ABB ACS880 Firmware Manual page 443

No. Name / Range /
Selection
44.8 Brake open delay
0.00 ... 5.00 s
44.9 Brake open torque
source
Zero
AI1 scaled
AI2 scaled
FBA ref1
FBA ref2
Brake torque
memory
Brake open torque
Other [value]
44.10 Brake open torque
-1600.0 ... 1600.0 %
44.11 Keep brake closed
Description
Defines the brake open delay, ie. the delay between the
internal open brake command and the release of motor
speed control. The delay timer starts when the drive
has magnetized the motor and increased the motor
torque to the level required for brake release
(parameter 44.3 Brake open torque
Simultaneously with the timer start, the brake control
logic energizes the brake control output and the brake
starts to open.
Set this parameter to the value of mechanical opening
delay specified by the brake manufacturer.
Brake open delay.
Defines a source that is used as a brake opening torque
reference if
• its absolute value is greater than the setting of
parameter 44.10 Brake open
• its sign is the same as the setting of
open torque.
See parameter 44.10 Brake open
Zero.
12.12 AI1 scaled value (page
12.22 AI2 scaled value (page
3.5 FB A reference 1 (page
3.6 FB A reference 2 (page
Parameter 44.2 Brake torque
Parameter 44.10 Brake open
See Terms and abbreviations (page
Defines the sign (ie. direction of rotation) and minimum
absolute value of the brake open torque (motor torque
requested at brake release in percent of motor nominal
torque).
The value of the source selected by parameter
Brake open torque source
torque only if it has the same sign as this parameter
and has a greater absolute value.
Note: This parameter is not effective in scalar motor
control mode.
Minimum torque at brake release. For scaling, see
parameter 46.3.
Selects a source that prevents the brake from opening.
0 = Normal brake operation
1 = Keep brake closed
Note: This parameter cannot be changed while the
drive is running.
reference).
torque, and
44.10 Brake
torque.
226).
228).
179).
179).
memory.
torque.
169).
44.9
is used as the brake open
Parameters 443
Def / Type
FbEq 16b / 32b
0.00 s / real32
100 = 1 s / 100 = 1 s
Brake open torque /
uint32
0
1
2
3
4
7
8
0.0 % / real32
- / -
Not selected / uint32