Yes
Is the I3 input
permanently at
high level?
Shut down the control and switch off the machine.
Yes
No
Does the error
message EMERGENCY STOP
defective reappear?
Disconnect and secure the original wires.
Insert a bridge between the Control-is-ready
input and output (X41/34 and X42/4).
Ensure same potential of the power supply.
-> See Caution at the end of this flow chart.
Find the reason (e.g. relay
no longer opens) and correct
the error. (Use the circuit
diagram of the machine tool.)
Probably the MC is defective.
-> Replace the MC
No
Switch on the machine and confirm
the Power interrupted message.
The fall times of mechanical switching elements
(relays, safety contactors, etc.) are too long,
or electronic switching elements triggered by
the Control-is-ready output are defective.
Use the circuit diagram of the machine tool.
Error message EMERGENCY STOP defective
or EMERGENCY STOP wiring defective
Measure the voltage at the Control-is-ready
(I3 = X42/4).
Switch on the main switch of the machine,
confirm the Power interrupted message;
do not yet press the Control ON switch!
inverter can result in compensating currents.
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