G) Control Parameters; Manual Torque Boost - Mitsubishi Electric FR-CS84-012 Instruction Manual

5.12

(G) Control parameters

Purpose
To set the starting torque manually
To set the motor constant
To perform energy saving operation
To use a special motor
To adjust the motor braking torque
To coast the motor to a stop
To avoid overvoltage fault due to
regenerative driving by automatic
adjustment of output frequency
To decrease the deceleration time of the
motor
To secure the low-speed torque by
compensating the slip of the motor

5.12.1 Manual torque boost

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.
Pr. Name
0
Torque boost
G000
*1 The Initial value for the FR-CS84-022 or lower and FR-CS82S-042 or lower.
*2 The Initial value for the FR-CS84-036 to FR-CS84-080, FR-CS82S-070, FR-CS82S-100.
*3 The Initial value for the FR-CS84-120 and the FR-CS84-160.
*4 The Initial value for the FR-CS84-230 and the FR-CS84-295.
 Starting torque adjustment
• Assuming
Pr.19 Base frequency voltage
• Perform the adjustment of the parameter little by little (approximately 0.5%), and confirm the status of the motor each time.
The motor may overheat when the value is set too high. Do not use more than 10% as a guideline.
Manual torque boost
Base frequency, base frequency
voltage
Energy saving operation
Adjustable 3 points V/F
DC injection brake
Selection of motor stop method
Regeneration avoidance function
Increased magnetic excitation
deceleration
Slip compensation
Initial value Setting range
*1
6%
*2
4%
0 to 30%
*3
3%
*4
2%
is 100%, set the output voltage at 0 Hz to
100％
Output
voltage
Setting
Pr.0
range
Output
0
frequency
(Hz)
Parameter to set
P.G000 Pr.0
P.G001, P.G002 Pr.3, Pr.19
P.G030 Pr.60
P.C100, P.G040 Pr.71, Pr.100 to
to P.G045 Pr.105
P.G100 to P.G103 Pr.10 to Pr.12
P.G106 Pr.250
P.G120, P.G121, Pr.882, Pr.883,
P.G123, P.G124, Pr.885, Pr.886,
P.G125 Pr.665
P.G130 to P.G132 Pr.660 to Pr.662
P.G203 to P.G205 Pr.245 to Pr.247
Description
Set the output voltage at 0 Hz in %.
in percentage.
Pr.0
Base
frequency
Refer to
page
193
194
195
195
197
198
199
200
202
193
5. PARAMETERS
5.12 (G) Control parameters
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