Description
3.3 Accessories
Installation and Operating Instructions SINAMICS G180
40
Operating Instructions, 02/2019, 4BS0751-007
General information about electronic shutdown
Using the electronic shutdown concept of the inverter, a system without main contactor can
be shut down. This also applies to motors operating in Hazardous Zone 1. In the case of a
fault, the inverter electronically interrupts the power supply to the motor.
NOTICE
Malfunctions
If the inverter is used in safety-relevant applications with visible transport damage,
malfunctions and damage to property can occur.
•
Do not use inverters with visible transport damage.
•
Peripheral boards 2/3/4 with safety-related inputs and an ATEX motor temperature
monitoring must always be replaced using certified, original parts. Only replace parts
after prior consultation with the factory.
•
Use the "Safe torque off" function of the inverter for induction and synchronous motors.
If two additional faults occur in the power section, for synchronous motors, this can
result in residual rotation. The residual rotation angle can be maximum 180°. Calculate
the residual rotation angle from 360° / number of poles n. Take into account residual
rotation in your design. This does not apply to induction motors.
WARNING
Shutdown only when safety circuits are opened
The inverter is only shut down with the "Safe torque off" function as long as shutdown is
initiated by opening the appropriate safety circuits. If the safety circuits are reclosed, safe
shutdown is no longer given; this applies, even if the inverter does not immediately restart.
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