YASKAWA Varispeed G7 User Manual

8 Protective Operations
47
 Inverter Fault Notification
If a fault is detected in the Inverter, the SI-T stores the alarm or warning code in the
MECHATROLINK-II ALARM command and simultaneously turns ON the relevant bit in
the STATUS field.
The following table shows the alarm codes for SI-T notification if a fault is detected in the
Inverter.
Table 10 Inverter Alarm Codes
ALARM Operator
Display
Description G7 F7
01H
PUF
Fuse blown
{{
02H
UV1
Main circuit undervoltage
{{
03H
UV2
Control power undervoltage
{{
04H
UV3
Inrush prevention circuit fault
{{
06H
GF
Ground fault
{{
07H
OC
Overcurrent
{{
08H
OV
Main circuit overvoltage
{{
09H
OH
Cooling fin overheating
{{
0AH
OH1
Inverter’s cooling fan stopped
{{
0BH
OL1
Motor overload
{{
0CH
OL2
Inverter overload
{{
0DH
OL3
Overtorque detected 1
{{
0EH
OL4
Overtorque detected 2
{{
0FH
RR
Internal braking transistor fault
{{
10H
RH
Installed braking resistor overheating
{{
11H
EF3
External fault 3
{{
12H
EF4
External fault 4
{{
13H
EF5
External fault 5
{{
14H
EF6
External fault 6
{{
15H
EF7
External fault 7
{{
16H
EF8
External fault 8
{{
18H
OS
Overspeed
{{
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
Digital operator connection fault
{{
1FH
ERR
Operator error
{{
20H
OH4
Motor overheating fault
{{
21H
CE
MEMOBUS communications error
{{
25H
CF
Control fault
{{
26H
SVE
Zero-servo fault
{{
27H
EF0
External fault input from communications option board
{{
28H
FBL
PID feedback reference lost
{{
29H
UL3
Undertorque detected 1
{{

YASKAWA Varispeed G7 Specifications

General

Brand	YASKAWA
Model	Varispeed G7
Category	Inverter
Language	English