Yaskawa Matrix Converter - Manual (Page 329)

7
-8
FBL
Feedback
Loss
PID Feedback Reference Lost
A PID feedback reference loss was
detected (b5-12 = 2) and the PID feed-
back input was less than b5-13 (PID
feedback loss detection level) for
longer than the time set in b5-14 (PID
feedback loss detection time).
- -
EF0
Opt Exter-
nal Flt
External Fault Input from
Communications Option Card
-
Check the Communications
Option Card and communications
signals.
EF3
Ext Fault
S3
External Fault (Input Terminal S3)
An “external fault” was input from a
multi-function input terminal.
• Reset external fault inputs to the
multi-function inputs.
• Remove the cause of the exter-
nal fault.
EF4
Ext Fault
S4
External Fault (Input Terminal S4)
EF5
Ext Fault
S5
External Fault (Input Terminal S5)
EF6
Ext Fault
S6
External Fault (Input Terminal S6)
EF7
Ext Fault
S7
External Fault (Input Terminal S7)
EF8
Ext Fault
S8
External Fault (Input Terminal S8)
EF9
Ext Fault
S9
External Fault (Input Terminal S9)
EF10
Ext Fault
S10
External Fault (Input Terminal S10)
An “external fault” was input from a
multi-function input terminal.
• Reset external fault inputs to the
multi-function inputs.
• Remove the cause of the exter-
nal fault.
EF11
Ext Fault
S11
External Fault (Input Terminal S11)
EF12
Ext Fault
S12
External Fault (Input Terminal S12)
SVE
Zero Servo
Fault
Zero-servo Fault
The rotation position moved during
zero-servo operation.
The torque limit is too small. Increase the limit.
The load torque is too large. Reduce the load torque.
- Check for signal noise.
OPR
Oper Dis-
connect
Digital Operator Connection Fault
The connection to the digital operator
was broken during run for a Run Com-
mand from the digital operator.
-
Check the connection to the digi-
tal operator.
CE
Memobus
Com Err
MEMOBUS Communications Error
A normal reception was not possible
for 2 s or longer after control data was
received once.
-
Check the communications
devices and communications sig-
nals.
Table 7.1 Fault Displays and Processing (Continued)
Display Meaning Probable Causes Corrective Actions