[Al. 020_Encoder Normal Communication Error 1] - Mitsubishi Electric MR-J5-G Series User Manual

[AL. 020_Encoder normal communication error 1]

• There is a communication error between the encoder and servo amplifier.
[AL. 020.1_Encoder normal communication - Receive data error 1]
Cause
1.
There is a problem with the 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 encoder has malfunctioned.
6.
There is a problem with the surrounding
environment.
[AL. 020.2_Encoder normal communication - Receive data error 2]
Page 38 [AL. 020.1_Encoder normal communication - Receive data error 1]
[AL. 020.3_Encoder normal communication - Receive data error 3]
Cause
1.
The Z-phase signal cannot be detected
despite being on.
2.
There is a problem with the encoder cable.
3.
The external conductor of the encoder cable is
not connected to the ground plate of the
connector.
4.
The servo parameter settings for the
communication method are incorrect.
5.
The servo amplifier has malfunctioned.
6.
The encoder has malfunctioned.
7.
There is a problem with the surrounding
environment.
[AL. 020.4_Erroneous number of Z-phase interval pulses]
Cause
1.
The number of Z-phase interval pulses is
different from the value of the encoder
resolution setting.
1 SERVO AMPLIFIER TROUBLESHOOTING
38
1.3 Handling methods for alarms/warnings
Check/action method
Check if the encoder cable has been disconnected or has shorted.
If there is a problem with the cable, repair or replace the cable.
If an A/B/Z-phase differential output type encoder is being used, check if the
encoder is wired correctly.
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 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. PC22.3 Encoder cable communication method selection]
[G] [WG]: [Pr. PC04.3 Encoder cable communication method selection]
Replace the servo amplifier.
Replace the servo motor.
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
Page 38 [AL. 020.1_Encoder normal communication - Receive data error
1]
Check/action method
Check if [Pr. PL25] has been set correctly.
Model
[A]
[G]
[WG]
Model
[A]
[G]
[A]
[G]
[WG]
Model
[A]
[G]