operating Instructions Manual page 181

Unlocking the
interlocking solenoids
Activating the
undervoltage release
802-9081.9 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • Revision 11
If the interlock at the control gate is equipped with an interlocking solenoid and if there is no
auxiliary voltage available, the control gate is blocked. The interlocking can be bypassed as
follows:
Fig. 148: Expanding rivet at the control gate
Internal arcing hazard and explosion hazard
Can cause death, serious injury or property damage.
If the interlock is bypassed, switching operations are possible that can cause an arcing fault.
➭ Only bypass the interlock when the feeder is in a no load condition and not carrying
current.
Push the control gate from center position to right position:
➭ Remove left-hand expanding rivet ① . Insert the screwdriver into the left-hand opening and
push the interlocking solenoid back. Push the control gate to the right. The left-hand
interlocking solenoid is released again, blocking further movements.
Push the control gate from center position to left position:
➭ Remove right-hand expanding rivet ② . Insert the screwdriver into the right-hand opening
and push the interlocking solenoid back. Push the control gate to the left. The right-hand
interlocking solenoid is released again, blocking further movements.
✔ After work completion, insert the expanding rivet again.
Blocked undervoltage release
Can cause property damage.
The undervoltage release will not function if its retaining bolt is inserted in position A. After test
operation without auxiliary voltage, the undervoltage release must be activated.
➭ Remove the retaining bolt from position A and insert it in position B.
The undervoltage releases mounted in the circuit-breaker must be activated for operation.
The circuit-breaker operating mechanism is located in the central part of the panel behind the
ON/OFF pushbuttons.
➭ Remove the front cover of the circuit-breaker.
➭ To activate the undervoltage release, shift the retaining bolt of the striker from position A to
position B.
➭ Refit the front cover.
✔ The circuit-breaker operating mechanism is now ready for operation with undervoltage
release.
CAUTION
NOTICE
Installation
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