Parameters 235
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
). 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.
0.00 s
0.00 … 5.00 s
Brake open delay.
100 = 1 s
Defines a source that is used as a brake opening torque
reference if
• its absolute value is greater than the setting of parameter
, and
• its sign is the same as the setting of
.
See parameter
.
Zero
Zero.
0
AI1 scaled
).
1
AI2 scaled
).
2
FBA ref1
(see page
).
3
FBA ref2
(see page
).
4
Brake torque
memory
Parameter
7
Brake open torque
Parameter
.
8
Source selection (see
on 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
is used as the brake open 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.
0.0%
-1600.0 … 1600.0% Minimum torque at brake release.
See par.
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.
Not selected
0.
0
Selected
1.
1
DI1
Digital input DI1 (
, bit 0).
2
DI2
Digital input DI2 (
, bit 1).
3
DI3
Digital input DI3 (
, bit 2).
4
DI4
Digital input DI4 (
, bit 3).
5
No.
Name/Value
Description
Def
/
FbEq16
Summary of Contents for ACS860
Page 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 54: ...54 Program features ...
Page 78: ...78 Program features ...
Page 90: ...90 Application macros ...
Page 342: ...342 Additional parameter data ...
Page 380: ...380 Fault tracing ...
Page 381: ...Fault tracing 381 ...
Page 382: ...382 Fault tracing ...
Page 436: ...436 Control chain diagrams ...