YASKAWA E7LVD002 Technical Manual page 181

Digital
Operator Display
CPF23
Communication Option Card
Option DPRAM Err
Interconnection Fault
EF0
Communication Option Card External Fault
Opt External Flt
EF3
External Fault at Terminal S3
Ext Fault S3
EF4
Ext Fault S4
External Fault at Terminal S4
EF5
External Fault at Terminal S5
Ext Fault S5
EF6
External Fault at Terminal S6
Ext Fault S6
EF7
External Fault at Terminal S7
Ext Fault S7
PI Feedback Loss
This fault occurs when PI Feedback Loss
Detection is programmed to fault.
FBL
(b5-12 = 2) and the
Feedback Loss
PI Feedback < PI Feedback Loss Detection
Level (b5-13) for the PI Feedback Loss
Detection Time (b5-14).
Output Ground Fault
GF
Drive output grounding current has
Ground Fault
exceeded 50% of the Drive rated output
current.
Output Phase Loss
LF
Drive output has an open phase or the motor
Output Pha Loss
no load current is below the setting of
parameter E2-03.
Table 6.3 Fault Displays and Processing (Continued)
Description
Diagnostic & Troubleshooting 6 - 9
Cause
An option board is not
correctly connected to the con-
trol board or an option board
that is not made for the Drive
is attached to the control
board.
An external fault condition
exists.
An external fault condition
exists connected to a multi-
function digital input.
PI Feedback source
(e.g. transducer, sensor,
building automation signal) is
not installed correctly or is not
working.
Motor lead is shorted to
ground, DCCT defective.
Open phase on the output on
the Drive.
Loose terminal screws at T1,
T2 or T3.
Parameter E2-03 set
incorrectly.
Corrective Action
Remove power to the Drive.
Connect the option board once
more.
Perform a factory initialization.
Cycle power off and on to the
Drive.
Replace the option board.
Replace the control board.
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.
Verify Drive is programmed to
receive the PI Feedback source
signal.
Check to ensure the PI Feedback
source is installed and working
properly.
Remove the motor and run the
Drive without the motor.
Check the motor for a phase to
ground short.
Check the output current with a
clamp on meter to verify the
DCCT reading.
Check output voltage.
Tighten the terminal screws.
Adjust E2-03 to a lower value.