ABB ACS355 User Manual page 221

All parameters
No. Name/Value
DC HOLD
DC BRAKING
2105 DC HOLD
SPEED
0...360 rpm
2106 DC CURR REF Defines the DC hold current. See parameter
0...100%
2107 DC BRAKE
TIME
0.0...250.0 s
Description
DC hold function active. DC hold is not possible if parameter
9904 MOTOR CTRL MODE
When both the reference and the motor speed drop below
the value of parameter
will stop generating sinusoidal current and start to inject DC
into the motor. The current is set by parameter
CURR REF. When the reference speed exceeds parameter
2105 value, normal drive operation continues.
Motor speed
Ref
DC hold speed
Note: DC hold has no effect if the start signal is switched
off.
Note: Injecting DC current into the motor causes the motor
to heat up. In applications where long DC hold times are
required, externally ventilated motors should be used. If the
DC hold period is long, the DC hold cannot prevent the
motor shaft from rotating if a constant load is applied to the
motor.
DC current braking function active.
If parameter 2102 STOP FUNCTION
braking is applied after the start command is removed.
If parameter 2102 STOP FUNCTION
braking is applied after the ramp.
Defines the DC hold speed. See parameter
CTL.
Speed
HOLD CTL.
Value in percent of the motor nominal current (parameter
9906 MOTOR NOM CURR)
Defines the DC brake time.
Time
Actual signals and parameters 221
setting is SCALAR:
2105 DC HOLD SPEED, the drive
DC hold
is set to COAST, DC
is set to RAMP, DC
2104 DC HOLD
Def/FbEq
1
FREQ.
2106 DC
t
t
2
5 rpm
1 = 1 rpm
2104 DC 30%
1 = 1%
0.0 s
1 = 0.1 s