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

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.
Automatic restart mode (P1210=6)
If parameter P1210 is set to 6, then the Inverter will react to an ON command after a power
failure by clearing all faults and alarms then running the motor. If the Inverter has been
powered-down normally and P1210=6, then when the Inverter is powered-up, it will clear all
faults and alarms, then start running the motor automatically.
SINAMICS G110D
Operating Instructions, 07/2016, FW V3.63, A5E36768472B AB
WARNING
Functions
6.9 Technological functions
141