Yaskawa V7 Drives - Manual (Page 119)

6-9
When U-09 or n178 is selected, a four-digit box is displayed. The three digits from the right show a
fault description code, and the digit on the left shows the order of fault (from one to four). Number 1
represents the latest fault, and 2,3,4, in ascending order of fault occurrence.
• Example
n ®®® ...... 4-digit numbers
n : Order of fault (1 to 4)
®®® : Fault description
“---” is displayed if there is no fault.
(Refer to section 6 for details of fault.)
• Viewing fault record
Press the
®
or
®
key to examine the complete fault record.
• Clearing fault record
Set parameter n001 to “6” to clear the fault record. Display returns to “n001” after completion of 6
setting.
After the fault sequence has been examined, troubleshoot the most recent fault before
entering a Fault Reset command (by Digital Operator STOP/RESET key or external signal
at multi-function input) to prepare the Drive for restart of operation.
Note 1: Parameter initializing (n001=10 or 11) also clears the fault record.
Note 2: Resetting a fault from either the digital operator or multi-function input will not reset the
fault record.
6.2 Displaying Fault Sequence
< >
STEP OPERATION PROCEDURE DIGITAL DISPLAY
1
Press until the LED is lit
The digital operator display will read “U-01”
2 Press until “U-09” appears on
the display.
3 Press .
4 Press . The display indicates that
this is currently the next
code in the memory register.
5 Continue pressing to display the
other codes in the memory register. After the
last register code is displayed, the sequence
will return to the first code.
MNTR
DSPL
DIGITAL OPERATOR
STEP OPERATION PROCEDURE DISPLAY
Table 6-3. Displaying Fault Sequence
U-01
U-09
1.EF3
2.OV
3.OC
4.– – –
1.EF3
ENTER