[Al. 071_Load-Side Encoder Normal Communication Error 1] - Mitsubishi Electric MR-J5-G Series User Manual

[AL. 071_Load-side encoder normal communication error 1]

• There is a communication error between the load-side encoder and servo amplifier.
[AL. 071.1_Load-side encoder normal communication - Receive data error 1]
Cause
1.
There is a problem with the load-side encoder
cable.
2.
The external conductor of the encoder cable is
not connected to the ground plate of the
connector.
3.
The servo parameter settings for the
communication method are incorrect.
4.
The servo amplifier has malfunctioned.
5.
The load-side encoder has malfunctioned.
6.
There is a problem with the surrounding
environment.
[AL. 071.2_Load-side encoder normal communication - Receive data error 2]
Page 81 [AL. 071.1_Load-side encoder normal communication - Receive data error 1]
[AL. 071.3_Load-side encoder normal communication - Receive data error 3]
Cause
1.
The Z-phase signal cannot be detected
despite being on.
2.
Take actions in accordance with the items shown below.
Page 81 [AL. 071.1_Load-side encoder normal communication - Receive data error 1]
[AL. 071.4_Erroneous number of load-side Z-phase interval pulses]
Cause
1.
The number of Z-phase interval pulses is
different from the value of the encoder
resolution setting.
[AL. 071.5_Load-side encoder normal 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.
Take actions in accordance with the items shown below.
Page 81 [AL. 071.1_Load-side encoder normal communication - Receive data error 1]
Check/action method
Check if the encoder cable has been disconnected, incorrectly wired, or has
shorted.
If there is a problem with the encoder cable, replace or repair the cable.
Check if the external conductor of the encoder cable is connected to the
ground plate of the connector.
Refer to "Shield procedure of CN2, CN2A, CN2B, and CN2C side connectors"
in the following manual.
Rotary Servo Motor User's Manual (HK series)
Set the servo parameter correctly 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]
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)
Check/action method
Check if the Z-phase pulse signals (PZ and PZR) of the encoder cable have
been disconnected or have shorted.
Refer to the specifications provided by the encoder manufacturer or "A/B/Z-
phase differential output type encoder" in the following manual.
MR-J5 Partner's Encoder User's Manual
Check/action method
Check if [Pr. PE51] has been set correctly.
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 the specifications provided by the encoder manufacturer or "A/B/Z-
phase differential output type encoder" in the following manual.
MR-J5 Partner's Encoder User's Manual
1 SERVO AMPLIFIER TROUBLESHOOTING
1.3 Handling methods for alarms/warnings
1
Model
[A]
[G]
[WG]
[A]
[G]
[A]
[G]
[WG]
Model
[A]
[G]
[A]
[G]
[WG]
Model
[A]
[G]
Model
[A]
[G]
[WG]
81