ABB ACS880 - Page 445

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
0.00 s / real32Defines a delay between a close command (that is,
when the brake control output is de-energized) and
when the drive stops modulating. This is to keep the
motor live and under control until the brake actually
closes.
Set this parameter equal to the value specified by the
brake manufacturer as the mechanical make-up time
of the brake.
Brake close delay44.13
100 = 1 s / 100 = 1 sBrake close delay.0.00 ... 60.00 s
10.00 rpm / real32Defines the brake close speed as an absolute value.
After motor speed remains below this level for the
duration of the brake close level delay (44.15 Brake close
level delay), a close command is given.
Note: Check the compatibility of this setting with 21.3
Stop mode (and the applicable deceleration time).
Brake close level44.14
- / -Brake close speed. For scaling, see parameter 46.1.0.00 ... 1000.00 rpm
0.00 s / real32Defines a brake close level delay. See parameter 44.14
Brake close level.
Brake close level
delay
44.15
100 = 1 s / 100 = 1 sBrake close level delay.0.00 ... 10.00 s
0.00 s / real32Defines a minimum time between brake closure and a
subsequent open command.
Brake reopen delay44.16
100 = 1 s / 100 = 1 sBrake reopen delay.0.00 ... 10.00 s
Fault / uint16Determines how the drive reacts upon a mechanical
brake control error.
Note: If parameter 44.7 Brake acknowledge selection
is set to No acknowledge, acknowledgement status
supervision is disabled altogether and will generate no
warnings or faults. However, the brake open conditions
are always supervised.
Brake fault function44.17
0The drive trips on a 71A2 Mech brake closing failed /
71A3 Mech brake opening failed fault if the status of
the acknowledgement does not match the status
presumed by the brake control logic.
The drive trips on a 71A5 Mech brk opening not allowed
fault if the brake open conditions cannot be fulfilled
(for example, the required motor starting torque is not
achieved).
Fault
1The drive generates a A7A1 Mechanical brake closing
failed / A7A2 Mechanical brake opening failed warning
if the status of the acknowledgement does not match
the status presumed by the brake control logic.
The drive generates a A7A5 Mechanical brake opening
not allowed warning if the brake open conditions
cannot be fulfilled (for example, the required motor
starting torque is not achieved).
Warning
Parameters 445