ABB ACS800 Firmware Manual page 197

Index Name/Selection
42.06 BRAKE FAULT FUNC Defines how the drive reacts in case the status of the optional external Brake
FAULT
WARNING
42.07 STRT TORQ REF
SEL
NO
AI1
AI2
AI3
AI5
AI6
PAR 42.08
MEMORY
42.08 START TORQ REF
10 ... 300%
42.09 EXTEND RUN T
0.0 ...3600.0 s
Description
Acknowledge signal does not meet the status presumed by the brake control
function.
The drive trips on a fault: fault indication and drive stops the motor.
The drive generates a warning.
Selects the source for the motor starting torque reference applied at the brake
release. The value is read in percent of the motor nominal torque.
Note: For all selections, the minimum value used will be the value defined in
Par. 42.08.
No source selected. This is the default value.
Analogue input AI1
Analogue input AI2
Analogue input AI3
Analogue input AI5
Analogue input AI6
Defined with parameter 42.08.
The motor torque stored at the previous brake Close command.
Defines the motor starting torque at brake release if parameter
TORQ REF SEL has value PAR 42.08.
Torque value in percent of the motor nominal torque
Defines an extended run time for the brake control function at stop. During the
delay, the motor is kept magnetised and ready for an immediate restart.
Note: During operation in the local control mode, the magnetisation delay can
be interrupted by giving a second Stop command from the panel. The second
Stop command would be effective only to break the extended run time
sequence when it is already in the extended run time phase.
0.0 s = Normal stop routine of the brake control function: The motor
magnetisation is switched off after the brake close delay has passed.
0.1 ... 3600.0 s = Extended stop routine of the brake control function: The
motor magnetisation is switched off after the brake close delay and the
extended run time have passed. During the extended run time, a zero torque
reference is applied, and the motor is ready for an immediate restart.
Actual speed
1
Start/Stop
Motor magnetised
1 = brake close speed
2 = brake close delay
3 = extended run time
2
3
FbEq
1
2
1
2
3
4
5
6
7
8
42.07 START
1000 ...
30000
100 = 1 s
t
Actual signals and parameters
197