Dry Contact Sensor. Communications cable - RJ-45 jack to sensor using UTP Cat 5 wire. Power source: powered by the unit. No additional power needed.

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1 Intrductin Dry Cntact Sensr The Dry Cntact sensr is a simple cnnectin t burglar alarms, fire alarms r any applicatin that requires mnitring by the unit. Dry cntact sensrs are user definable and can be used t detect many different inputs such as UPS status, security systems, air cnditining status. These general purpse switches can be either input r utput. When used as an utput it can surce up t 20 mas. Yu can select the utput vltage by setting the Output Level t a Lw r a High. When set t Lw, the pin will utput 0 vlts. When set as a High, the pin will utput 5 vlts. When used as an input a switch will retain any errr cnditin until it is read via SNMP. Therefre, if a switch encunters a critical cnditin at any time, it must reprt that cnditin befre it can return t a nrmal state. Input pins can be used t detect whether r nt an input switch is pen r clsed. In cmbinatin with external sensrs, input pins can detect whether a dr r windw is pen r clsed, if there is a water incursin and many ther cnditins. The input pins wrk by sensing the presence f a vltage level n an input pin. When the switch is pen, the vltage is different than when the switch is clsed. T test a dry cntact input, wire grund t ne side f the switch. Grund is always pin 8 n the cnnectr. Wire the ther side f the switch t the switch sensr. Set the Nrmal State field t Open. Set the Directin field t Input. When the switch clses, the input pin will be shrted t grund and the switch will change state frm nrmal t critical Specificatins & Features: Measurement Indicatin - Alarm r Nrmal Cmmunicatins cable - RJ-45 jack t sensr using UTP Cat 5 wire. Sensr type - pen/clsed cntact switch Pwer surce: pwered by the unit. N additinal pwer needed. The unit aut detects the presence f the Vltage Sensr Measurement rate - multiple readings every secnd Full Autsense including discnnect alarm

2 Dry Cntact Sensr Cnfiguring the Dry Cntact Sensr a) Plug the sensr int ne f the RJ45 prts n the rear panel f the unit. b) Nw pint yur brwser t the IP address f the unit (default, ). Next yu need t lgin as the administratr using yur administratr passwrd (default is public ). Yu will then be taken t the summary page. c) Frm the summary page yu need t select the sensrs tab. The layut f the next page will vary depending n yur unit s please refer t yur units manual. d) Yu shuld nw be able t setup the threshlds fr yur sensr. The lw critical, lw warnings, nrmal, high warnings, high critical values can be set frm this page. Nw we will cver the settings that are specific t yur sensr. Directin: The Switch Directin can be either Input r Output. When set as an Input, the sensr will reprt its status as either Nrmal r Critical. The status is Nrmal if the Nrmal State field matches the current value applied t the sensr. Fr example, if the Nrmal State field is High and the input t the sensr is high then the status is Nrmal. The input vltage shuld be limited t 0 t 5 vlts in rder t prtect the sensr. If the Directin f the sensr is Output, the sensr can be used t drive external equipment. Descriptin f Status When Nrmal: This field is the custm descriptin, which will be displayed in the Status field when the dry cntact sensr is Nrmal. Examples fr this field are: Dr Open, Pump Turned On, Light Turned On, etc Descriptin f Status When Critical: This field is the custm descriptin, which will be displayed in the Status field when the dry cntact sensr is Critical. Examples fr this field are: Dr Clsed, Pump Turned Off, Light Turned Off, etc Output Level: The Switch Output Level field can be either High/+5 Vlts r Lw/GND. When set t a High, the utput value f 5 vlts will be applied t the switch. When set t a Lw, the Output Level field will depend upn the value f Directin. If Directin is set t Output and the Output Level field is set t lw, the Switch will surce current in rder t maintain 0 Vlts. If Directin is set t Input and the Output Level field is set t lw, the Switch will becme tri-state

3 Dry Cntact Sensr The Output level f High will pull-up the switch even if the Directin is set t Input. Hwever, when the Switch Directin is set t Input and Output level is set t high the Switch will utput a weak pull-up current. This utput can be verridden by shrting the pin t grund. In this way, an external switch can be determined t be pen r clsed. Nrmal State: The Switch Nrmal State field can be either Open/+5 Vlts r Clsed/GND. When set t a +5 Vlts, the input value f 5 vlts will cause the Status t be reprted as nrmal. When set t +5 Vlts, the input value f 0 vlts will cause the Status t be reprted as Critical Lw. When the Switch Nrmal State is set t a Lw, the input value f 5 vlts will cause the Status t be reprted as Criticall High, and the input value f 0 vlts will cause the Status t be reprted as nrmal. Infrmatin n Dry cntact cables: The extensin length f the dry cntact twisted pairs is limited nly by the amunt f electrmagnetic nise in the area. S the lengths can be quite lng, but lng cable lengths may create ccasinal false psitives. These false psitives can be eliminated with the advanced filtering f the dry cntact sensr n the system. Yu can define hw lng a sensr must be in the errr cnditin befre changing state frm Nrmal t Critical. Yu can als define hw lng the sensr must remain in the Nrmal state befre changing frm Critical t Nrmal

4 Dry Cntact Sensr Special Dry Cntact settings fr the X20 and X60 mdels f the securityprbe prts By default, securityprbe-x20 and securityprbe-x60 will have the jumpers set as in Fig. 1 fr prts 9-68 Fig. 1 Fig. 2 The simplest setup fr Dry Cntact inputs is as shipped. In this setup, pwer is prvided by the securityprbe t the switches. With the securityprbe prviding the pwer, the switch has +5 Vlts applied t pin 1 and GND applied t pin 2. When the switch is pen, the input senses +5. When the switch clses, the input senses GND. N additinal external pwer is needed. Fig. 2 shws the jumpers set up t prvide pt-islatrs supprt. Opt-islatrs prvide cmplete electrical separatin between the securityprbe and the dry cntact. The securityprbe is therefre prtected against pssible large vltage spikes caused by lightning fr example

5 Dry Cntact Sensr The user can change the settings by pening the tp cver f the securityprbe-x20/x60 and changing the jumper settings accrding t the Fig 2. This will set up the X20/X60 fr pt- are islatrs inputs. Nte that the maximum vltage that can be applied t the dry cntact inputs when they cnfigured t be pt-islated is 30V. Please see the picture belw fr the lcatin f the jumpers. Nte: Dry cntact prts - prts 9-68 n the X20 and X60 mdels f the securityprbee d nt have the Autsense feature. The user has t manually place these prts nline