GE Industrial Solutions 6KCV300lNS - Manual (Page 24)

GEI-100445
b Procedures for the recovery and the restarting.
In the case of alarm caused by a Card Hardware fault or Dpram fault you must look for
the cause in the Hardware of the card and eventually replace it.
If the connection has accidentally been stopped (for example a cable breaking), after reestablishing
the
line, proceed as follows:
The Master data cycle must be established.
If the Bus control has not been stored in the drive, control must be recovered by acting as
required by the drive (see relative manual).
Clear the alarm acting as required by the drive (see relative manual).
Enable the Process Data Channel outcoming from the Master by correctly setting the parameter
Output (Index 6002h).
Now the data cycle is active again.
2 Second case of communication status.
In this case the interface card does not indicate any alarm to the drive.
If the Peripherals Communication Protocol is not active, the Master can not control the drive; be aware that
the Process Data Channel has been enabled and therefore the exchange of data can be carried out through
it; more precisely the data outcoming from the Master and incoming in the drive (PDC Output) are transferred
but they are not active because the parameter Output has been cleared; they will become
active after the setting of this parameter, while the data incoming in the Master and outcoming from the drive
(PDC Input) are always active.
This is valid only if the Process Data Channel has already been configured by setting the parameters 6000h
for the data incoming in the Master and 6001 h for the data outcoming from the Master.
3 Third case of communication status.
This case is similar to case number two because the Peripherals Communication Protocol is not active; the
above-mentioned considerations are valid too.
We should emphize the behaviour in case the Abort service is successfully carried out while the drive is
active, i.e. it is controlling a motor (the Abort service should be never carried out under this condition).
The card acts in the following way:
The command ‘Drive Stop’ is sent to the drive.
The data of the parameters PDC Output are cleared (data outcoming from the Master; incoming
in the drive).
The Process Data Channel outcoming from the Master and incoming in the drive (PDC Output)
is disabled by clearing the parameter PDC Output Enable”.
Note that the drive does not display an alarm message because this case is not considered a real alarm.
Procedures for the recovery and the starting.
Reactivate the Communication Channel by successfully carrying out the Initiate service.
Enable the PDC data outcoming from the Master (PDC Output) by setting the parameter
Output Enable)).