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Diagnostics Optimization CT MODBUS RTU Technical Data
394 E300 Design Guide
Issue Number: 1
Trip 0 (L29) to Trip 9 (L38) store the most recent 10 trips that have occurred where Trip 0 (L29) is the most recent and Trip 9 (L38) is the oldest. When
a new trip occurs it is written to Trip 0 (L29) and all the other trips move down the log, with oldest being lost. The date and time when each trip occurs
are also stored in the date and time log, i.e. Trip 0 Date (L41) to Trip 9 Time (L60). The date and time are taken from Date (J80) and Time (J81).
Some trips have sub-trip numbers which give more detail about the reason for the trip. If a trip has a sub-trip number its value is stored in the sub-trip
log, i.e. Trip 0 Sub Trip Number (L61) to Trip 9 Sub Trip Number (L70). If the trip does not have a sub-trip number then zero is stored in the sub-trip
log.
Trip categories and priorities
Trips are grouped into the categories given in the table below. A trip can only occur when the drive is not tripped, or if it is already tripped and the new
trip has a higher priority than the active trip (i.e. lower priority number). Unless otherwise stated a trip cannot be reset until 1.0 s after it has been
initiated.
L29 Trip 0
Mode Open-Loop, RFC-A, RFC-S
Minimum 0 Maximum 255
Default Units
Type 8 Bit Power Down Save Update Rate Write on trip
Display Format Standard Decimal Places 0
Coding RO, TE, ND, NC, PT, BU
Value Text Value Text
0 None 16 Autotune 6
1 Reserved 001 17 Autotune 7
2 Over Volts 18 Autotune Stopped
3 OI ac 19 Brake R Too Hot
4 OI Brake 20 Motor Too Hot
5 PSU 21 OHt Inverter
6 External Trip 22 OHt Power
7 Over Speed 23 OHt Control
8 Inductance 24 Thermistor
9 PSU 24V 25 Th Short Circuit
10 Th Brake Res 26 I/O Overload
11 Autotune 1 27 OHt dc bus
12 Autotune 2 28 An Input 1 Loss
13 Autotune 3 29 An Input 2 Loss
14 Autotune 4 30 Watchdog
15 Autotune 5 31 EEPROM Fail
Priority Category Trips Comments
1 Internal faults HF01 – HF20
These are fatal problems that cannot be reset. All drive features
are inactive after any of these trips occur. If a basic keypad is
installed it will show the trip, but the keypad will not function.
These trips are not stored in the trip log.
1 Stored HF trip Stored HF
This trip cannot be cleared unless 1299 is entered into
Pr mm00 and a reset is initiated.
2 Non-resettable trips
Trip numbers 218 to 247, Slot1 HF
,
Slot2 HF, Slot3 HF or Slot4 HF
These trips cannot be reset.
3 Volatile memory failure EEPROM Fail
This can only be reset if Pr mm00 is set to 1233 or 1244, or if
Default Drive (H04) is set to a non-zero value.
4 Internal 24V power supply
PSU 24V
5 Non-volatile media trips Trip numbers 174, 175 and 177 to 188 These trips are priority 6 during power-up.
5
Position feedback interface
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 cannot be reset until 10s after the trip was initiated.
6
Phase loss and d.c. link power
circuit protection
Phase Loss and OHt dc bus
The drive will attempt to stop the motor before tripping if a
Phase Loss.000 trip occurs unless this feature has been
disabled (see Action On Trip Detection (H45). The drive will
always attempt to stop the motor before tripping if an OHt dc
bus occurs.
6 Standard trips All other trips
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