Automatic Restart (Vector, Servo, Infeed) - Siemens SINAMICS S120 Function Manual

Basic functions

6.7 Automatic restart (vector, servo, infeed)

Overview of key parameters (see SINAMICS S List Manual)
● r0069 Phase current, actual value
● r0089 Actual phase voltage
● p1820 Direction of rotation reversal of the output phases (vector)
● p1821 Reversal of direction
● p2507 LR absolute encoder adjustment status
6.7 Automatic restart (vector, servo, infeed)
Description
The automatic restart function is used to automatically restart the drive/drive group when the
power is restored after a power failure. In this case, all of the faults present are automatically
acknowledged and the drive is powered-up again. This function is not only restricted to line
supply faults; it can also be used to automatically acknowledge faults and to restart the
motor after any fault trips. In order to allow the drive to be powered-up while the motor shaft
is still rotating, the "flying restart" function should be activated using p1200.
CAUTION
Automatic restart functions in the vector, servo mode and for infeeds with closed-loop
infeed control. After the line supply voltage is connected, Smart Line Modules 5kW/10kW
automatically power themselves up.
If p1210 is set to the value > 1, the Line Modules / motors can start automatically once the
line supply has been reestablished. This is especially critical, if, after longer line supply
failures, motors come to a standstill (zero speed) and it is incorrectly assumed that they
have been powered-down. For this reason, entering the area around the drive when it is in
this condition can cause death, serious injury, or considerable material damage.
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WARNING
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Drive Functions