E6581442
E-36
5
Motor speed
Time
Synchronized
acceleration/dece
leration signal
(S1 terminal)
Inverter 1
Inverter 2
ON
Input voltage
*1
*1:Even with
=
,
,
functions are used, a motor may coast according to load conditions.
In this case, try to adjust the parameter "
" and "
".
5.19
Dynamic (regenerative) braking - For abrupt motor stop
: Dynamic braking selection
: Dynamic braking resistance
: Allowable continuous braking resistance
: Braking resistance overload time
[Parameter setting]
Title
Function
Adjustment range
Default setting
Dynamic
braking
selection
:Disabled
:Enabled (bracking resistance overload
detect)
:Enabled (bracking resistance overload
not detect)
Dynamic
braking
resistance
~
Ω
According to model
Refer to page K-48.
Allowable continuous braking
resistance
~
kW
According to model
Refer to page K-48.
Braking resistance overload
time
~
sec.
* Protection levels defined by
(Refer to Section 6.14.2).
Note 1: The time set using
is the time for which the resistor sustains an overload. (Enter the time elapsed
before the inverter trips if a load 10 times as large as the allowable continuous braking resistance specified
using
is applied.) There is no need to change resistance settings recommended by Toshiba (except
DGP resistance setting).
Note 2: If the parameter
is set to
or
(regenerative braking selected), the inverter will be set automatically so
as to deal with the regenerative energy from the motor by means of a resistor, without taking any action to
limit overcurrent. (The same function as
=
)
Note 3: For inverters with ratings of 400V-200kW and above, set
to
, because separate dynamic braking units
are not included as standard equipment.
• 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.
Содержание TOSVERT VF-AS1 Series
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