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Commander SK Advanced User Guide 109
Issue Number: 2 www.controltechniques.com
Trips can be grouped into the following categories:
Table 9-14 Under voltage trip and restart levels
Table 9-15 HF trips
The braking IGBT continues to operate even when the drive is not enabled, and is only disabled if one of the following trips occurs or would occur if
another trip has not already become active: OI.br or It.br.
It should be noted that although the UU trip operates in a similar way to all other trips, all drive functions can still operate, but the drive cannot be
enabled. Parameter values are only loaded from EEPROM if the supply voltage is low enough for the switch mode power supply in the drive to shut
down and then it is increased to restart the drive power supplies. The only differences between UU and other trips are as follows:
1. Power down save user parameters are saved when UU trip is activated.
2. The UU trip is self-resetting when the DC bus voltage rises above the drive restart voltage level.
203 Sl.nF
Option module not fitted. The option module is identified by the drive by an option code. The drive stores the codes of the
modules fitted when the drive parameters are saved. The stored codes are compared with the codes from the option
modules at power-up. If a module is not present, but a code is stored in drive EEPROM to indicate that it should be fitted
the drive trips. If the module is removed after power-up the drive produces this trip within 4ms.
204 Sl.dF
Option module different fitted. The option module is identified by the drive by an option code. The drive stores the codes of
the modules fitted when the drive parameters are saved. The stored codes are compared with the codes from the option
modules at power-up. If a module is different to the code stored in drive EEPROM the drive trips.
220 to
230
HF20 - HF30 Hardware faults (See table Table 9-15
HF trips )
Category Trips Comments
Hardware faults HF01 to HF19
These indicate fatal problems and cannot be reset. The drive is inactive after one
of these trips and the display shows HFxx. The serial communications is inactive
and the parameters cannot be accessed.
Self resetting trips UU
Under voltage trip cannot be reset by the user, but is automatically reset by the
drive when the supply voltage is within specification (See table Table 9-14
Under
voltage trip and restart levels
)
Non-resetable trips HF20 to HF30, Sl.HF
Cannot be reset. The serial communications is active and parameters can be
accessed.
EEF trip EEF Cannot be reset unless a default parameter set has been loaded.
Normal trips All other trips Can be reset after 1.0s
Normal trips with extended
reset
OI.AC, OI.br Can be reset after 10.0s
Low priority trips O.Ld1, CL1, SCL If Pr 10.37 is 1 or 3 the drive will stop before tripping.
Phase loss PH
The drive stops before tripping provided the drive motoring power is suitably
reduced after 500ms of detecting phase loss
Drive voltage rating UU trip level UU restart level
200 175 215
400 330 425
HF fault code Reason for trip
01 to 04 Not used
05 No signal from DSP at start up
06 Unexpected interrupt
07 Watchdog failure
08 Interrupt crash (code overrun)
09 to 10 Not used
11 Access to the EEPROM failed
12 to 19 Not used
20 Power stage - code error
21 Power stage - unrecognised frame size
22 OI failure at power up
23 to 24 Not used
25 DSP Communications failure
26
Soft start relay failed to close, or soft start monitor failed, or braking
IGBT short circuit at power up
27 Power stage thermistor fault
28 DSP software overrun
29 to 30 Not used
No. String Cause of trip
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