
Program features 67
State change conditions (
)
Timing diagram
The simplified timing diagram below illustrates the operation of the brake
control function. Refer to the state diagram above.
1
Brake control disabled (parameter
→
0).
2
, bit 2 = 0.
3
Brake has been requested to open.
4
has elapsed.
5
Brake has been requested to close.
6
has elapsed.
7
Brake control enabled (parameter
→
1).
n
t
md
Motor magnetization delay
t
od
Brake open delay (parameter
n
cs
Brake close speed (parameter
t
cd
Brake close delay (parameter
)
Start command
b5)
Modulating
b6)
1
2
3
4
5
6
7
8
Ready ref (
b2)
Speed reference
Brake open
command signal
(
Ramp to stopped
request (
b3)
Hold stopped
request (
b2)
t
od
n
cs
State
t
md
t
cd
Summary of Contents for ACS280
Page 1: ... ABB MACHINERY DRIVES ACS280 coldplate drives Firmware manual ...
Page 4: ......
Page 10: ...10 ...
Page 16: ...16 Control panel ...
Page 20: ...20 Start up ID run and use ...
Page 24: ...24 Default control connection ...
Page 88: ...88 Program features ...
Page 298: ...298 Parameters ...