Displaying The Sequence Of Failure Occurrence - YASKAWA Varispeed-616GII Instruction Manual

8.1 DISPLAYING THE SEQUENCE OF FAILURE OCCURRENCE
Failure items
that currently
occur and that occurred
before the
power was turned off can be sequentially indicated by the following
procedure
(1) To indicate the sequence of failure items that currently occur
When
U is depressed, the sequence of trouble occurrence appears
(up to four faults),
except for OPE (illegal
constant setting) and
control function
hardware fault .
[Example of Indication]
PASSED THE
RESET
First indication
OC
~2 Depress
n
1 OC
~3 Depress 1&1 2 OV
[Example of Indication]
After the power is turned on
Oc OOCffVCE
OV OCCURRENCE OH OCCURRENCE
2) The first display : 0 [The type of display
selected before turning
off the power
U1-- appears in step 3) .
-20-
® Depress
F&-1
3 OH
© Depress
ap
1 OC
Returns to 02 state .
(2) To indicate the sequence of failure items that occurred before the power
was turned off
The VS-616GII uses NV-RAM to store the sequence of failure items that
occurred before the power was turned off (when low voltage is detected) .
Therefore, when the power is turned on again, the sequence of such failure
items (up to four) appears on the digital operator display .
PASSED THE
RESET
OC OCCURS
OH OCCI POWER OFF POWER ON
1) The first failure item that occurred before the power was turned off
appears : U1 OC . . . . Blinks 5 seconds
3) Depress [g + DSPL/ENTR
to display the sequence of failure
occurrence :
U 1 OC
4) Depress 9 : U2' OH
5) Depress
FAI
: U 1 OC Returns to 2 )
6) Return to the display type selected before depressing
a
+ DSPL/ENTR to
display the sequence of failure occurrence : 0
Note : If no failure item occurred before the power was turned off,