YASKAWA Varispeed G7 Series

6 -104
Fault Trace and Fault History Details
Fault codes are read from the Inverter’s monitor constants (U2- and U3-) using MEMOBUS com-
mands. The following table lists the fault codes.
INFO
1. The maximum number of times you can write to EEPROM using the Inverter is 100 thousand. Do not fre-
quently execute ENTER commands (0900H) written to EEPROM.
The ENTER command registers are write-only. Consequently, if reading these registers, the register
address will become invalid (Error code: 02H).
2. Do not change the following user constants from MEMOBUS communications or a Communications Option
Board.
Even if the user constants are changed, the related user constants will not be changed and they will main-
tain their current values.
If the user constants must be changed, use a Digital Operator.
Constant Number (Name)
----------------------------------
A1-02 (Control Method Selection)
C1-10 (Acceleration/Deceleration Time Setting Unit)
C6-02 (Carrier Frequency Selection)
E1-03 (V/f Pattern Selection)
E2-11 (Motor Rated Output)
o1-03 (Frequency Units of Reference Setting and Monitor)
o1-04 (Setting Unit for Frequency Constants Related to V/f Characteristics)
o2-04 (kVA Selection)
U2- (80H and 81H) and U3- (90H to 93H) Fault Codes
Fault Code Name Fault Code Name
01H PUF (Fuse Blown) 19H DEV (Excessive Speed Deviation)
02H
UV1 (Main Circuit Undervoltage or Main Cir-
cuit Magnetic Contactor Operation Failure)
1AH PGO (PG Disconnection Detected)
03H UV2 (Control Power Fault) 1BH PF (Main Circuit Voltage Fault)
04H UV3 (Inrush Prevention Circuit Fault) 1CH LF (Output Open-phase)
06H GF (Ground Fault) 1DH OH3 (Motor Overheating Alarm)
07H OC (Overcurrent) 1EH OPR (Operator Disconnected)
08H OV (Main Circuit Overvoltage) 1FH ERR (EEPROM Write Error)
09H OH (Cooling Fin Overheating) 20H OH4 (Motor Overheating Fault)
0AH OH1 (Cooling Fin Overheating) 21H CE (MEMOBUS Communications Error)
0BH OL1 (Motor Overload) 22H BUS (Option Communications Error)
0CH OL2 (Inverter Overload) 25H CF (Control Fault)
0DH OL3 (Overtorque Detected 1) 26H SVE (Zero-Servo Fault)
0EH OL4 (Overtorque Detected 2) 27H
EF0 (External Fault Input from
Communications Option Board)
0FH RR (Internal Braking Transistor Fault) 28H FBL (PID Feedback Reference Lost)
10H RH (Installed Braking Resistor Overheating) 29H UL3 (Undertorque Detected 1)
11H EF3 (External Fault 3) 2AH UL4 (Undertorque Detected 2)
12H EF4 (External Fault 4) 2BH OL7 (High-slip Braking OL)
13H EF5 (External Fault 5) 2CH EF9 (External Fault 9)
14H EF6 (External Fault 6) 2DH EF10 (External Fault 10)
15H EF7 (External Fault 7) 2EH EF11 (External Fault 11)
16H EF8 (External Fault 8) 2FH EF12 (External Fault 12)
18H OS (Overspeed) 31H
VCF (Main Circuit Capacitor Neutral Point
Potential Error (400 V Class only))
TOE-S616-60.1.book 104 ページ ２０１７年８月４日 金曜日 午後３時４１分