Ademco - 971 Multi-Count Analyzers (6v and 12v)

I Crossbar System 971 6V and 12V RS A MODEL DESlGNATfONS 971 MULTI COUNT ANALYZERS Cat 980,991 SENSORS No be used with No 971 6 or 971 12 Multi Count Analyzer 971 Multi Count Analyzers 980 Surface Mounted Sensors 981 Flush Mounted Sensors AND WIRING Considerations and Sensor Location Procedure AND ADJUSTMENT SPECIFICATIONS and Diagrams A MODEL DESIGNATIONS B COVERAGE AND SENSITIVITY ADJUSTMENT GUIDELINES 1 TYPE 971 MULTI COUNT ANALYZER SHOCK RESPONSE 2 TYPE 980 SENSOR 3 TYPE 981 SENSOR 4 TYPICAL SENSOR LOCATIONS 5 FIELD CONNECTIONS WITHOUT SEPARATE TAMPER LOOP 6 FIELD CONNECTIONS WITH SEPARATE TAMPER LOOP DETAILS DETAILS INFORMATION Inertia Crossbar System Type 971 Multi Count Analyzers accommodate any number of Type 980 and or 981 although a maximum of 30 is recommended system can be used alone or can complement other forms of perimeter protection The system possesses the to detect attacks before an intruder gains entry to the premises the system functions by the sensors A preset number of lower level shocks field programmable or a fault in the sensor loop will place the multi count analyzer in alarm System reset isaccomplished by pressing reset switch on the analyzer cover unless optional automatic multi count analyzer alarm relay contacts can be connected has been selected during installation any alarm panel closed circuit protective The No 971 6 Muiti Count Analyzer requires 6VDC current 60ma for its operation The No 971 12 requires 12VDC this way The multi count analyzer will respond to blows applied to the surface s ease of servicing The resultant forced entry shock detec one to nine asingle 40ma Except where otherwise information contained herein applies to both models a housing with an ALARM LED and a RESET pushbutton on its hinged cover a tam adjusting gross attack trip level sensitivity to lower level multi count shocks count number at which the unit will trip Terminals are provided for connection b Protective circuit the unit closed alarm relay pre connected 971 Multi Count Analyzers analyzer is furnished unit contains a potentiometer fixed and pins for programming a Two wire supervised sensor loop with end of line open during alarm and c GVDC power or 12VDC as required The RESET pushbutton terminals Optional automatic multi count analyzer trip level Is reached upon the sensing of the field programmed one to nine at intervals of one second or more within a fixed time period of approximately 3Oseconds Agroaa very large single shock or fault in the sensor loop will trip the system immediately See Diagram 1 a ruccesslon of shocks e g from the gentle prying of a door or window or hitting or pounding on the buildlng will be detected the system has good immunity expansion or contracting or other transient occurrences a lower level shock is seen by the sensor loop the analyzer LED will light momentarily When the trip level reached the LED will light steadily and the alarm contacts will open The unit will remain thus in alarm until reset by pressing for approximately 5 seconds of the RESET switch on its cover if optional automatic the system will reset itself after about 5 seconds The analyzer has an alarm memory If a momentary lower level occaslonal shocks such as may be caused by of power occurs while the system is in alarm the may be obtained by disconnecting of lower level has been switch will relight and the alarm contacts will remain open when power resumes until subsequently or automatically supervisedsensor and if required a separate tamper loop The housing is designated 980 Surface Mounted Sensor sensor tampered housing contains a shock sensing module and terminals for connection of the two wire mounting sensing module may be rotated up to 180 about its axis to facilitate mounting on a vertical horizontal or sloping a NORMAL or DAMPED mode depending upon range desired character and to enable sensor operation of the mounting surface and other field conditions See Diagram 2 the heart of the sensing module is the inertia crossbar assembly A high inertia mass is mounted on a highly gold plated which straddles four other highly polished gold plated elements in such a manner asto two parallel paths for the sensor circuit current with two sensing contact points in each path Optimum stability and reliability are provided by this multiple path arrangement entry attempts typically produce vibrations which affect the contact pqints of the sensing module inertia assembly The resultant tiny and rapid variations analyzer If the programmed number of shocks or a single shock of sufficient will be reached and the analyzer will go into alarm 961 Flush Mounted Sensors 981 functions similarly is particularly useful where aesthetic considerations are of prime importance such as in residences The unit is with 2 leads for connection the analyzer sensor circuit No tamper is necessary as the sensor is self orientation AND WIRING Considerations and Sensor Location of the many types of building materials and construction methods used it is impossible to give preclsesensor information might be obtained under ideal conditions number of sensors may be connected and ease of servicing The diameter of protection DP may be smaller where there are discontinuities In the mounting surface such as a round molded housing The unit requires a diameter hole for mounting and a small dot on its face any shock system but Table 6 gives general guidelines as to the diameter of protection the Type 980 Sensors but is designed for flush mounting on vertlcalsurfacesoslly at top or DAMPED dot at bottom mode of operation See Diagram 3 a single analyzer but a maximum of 30 is recommended each sensor when mounted on various materials sensor circuit current are then processed by the doors corners or joints between panels or cracks In these cases thesensors should be mounted at DP the center of the gap See Diagram 4 a b c d Where the opening exceeds the OR use sensors around theedge shown in Diagram 4 e sensed the trip NORMAL better Located sensorsat the most likely intrusion height relative to