Magnetek GPD 333, Technical Manual

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36
3.13 AUTOMATIC TORQUE BOOST GAIN
Sets the torque compensa-
tion, in increments of 0.1.
When the motor has the
same capacity as that of the GPD 333, the gain is 1.0. When a
smaller motor is used, the gain should be set to 1.5 (typical).
Except for the most demanding of high torque applications, the
factory setting of this constant will be adequate. The factory
setting is programmed to match the performance characteris-
tics of typical AC motors.
3.14 STALL PREVENTION
automatically adjusts out-
put frequency according to the load so as to continue operation
of the machine without stalling the motor.
Stall Prevention Level
During Accel
Determines the actual
GPD 333 output current
level during an accelerat-
ing condition. Set in
percent of GPD 333
rated output current
(see paragraph 3.8).
Stall Prevention Level
at Set Speed
Determines the actual
output current level of
the GPD 333 while
operating at set speed
(frequency). Also set in
percent of GPD 333
rated output current
(see paragraph 3.8).
Constant
no-29
Range : 0.0 to 3.0
Factory Setting : 1.0
Constant
no-30
Range : 30 to 200 ( % )
Factory Setting : 170
Constant
no-31
Range : 30 to 200 ( % )
Factory Setting : 160
t
t
MOTOR
CURRENT
OUTPUT
FREQ.
Constant
no-30
setting
t
t
MOTOR
CURRENT
OUTPUT
FREQ.
Constant
no-31
setting
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