274 Actual signals and parameters
4233 TRIM
SELECTION
Selects whether the trimming is used for correcting the
speed or torque reference. See section Reference trimming
on page 129.
SPEED/F
REQ
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 157.
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 magnetized.
Simultaneously with the start of the counter, the brake
function energizes the relay output controlling the brake and
the brake starts opening.
0.20 s
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 magnetized.
100%
0.0…180.0% Value in percent of the nominal torque T
N
(in vector control)
or the nominal current I
2N
(in 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 (in vector control) or
the nominal frequency (in 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 magnetized.
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 =
NOT SEL
0.0 = NOT SEL
0.0…100.0%
Value in percent of the maximum frequency (in scalar
control) or the maximum speed (in 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 magnetizing 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 = NOT
SEL
All parameters
No. Name/Value Description Def/FbEq
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