Alarm Detection - YASKAWA E7 Drive User Manual

Alarm Detection

Alarms are detected as a type of Drive protection function that do not operate the fault contact. The Drive will automatically
return to its original status once the cause of the alarm has been removed.
The Digital Operator display flashes and the alarm is output at the multi-function outputs (H2-01 to H2-02).
When an alarm occurs, take appropriate countermeasures according to the table below.
Digital
Operator Display
Option Communication Error
BUS
After initial communication was
Option Com Err
established, the connection was lost.
Serial communication transmission error.
CALL
Communication has not yet been estab-
SI-F/G ComCall
lished
Both the forward and the reverse run com-
EF
mands are input simultaneously for 500mS
External Fault
or more. This alarm stops the motor.
EF0
Opt External Flt
Communication Option Card External Fault
(Flashing)
EF3
External Fault at Terminal S3
Ext Fault S3
(Flashing)
EF4
External Fault at Terminal S4
Ext Fault S4
(Flashing)
EF5
External Fault at Terminal S5
Ext Fault S5
(Flashing)
EF6
External Fault at Terminal S6
Ext Fault S6
(Flashing)
EF7
External Fault at Terminal S7
Ext Fault S7
(Flashing)
Table 6.2 Alarm Displays and Processing
Description
Diagnostic & Troubleshooting 6 - 8
Cause
Connection is broken, master
has stopped communicating
Connection not made properly,
user software not configured to
the proper baud rate or
configuration
An external forward and
reverse command are input
simultaneously
An external fault condition
exists
An external fault condition
exists connected to a
multi-function digital input
Corrective Action
Check all connections, verify all
user side software configurations.
Check all connections, verify all
user side software configurations
Check external sequence logic
Check for an external condition
Verify the parameters
Verify communication signal
Eliminate the cause of an external
fault condition
Remove the fault from a multi-
function digital input