Yaskawa MP940 Reference Manual - Manual (Page 397)

Troubleshooting MotionSuite™ MP940 Machine Controller Reference Manual
10-44
Note: indicates ON (“L”) signal; x indicates OFF (“H”) signal
(*1) Occurs in 30W ~ 1000W servo amplifiers.
(*2) Cannot be released by the alarm reset (/ALM-RST) signal. Release by powering off the
device after removing the cause of the alarm.
A.C9 — — — — Encoder
Communication Error*2 Communication cannot
be achieved between
the encoder and the
servo motor.
A.CA — — — — Encoder
Parameter Error*2 An encoder parameter is
corrupted.
A.Cb — — — — Encoder
Echoback Error*2 The content of the
encoder communication
is mistaken.
A.d0 Excessive Position
Deviation The position deviation
pulse exceeds the value
set in user parameter
Pn505.
A.E0 x No options No options (MP940)
have been mounted.
A.E1 — — — — Option Timeout No response from the
option port
A.E2 — — — — Option WDC Error There is an error in the
option (MP940) WDC.
A.F1 x Power Lines Open
Phase One of the three main
power supply phases is
not connected.
CPF00 Not specified Digital Operator
Transmission Error Communication cannot
be established between
the digital operator
(JUSP-0PO2A-2) and
the servo amplifier.
CPF01 — — — — — —
A.- - x Not an error display Indicates normal
operation.
Alarm Display and Alarm Code Output Relationship (Continued)
Alarm
Display
Alarm Code Output
ALO1 ALO2 ALO3
Servo
Alarm
(ALM)
Output
Alarm Name Alarm Content