Chapter 8
8-12
Communications Errors
8-5 Inverter Alarms
■ Detecting Inverter Alarms
The Inverter’s alarm codes are not specified in DeviceNet, they are a proprietary function of these
products. When an alarm occurs, the status will change as described below.
■ Reading the Alarm Code
The following methods can be used to read the Inverter’s alarm code.
■ Alarm Codes
The following table lists the alarm codes. Refer to the Maintenance Operation Chapter of your
Inverter User’s Manual for more details on troubleshooting and correcting alarms (also known as
warnings and non-fatal faults).
● 3G3MV Alarm Codes
Function Inverter alarm status
Remote I/O The alarm output allocated in the remote I/O will turn ON.
If necessary, we recommend programming a sequence to handle the alarm (such as
stopping the Inverter) when the alarm output goes ON.
Explicit messages Read the alarm output for Class 29, Instance 1, Attribute 0B using message commu-
nications. We recommend programming a stop sequence (such as turning OFF all
related inputs controlling the Inverter) when an alarm occurs in the Inverter.
Function Inverter alarm status
Inverter’s Operator dis-
play
When the Inverter is in alarm status, the relevant information will be displayed (flash-
ing) on the Inverter’s Digital Operator.
Explicit messages The alarm code of an alarm that is currently occurring can be read with message
communications.
DeviceNet Communications Unit/Card alarm code: Class 2A, Instance 1, Attribute 6F
Alarm code (hex) Operator display Meaning
0000 --- No Inverter alarm detected
8000 STP (flashing) Operator stopped
8001 SER (flashing) Sequence error
8002 EF (flashing) External terminal fault
8003 BB (flashing) Baseblock input
8004 OL3 (flashing) Overtorque 1
8005 OH (flashing) Cooling fins overheating
8006 OV (flashing) Main circuit overvoltage
8007 UV (flashing) Main circuit undervoltage
8008 FAN (flashing) Cooling fan fault
8009 CE (flashing) Communications timeout
800A BUS (flashing) Option transfer error
800C OH3 (flashing) Motor overheating
800D FBL (flashing) Feedback loss error
800E STP (flashing) Emergency stop
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