Toshiba VF-S15 Instruction Manual page 180

[Parameter setting]
f304
f305
f308
f309
f626 Over-voltage stall protection level
● To use this inverter in applications that create a continuously regenerative status (such as downward
movement of a lift, a press or a tension control machine), or in applications that require deceleration
stopping of a machine with a significant load inertial moment, increase the dynamic braking resistor
capacity according to the operation rate required.
● To connect an external dynamic braking resistor, select one with a resultant resistance value greater than
the minimum allowable resistance value. Be sure to set the appropriate operation rate in f308 and
f309 to ensure overload protection.
● When using a braking resistor with no thermal fuse, connect and use a thermal relay as a control circuit for
cutting the power off.
6
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Title Function
Dynamic braking selection
Overvoltage limit operation
Dynamic braking resistance
Dynamic braking resistor capacity
Setting
1
1
Proper value
Proper value
136 (%) (240V class)
141 (%) (500V class)
F-68
E6581611