ABB ACS350 Series, User Manual

Page: 223 / 314

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