Parker ac890 - Page 482

Programming D-86
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
Parameter Descriptions
●
BACK EMF
PREF: 134.13
Default: 85.6
Range: 0.0 to 8192.0 V
Set the motor’s Back EMF phase to phase, rms value
(Ke, Volts rms per 1000 rpm)
On a standard PMAC motor the following equation may be used to check that the BACK EMF valu
e is approximately correct:
BACK EMF * MAX SPEED < AC Input voltage
●
R
PREF: 134.14
Default: 3.63
Range: 0.00 to 50.00
Ω
Set the motor’s resistance, between phases at 25 °C.
This parameter is used within the current loop.
●
L
PREF: 134.17
Default: 24
.299
Range: 0.000 to 1000.000 mH
Set the motor’s inductance at maximum current.
This parameter is used within the current loop and is related to the overall
proportional gain.
PHASE
PREF: 134.18
Default: 0.00
Range: 0.00 to 90.000 degrees
Set the moto
r’s phase shift advance at permanent current. If this parameter is unknown, value must be set to 0.
The current setpoint I is separated into
two current setpoints Iq and Id, obeying the following rule :