Mech Brk Control - ABB ACS350 User Manual

Parameters – complete descriptions
Index Name/Selection
4231 TRIM SCALE
-100.0...100.0%
4232 CORRECTION SRC
PID2REF
PID2OUTPUT
4233 TRIM SELECTION
SPEED/FREQ
TORQUE
43 MECH BRK
CONTROL
4301 BRAKE OPEN DLY
0.00...2.50 s
4302 BRAKE OPEN LVL
0.0...180.0%
4303 BRAKE CLOSE LVL
0.0...100.0%
4304 FORCED OPEN LVL
0.0...100%
4305 BRAKE MAGN DELAY Defines motor magnetising time. After start drive current/torque/speed is
0...10000 ms
Description
Defines the multiplier for the trimming function. See section
trimming on page 101.
Multiplier
Selects the trim reference. See section
PID2 reference selected by parameter
value)
PID2 output i.e. signal 0127
Selects whether the trimming is used for correcting the speed or torque
reference. See section Reference trimming
Speed reference trimming
Torque reference trimming (only for REF2 (%))
Control of a mechanical brake. See section
page 126.
Defines the brake open delay (= the delay between the internal open brake
command and the release of the motor speed control). The delay counter
starts when the motor current/torque/speed has risen to the level required at
brake release (parameter
LVL) and the motor has been magnetised. Simultaneously with the start of
the counter, the brake function energises the relay output controlling the
brake and the brake starts opening.
Delay time
Defines the motor starting torque/current at brake release. After start the
drive current/torque is frozen to the set value, until the motor is magnetised.
Value in percent of the nominal torque T
current I (with scalar control).
2N
The control mode is selected by parameter
Defines the brake close speed. After stop the brake is closed when drive
speed falls below the set value.
Value in percent of the nominal speed (with vector control) or the nominal
frequency (with scalar control). The control mode is selected by parameter
9904 MOTOR CTRL MODE.
Defines the speed at brake release. Parameter setting overrides parameter
4302 BRAKE OPEN LVL setting. After start, the drive speed is frozen to the
set value, until the motor is magnetised.
The purpose of this parameter is to generate enough start torque to prevent
the motor rotating into the wrong direction because of the motor load.
Value in percent of the maximum frequency (with scalar control) or the
maximum speed (with vector control). If parameter value is set to zero, the
function is disabled. The control mode is selected by parameter
MOTOR CTRL MODE.
frozen to the value defined by parameter
FORCED OPEN LVL for the set time.
Magnetising time. If parameter value is set to zero, the function is disabled.
Reference trimming
4210 (i.e. signal
PID 2 OUTPUT value
on page 101.
Control of a mechanical brake
4302 BRAKE OPEN LVL or
(with vector control) or the nominal
N
9904 MOTOR CTRL MODE.
4302 BRAKE OPEN LVL or
Def, FbEq
Reference 0
1 = 0.1%
on page 101. PID2REF
0129 PID 2 SETPNT 1
2
SPEED/
FREQ
0
1
on
0.20
4304 FORCED OPEN
1 = 0.01 s
100%
1 = 0.1%
4.0%
1 = 0.1%
0
1 = 0.1%
9904
0
4304
1 = 1 ms
Actual signals and parameters
223