Instruction manual

7 - 3
7. TROUBLESHOOTING
Display Name Definition Cause Action
17
Board error
19
Memory error3
(Flash-ROM)
Refer to Chapter 8 of the MR-J3-
B Servo Amplifier Instruction Manual.
1. Encoder connector (CN2L)
disconnected.
Connect correctly.
2. Encoder fault Change the linear encoder.
3. Encoder cable faulty
(Wire breakage or shorted)
Repair or change cable.
Communication error
occurred between
serial
communications type
encoder and servo
amplifier.
4. Encoder cable type (2-wire, 4-wire)
selection was wrong in parameter
setting.
Correct the setting in the fourth digit of
parameter No. PC26.
5. Encoder connector (CN2L)
disconnected.
Connect correctly.
6. Encoder fault Change the linear encoder.
20 Encoder error2
Communication error
occurred between
ABZ differential
output type and
servo amplifier.
7. Encoder cable faulty
(Wire breakage or shorted The
connection between PSEL and LG is
not established.)
1. Repair or change cable.
2. When the linear encoder does not have
a Z phase, set parameter No.27 to "
1
".
24 Main circuit
error
Refer to Chapter 8 of the MR-J3-
B Servo Amplifier Instruction Manual.
1. Machine struck. Perform the magnetic pole detection in
order not to strike the machine.
2. Accuracy at initial magnetic pole
detection is bad.
Review the parameter No.PS09 setting
(magnetic pole detection voltage level).
3. Poor wiring of U, V, and W. Correct the wiring.
4. Linear encoder signal resolution is
different from the setting value.
Review the parameter No.PS02 and PS03
setting (linear encoder resolution setting).
Check the installation of the linear encoder.
5. Mismatch of the linear encoder
installation direction.
Check the installation direction of the linear
encoder. Review the encoder pulse count
polarity selection in parameter No. PC27.
Check the linear servo motor control error
detection level.
27 Initial magnetic
pole detection
error
Initial magnetic pole
detection did not
operate normally
6. Magnetic pole detection limit switch
is not on.
Connect the magnetic detection limit switch
correctly.
Set the magnetic pole detection limit switch
to automatically ON by the parameter
No.PD02 setting. (When the magnetic pole
detection limit switch is used on the
controller side, do not set to automatically
ON since it is shared with the input signal.)
1. The temperature of linear encoder is
high.
Check the temperature of linear encoder
and contact with the linear encoder
manufacturer.
28 Linear encoder
error2
The margin of linear
encoder
deteriorated.
2. The signal level of linear encoder
has dropped.
Check the installation of the linear encoder.