Appendix
A-10
Display
Fault
Description
Retry
D
(IO-n)
I/O Error
There has been an error in communications through the I/O port.
n:
sub-code
1:
Gate Shutdown Circuit error. A feedback signal has disagreed to
a Gate Shutdown command.
2:
A/D Convertor error. The A/D Convertor has been jammed.
3:
Current Detector Offset. The offset of the Current Detector has
increased to or beyond 0.5V.
4:
Retry time out. Indicates that the operation was not successful
within the No. of retries set in C21-0.
E:
Thermistor fault
F:
Speed detection fault
×
E
(CPU-n)
CPU Error
There has been an error while the CPU, RAM or ROM is in the self-
diagnosis mode at power-up.
n:
sub-code
1:
Watch-dog error, indicating that the CPU has been jammed.
This fault may appear during at-speed operation.
2:
CPU calculation error.
3:
CPU RAM error.
4:
External RAM error.
6:
E
2
PROM check-sum error.
7:
E
2
PROM read error.
8:
E
2
PROM write error. This error is only displayed, and the gate
will not shut down and FLT will not be output.
9:
Illegal combination of software version and CPU.
×
F
(dEr)
E
2
PROM
Data Error
Indicates that there is an error in the various data stored in the E
2
PROM.
For details, enter the monitor mode: D20-2, and correct the data.
Caution)
If this appears when starting up, the details will not be stored
internally. Thus, after starting up normally, these details
cannot be read with the fault history (D20-0).
×
