INTRAC-305 ALARMS & ERRORS
© 2011 Advantech Wireless INTRAC-305 MANUAL - Issue 3.2 Page 49
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The INTRAC-305 has two type of alarm condition. Primary
Alarms and Secondary Alarms. The system will go into
Standby mode if a Primary Alarm is triggered. Secondary
Alarms leave the INTRAC in its current mode.
PRIMARY ALARMS A Primary Alarm becomes active if one (or more) of the
following conditions arise :-
Antenna movement limit switch activated.
Software limit tripped.
Emergency Stop button operated.
Interlock switch activated.
Motor drive failure. (Drive Fail Alarm)
Antenna moves in wrong direction. (Drive Fail Alarm)
Hardware (processor) fault.
Antenna driven within 1.4 of 0 Az in the Northern
Hemisphere or within 1.4 of 180 Az in Southern
Hemisphere (Drive Fail Alarm).
Resolver fault. (Synchro alarm) (apparent position
change of more than 1.4 in1/64 second).
Drive Fail Alarm The Drive Fail Alarm encompasses a number of other alarms.
If there has been no change in the least significant bit (LSB)
of the resolver output within 10 seconds of drive being
activated. If either Az or El axis drive more than 1.4 in the
wrong direction. If the antenna is driven within 1.4 of North
(Azimuth 0) {or 1.4 of South (Az 180) Southern
Hemisphere}.
The Drive Fail Alarm is not activated in Manual (P) Mode.
If a drive time-out occurs the INTRAC enters Standby Mode.
This prevents the drive motors being damaged by continually
re-starting.
When any Primary Alarm becomes active the red “System
Alarm” indicator on the INTRAC front panel illuminates and
the system enters Standby Mode. The actual alarm which
has occurred can then be viewed on the screen by pressing
Menu Key 5 (Show Alarms) in the Home menu.