Larsen & Toubro C*2000 Series User Manual page 104

8. Application
8.1 DC brake
 Measures to stop motor through DC brake
Group Code
Function
F 4
Group 1
F 8
F 9
F10
F11
 Function group 1: Select 1 (DC brake to stop) in F4 code
 F8: Initial frequency for DC brake
 F9: Waiting time of inverter before DC brake
 F10: Set as per the rated current of motor (based on H33)
 F11: The time set shall be the time for work of DC braking voltage
The over-voltage or overlong time in DC brake will cause overheat or damage of motor.
Setting F10 or F11 to 0 will disable DC brake.

 Waiting time of DC brake: When load inertia is large or DC
Brake Start Frequency is high, over current trip may occur. It
can be prevented using F9.
 In case of DC brake at high load inertia and frequency,
change the DC brake controller gain according to H37 set
value.
H37
Cx2000 AC Drive
Item
Stop mode select
DC Brake start frequency
DC Brake wait time
DC Brake voltage
DC Brake time
Caution
Load inertia ratio
Set Value Setting Range
1 0 ~ 3
- 0.10 ~ 60.00
- 0.00 ~ 60.00
- 0 ~ 200
- 0.0 ~ 60.0
F re q.
V o lta g e
C u rre n t
O p e ra tio n
C o m m a n d
0 Less than 10 times
1 About 10 times
2 More than 10 times
Chapter 8 Application
Initial Unit
0
5.00 Hz
0.10 Second
50 %
1.0 Second
F9 F11
F 8
F10
8-1