ABB +N5600 Firmware Instructions page 108

108 Program features
Brake state diagram
(from any state)
1
BRAKE DISABLED
10
State descriptions
State name
BRAKE DISABLED
BRAKE OPENING:
BRAKE OPENING WAIT
BRAKE OPENING DELAY
BRAKE OPEN
(from any state)
2
BRAKE CLOSED
8
BRAKE CLOSING
BRAKE CLOSING
DELAY
7
BRAKE CLOSING WAIT
Brake control is disabled (parameter
Brake control status b4 = 0). The brake is closed
b0 = 0).
Brake has been requested to open. The drive logic is requested to increase the
torque up to opening torque to hold the load in place
b1 = 1 and b2 = 1). The state of
0 within a reasonable time, the drive trips on a
not allowed fault*.
Opening conditions have been met and open signal activated
control status b0 is set). The opening torque request is removed
b1 → 0). The load is held in place by the speed control of the
control status
drive until 44.08 Brake open delay
At this point, if 44.07 Brake acknowledge selection
the logic proceeds to BRAKE OPEN
has been selected, its state is checked; if the state is not "brake open", the drive
trips on a 71A3 Mechanical brake opening failed
The brake is open (44.01 Brake control status
(44.01 Brake control status
reference.
3
BRAKE OPENING WAIT
6
3
6
6
9
Description
44.06 Brake control enable
(44.01 Brake control status
44.11 Keep brake closed
71A5 Mechanical brake opening
elapses.
is set to
state. If an acknowledgment signal source
fault*.
b0 = 1). Hold request is removed
b2 = 0), and the drive is allowed to follow the
BRAKE OPENING
4
BRAKE OPENING
DELAY
5
BRAKE OPEN
= 0, and 44.01
(44.01 Brake control status
is checked; if it is not
(44.01 Brake
(44.01 Brake
No acknowledge,