58 Program features
Brake state diagram
State descriptions
State name
Description
Brake control is disabled (parameter
b4 = 0). The brake is closed (
b0 = 0).
:
Brake has been requested to open. The drive logic is requested to increase the
torque up to opening torque to hold the load in place (
b1 = 1 and b2 = 1). The state of
is checked; if it is not
0 within a reasonable time, the drive trips on a
Opening conditions have been met and open signal activated (
b0 is set). The opening torque request is removed (
b1 → 0). The load is held in place by the speed control of the
drive until
,
the logic proceeds to
state. If an acknowledgement signal
source has been selected, its state is checked; if the state is not “brake open”,
the drive trips on a
Mechanical brake opening failed
The brake is open (
b0 = 1). Hold request is removed
b2 = 0), and the drive is allowed to follow the
reference.
BRAKE CLOSING
DELAY
BRAKE CLOSING WAIT
BRAKE DISABLED
BRAKE OPENING
BRAKE OPENING WAIT
BRAKE OPENING
DELAY
BRAKE CLOSED
BRAKE OPEN
BRAKE CLOSING
(from any state)
1
(from any state)
2
3
4
5
6
6
6
7
8
9
3
10
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 ...