Parker AC890PX Series, Engineering Reference

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D-80
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
THERM PROTECTION PREF: 134.06 Default: FALSE Range: FALSE / TRUE
Motor’s thermal protection feature.
●
MAX SPEED
PREF: 134.07 Default: 4300 Range: 0 to INT MAX
Set the motor’s maximum mechanical speed (in rpm)
●
MAX CURRENT
PREF: 134.08 Default: 10.60 Range: 0.00 to 1024.00 A
Set the motor’s maximum rms current. This parameter is used to limit the current demand
● PERM CURRENT PREF: 134.09 Default: 4.90 Range: 0.00 to 1024.00 A
Set the motor’s permanent rms current. Permanent current at low speed (in Amp rms) or nominal current.
Refer to MOTOR CURRENT % in the FEEDBACKS function block. A value of 100% = PERM CURRENT.
● PERM TORQUE PREF: 134.10 Default: 6.40 Range: 0.00 to 30000.00 Nm
Set the motor’s permanent torque.
Refer to TORQUE FEEDBACK in the FEEDBACKS function block. A value of 100% = PERM TORQUE.
LOW SPEED VALUE PREF: 134.11 Default: 0 Range: 0 to INT MAX rpm
Set the motor’s low speed value (in rpm) below which the current must be reduced.
If this parameter is unknown, value must be set to 0 rpm.
●
POLES
PREF: 134.12 Default: 10 Range: 0 to 400
Set the number of motor poles, e.g. for a 4 pole motor enter "4".
● 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 value 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.