Siemens SINAMICS S120 Function Manual page 204

Extended functions
Flying restart (vector)
Warning
!
When the flying restart (p1200) function is active, the drive may still be accelerated
by the detection current despite the fact that it is at standstill and the setpoint is 0.
For this reason, entering the area around the drive when it is in this condition can
cause death, serious injury, or considerable material damage.
Note
With induction motors, the demagnetization time must elapse before the flying
restart function is activated to allow the voltage at the motor terminals to decrease,
otherwise high equalizing currents can occur when the pulses are enabled due to
a phase short-circuit.
Overview of key parameters (see List Manual)
S p1082 Maximum speed
S p1200 Flying restart operating mode
-- 0: Flying restart inactive
-- 1: Flying restart is always active (start in the setpoint direction).
-- 2: Flying restart is active after: power-on, fault, OFF2 (start in the setpoint
direction).
-- 3: Flying restart is active after: fault, OFF2. (start in the setpoint direction).
-- 4: Flying restart is always active Start in setpoint direction only.
-- 5: Flying restart is active after: power-on, fault, OFF2 Start in setpoint
direction only.
-- 6: Flying restart is active after: fault, OFF2, start in setpoint direction only.
S p1202 Flying restart search current
S p1203 Flying restart search rate factor
S r1204 CO/BO: Flying restart, V/f control status
S r1205 Flying restart, vector control status
4-204
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition
J