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The following markings have the function:
• Use of proven components
• Suitable for the intended use
• The occurrence of a fault can result in the loss of the safety function.
The probability of a fault occurring is reduced as far as possible by the use of forced contacts. The
use of a single circuit in conjunction with undervoltage release achieves compliance with safety
category 1 to EN 954-1.
Note
This has not been officially certified in Germany.
Connecting
Firstly, the contacts of the EMERGENCY STOP button are integrated into the circuit breaker
control circuit. Secondly, the remaining NC contact is connected to the terminal block.
EMERGENCY STOP button
=.DB-S1001:31-32
Max. connectable cross-section: 4 mm² (AWG 10)
Activation of the circuit breakers is described in the section entitled "Connecting the circuit
breakers".
8.4.4
Protection function of ground fault detection
The entire power unit is isolated. An insulation fault alone will not normally impair operation.
However, in the event of such a fault, the voltage of the other two phases increases with respect
to ground. In the medium term, this rise in voltage can result in damage. An additional error can
cause a short-circuit.
Danger when operating with ground fault
The type and location of the fault cannot be established just from a ground fault error message.
For example, the glow discharge in the machine's coil end may be the cause of the fault
message. In the event of continued operation, serious aftereffects (all the way up to electric
arcs) are possible. This can result in death, serious injury or material damage.
• If a ground fault is experienced during converter operation, the converter must be switched
• The plant operating company is responsible for the consequences, if the converter is still
3rd Party LCI Control Upgrade
Operating Instructions, 02/2022, A5E31872818
WARNING
off immediately. Then identify and eliminate the source of the ground fault.
operated after a ground fault has been detected. Carry out a risk analysis.
8.4 Monitoring and protection functions
Where connected
EMERGENCY STOP customer
Operation
=.DB-X05:9, 10
105
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