Motor Shaft Fixing Control - Toshiba VF-S15 Instruction Manual

6.12.2 Motor shaft fixing control

f254 : Motor shaft fixing control
 Function
[Parameter setting]
If the motor shaft fixing control f254 is set to 1, half amount of the braking force set with f251 (DC
braking rate) will make the motor continue DC braking even after the completion of ordinary DC braking. To
stop motor shaft fixing control, turn off the standby command (ST signal).
Output frequency [Hz]
DC injection braking start frequency 
Operation signal (F-CC)
Operation standby signal (ST-CC)
As the default setting for ST (Standby) is Always ON, change the following settings:
  (no function)
 Assign 6: ST (Standby) to an open input terminal.
Note1: Nearly the same motor shaft fixing control can be exercised when entering a DC braking command with the
Note2: If a power failure occurs during motor shaft fixing control and the motor starts to coast, motor shaft
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This function is used to preheat the motor or to prevent the motor from running unexpectedly when its
shaft is not restrained.
Title Function
f254 Motor shaft fixing control
Set frequency
0
Output current [A]
0
signal at an input terminal.
fixing control will be canceled.
Also, if the inverter trips during motor shaft fixing control and is restored to working order by the retry
Adjustment range
0: Disabled, 1: Enabled

F-47
E6581611
Default setting
0
LED display
"" is displayed.
"" is displayed.
Time [s]

2
ON
OFF
ON
OFF
6