Menu 10
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Parameter x.00
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description format
Advanced parameter
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Performance
138 Digitax ST Advanced User Guide
www.controltechniques.com Issue Number: 1
Unless otherwise stated trips cannot be reset until 1.0s after the trip has been accepted by the drive.
Braking IGBT control
The braking IGBT continues to operate even when the drive is not enabled (except if the active supply is a low voltage supply, see Pr 6.44), but is only
disabled if any of the following trips occurs or would occur if another trip had not already become active: OIbr.P, PS, It.br, OV or any HFxx trip.
UV trip
It should be noted that although the UV trip operates in a similar way to all other trips, all drive functions can still operate, but the drive cannot be
enabled. The following differences apply to the UV trip:
1. Power down save user parameters are saved when UV trip is activated except when the main high voltage supply is not active (Pr 6.44 = 1).
2. The UV trip is self-resetting when the DC bus voltage rises above the drive restart voltage level. If another trip is active instead of UV at this point,
the trip is not reset.
3. The drive can change between using the main high voltage supply and low voltage battery supply only when the drive is in the under voltage
condition (Pr 10.16 = 1). The UV trip can only be seen as active if another trip is not active in the under voltage condition.
4. When the drive is first powered up a UV trip is initiated if the supply voltage is below the restart voltage level and another trip is not active. This
does not cause save power down save parameters to be saved at this point.
Priority Category Trips Comments
1 Hardware faults HF01 to HF16
These indicate serious internal problems and cannot be reset. The
drive is inactive after one of these trips and the display shows
HFxx.
2 Non-resetable trips
HF17 to HF32, SL1.HF, SL2.HF,
SL3.HF
Cannot be reset.
3 EEF trip EEF
Cannot be reset unless a code to load defaults is first entered in
Pr x.00 or Pr 11.43.
4 SMARTCARD trips
C.Boot, C.Busy, C.Chg, C.Optn,
C.RdO, C.Err, C.dat, C.FULL,
C.Acc, C.rtg, C.Typ, C.cpr,
C.Prod
SMARTCARD trips have priority 5 during power up.
4 Encoder power supply trips PS.24V, EnC1
These trips can only override the following priority 5 trips: EnC2 -
EnC8 or Enc11 - En17
5
Normal trips with extended
reset
OI.AC, OI.br, OIAC.P, OIbr.P,
OidC.P
Can be reset after 10.0s
5 Normal trips
All other trips not included in this
table
5 Non-important trips Old1, cL2, cL3, SCL If bit 0 of Pr 10.37 is 1 the drive will stop before tripping.
5 Phase loss PH The drive attempts to stop before tripping.
5
Drive over-heat based on
thermal model
O.ht3
The drive attempts to stop before tripping, but if it does not stop
within 10s the drive will automatically trip.
6 Self resetting trips UV
Under voltage trip cannot be reset by the user, but is automatically
reset by the drive when the supply voltage is with specification.
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