Slip Compensation (Pr. 245 To Pr. 247) - Mitsubishi Electric FR-E 500 Instruction Manual

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

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
Number
245
246
247
<Setting>
Synchronous speed at base frequency - rated speed
Rated slip =
Parameter
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.
Factory
Setting Range
Setting
9999 0 to 50%, 9999
0.5 0.01 to 10 s
9999 0, 9999
Synchronous speed at base frequency
Setting
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).
9999 Slip compensation is made in the constant output range.
9999: No slip compensation
9999: Slip compensation made
Function
152
PARAMETERS
Remarks
×100[%]