Mitsubishi Electric 800 Series Instruction Manual (Function page 469

17
(G) Control Parameters
Purpose
To set the starting torque manually
To set the motor constant
To select the V/F pattern matching the
application
To perform energy saving operation
To compensate the motor slip amount when
replacing an SF-JR motor with an SF-PR
motor
To adjust the motor braking torque
To coast the motor to a stop
To use the regeneration unit to increase the
motor braking torque
To avoid overvoltage fault due to
regenerative driving by automatic
adjustment of output frequency
To decrease the deceleration time of the
motor
To select the control method
To secure the low-speed torque by
compensating the slip of the motor
To select the torque characteristic
To adjust the speed control gain
To adjust the torque control gain
To stabilize speed feedback signal
To change excitation ratio
To improve the motor trackability for the
speed command changes
To make starting torque start-up faster
To make the motor speed constant by the
encoder
To perform frequency control appropriate for
load torque
To suppress the machine resonance
To adjust the speed gain for Advanced
magnetic flux vector control
17.1
Manual torque boost
V/F V/F V/F
Voltage drop in the low-frequency range can be compensated, improving reduction of the motor torque in the low-speed range.
• Motor torque in the low-frequency range can be adjusted according to the load, increasing the motor torque at the start up.
• By using the RT signal, it is possible to switch between 2 types of torque boost.
Pr.
0
Torque boost
G000
46
Second torque boost
G010
468
17. (G) Control Parameters
17.1 Manual torque boost
Manual torque boost
Base frequency, base frequency
voltage
Load pattern selection
Energy saving operation
SF-PR slip amount adjustment
mode
DC injection brake, zero speed
control, servo lock, and magnetic
flux decay output shutoff
Selection of motor stop method
Regenerative brake selection
Regeneration avoidance function
Increased magnetic excitation
deceleration
Control method selection
Slip compensation
Constant output range torque
characteristic selection
Speed control gain
Torque control gain
Speed detection filter
Excitation ratio
Speed feed forward control,
model adaptive speed control
Torque bias
Encoder feedback control
Droop control
Speed smoothing control
Speed control gain
Name Initial value
*1
2% to 6%
9999
Parameter to set
P.G000, P.G010
P.G001, P.G002,
P.G011
P.G003
P.G030
P.G060, P.G061
P.G100 to P.G103,
P.G110, P.B003
P.G106
P.E300, P.G107,
P.T720
P.G120, P.G121,
P.G123 to P.G125
P.G130 to P.G132 Pr.660 to Pr.662
P.G200, P.G300
P.G203 to P.G205 Pr.245 to Pr.247
P.G210
P.G211, P.G212,
P.G311, P.G312
P.G213, P.G214,
P.G313, P.G314
P.G215, P.G315
P.G217
P.G220 to P.G224,
P.C114
P.G230 to P.G238 Pr.840 to Pr.848
P.A107, P.C140,
P.C141, P.C148,
P.G240, P.G241
P.G400, P.G401
P.G410, P.G411
P.G932, P.G942
Setting range
0% to 30% Set the output voltage at 0 Hz in %.
0% to 30% Set the torque boost value at when the RT signal is ON.
9999 Without the second torque boost
Refer to
page
Pr.0, Pr.46 468
Pr.3, Pr.19, Pr.47 470
Pr.14 472
Pr.60 474
Pr.673, Pr.674 475
Pr.10 to Pr.12,
Pr.422, Pr.802, 476
Pr.850
Pr.250 482
Pr.17, Pr.30, Pr.70 484
Pr.882, Pr.883,
Pr.885, Pr.886, 489
Pr.665
492
Pr.800, Pr.451 104
494
Pr.803 122,
Pr.820, Pr.821,
129
Pr.830, Pr.831
Pr.824, P.825,
155
Pr.834, P.835
Pr.823, P.833 190
Pr.854 191
Pr.828, Pr.877 to
131
Pr.881
133
Pr.285, Pr.359,
Pr.367 to Pr.369, 495
Pr.376
Pr.286, Pr.287 497
Pr.653, Pr.654 498
Pr.89, Pr.569 110
Description
149