INDICATION
(DISPLAY) FAILURE INDICATION ITEM DESCRIPTION
SC Load short-circuit Drive output has been short-circuited.
Short Circuit
SP i Input open-circuit Drive input has an open-circuit in one or more phase.
Input Pha Loss
Uv1 Low voltage (Power UV) Occurs two seconds after detection of low voltage.
Undervoltage 1 Detection level: 230V drive = 190 VDC or less;
460V drive = 380 VDC or less; 600V drive = 546 VDC or
less.
Uv2 Low voltage (Control UV) Control circuit voltage levels below acceptable levels
Undervoltage 2 during operation.
Uv3 Low voltage (MC fault) Main circuit (precharge) magnetic contactor not operating
Undervoltage 3 correctly.
NOTES:
(1)
These are all Control PCB hardware faults – see Troubleshooting Chart 6.9.
(2)
Note that circumstances leading to these faults stress the drive’s output devices - do not
simply reset the fault without following procedure in Troubleshooting Chart 6.5 or 6.6.
Table 6-2. Fault Indication and Details - Continued
INDICATION
(DISPLAY) FAULT DESCRIPTION
6-3
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