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Diagnostics Optimization CT MODBUS RTU Technical Data
E300 Design Guide 439
Issue Number: 1
9.7 Behavior of drive when tripped
If a drive trip occurs, the following read only parameters are frozen until the trip is reset. This is to assist in diagnosing the cause of the trip. If the
parameter freeze is not required this can be disabled with Action On Trip Detection H45).
9.8 Trip reset
9.8.1 Trip categories and priorities
Trips are grouped into categories which are allocated priorities as detailed below, which can effect how and if a trip reset can be carried out. A trip can
only occur when the drive is not already tripped, or if the drive is already tripped and the new trip occurs which has a higher priority than the current
trip i.e. lower priority number). Unless otherwise stated, a trip cannot be reset until 1.0 s after it has been initiated.
Table 9-5 Trip categories and priorities
Drive trips can be manually reset using the keypad using communication protocols or using the drives auto reset feature. The manual drive reset is
carried out pressing the RED reset button as shown below in Figure 9-3 Keypad drive reset .
Parameter Description
J31 Speed Error
J32 Speed Loop Output
J22 Total Output Current
J24 Torque Producing Current
J25 Magnetizing Current
J60 Output Frequency
J61 Output Voltage
J59 Output Power
J65 DC bus voltage
F35 T5 T6 Analog Input 1
F36 T7 Analog Input 2
F37 T8 Analog Input 3
Priority Category, Trips Comments
1 Internal fault, HF01 - HF20
These are internal faults which cannot be reset, all drive features are rendered inactive.
If a keypad is installed this will display the active HF trip. These trips are not stored in the trip log.
1 Stored HF trip
This trip can only be cleared by entering 1299 into Pr mm00 followed by a reset.
2
Non re-settable trip, trip
numbers 218 to 247
These trips cannot be reset.
3
Volatile memory fault,
EEPROM Fail
This trip can only be cleared by entering to 1233 or 1244 into Pr mm00, or if Load Defaults is set to a
non-zero value.
4
Internal 24 V power supply,
PSU 24 V
5
NV Media Card trips, trip
numbers 174, 175 and 177 to
188
These trips are priority 6 during power up.
5
Position feedback power
supply, Encoder 1
This trip can override Encoder 2 to Encoder 6 trips.
6
Trips with extended reset
times, OI ac, OI Brake, and OI
dc
These trips can only be reset 10 s after the trip was initiated.
6
Phase loss and DC Bus
protection, Phase Loss and
OHt dc bus
The drive will attempt to stop the motor before tripping phase loss unless disabled.
The drive will attempt to stop the motor before tripping OHt dc bus.
6 Standard trips, All other trips
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