Komatsu 830E-AC Shop Manual page 402

EVENT
NUMBER DESCRIPTION
113/213 INVERTER, GENERAL
:50 B volt hi off
:51 B volt lo off
:52 C volt hi off
:53 C volt lo off
:54 phase short pos
:55 phase short neg
:60 linkV too hi PTL
:70 Aph neg I low
:71 Bph neg I low
:72 Cph neg I low
:73 Aph neg I hi
:74 Bph neg I hi
:75 Cph neg I hi
:76 Aph pos I low
:77 Bph pos I low
:78 Cph pos I low
:79 Aph pos I hi
:80 Bph pos I hi
:81 Cph pos I hi
:82 no current w run
114/214 INVERTER, GENERAL (NR)
:22 IA VCO lo
:24 IB VCO lo
:26 linkV VCO lo
:28 infilV VCO lo
:38 LinkV too lo
:40 infilV too lo
:46 DB chop VCO lo
:48 DB chopV too lo
:50 VA VCO lo
:52 VB VCO lo
:54 VC VCO lo
:56 VA volts too lo
:58 VB volts too lo
:61 VC volts too lo
E2-18
Table 3: DID PANEL FAULT CODES
(Codes Received from Inverter 1 & 2)
EVENT
RESTRICTION
Electrical Propulsion System Components
EVENT
Phase B voltage high with all IGBTs off
Phase B voltage high with all IGBTs off
Phase C voltage high with all IGBTs off
Phase C voltage high with all IGBTs off
Possible phase to DC+ short
Possible phase to DC- short
Link volts above PTL
Phase A negative current low (unbalance)
Phase B negative current low (unbalance)
INV1 (INV2) off Phase C negative current low (unbalance)
Phase A negative current high (unbalance)
Phase B negative current high (unbalance)
Phase C negative current high (unbalance)
Phase A positive current low (unbalance)
Phase B positive current low (unbalance)
Phase C positive current low (unbalance)
Phase A positive current high (unbalance)
Phase B positive current high (unbalance)
Phase C positive current high (unbalance)
No current while running
Low frequency on IA channel
Low frequency on IB channel
Low frequency on VCO link filter V channel
Low frequency on VCO in filter V channel
Link voltage too negative
Input filter voltage too positive
None Low frequency on VCO DB chopper channel
DB chopper voltage too negative
Low frequency on VCO VA channel
Low frequency on VCO VB channel
Low frequency on VCO VC channel
VA voltage too negative
VB voltage too negative
VC voltage too negative
DETECTION
INFORMATION
10/06 E02020