Mech Brake Ctrl - ABB ACS850 Manual

220 Parameters
No. Name/Value
40.07 IR-compensation
0.00 ... 50.00%
40.10 Flux braking
Disabled
Moderate
Full
42

42 Mech brake ctrl

42.01 Brake ctrl
No
With ack
No ack
Description
Defines the relative output voltage boost at zero speed (IR
compensation). The function is useful in applications with a
high break-away torque where direct torque control (DTC
mode) cannot be applied.
U /U
N
(%)
Relative output voltage. IR
compensation set to 15%.
100%
15%
Field weakening point
60% of nominal
frequency
See also section IR compensation for a scalar controlled
drive on page 66.
Voltage boost at zero speed in percent of nominal motor
voltage.
Defines the level of braking power.
Flux braking is disabled.
Flux level is limited during the braking. Deceleration time is
longer compared to full braking.
Maximum braking power. Almost all available current is used
to convert the mechanical braking energy to thermal energy
in the motor.
Mechanical brake control configuration. See also section
Mechanical brake control
Activates the brake control function with or without
supervision.
Note: This parameter cannot be changed while the drive is
running.
Brake control disabled.
Brake control enabled with supervision (supervision is
activated by parameter
Brake control enabled without supervision.
Relative output voltage. No
IR compensation.
on page 72.
42.02 Brake acknowl).
FbEq
f (Hz)
100 = 1%
0
1
2
0
1
2