Parker AC890PX Series, Инженерный справочник

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D-82
A p p e n d i x D : P r o g r a m m i n g
AC890PX AC Drive
Parameter Descriptions
On a PMAC motor, the ratio between the BACK EMF and the KT is always around 60:
BACK EMF (Volts rms/1000rpm) ≈ 60 * KT (Npm/Arms)
IFMB
PREF: 134.22 Default: 0.0 Range: -100.0000 to
100.0000
A/Nm
3
Set the motor’s parameters to compute current setpoint from torque setpoint.
IFMB torque KT torque current * ] [ / ] [ ] [
3
+ =
If IFMB is unknown, the value must be set to 0.
INERTIA PREF: 134.23 Default: 0.0010 Range: 0.0000 to 100.0000
Set the motor’s inertia. The units for this parameter are set by the INERTIA SCALE parameter.
INERTIA SCALE PREF: 134.24 Default: 0 Range: See below
Set the motor’s inertia scale.
Enumerated Value : Inertia Scale
0 : Kg*m²
1 : Kg*cm²
2 : g*m²
● STAND CURRENT PREF: 134.26 Default: 10.6 Range: 0.00 to 1024.00 A
Permanent current at standstill: if not known, set to the same value as PERM CURRENT at low speed
● THERMAL TIME CST PREF: 134.27 Default: 224.80 Range: 0.00 to 10000.00 s
Copper Thermal Time constant(s). If not known, set to 300s.
CUR LOOP BWDTH PREF: 134.28 Default: 600 Range: 100 to 1500 Hz
This parameter defines the current loop bandwidth. The value will automatically generate the proportional gain of the PI corrector of the current loop.
The proportional gain is calculated based on the "L" motor parameter.
Modifying the CUR LOOP BWDTH value could induce instability. Please contact our application engineer if you need to change it.