ABB ACS280 Firmware Manual page 67

State change conditions (
1 Brake control disabled (parameter
06.11 Main status word
2
3 Brake has been requested to open.
44.08 Brake open delay
4
5 Brake has been requested to close.
44.13 Brake close delay
6
7 Brake control enabled (parameter
Timing diagram
The simplified timing diagram below illustrates the operation of the brake
control function. Refer to the state diagram above.
Start command
06.16
( b5)
Modulating
06.16
( b6)
06.11
Ready ref ( b2)
Speed reference
Brake open
command signal
44.01
( b0)
Hold stopped
44.01
request ( b2)
Ramp to stopped
44.01
request ( b3)
State
1
t
Motor magnetization delay
md
t
Brake open delay (parameter
od
n
Brake close speed (parameter
cs
t
Brake close delay (parameter
cd
)
n
, bit 2 = 0.
has elapsed.
has elapsed.
t
md
t
od
BRAKE
BRAKE OPENING
CLOSED
2 3
44.08 Brake open delay
44.14 Brake close level
44.13 Brake close delay
44.06 Brake control enable
44.06 Brake control enable
BRAKE OPEN
4 5
)
)
)
Program features 67
→ 0).
→ 1).
n
cs
t
cd
BRAKE
BRAKE CLOSING
CLOSED
6 7 8