ABB ACS280 Firmware Manual page 66

66 Program features
Brake state diagram
(from any state)
1
BRAKE DISABLED
7
State descriptions
State name
BRAKE DISABLED
BRAKE OPENING
BRAKE OPEN
BRAKE CLOSING
BRAKE CLOSED
(from any state)
2
BRAKE CLOSED
6
BRAKE CLOSING
Brake control is disabled (parameter
44.01 Brake control status
= 0, and
signal is deactivated (
Brake has been requested to open. (
= 1). Brake open command signal has been activated (
control status
b0 =1). The load is held in place by the speed
control of the drive until
44.01 Brake control status
The brake is open (
request is removed (
drive is allowed to follow the reference.
Closing conditions have been met. The open signal is deactivated
44.01 Brake control status
(
44.01 Brake control status
maintained (
will remain in this state until
At this point, the logic proceeds to
The brake is closed (
is not necessarily modulating.
3
3
5
5
Description
44.06 Brake control enable
b4 = 0). Brake open command
44.01 Brake control status
44.01 Brake control status
44.08 Brake open delay
44.01 Brake control status
b0 → 0). The ramp-down request is
b3 = 1). The brake logic
44.13 Brake close delay
BRAKE CLOSED
44.01 Brake control status
BRAKE OPENING
4
BRAKE OPEN
b0 = 0).
b2
44.01 Brake
elapses.
b0 = 1). Hold
b2 = 0), and the
has elapsed.
state.
b0 = 0). The drive