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S61
Emergency stop button
S62
Emergency stop reset button with indicator light
T01
Supply unit
T11
Inverter unit which contains inverter module(s)
T11.x
Inverter module
1)
Relay contact for the push button fault indication signal (for user-defined use). If there is a
fault in a push button circuit, the main monitoring relay opens the relay contact.
2)
Fault signal connection between main monitoring relay and push button monitoring relays
3)
User-defined push buttons
4)
Supply voltage for main contactor/breaker control (user-defined)
5)
Connection to parallel inverter modules (if any)
6)
Main circuit
Step
Operation
Initial status: The drive is in operation and the motor is running.
1
The user pushes the emergency stop button [S61] or a user-defined push button. This activates the
emergency stop function.
2
The emergency stop safety relay [A640] de-energizes XSTO inputs IN1 and IN2 of the inverter control
unit [A41]. This activates the inverter unit Safe torque off function.
The emergency stop safety relay [A640] de-energizes the DIIL input on the supply control unit [A51].
This gives the emergency stop command to the supply unit.
The emergency stop safety relay [A640] de-energizes the safety relay [K640].
The safety relay [K640] opens the main contactor/breaker [Qx], which disconnects the input power from
the supply unit [T01].
The charging contactor [Q4] is opened, if the emergency stop is activated during charging.
3
The emergency stop reset button indicator light [S62] comes on.
4
The motor coasts to a stop.
5
Normal operation resumes after the user:
•releases the emergency stop button [S61] or the user-defined button to the normal (up) position
•pushes the emergency reset button [S62] to reset the emergency stop circuit
•resets the drive (if the drive tripped on a fault)
•makes sure that the drive receives the start signal (depends on the configuration, see the firmware
manual).
Description of option +Q951+Q984 17
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