Toshiba TOSVERT VF-MB1 User Manual

E6581697
F-25
6
6.8.2 Motor shaft fixing control
f254 : Motor shaft fixing control
 Function
This function is used to prevent the motor from running unexpectedly because its shaft is not restrained
or to preheat the motor.
[Parameter setting]
Title Function Adjustment range Default setting
f254
Motor shaft fixing control 0: Disabled, 1: Enabled 0
If the motor shaft fixing control
f254 is set to 1, half the braking force set with f251 (DC braking rate)
will be applied to the motor to continue DC braking even after the completion of ordinary DC braking. To stop
motor shaft fixing control, turn off the standby command (ST signal).
DC injection braking start frequency

LED display
Time [s]
Output frequency [Hz]
Operation signal (F-CC)
ON
OFF
Output current [A]
0
0
Set frequency
Operation standby signal (ST-CC)
ON
OFF

2
“

” is displayed.
“” is displayed.

Note1: About the same motor shaft fixing control can be exercised by entering a DC braking command from external
contacts.
Note2: If a power failure occurs during motor shaft fixing control and the motor starts to coast, motor shaft
fixing control will be canceled.
Also, if the inverter trips during motor shaft fixing control and is restored to working order by the retry
function, motor shaft fixing control will be canceled.
Note 3: During shaft fixing control, the carrier frequency is the setting of parameter
f249.

Toshiba TOSVERT VF-MB1 Specifications

General

Brand	Toshiba
Model	TOSVERT VF-MB1
Category	Inverter
Language	English