Fault Functions - ABB ACS880 Series Firmware Manual

254 Parameters
No. Name/Value
30.30 Overvoltage control
Disable
Enable
30.31 Undervoltage
control
Disable
Enable
31

31 Fault functions

31.01 External event 1
source
Active (false)
Inactive (true)
DIIL
DI1
DI2
DI3
DI4
DI5
DI6
DIO1
DIO2
Other [bit]
31.02 External event 1
type
Fault
Warning
Warning/Fault
Description
Enables the overvoltage control of the intermediate DC link.
Fast braking of a high inertia load causes the voltage to rise
to the overvoltage control limit. To prevent the DC voltage
from exceeding the limit, the overvoltage controller
automatically decreases the braking torque.
Note: If the drive is equipped with a brake chopper and
resistor, or a regenerative supply unit, the controller must be
disabled.
Overvoltage control disabled.
Overvoltage control enabled.
Enables the undervoltage control of the intermediate DC link.
If the DC voltage drops due to input power cut off, the
undervoltage controller will automatically decrease the motor
torque in order to keep the voltage above the lower limit. By
decreasing the motor torque, the inertia of the load will cause
regeneration back to the drive, keeping the DC link charged
and preventing an undervoltage trip until the motor coasts to
a stop. This will act as a power-loss ride-through functionality
in systems with high inertia, such as a centrifuge or a fan.
Undervoltage control disabled.
Undervoltage control enabled.
Configuration of external events; selection of behavior of the
drive upon fault situations.
Defines the source of external event 1.
See also parameter 31.02 External event 1
0 = Trigger event
1 = Normal operation
0.
1.
DIIL input (10.02 DI delayed
Digital input DI1 (10.02 DI delayed
Digital input DI2 (10.02 DI delayed
Digital input DI3 (10.02 DI delayed
Digital input DI4 (10.02 DI delayed
Digital input DI5 (10.02 DI delayed
Digital input DI6 (10.02 DI delayed
Digital input/output DIO1
Digital input/output DIO2
Source selection (see Terms and abbreviations
Selects the type of external event 1.
The external event generates a fault.
The external event generates a warning.
If the drive is modulating, the external event generates a fault.
Otherwise, the event generates a warning.
type.
status, bit 15).
status, bit 0).
status, bit 1).
status, bit 2).
status, bit 3).
status, bit 4).
status, bit 5).
(11.02 DIO delayed status, bit 0).
(11.02 DIO delayed status, bit 1).
on page 112). -
Def/FbEq16
Enable
0
1
Enable
0
1
Inactive
(true); DI6
(95.20 b8)
0
1
2
3
4
5
6
7
8
11
12
Fault
(95.20 b8)
0
1
3