4-149
07- 07 DC Injection Braking Level
Range 【0~100】%
07- 08 DC Injection Braking time
Range 【0.00~100.00】Sec
07- 16 DC injection braking time at start
Range 【0.00~100.00】Sec
Set parameter 07-06, 07-08 and 07-16 for DC injection braking related function.
When inverter executes speed search function, DC injection braking function should be
disabled.
To enable DC injection braking during a start operation set the DC injection braking current
(07-07) and the DC injection braking time (07-16) at start to a value greater than 0. DC injection
braking at start can be used to prevent “wind milling effect” in fan applications.
To enable DC injection braking during a stop operation set the DC injection braking current
(07-07) and the DC injection braking time at stop (07-08) to a value greater than 0.
When parameter 07-16 is set to 0 sec (DC injection braking off). the inverter will start from the
minimum output frequency duration of DC injection braking during a stop operation. DC
injection braking at stop is disabled when parameter 07-08 is set to 0 sec. If output frequency is
less than 07-06, injection braking function will be enabled. Inverter output will be cut off and
then DC injection braking is started.
During stop operation: If the DC braking start frequency < minimum output frequency (01-08),
DC braking is active when the output frequency reaches the minimum output frequency level.
DC injection braking level can be set by parameter 07-07 in acceleration and deceleration, DC
injection current can be part of output rated current. (Suppose rated current of inverter is
100%)
Increasing the DC braking current (07-07) can reduce the motor stop time.
DC braking operation can be controlled via any one of the multi-function input terminals(03-00
to 05) function 33. Refer to figure 4.3.57 for DC braking operation.
07- 34 Start short-circuit braking time
Range 【0.00~100.00】Sec
07- 35 Stop Short-circuit braking time
Range 【0.00~100.00】Sec
07- 36 Short-circuit braking current limited
Range 【0.0~200.0】%
PMSLV is available for short-circuit braking. Short-circuit braking is the way to switch IGBT to
produce braking torque. 07-06, 07-34 and 07-36 can adjust the braking process.
If 07-35=0, Inverter start from the minimum frequency.
The value of 07-36 is depend on differential motor rated current.
03-00~03-07=65 can control Short-circuit braking.
07- 09 Stop Mode Selection
Range
【0】：Deceleration to stop
【1】：Coast to stop
【2】：DC braking to stop
【3】：Coast to stop with timer
When a stop command is issued the inverter stops according to the stop mode selected. There are
four types of stop modes.
Note：PM motor only can select “deceleration to stop mode” and “coast to stop mode”.
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