
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