Connecting Alarms2-2 296-1011-202 Rel. 5.0, Doc. Rev. 02.01CVX 600 Hardware Installation GuideConnecting AlarmsIntroductionThe SCC-LTM and SCC-RLTM contain a terminal block that allows you toconnect up to three audible alarms and three visual alarms. These alarms alert youto critical, major, and minor conditions. The left six screw terminals on theterminal block are available for visual alarms, such as lights; the right six screwterminals are available for audible alarms, such as bells.During normal, uninterrupted operation, the contacts remain open. If a failureoccurs, the contacts close and trigger the connected alarm.Alarm CategoriesThe following table lists the three general categories of alarms and the possiblecauses:Warning: The contacts on the terminal block are rated at 30 VAC andhave a maximum current rating of 1 ampere (A). The circuit connectingthe alarms must meet the requirements for safety extra-low voltage(SELV). The wires connecting the alarms must be the appropriate gaugefor alarm devices.Alarm Possible CauseCritical (Crit) Hardware failures: the system power supply and fan module havefailed, for example.Major (Maj) Communication failures: the link or network connection has failed.Minor (Min) Modem failures: the configured thresholds have been exceeded.
