Yaskawa Sigma Mini - Manual (Page 275)

LIST OF ALARM DISPLAYS
— D-2 —
Alarm Display
Alarm
Display
on Digital
Operator
Alarm
Output
Alarm Name Meaning Remarks
A.02 OFF Parameter
breakdown
Checksum results of parameters are abnormal.
A.04 OFF Parameter setting
error
The parameter setting is outside the allowable setting range.
A.10 OFF Overcurrent An overcurrent flowed through the power transistor.
A.31 OFF Position error pulse
overflow
Position error pulse has exceeded the value set in parameter
Cn-1E (overflow).
For the
speed/
torque
control
(only with
the zero-
clamp
function),
and for the
position
control
A.51 OFF Overspeed Motor speed has exceeded 4950 min −1 .
A.70 OFF Overload Rated torque was exceeded during continuous operation.
A.80 OFF Encoder error The number of encoder feedback pulses is abnormal.
A.b1 OFF Reference input
read error
Servopack CPU failed to detect reference input. For speed/
torque
control
A.C1 OFF Servo overrun
detected
The Servomotor (encoder) ran out of control.
A.C2 OFF Encoder output
phase error
Phase-A, -B and -C output by the encoder are abnormal.
A.C3 OFF Encoder phase-A,
-B disconnection
Wiring in encoder phase A or B is disconnected.
A.C4 OFF Encoder phase-C
disconnection
Wiring in encoder phase C is disconnected.
CPF00 Unde-
fined
Digital Operator
transmission error
1
Digital Operator fails to communicate with Servopack even five
seconds after power is turned ON.
These
alarms are
not stored
i l
CPF01 Unde-
fined
Digital Operator
transmission error
2
Transmission error has occurred five consecutive times.
in alarm
traceback
memory.
A.99 ON Not an error Normal operation status
OFF: Output transistor is OFF (alarm state)
ON: Output transistor is ON
TERMS
Checksum
An automatic check function for a set of data such as parameters. It stores the sum of pa-
rameter data, recalculates the sum at specific timing, and then checks whether the stored
value matches the recalculated value. This function is a simple method of checking whether
a set of data is correct.
D