Automatic Restart And Flying Restart; Automatic Restart - Siemens SINAMICS G110D Operating Instructions Manual

Secure loads held by the brake!
Since this procedure cancels the "Brake active" signal which, in turn, causes the brake to
be forced open, the user must ensure that, even when the motor has been powered-down,
all loads held by the brake are secured before the signal is canceled.
Table 6- 41
Parameter
P0003 = 3
P1218 = 1
6.9.3

Automatic restart and flying restart

6.9.3.1

Automatic restart

Restart after a power failure and/or faults within a few seconds
The automatic restart function is primarily used when the inverter is operated as a stand-
alone device.
The "automatic restart" function is used to restart the drive automatically once the power has
been restored following a power failure. All faults are acknowledged automatically and the
drive is switched on again.
Line undervoltage or power failure
The power supply for the Control Unit (electronics) of the SINAMICS G110D Inverter is
provided by the 24 V supply of the AS-i network.
The term "line undervoltage" describes a situation in which the line voltage fails momentarily
and is then restored. The power supply of the motor is interrupted, but the AS-i network
power supply is still maintained.
The term "power failure" describes a situation in which the power fails for a longer period and
the AS-i network power supply is interrupted.
Important secondary condition
An ON command must be present prior to the power failure and when the power returns the
presence of the previous ON command is detected and the "automatic restart" function will
ensure that the Inverter runs the motor.
It is recommended that a digital input is used as the ON command source.
SINAMICS G110D
Operating Instructions, 2009-05-15, A5E02385577A AB
WARNING
Parameter to force open a motor holding brake
Description
Enable expert access to parameters
Forcibly open the motor holding brake
Functions
6.9 Technological functions
121