Dynamic (Regenerative) Braking - For Abrupt Motor Stop - Toshiba TOSVERT VF-AS1 Instruction Manual

5.19

Dynamic (regenerative) braking - For abrupt motor stop

: Dynamic braking selection
: Dynamic braking resistance
: Allowable continuous braking resistance
: Braking resistance overload time
• Function
Dynamic braking is used in the following cases:
1) need to stop the motor quickly.
2) The inverter trips because of an overvoltage (OP) during deceleration.
3) Fluctuation of load condition causes a regenerative power even at a constant speed such as press machine.
[Parameter setting]
Title
Dynamic braking selection
Dynamic braking resistance
Allowable continuous braking
resistance
Braking resistance overload time
* Default settings vary from model dependent. ⇒ Refer to page E-40.
Protection levels defined by
Note 1: The time set using
before the inverter trips if a load 10 times as large as the allowable continuous braking resistance specified
using
DGB resistance setting).
Note 2: If is set to
Note 3: For inverters with ratings of 400V-200kW or more, set
not included as standard equipment.
Function
:Deselect
:Select (bracking resistance overload
: Select (bracking resistance overload not
(Refer to Section 6.14.2).
is the time for which the resistor sustains an overload. (Enter the time elapsed
is applied.) There is no need to change resistance settings recommended by Toshiba (except
or , (Dynamic braking selection enabled), set
E-35
Adjustment range
detect)
detect)
~ Ω
~ kW
~ sec.
(Overvoltage limit operation) to
to , because separate dynamic braking units are
E6581301
Default setting
5
According to model
According to model
.