Toshiba TOSVERT VF-MB1, Instruction Manual

Page: 173 / 350

E6581697
F-53
6
Title Function Adjustment range Default setting
f342 
Load portion torque input selection
0: Disabled, 1: VIA, 2: VIB
3: VIC, 4:
f343
0
f343 
Hoisting torque bias input (valid
only when f342 = 4 )
-250- +250 (%) 100
f344 
Lowering torque bias multiplier 0-100 (%) 100
f345 
Brake release time 0.00-10.00 (s) 0.05
f346 
Creeping frequency
f240 -20.0 (Hz)
3.0
f347 
Creeping time 2
0.00-10.00 (s)
0.10
f348 
Braking time learning function
0:Disabled
1: Learning (0 after adjustment)
0
■
Starting procedure
At the run command, the inverter makes the motor produce the torque specified with parameter f343 . As soon
as a torque output command is issued, a brake release request signal is put out through the brake output terminal.
Upon expiration of the brake release time set with
f345
, the motor starts to accelerate.
■
Stopping procedure
At the stop command, the operation frequency is decreased to the creep frequency set with parameter
f346
,
and put out the braking request after the creep time 1 set with f340 . And then, the creep frequency is
maintained for the creep time set with f347 . While the creep frequency is maintained, the brake release signal
is put out through the braking signal output terminal to apply the brake.
Output frequency
[Hz]
Torque

Braking signal
RUN command
Time [s]
Torque control Speed control


Braking request
Brake release request
Issue of torque command
Creepinjg frequency

Starting frequency

Braking operation

Note 1) Do not change the RUN/STOP and the forward/reverse signal during creep operation.
Set the interlock circuit not to change the above switching.