Mitsubishi Electronics FR-S500 Auxiliary parameters, Slip compensation Pr , Pr , Pr, Rated slip =

Auxiliary parameters

2.11 Auxiliary parameters

2.11.1 Slip compensation (Pr. 95 , Pr. 96 , Pr. 97 )

The inverter output current may be used to assume motor slip to keep the motor speed constant.

Parameter	Name	Factory	Setting Range	Remarks
		Setting
95	Rated motor slip	- - -	0 to 50%, - - -
96	Slip compensation time	0.5s	0.01 to 10s	Setting is enabled
	constant
				when Pr. 30 = "1"
97	Constant-output region slip	- - -	0, - - -
	compensation selection
<Setting>

Rated slip =	Synchronous speed at base frequency - rated speed		×100[%]
	Synchronous speed at base frequency
Parameter	Setting	Function

950.01 to 50% Used to set the rated motor slip.

0, - - - Slip compensation is not made.

960.01 to 10s Used to set the slip compensation response time. (*)

	0	Slip compensation is not made in the constant output range
97		(frequency range above the frequency set in Pr. 3).

-- - Slip compensation is made in the constant output range.

*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.

REMARKS

When making slip compensation at 60Hz, set the maximum frequency (Pr. 1) to slightly higher than 60Hz.

In the factory setting status, it is clamped at 60Hz.

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