Mitsubishi Electric MR-J5-G Series User Manual page 81

[AL. 070.3_Load-side encoder initial communication - Receive data error 3]
Cause
1.
Unused axes have not been disabled.
2.
The load-side encoder cable has been
disconnected.
3.
There is a problem with the load-side encoder
cable.
4.
When an external power supply was used for
the load-side encoder, the voltage of the
external power supply became unstable.
5.
The servo parameter settings for the
communication method are incorrect.
6.
If an A/B/Z-phase differential output type
encoder is being used, the connection with the
encoder is incorrect.
7.
When using a four-wire type linear encoder,
the servo amplifier is not compatible with the
four-wire type linear encoder.
8.
The servo amplifier has malfunctioned.
9.
The load-side encoder has malfunctioned.
10.
There is a problem with the surrounding
environment.
11.
The values of the servo parameters for
manufacturer setting were changed.
[AL. 070.5_Load-side encoder initial communication - Transmission data error 1]
Cause
1.
If an A/B/Z-phase differential output type
encoder is being used, the wiring of the
encoder is incorrect.
2.
There is a problem with the load-side encoder
cable.
3.
The servo amplifier has malfunctioned.
4.
The load-side encoder has malfunctioned.
5.
There is a problem with the surrounding
environment.
Check/action method
Set the axis not used to disabled with disabling control axis switch (SW3-2/
SW3-3/SW3-4).
Check if the load-side encoder cable is connected correctly.
Check if the load-side encoder cable has been disconnected or has shorted.
If there is a problem with the load-side encoder cable, replace or repair the
cable.
Review the power supply capacity and the voltage of the external power
supply.
Set the servo parameter according to the encoder cable communication
method (two-wire type/four-wire type).
[A]: [Pr. PC44.3_Load-side encoder cable communication method selection]
[G]: [Pr. PC26.3_Load-side encoder cable communication method selection]
Check if the wiring of the A/B/Z-phase differential output type encoder is
correct. Check if the encoder is wired to PSEL.
Refer to "A/B/Z-phase differential output type encoder" in the following manual.
MR-J5 Partner's Encoder User's Manual
Check if the servo amplifier is compatible with the four-wire type linear
encoder.
Refer to "Parts identification" in the User's Manual (Introduction).
Replace the servo amplifier.
Replace the load-side encoder.
Check the noise, ambient temperature, and other conditions, and implement
appropriate countermeasures for the cause.
If there is noise, take countermeasures to reduce the noise.
Refer to "Noise reduction techniques" in the following manual.
MR-J5 User's Manual (Hardware)
Restore the values of the servo parameters for manufacturer setting to the
initial values.
Check/action method
Check if the A/B-phase pulse signals (PA, PAR, PB, and PBR) of the encoder
cable have been disconnected or have shorted.
Refer to "A/B/Z-phase differential output type encoder" in the following manual.
MR-J5 Partner's Encoder User's Manual
Page 78 [AL. 070.1_Load-side encoder initial communication - Receive
data error 1]
1 SERVO AMPLIFIER TROUBLESHOOTING
1.3 Handling methods for alarms/warnings
1
Model
[WG]
[A]
[G]
[WG]
[A]
[G]
[A]
[G]
[WG]
[G]
[WG]
Model
[A]
[G]
[A]
[G]
[WG]
79