Data Parity; Transfer Error - Mitsubishi FREQROL-SFJ Maintenance Manual

Cause
Power supply capa-
city insufficient
Trouble with card
S F J - C A 1
Trouble with control
unit
(11) DATA PARITY and TRANSFER ERROR
These alarms appear if parity error occurs, or data are
not transferred correctly in data communcation between
M300 series CNC and FR-SFJ.
Cause
Connector engaged
loosely
Trouble with term-
inal resistor
Checkup
Check if AC input supply
(R, S, T) goes down below
Make sure the same alarm is
reproducible and then replacei SFJ-CAl.
the card SFJ-CA1 in use with
If the same alarm occurs
again even when a new card
SFJ-CA1 is used, the control
unit is likely to be defec-
tive.

DATA PARITY

TRANSFER ERROR

Checkup
Cable connector is not en-
gaged securely or connector
mounting screw is loose.
--.
Check if this alarm occurs
on the servo axis when spin-
101 -
Remedy
Use power supply
of larger capa-
city (refer to
the Specifics-
tion).
Operate FR-SFJ
with limited
torque and reduc-
ed output.
{Replace the card
Replace the con-
trol unit.
Remedy
securely and
all
screws.