YASKAWA Varispeed G7 Series Instruction Manual page 337

INFO
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.
Fault Code
01H
UV1 (Main Circuit Undervoltage or Main Cir-
02H
03H
04H
06H
07H
08H
09H
0AH
0BH
0CH
0DH
0EH
0FH
10H RH (Installed Braking Resistor Overheating)
11H
12H
13H
14H
15H
16H
18H
-104
6
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
Name
PUF (Fuse Blown)
cuit Magnetic Contactor Operation Failure)
UV2 (Control Power Fault)
UV3 (Inrush Prevention Circuit Fault)
GF (Ground Fault)
OC (Overcurrent)
OV (Main Circuit Overvoltage)
OH (Cooling Fin Overheating)
OH1 (Cooling Fin Overheating)
OL1 (Motor Overload)
OL2 (Inverter Overload)
OL3 (Overtorque Detected 1)
OL4 (Overtorque Detected 2)
RR (Internal Braking Transistor Fault)
EF3 (External Fault 3)
EF4 (External Fault 4)
EF5 (External Fault 5)
EF6 (External Fault 6)
EF7 (External Fault 7)
EF8 (External Fault 8)
OS (Overspeed)
Fault Code
19H DEV (Excessive Speed Deviation)
1AH PGO (PG Disconnection Detected)
1BH PF (Main Circuit Voltage Fault)
1CH LF (Output Open-phase)
1DH OH3 (Motor Overheating Alarm)
1EH OPR (Operator Disconnected)
1FH ERR (EEPROM Write Error)
20H OH4 (Motor Overheating Fault)
21H CE (MEMOBUS Communications Error)
22H BUS (Option Communications Error)
25H CF (Control Fault)
26H SVE (Zero-Servo Fault)
EF0 (External Fault Input from
27H
Communications Option Board)
28H FBL (PID Feedback Reference Lost)
29H UL3 (Undertorque Detected 1)
2AH UL4 (Undertorque Detected 2)
2BH OL7 (High-slip Braking OL)
2CH EF9 (External Fault 9)
2DH EF10 (External Fault 10)
2EH EF11 (External Fault 11)
2FH EF12 (External Fault 12)
VCF (Main Circuit Capacitor Neutral Point
31H
Potential Error (400 V Class only))
Name