Toshiba Tosvert VF-A5 Uživatelský manuál Strana 82

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Or. Pr
(Protection Parameters)
d tj F db5L
DC injection braking settings ©
d h In
I db /«->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
db In
dbC
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
Ik * I (*: 0 to fO )•) DC injection braking will activate if the output
dbF I and ST-CC is shorted, and will continue regardless of the | dbfcr-1
dbC 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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