Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 250)

11-52 Parameters
174 Inverter Dgn1
Inverter Dgn1 shows the results of the transistor diagnostic tests.
If any of the bits are set, then a problem with the associated test
is indicated.
The bits are defined as follows:
Parameter number 174
File:group Autotune:Autotune Status
Parameter type source
Display bits
Factory default not applicable
Minimum value 00000000.00000000
Maximum value 00111111.11111111
Conversion 1 = 1
Refer to Chapter 13, Understanding the Auto-tuning Procedure,
for more information.
Bit Description
0 Soft Fault
A software fault occurred.
1 No Mtr/Bfuse
No motor connected or an open bus fuse.
2 Short Ph U-W
Phase U and W shorted.
3 Short Ph U-V
Phase U and V shorted.
4 Short Ph V-W
Phase V and W shorted.
5 Short Module
Shorted modules.
6 Gnd Flt Mod
Ground fault.
7 PriorTst Flt
Fault before shorted module ran.
Bit Description
8 Over Voltage
A hardware overvoltage fault occurred.
9 Desaturation
A hardware desaturation fault occurred.
10 Ground Fault
A hardware ground fault occurred.
11 Overcurrent
A hardware phase overcurrent fault occurred.
12 Open Transis
Open power transistor(s).
13 No Cur Fdbk
Current feedback fault(s).
14 – 15 Reserved
Leave 0.
175 Inverter Dgn2
Inverter Dgn2 shows the results of the transistor diagnostic tests.
If any of the bits are set, then a problem with the associated test
is indicated.
The bits are defined as follows:
Parameter number 175
File:group Autotune:Autotune Status
Parameter type source
Display bits
Factory default not applicable
Minimum value 00000000.00000000
Maximum value 11111111.11111111
Conversion 1 = 1
Refer to Chapter 13, Understanding the Auto-tuning Procedure,
for more information.
Bit Description
0 U Up Short
Transistor U upper shorted
1 U Lo Short
Transistor U lower shorted
2 V Up Short
Transistor V upper shorted
3 V Lo Short
Transistor V lower shorted
4 W Up Short
Transistor W upper shorted
5 W Lo Short
Transistor W lower shorted
Bit Description
6 U Offset
Current fdbk ph U offset too big
7 W Offset
Current fdbk ph W offset too big
8 U Up Open
Transistor U upper open
9 U Lo Open
Transistor U lower open
10 V Up Open
Transistor V upper open
Bit Description
11 V Lo Open
Transistor V lower open
12 W Up Open
Transistor W upper open
13 W Lo Open
Transistor W lower open
14 U Open
Current feedback phase U open
15 W Open
Current feedback phase W open