C-138 Parameter Reference
AC30 series Variable Speed Drive
PMAC SVC Start Time
0477
Parameters::Motor Control::PMAC SVC
0.500
0.000 to 1000.000
s
ALWAYS
This parameter is used in conjunction with the PMAC SVC Open Loop Strt parameter. It selects the duration of Step 1 in the startup
procedure used for starting motors:
The value should be set up relatively to the motor inertia + load inertia.
PMAC SVC Start Cur
0478
Setup::Motor Control::SVC PMAC
Parameters::Motor Control::PMAC SVC
10.0
0.0 to 600.0
%
ALWAYS
This parameter is used in conjunction with the PMAC SVC Open Loop Strt parameter. It selects the current level during the startup
procedure used for starting motors.
The percentage value is a percentage of the nominal motor current (PMAC Rated Current of the PMAC Motor Data functions).
The default value of 10% is considered appropriate for most applications with light load, very low friction and low acceleration.
The value should be adapted to the starting conditions.
PMAC SVC Start Speed
0479
Same as PNO 478
5
0 to 200
%
ALWAYS
This parameter is used in conjunction with the PMAC SVC Open Loop Strt parameter. It selects the speed setpoint at which the
speed control is switched from an open loop mode to a closed loop mode during the startup procedure used for starting motors.
The percentage value is a percentage of the maximum application speed (100% Speed in RPM of the Scale Setpoint functions). It
should be set to an equivalent of 5% of the PMAC Max Speed of PMAC Motor Data function.
In open loop mode, the system is not controlled in speed mode. It must only be used to ‘start’ the motor under heavy conditions, or to
transitorily reach the zero speed or crossing the zero speed setpoint. It is not intended to be used to control accurately a motion.
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