Mitsubishi FR-S500 Instruction Manual download pdf (Page 118)

109

.11 Auxiliary Function Parameters

.11.1 Slip compensation

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

speed constant.

Parameter Name

Factory

Setting

Range

Remarks

95 Rated motor slip - - -

0 to 50%,

- - -

Slip compensation time

constant

0.5s 0.01 to 10s

Constant-output region slip

compensation selection

- - - 0, - - -

Setting is enabled when

Pr. 30 = "1"

Synchronous speed at base frequency - rated speed

Rated slip =

Synchronous speed at base frequency

×100[%]

Parameter Setting Function

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

0, - - - Slip compensation is not made.

96 0.01 to 10s Used to set the slip compensation response time. (*)

Slip compensation is not made in the constant output

range (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<50Hz>, set the maximum frequency to

slightly higher than 60Hz<50Hz>.

In the factory setting status, it is clamped at 60Hz<50Hz>.

.11.2 Automatic torque boost selection

You can choose automatic torque boost control.

Automatic torque boost control

Not only gives the motor the optimum excitation but also provides high torque

even in a low speed range.

Parameter Name

Factory

Setting

Range

Remarks

Automatic torque boost

selection (motor capacity)

- - -

0.1 to 3.7kW,

- - -

Setting is enabled when

Pr. 30 = "1"

1 2 ... 113 114 115 116 117 118 119 120 121 122 123 ... 190 191

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Mitsubishi FR-S500 Instruction Manual Page 118

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