SIMATIC – ET 200pro motor starter
GWA 4NEB 950 5661-02 DS 04
10-35
10.12 Emergency start
Description
'Emergency start' enables a recovery despite an internal switch-off command.
Emergency start is possible if
• 'SWITCH-ON command' for the motor is present. The motor is switched on
even if the cause of the trip is still present.
• 'SWITCH-ON command' for the brake output is set. This is switched on by
the emergency start (parameter 'Brake release delay on starting' is taken into
account).
Emergency start is not possible if
• the 'SWITCH-OFF command' is present
• 'Device error' has occurred
Signaling bit:'Self-test error', 'Switching element defective'
• the self-protection mechanism of the motor starter has been activated
signaling bit: ’Switching element overload’
• the switched/non-switched supply voltage DC 24 V-S / DC 24 V-NS is missing
signaling bit:'Supply voltage switching element missing',
'Electronics supply voltage too low'
• the blocking protection has been activated
signaling bit: ’Motor block tripping’
• process image error present
signaling bit: ’Process image error’
Control options for emergency start
–Commands 'Emergency start ON', 'Emergency start OFF'
– Parameters 'Input n – action' –> 'Emergency start' parameterized
– Bit DO 0.4 'Emergency start' in the process image.
Commands
The emergency start function can be controlled using the following commands:
10.12.1 Signal
'Emergency start' delivers the following signal:
Commands
Emergency start ON
Emergency start OFF
Table 10-22: Emergency start – commands
Signal Description
Emergency start active This is present as long as the emergency
start function is active, even if the motor
and brake output are switched off.
Table 10-23: Emergency start – signal
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