Schneider Electric 312 manual Communication fault management, Code Name Probable cause Remedy

Diagnostics

Communication fault management

The behaviour of the drive in case of communication interruption is described in the ATV312 programming manual.

The communication between the master (external management system) and the drive is broken:

In this case, the drive will generate a (CnF) error message.

The communication card is not working properly:

In this case, the drive will generate a (COF) message.

Code	Name		Probable cause		Remedy
CFF	[INCORRECT	• The current configuration is		•	Return to factory settings or retrieve the backup
	CONFIG.]		inconsistent.		configuration, if it is valid. See the [Restore config.]
		• Addition or removal of an option			(FCS) parameter in ATV312 programming manual.
CnF	[NETWORK	• Communication detected fault on the		•	Check the environment (electromagnetic
	FAULT]		communication card		compatibility).
				•	Check the wiring.
				•	Check the time out.
				•	Replace the option card.
				• See the [CANopen fault mgt] (COL) parameter in the
					ATV312 programming manual to define the stop
					mode with a (CnF).
COF	[CANopen FAULT]	•	Interruption in communication	•	Check the communication bus.
			between the option card and the	•	Check the option card.
			drive
ILF	[INTERNAL LINK	•	Interruption in communication	•	Replace the option card.
	FAULT]		between the option card and the
			drive

(CnF) [Network fault]: Option card fault code

This parameter is read-only and is only visible if an option card is present. The fault code remains saved in the parameter, even if the cause disappears. The parameter is reset after the drive is disconnected and then reconnected.

The values of this parameter is:

1: Time out on the reception of the periodic variables addressed to the drive

For the full list of the fault detected codes, see ATV312 programming manual on www.schneider-electric.com

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