Net2 access control unit - IP Way

Size of enclosure350mmPower supply350mmFigure 3.15Recommended size of PSUenclosureIf the ACU is to be mounted in the power supply enclosure then theremust be sufficient space. An enclosure of 350x350mm or larger isrecommended.AlarmsThe Net2 system has the capacity to report PSU tampering and mainsfailure. If the monitoring of these features is required then the chosenpower supply must have tamper and mains fail clean contact outputs.InputsExit buttonAny push to make button can be used. The button should be physicallyrobust to suit the volume of traffic through the access point and theenvironmental conditions. An exit button is not required if exit is byusing a handle or an out reader.Door contactTo enable door monitoring, door contacts must be used. The door contactcircuit must be closed when the door is shut. Two states of alarm can begenerated with door monitoring, door forced open and door left open.Autolock means that when a door closes, the locking mechanismautomatically locks even if the door open time has not expired. Thisfeature can help to reduce tailgating. If autolocking is required then adoor contact must be fitted.Power supply tamperThis input is for a power supply tamper switch. This will allow tamperingto appear as an alarm event at the PC. The Net2 plastic enclosure also has atamper switch fitted. Where there is a separate PSU and enclosure, thetamper switches can be wired in series.PSUThis input is for mains monitoring. This requires the power supply tohave a mains fail relay output. The ACU will report a mains fail alarm ifthis input changes state.Chapter 3 About 17