Parker 10G-46-0600-BF

9-32 Function Parameters
AC10 Inverter
9.6 Auxiliary Functions
F600 DC Braking Function Selection
Setting range:
0: Disabled
1: Braking before starting
2: Braking during stopping
3: Braking during starting
and stopping
Mfr’s value: 0
F601 Initial Frequency for DC Braking (Hz)
Setting range: 0.20～5.00
Mfr’s value: 1.00
F602 DC Braking efficiency before Starting
Setting range: 0～100
Mfr’s value: 10
F603 DC Braking efficiency During Stop
F604 Duration of Braking Before Starting (s)
Setting range: 0.0～10.0
Mfr’s value: 0.5
F605 Duration of Braking During Stopping (s)
When F600=0, DC braking function is disabled.
When F600=1, braking before starting is
valid. After the right starting signal is input,
inverter starts DC braking. After braking is
finished, inverter will run from the initial
frequency.
In some applications, such as fan, motor is
running at a low speed or in a reverse
status, if inverter starts immediately, OC
malfunction will occur. Adopting “braking
before starting” will ensure that the fan
stays in a static state before starting to
avoid this malfunction.
Figure 9-11 DC Braking
During braking before starting, if “stop” signal is given, inverter will stop by deceleration time.
When F600=2, DC braking during stopping is selected. After output frequency is lower than the
initial frequency for DC braking (F601), DC braking will stop the motor immediately
During the process of braking during stopping, if “start” signal is given, DC braking will be
finished and inverter will start.
If “stop” signal is given during the process of braking during stopping, inverter will have no
response and DC braking during stopping still goes on.
Parameters related to “DC Braking”:
a) F601: Initial frequency of DC-braking. DC braking will start to work as inverter’s output
frequency is lower than this value.
b) F604: Braking duration before starting. The length of time for DC braking before inverter
starts
c) F605: Braking duration when stopping. The length of time for DC braking while inverter
stops.
Note: Excessive DC braking can damage an AC motor. At low speeds a motor without forced
air cooling (like a TEBC motor would) does not have sufficient self-cooling, and may be easily
over-heated. Do not set DC braking voltage (F602, F603) too high or set DC braking time
(F604, F605) too long. DC braking is not recommended in an application where there will be
more than 4 stops per hour.
DC braking, as shown in Figure 9-11.
F400 F401
Hz
F604
F605
F403
Corresponding Frequency (Hz)
F605
F467
t
t
S
t