Toshiba TOSVERT VF-MB1, Instruction Manual

Page: 174 / 350

E6581697
F-54
6
Ex.) When using the RY-RC terminal as the brake signal output terminal
Title Function Adjustment range Example of setting
f130  Output terminal function selection 1A (RY-RC) 0-255 68 (Brake release)
■
Learning function [ f348 ]
Using this function, rough settings can be made automatically and also parameters f345 , f346 and f347
can be set automatically.
After the learning function is set,
f342 will be set automatically to 4 and f343 to 100 . If necessary, fine
adjust the parameter setting manually.
[Learning operation]
Set parameter
f348
to
1
and enter an operation command to start learning. (The frequency and “
tun
” are
displayed alternately.)
Parameter
f343 (torque) is set, the brake release timing is calculated, and parameter f345 (release time) is
set based on the calculation result. f346 is set automatically according to the motor constant calculated. At the
stop of operation, f347 (creep time) are set.
Note 2: Learning should be performed under light-load conditions.
Note 3: If a counterweight is provided, a learning error may occur. If so, make an adjustment manually.
Note 4: Brake learning (
f348 = 1
) should be carried out for normal rotation if
f341
is set to
1
(forward
winding), or for reverse rotation if
f341
is set to
2
(reverse winding).
[Notabilia for braking function]
Note 5: For the braking functions, the pre-excitation time is automatically determined by the inverter from motor-
related constants.
When the VFMB1S-2022PL is used in combination with a Toshiba 4P-2.2kW-60Hz-200V standard motor,
the pre-excitation time is approximately 0.1 to 0.2 seconds.
Depending on the motor used, the pre-excitation time may be prolonged.
Note 6: When using braking functions, set parameter
au2
(automatic torque boost) to
2
(vector c auto-
tuning) or set motor-related parameters
f401
to
f413 .
Note 7: When the inverter is confirmed operation by braking functions, connect and run the combinated motor.
As this function calculate the timing of brake by detecting output current, calculating error is occurred
without connecting the motor.
■
Torque bias function
Using this function, the load can be started smoothly,
by the motor produces enough torque for load portion
before the brake is released,
[Selection of external signals]

VIA-CC – 0~10V (0~250%)
1
VIB-CC – 0~±10V (-250~250%)
2
VIC-CC – 4(0)~20mA (0~250%) 
Voltage signals
Current signals
Additional torque
(fixed direction)
Reverse run
Forward run
Tension torque bias
as additional torque