YASKAWA GA700 Technical Manual page 649

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C3-02: Slip Compensation Delay Time
No.
Name
(Hex.)
C3-02 Slip Compensation
Delay Time
(0210)
RUN
Adjustment may help in the following situations:
• Increase this setting when speed is unstable.
• Decrease the setting when the slip compensation response is too slow.
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C3-03: Slip Compensation Limit
No.
Name
(Hex.)
C3-03 Slip Compensation
Limit
(0211)
This parameter is used when the motor speed is low despite increasing the setting value of C3-01 [Slip
Compensation Gain]. This parameter becomes effective when the slip reaches the upper limit of slip
compensation. Adjust this parameter while measuring the motor speed after increasing the value set to C3-03. Set
this parameter so that the combined value of the frequency reference and the slip compensation limit does not
exceed the machine's allowable range.
The slip compensation limit is constant in the constant torque range (frequency reference ≤ E1-06 [Base
Frequency]). In the constant power range the frequency reference ≥ E1-06 increases based on C3-03 and the
output frequency as shown in the following figure.
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C3-04: Slip Compensation @ Regen Select
No.
Name
(Hex.)
C3-04 Slip Compensation @
Regen Select
(0212)
RUN
When slip compensation during regeneration has been activated and a regenerative load is applied, it might be
necessary to use a dynamic braking option (braking resistor or braking resistor unit).
0 : Disabled
Slip compensation is not provided.
Depending on the load and operation status (regenerative operation), the actual motor speed may be higher or
lower than the frequency reference.
1 : Enabled (6 Hz and above)
Slip compensation is enabled during regenerative operation. It will not be active at output frequencies of 6 Hz or
less.
2 : Enabled (compensation provided wherever possible)
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
V/f CL-V/f OLV CLV AOLV
Adjusts the slip compensation delay time when speed is unstable or when
the slip compensation response is too slow. There is normally no need to
change this parameter from the default value.
V/f CL-V/f OLV CLV AOLV
Sets the upper limit for the slip compensation function as a percentage of
the motor rated slip.
Figure 11.48 Slip Compensation Limit
V/f CL-V/f OLV CLV AOLV
Enables or disables slip compensation during regenerative operation.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
11.4 C: Tuning
Default
(Range)
Determined by A1-02
(0 - 10000 ms)
Default
(Range)
200%
(0 - 250%)
Default
(Range)
0
(0 - 2)
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