Alarm
code
Alarm
sub-
code
Name Description  Check point and remedy reference
(PG)
 
PG disconnec-
tion
(1) Break in wiring be-
tween pulse generator
and option
Check that the pulse generator is correctly
connected, and that there is no break in wir-
ing.
→ Check that the pulse generator is cor-
rectly connected, or tighten screws.
→ Check that the connecting sections are
not caught.
→ Replace with wiring that is not broken.
 
(2) Strong noise re-
ceived from surrounds
Check measures against noise (grounding
conditions, signal wiring and communication
cable/main circuit wiring and installation
methods, etc.).
→ Implement measures against noise.
→ Separate main circuit wiring and control
circuit wiring as much as possible.
(d0)
 
Excessive posi-
tioning devia-
tion
(1) Encoder disconnec-
tion
Check that there are no breaks in encoder
wiring.
 
(2) Mismatch between
the encoder rotation di-
rection (wiring phase
sequence) and motor
rotation direction (inver-
ter output phase se-
quence)
Connect so that all directions match, and re-
view settings.
Review d14 to d17 settings values.
 
(3) Deviation over set-
tings values are too low
Review d223, d224 settings values.
If settings values are low, increase these.
 
(4) Position control gain
is too low
Review d203, d204 settings values.
If settings values are low, increase these.
 
(5) Speed control gain
is too low.
Review d03(A45,b45,r45) settings values.
If settings values are low, increase these.
 
(6) Torque is limited
If a torque limit is operating, then position
control and speed control will not operate
correctly.
Take the following measures so that the tor-
que limit is not applied.
• Reduce load
• Review acceleration/deceleration time
• T
o reduce load, review the speed reduc-
tion ratio, motor capacity, and other equip-
ment configuration.
Parameters marked with * are for 1st control only. When using 2nd control, refer to 2nd Control Func-
tion (SET) on page 5-52 and replace these values.
9 Troubleshooting
9-24
M1 Series Standard Type User's Manual (I669)