Yaskawa SGDB - Manual (Page 578)

LIST OF ALARM DISPLAYS
572
Alarm Dis-
l
Alarm Output Alarm Name Meaning Remarks
play on
Digital Op-
Alarm Code Output ALM
Out-
g
Digital Op
erator ALO1 ALO2 ALO3
Out-
put
A.A1 ON ON ON OFF Heat sink over-
heated
Heat sink of SERVOPACK was
overheated
A.b1 OFF OFF OFF OFF Reference in-
put read error
SERVOPACK CPU failed to de-
tect reference input.
A.C1 ON OFF ON OFF Servo overun
detected
The servomotor (encoder) ran
out of control.
A.C2 ON OFF ON OFF Encoder output
phase error
Phases A, B and C output by
the encoder are abnormal.
A.C3 ON OFF ON OFF Encoder A-, B-
phase discon-
nection
Wiring in encoder phase A or B
is disconnected.
A.C4 ON OFF ON OFF Encoder C-
phase discon-
nection
Wiring in encoder phases C is
disconnected.
A.F1 OFF ON OFF OFF Power lines
open phase
One phase is not connected in
the main power supply
A.F3 OFF ON OFF OFF Power loss er-
ror
A power interruption exceeding
one cycle occurred in AC power
supply.
only when bit 5 of
Cn-01 set to 1
CPF00 Undefined Digital operator
transmission
error 1
Digital operator fails to commu-
nicate with SERVOPACK even
five seconds after power is
turned ON.
These alarms are
not stored in alarm
trace-back
memory.
CPF01 Undefined Digital operator
transmission
error 2
Transmission error has oc-
curred five consecutive times.
y
A.99 OFF OFF OFF ON Not an error Normal operation status
OFF: Output transistor is OFF
ON: Output transistor is ON
D