Yaskawa VS-626 MC5 - Manual (Page 161)

7.3 Common Functions
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Slip compensation limit
C3-03
E1-06 E1-04
Output frequency
E1-04
E1-06  C3-03
E1-06: Base frequency
E1-04: Maximum output frequency
Fig 7.12 Slip Compensation Limit
Slip Compensation Selection During Regeneration: C3-04
User
Change
during Setting Factory
Valid Access Levels User
Constant
Number
Name
during
Opera-
tion
Setting
Range Unit
Factory
Setting Open Loop
Vector
Flux Vector
C3-04
Slip compensation
selection during regen-
eration
0 1 -- 0 A
D Settings
Setting Contents
0 Slip compensation disabled during regeneration
1 Slip compensation enabled during regeneration
D Constant C3-04 enables or disables slip compensation during regeneration.
D The amount of regeneration is momentarily increased when this function is used, so some control op-
tion (e.g., Braking resistor, Braking Resistor Unit, Braking Unit) may be required.
J Torque Compensation Function: C4-01, C4-02
The torque compensation function detects increases in the motor load, and increases the output torque to
compensate.
Torque Compensation Gain: C4-01
User
Change
during Setting Factory
Valid Access Levels User
Constant
Number
Name
during
Opera-
tion
Setting
Range Unit
Factory
Setting Open Loop
Vector Flux Vector
C4-01
Torque compensation
gain
0.00 to 2.50
Mul-
tiple
1.00 B
D This constant can be changed during operation, but normally no adjustments are required.
D Set the torque compensation gain so that the output current at low-speed rotation does not exceed 50%
of the Inverter’s rated output current.
D Do not adjust the setting of this constant for open-loop vector control.
Torque Compensation Time Constant: C4-02
User
Change
during Setting Factory
Valid Access Levels User
Constant
Number
Name
during
Opera-
tion
Setting
Range Unit
Factory
Setting Open Loop
Vector Flux Vector
C4-02
Torque compensation
time constant
0 to 10000 ms 20 A
D The torque compensation time constant does not normally need to be adjusted, but make adjustments
in the following cases:
x If the motor generates excessive oscillation, raise the setting.
x If motor responsiveness is low, lower the setting.
7