Vacuum Module
X
TRA Operator’s Manual 20077/021 US 13-9
• Timeout communication failure: Communication on the XTRA-XVAC RS-422 serial connection
has timed out (for example, because of a damaged cable or loose connection).
• Serial communication failure: A double communication error on the same communication
window on the X
TRA-XVAC serial line has occurred.
When an alarm occurs (F1 to F11 and the two listed above) during or immediately after the prelink
phase, the X
TRA user interface displays the message “Vacuum pump out of order”. The XTRA system
will continue working as if the X
VAC module were absent.
When an alarm occurs during the T1 test (alarm F10 or F11) when the boot is over, the X
TRA system
will consider the X
VAC module absent without displaying any message.
When one of the two serial connection failures (listed above) occurs, the X
TRA system switches from
remote control to local control. In addition, the red alarm LED lights up. Unlike with the other alarms,
in the case of the connection failures, the module continues to work (in local control).
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