Yaskawa F7 Drive User Manual - Manual (Page 136)

Diagnostics & Troubleshooting 6 - 11
Table 6.2 Alarm Displays and Processing
Digital
Operator Display
Description Cause Corrective Action
EF0
Opt External Flt
(Flashing)
Communication Option Card External
Fault An external fault condition was
present.
Check for an external condition.
Verify the parameters.
Verify communication signal.
EF3
Ext Fault S3
(Flashing)
External Fault at Terminal S3 - S8
Detected when terminals S3 - S8 (H1-01 to
H1-06) are programmed for external fault
function that alarms only and continues to
run the Drive.
An external fault condition
exists that was connected to a
multi-function digital input.
Eliminate the cause of an external
fault condition.
EF4
Ext Fault S4
(Flashing)
EF5
Ext Fault S5
(Flashing)
EF6
Ext Fault S6
(Flashing)
EF7
Ext Fault S7
(Flashing)
EF8
Ext Fault S8
(Flashing)
E5
SI-T WDT Err
<3021>
SI-T Watchdog Error Detected
A watchdog error was detected when the
Run Command or a frequency reference
was set from the option board and continu-
ous operation was set for the E5 operation
selection.
Synchronization error between
the master controller and the
Drive for control data.
Check the communication
timing (such as communications
cycle, etc.).
Refer to SI-T manual for details.
E-15
SI-F/G Com Err
SI-F/G Communications Error Detected
A communication error is detected when a run
command or frequency reference is set from
the SI-F/G Option Card (b1-01=3, b1-02=3)
and communication is lost.
Communication has been lost to
the SI-F/G option card
connected and b1-01=3 and/or
b1-02=3.
Check the communications
signals.
Check the settings of b1-01 and
b1-02.
Check the setting of F6-01.
Check the host side (master)
communication configuration.
FAN
Cooling FAN Err
<3021>
Drive’s Cooling Fan Fault
A cooling fan fault was detected.
This fault is detected when L8-32 is set to 0.
The Drive’s cooling fan has
stopped.
Replace the cooling fan.