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8 Communication and Control 8.5 Exercise Technical Training E by DEK 12/2017 75 8.5 Exercise CAN bus ● Disconnect the CAN bus from the CAN master (Node 1) and measure the line resistance out (CAN_H to CAN_L): Ω = ● Recon…

8 Communication and Control

8.4 Analysis Common error list

74 Technical Training E by DEK 12/2017

PC schematic

8.4 Analysis Common error list

Error Description Possible Cause Action

CAN bus error messages

●

Mechanical

●

Electrical

●

Look at the Event Log for clues

●

Check CCT breakers

●

Determine which Node is causing

the problem

This can be done using ISCAN*

●

Test CAN bus wire for continuity

and resistance

●

Check Nextmove ES has initialised

●

Check voltages to node(s)

8 Communication and Control

8.5 Exercise

Technical Training E by DEK 12/2017 75

8.5 Exercise

CAN bus

●

Disconnect the CAN bus from the CAN master (Node 1) and measure the line resistance out

(CAN_H to CAN_L):

Ω =

●

Reconnect CAN bus to CAN master, disconnect CAN bus IN from last Node (Node 4 on

Galaxy, Node 8 on Horizon / NeoHorizon) and measure line resistance back to Node 1

(CAN_H to CAN_L):

Ω =

●

With CAN bus connected measure line resistance (CAN_H to CAN_L):

Ω =

●

Measure the resistance from each CAN bus wire to machine chassis GND.

Ω = Ω =

●

Measure CAN bus line resistance:

– With CAN cable connected to Nextmove ES card = 60Ω (2 x 120Ω parallel)

– With CAN cable disconnected from Nextmove ES card or last node

●

Disconnect +24V from a Node and power on machine:

– What message is displayed?

………………………………………………………………………………………………………………

Carry out PCB removal and replacement procedures.

Using the ESD protective equipment supplied and with the aid of the manual, remove one of each

type of card and check for correct configuration. Replace the card ensuring any subsequent

recovery procedures are carried out.

Which configurations and settings must be completed if the Next Move card is changed?

………………………………………………………………………………………………………………

Name 3 locations where +24V can be monitored?

………………………………………………………………………………………………………………

Which cards are interchangeable for troubleshooting purpose?

………………………………………………………………………………………………………………

8 Communication and Control

Room for Your Sketches and Notes

76 Technical Training E by DEK 12/2017

Room for Your Sketches and Notes