Magnetek DSD 412, Техническое руководство

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DRIVE SETUP AND ADJUSTMENT
49
Adjustment Function
Descriptions
Function # 1
Current Limit
Units: %
Range: 0.0 – 300.0
Default: 250.
This entry sets the positive and negative
current limit for the drive. Set as a percent of
Rated Armature Amps (Function 3).
Function # 2
Use
Self-Tune
Units: Logic
Range: 0 (Off) – 1 (On)
Default: 0 (OFF)
This entry selects the source of critical
numeric value adjustments for tuning the
motor armature current regulator. Values for
motor resistance, R, motor inductance, L, and
motor field time constant L/R may come from
either manually entered values or
automatically determined by a self-tune
measurement. With function 2 set to 0, OFF,
the settings of functions 4, 6, and 51 will be
used. With function 2 set to 1, ON, the values
determined by self-tuning and held at display
locations 613, 614, and 615 will be
automatically used.
Note: Setting this function to a 1 will
not
change the values stored in function 4, 6, or
51.
Function # 3
Rated Arm I
Units: ADC
Range: 2.0 - 1250.0
Default: 50.0
This entry is specified by the motor nameplate
or “Rated Run Current” amps, for the motor
used with the drive.
Function # 4
Armature Ohms
Units: OHM
Range: 0.001 – 5.000
Default: 0.1
The total armature circuit resistance. The
value to be entered is best measured by
monitoring MEASURED_R, F613 after the
SELF-TUNE function has been completed.
This value is used to calculate armature
current regulator gains and to calculate motor
CEMF.
Function # 6
Armature Inductance
Units: HNY
Range: 0.001 – 1.0000
Default: 0.01
This is the value of the motor circuit
inductance. If a ripple filter is being used, the
value entered should include effects of the
ripple filter. The value to be entered is best
measured by monitoring F614 - Measured
Motor Circuit Inductance, after the SELF-
TUNE function has been completed. This
value is used to calculate armature current
regulator gains.
Function # 7
Rated Arm V
Units: VDC
Range: 150. – 550.
Default: 240
This entry sets the motor nameplate full load,
full speed voltage required by the motor used
with the drive. It should agree with the motor
nameplate VFL
Function # 8
I Reg Crossover
Units: RAD
Range: 100. – 1000.
Default: 500.
This entry sets the bandwidth of the current
regulator in radians. The nominal setting for
this entry for most cases would be 250
radians. The responsiveness of the armature
current regulator will increase as this number
increases. If this number is too large, the
motor current may fluctuate. If this number is
too small, the motor response may become
sluggish.
Function # 9
Nom AC Voltage
Units: VAC
Range: 150. – 525.
Default: 230
This entry sets the nominal AC line to line
voltage applied to the drive from the
secondary of the isolation transformer. This
value should agree with the transformer
nameplate value as adjusted by any +/-
primary taps, within ±5 volts. This value sets
the Low Line and Excessive CEMF detection
thresholds.