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Menu 10
Unidrive SP Advanced User Guide 201
Issue Number: 10 www.controltechniques.com
Each bit in this parameter has the following functions:
Stop on non-important trips
If bit 0 is set to zero then the drive simply trips when a non-important trip occurs. Non-important trips are: th, ths, Old1, cL2, cL3, SCL. If bit 0 is set to
one the drive will stop before tripping when one of these trips is initiated, except in Regen mode where the drive trips immediately.
Disable braking IGBT trips
For details of braking IGBT trip mode see Pr 10.31.
Disable phase loss trip (size 0 only)
The user can disable the phase loss trip in 200V size 0 drives as these are allowed to operate from a single phase supply. If bit 2 is set to zero the
phase loss trip is enabled. If bit 2 is set to one the phase loss trip is disabled in 200V size 0 drives only.
Disable braking resistor temperature monitoring failure detection
Size 0 drives have an internal user fit braking resistor with a thermistor to detect overheating of the resistor. As default bit 3 of Pr 10.37 is set to zero,
and so if the braking resistor and its thermistor is not installed the drive will produce a trip (br.th) because the thermistor appears to be open circuit.
This trip can be disabled so that the drive can run by setting bit 3 of Pr 10.37 to one. If the resistor is installed then no trip is produced unless the
thermistor fails, and so bit 3 of Pr 10.37 can be left at zero. This feature only applies to size 0 drives.
When a value other than zero is written to the user trip parameter the actions described in the following table are performed. The drive immediately
writes the value back to zero. If the value is not included in the table a trip is initiated with the same trip number as the value provided the drive is not
already tripped.
10.37 Action on trip detection
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Range
Open-loop, Closed-loop vector, Servo,
Regen
0 to 15
Default
Open-loop, Closed-loop vector, Servo,
Regen
0
Update rate Background read
Bit Function
0 Stop on non-important trips
1 Disable braking IGBT trips
2 Disable phase loss trip (size 0 only)
3
Disable braking resistor temperature
monitoring failure detection (size 0 only)
10.38 User trip
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Range
Open-loop, Closed-loop vector, Servo,
Regen
0 to 255
Default
Open-loop, Closed-loop vector, Servo,
Regen
0
Update rate Background read
Action Values written to 10.38 Trip code
No action
1
31
200
205
210
217-245
UU
EEF
SL1.HF
SL2.HF
SL3.HF
HFx
Drive reset 100
Clear trip and trip time logs 255
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