Mechanical Brake Control - ABB ACS580 Firmware Manual

Settings
• Parameter 96.04 Macro select
• Parameter group
• Parameter group
• Parameter groups
and monitoring


Mechanical brake control

A mechanical brake can be used for holding the motor and driven machinery at zero
speed when the drive is stopped, or not powered. The brake control logic observes
the settings of parameter group
external signals, and moves between the states presented in the diagram on page
116. The tables below the state diagram detail the states and transitions. The timing
diagram on page 117
Inputs of the brake control logic
The start command of the drive (bit 5 of
source of the brake control logic.
Outputs of the brake control logic
The mechanical brake is to be controlled by bit 0 of parameter
status. This bit should be selected as the source of a relay output (or a digital
input/output in output mode) which is then wired to the brake actuator through a relay.
See the wiring example on page 118.
The brake control logic, in various states, will request the drive control logic to hold
the motor or ramp down the speed. These requests are visible in parameter
Brake control status.
Settings
Parameter group 44 Mechanical brake control
(macro selection)
10 Standard DI, RO
40 Process PID set 1
76 PFC configuration
(page 305).
44 Mechanical brake control
shows an example of a close-open-close sequence.
(page 150)
(page 261)
(page 299) and
06.16 Drive status word
(page 275).
Program features 115
77 PFC maintenance
as well as several
1) is the main control
44.01 Brake control
44.01