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Slip Compensation - Mitsubishi Electric FR-CS84-012 Instruction Manual

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5.12.9 Slip compensation

The slip of the motor is estimated from the inverter output current to maintain the rotation of the motor constant.
Pr.
245
Rated slip
G203
246
Slip compensation time
G204
constant
247
Constant-output range slip
G205
compensation selection
• Calculate the rated motor slip and set the value in
Slip compensation is not performed when
Synchronized speed at the time of base frequency - rated rotation speed
Rated slip =
NOTE
• When the slip compensation is performed, the output frequency may become larger than the set frequency. Set Pr.1 Maximum
frequency higher than the set frequency.
• Slip compensation will be disabled in the following conditions:
Stall prevention (OLC, OLV) operation, regeneration avoidance operation, auto tuning
Parameters referred to
Pr.1 Maximum frequency
page 194
Pr.3 Base frequency
202
5. PARAMETERS
5.12 (G) Control parameters
Name
Initial value
9999
0.5 s
9999
Pr.245
Synchronized speed at the time of base frequency
page 117
Setting
range
0.01 to 50%
Set the rated motor slip.
0, 9999
No slip compensation
Set the response time of the slip compensation. Reducing the
0.01 to 10 s
value improves the response, but the regenerative overvoltage
(E.OV[]) error is more likely to occur with a larger load inertia.
No slip compensation in the constant output range (frequency
0
range higher than the frequency set in Pr.3).
9999
Slip compensation is performed in the constant power range.
to enable slip compensation.
Pr.245
= "0 or 9999".
Description
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