O r . p r, D h i n – Toshiba Tosvert VF-A5 User Manual

Page 82

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O r . P r

(Protection Parameters)

d t j F

d b 5 L

DC injection braking settings ©

d h I n

d b

/«->1

Motor shaft stationary control

This function is effective when the motor shaft has stopped and is not to be rotated, or when preheating the

motor.

When

d b I n

d b C

is set to I to activate motor shaft stationary control, DB can be continued at half the

setting value after normal DB operation. This condition can be maintained as long as ST-CC is not

opened, emergency stop is not engaged, or the power is not turned OFF. To stop this function, disengage the

operating command by one of the methods previously mentioned, and DB will stop.

Output frequency

* Approximately the same control is possible with the external contact input DC injection braking ON/OFF

selection. (Refer to

Cr-.5fc

frequency is less than

setting. However, if

* I

(*: 0 to fO )•) DC injection braking will activate if the output

d b F I

and ST-CC is shorted, and will continue regardless of the | dbfcr-1

d b C

is set to 60% or higher, depending on the DC injection time, the inverter’s

electronic thermal overload protection may activate (when using a standard motor).

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