Slip Compensation (Pr. 245 To Pr. 247) - Mitsubishi Electric FR-E520 Instruction Manual

4.2.46 Slip compensation (Pr. 245 to Pr. 247)

Pr. 245 "rated motor slip"
Pr. 246 "slip compensation response time"
Pr. 247 "constant-output region slip compensation selection"
The inverter output current may be used to assume motor slip to keep the motor speed
constant.
Parameter Factory
Number Setting
245
246
247
<Setting>
Synchronous speed at base frequency - rated speed
Rated slip =
Parameter
Setting
Number
0 to 50%
245
246 0.01 to 10 s
247
Note: When this value is made smaller, response will be faster.
However, as load inertia is greater, a regenerative overvoltage (OVT) error is
more liable to occur.
Setting Range
9999 0 to 50%, 9999
0.5 0.01 to 10 s
9999 0, 9999
Synchronous speed at base frequency
Used to set the rated motor slip.
9999 Slip compensation is not made.
Used to set the slip compensation response time. (Note)
Slip compensation is not made in the constant output
0
range (frequency range above the frequency set in Pr. 3).
Slip compensation is made in the constant output region
when Pr.245 ≠ "9999"and slip compensation is selected.
9999
Slip compensation is not made when Pr.245 = "9999"
9999: No slip compensation
9999: Slip compensation is made in
the constant output region when
Pr.245 ≠ "9999"and slip
compensation is selected.
Function
165
PARAMETERS
Remarks
×100[%]
4