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Brake state diagram
BRAKE DISABLED
BRAKE OPENING
BRAKE CLOSED
BRAKE OPENING WAIT
BRAKE OPENING
DELAY
BRAKE CLOSING
BRAKE CLOSING
DELAY
BRAKE CLOSING WAIT
BRAKE OPEN
(from any state)
(from any state)
1
2
10
3
6
4
5
3
6
8
7
6
9
Brake control is disabled (parameter
= 0, and
b4 = 0).
The brake is closed (
b0 = 0).
BRAKE DISABLED
BRAKE OPENING:
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
is checked; if it
is not 0 within a reasonable time, the drive trips on a
fault
1)
.
BRAKE OPENING WAIT
Opening conditions have been met and open signal activated
(
b0 is set). The opening torque request is removed (
b1 → 0). The load is held in place by the speed control of the
drive until
elapses.
BRAKE OPENING DELAY
At this point, if
is set to
, the logic proceeds
to BRAKE OPEN state. If an acknowledgement signal source has
been selected, its state is checked; if the state is not “brake
open”, the drive trips on a
fault
.
The brake is open (
b0 = 1). Hold request is removed (
b2 = 0), and the drive is allowed to follow the reference.
BRAKE OPEN
BRAKE CLOSING:
114 Program features
Summary of Contents for ACS880 Series
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