Fault Functions - ABB ACS800 Series Firmware Manual

No. Name/Value
27.05 MAX CONT BR POWER
0.01...10000.00 kW
0.01...13405.00 Hp
27.06 BC CTRL MODE
AS GENERATOR
COMMON DC

30 FAULT FUNCTIONS

30.04 MOTOR THERM PROT
FAULT
WARNING
NO
30.05 MOT THERM P MODE
Description
Defines the maximum continuous braking power which will raise the
resistor temperature to the maximum allowed value. The value is used
in the overload protection. See
Power.
Selects the control mode of the braking chopper.
Chopper operation is allowed when the DC voltage exceeds the
braking limit, the inverter bridge modulates and the motor generates
power to the drive.
The selection prevents the operation in case the intermediate circuit
DC voltage rises due to abnormally high supply voltage level. Long
time supply voltage rise would damage the chopper.
Chopper operation is allowed always when the DC voltage exceeds
the braking limit. The selection is to be used in applications where
several inverters are connected to the same intermediate circuit (DC
bus).
WARNING! Excessive supply voltage will raise the
intermediate circuit voltage above the operation limit of the
chopper. If the voltage remains abnormally high for a long
period, the braking chopper will be overloaded and damaged.
Programmable protection functions
Selects how the drive reacts when the motor overtemperature is
detected by the function defined by
section Motor Thermal Protection
Note: The parameter has no effect if the motor temperature
measurement has been activated by group
The drive generates a warning when the temperature exceeds the
warning level (95% of the allowed maximum value). The drive trips on
a fault when the temperature exceeds the fault level (100% of the
allowed maximum value).
The drive generates a warning when the temperature exceeds the
warning level (95% of the nominal value).
Inactive
Selects the thermal protection mode of the motor. When
overtemperature is detected, the drive reacts as defined by
30.04 MOTOR THERM PROT.
27.02 BR OVERLOAD FUNC.
30.05 MOT THERM P MODE. See
on page 38.
35 MTR TEMP
Actual signals and parameters
91
FbEq
1 = 1 kW
1 = 1 Hp
0
65535
MEAS.
1
2
3