ABB ACS850 Firmware Manual page 36

36 Program features
Settings
Parameter group 42 Mech brake ctrl
BSM = Brake State Machine
* Depending on setting of parameter
42.12 Brake fault func
9)
Fault/Alarm*
BRAKE NOT CLOSED
10)
Fault/Alarm*
BRAKE START TORQUE
11)
12)
Fault/Alarm*
BRAKE NOT OPEN
NN
State (Symbol
- NN: State name
- W/X/Y/Z: State outputs/operations
W: 1 = Brake open command is active. 0 = Brake close command is active. (Controlled
through selected digital/relay output with signal
X: 1 = Forced start (inverter is modulating). The function keeps the internal Start on until the
brake is closed in spite of the status of the external Stop. Effective only when ramp stop
has been selected as the stop mode
the forced start. 0 = No forced start (normal operation).
Y: 1 = Drive control mode is forced to speed/scalar.
Z: 1 = Ramp generator output is forced to zero. 0 = Ramp generator output is enabled
(normal operation).
State change conditions (Symbol
1) Brake control is active
is requested to stop. The drive control mode is forced to speed/scalar.
2) External start command is on AND brake open request is on (source selected by
Brake close req
(page 169).
13)
Fault/Alarm*
BRAKE NOT CLOSED
)
W/X/Y/Z
(11.03 Stop
)
(42.01 Brake ctrl
is 0) AND reopen delay
From any state
1)
BSM
0/0/1/1
STOPPED
2)
BSM
0/1/1/1
START
3)
OPEN
1/1/1/1
BRAKE
4)
RELEASE
1/1/0/0
RAMP
6)
CLOSE
0/1/1/0
BRAKE
7) 8)
03.16 Brake command.)
mode). Run enable and faults override
= With ack or No ack) OR modulation of the drive
(42.07 Reopen delay) has elapsed.
5)
42.10