Bosch DS794Z User's Manual
Contents
1. Base e Options OA120 2 Mirror and TC6000 Test Cord Shipped in packages of 2 3 0 Mounting Select a location likely to intercept an intruder moving across the coverage pattern review patterns on page 4 The recommended mounting height is 7 5 ft 2 3 m for the DS794Z with the OA80 or OA120 Mirror or 10 ft 3 1 m for the OA200 Mirror Each mounting surface should be solid and vibration free When mounting avoid hot and cold drafts heat sources animals and pets and direct sunlight Do not mount outdoors e Remove the cover by inserting a thin screwdriver into each of the four slots on the cover Twist gently until the cover snaps free of the tabs on the base BOSCH 3 1 Bracket Mounting NOTE The use of the B334 Mounting Bracket included is strongly recommended when installing this detector Because variations exist in the surfaces of most mounting walls most units are not mounted at perfect angles to the floor or walls This may cause the pattern to point away from the ideal direction For example A shift of only 1 degree will cause a pattern shift of 1 7 ft 0 52 m at 100 ft 30 5 m Under worst case conditions this will cause the pattern to be aimed over the head of intruders at maximum range or into walls of narrow corridors What may seem to be poor range or catch performance may be the result of improper alignment B334 COVER NOTCH ag TH2. 2011 Bosch Security Systems Inc 8 0 Final Tests 10 0 Coverage Patterns NOTE Meter readings are very important in determining back ground disturbance levels and catch margin sensitivity TOP VIEW 0 METERS Connect a 20 000 ohm volt or greater DC VOM to the Noise Voltage Mirror to Pattern connector pins as shown Set meter scale for about 3 VDC Route Reference meter wiring through the slot in the base Use of the TC6000 is recommended but is not essential for meter use The base reference level for reading background noise or target voltages is approximately 2 0 VDC Installations in quiet environments therefore will result in a steady meter reading between 1 9 and 2 1 VDC Voltage changes greater than 0 75 VDC from the reference level are SDE VEW desirable for good catch performance If changes are less than O METERS 0 75 VDC the device may fail to respond at this distance if the temperature difference between the intruder and the background is very small oer OA80 Mirror Coverage Turn on all heating and cooling sources that would normally be in operation during times of protection Stand away from the unit and outside the coverage pattern then monitor the background noise a for at least three minutes 0 METERS Mirror to Pattern DS794Z readings should not deviate from the reference level more Reference than 0 15 VDC For readings o
3. is shipped with the Motion Monitor feature Off 6 0 Supervision Features The DS794Z performs several supervision features that combined with the advanced motion detection capabilities of the detector provide an extremely high level of security A supervision trouble condition is indicated at the detector by the Alarm Test LED see the Supervision Display Chart e The LED indicates the cause of the supervision trouble once per second using coded pulses The supervision trouble signal activates the Trouble Output available on terminal 8 DS794Z Installation Instructions The supervision features function as follows e PIR The operation of the PIR is electronically checked approximately every 12 hours If the PIR fails the Alarm Test LED will flash 4 times and the Trouble Output will activate Motion Monitor Supervision This feature verifies that the detector has aclear view of the detection area When selected using switches S4 and S5 a supervision timer is activated A trouble condition will be indicated if the detector has not alarmed at least once during the selected time period this feature can be disabled by placing both switches in the Off position The time period selected should be long enough to allow adequate time for holiday weekends Refer to Section 5 0 Configuration Switch Settings for proper switch settings If the time period selected has elapsed from the last alarm the LED will flash 2 times and the Troubl
4. storage and operating range is 20 to 120 F 29 to 49 C For UL Listed Requirements the range is 32 to 120 F 0 to 49 Sonalert Connector Using a Sonalert type sounder low voltage will provide an audible tone when the unit is in alarm A sounder is intended only as an aid for walk testing during installation Reading Bosch Security Systems Inc Product Date Codes For Product Date Code information refer to the Bosch Security Systems Inc Web site at http www boschsecurity com datecodes CIRCUIT BOARD RETAINER TAB 2 Ga COVER TAMPER SWITCH TAMPER RELAY REPLACEABLE OPTICAL MODULE PERMANENT RELFECTING MIRROR Y TO REPLACE OPTICAL MODULE LIFT THIS EDGE UP WALK TEST ALARM LED INDICATOR L BACKGROUND NOISE SETUP SWITCH BANK VOLTAGE CONNECTOR UNDER MIRROR ASSEMBLY SONALERT CONNECTOR UNDER MIRROR ASSEMBLY TERMINAL STRIP Front view with cover off SURFACE WIRE Ls ENTRANCE L BRACKET WIRE ENTRANCE oO SURFACE MOUNT HOLES 4 REAR WIRE ENTRANCE CORNER MOUNT fef HOLES 4 REAR WIRE ENTRANCE 0 WIRING CHANNEL O TAMPER screw HOLE COVER TABS 4 TEST SOUNDER Ly CORD SLOT N A
5. 0 1 1 2 2 2 5 1 LED Operation S1 e ON Allows the Alarm Test LED to operate when activated by motion e OFF The LED will not operate on alarm activation but will indicate a supervision trouble condition 5 2 Sensitivity Mode S2 and S3 Sensitivity modes depend on the type of coverage desired and the installation environment Standard Sensitivity The recommended setting for the DS794Z with the 80 ft 24 4 m Mirror installed Tolerates environment extremes on this setting Not recommended for the 120 ft 36 6 m and 200 ft 61 m coverages Intermediate Sensitivity The recommended setting for the 120 ft and 200 ft 86 6 m and 61 m coverages or for locations where an intruder is expected to cover only a small portion of the protected area Tolerates normal environments on this setting High Sensitivity The setting for fast response to intruder signals For use in quiet environments where thermal and illumination transients are not anticipated If both switches are in the Off position the unit will default to the Intermediate setting NOTE Although the sensitivity modes provide different degrees of tolerance to environmentally caused alarms the installer should assure peak background noise voltage readings do not exceed 0 15 VDC See Section 8 0 Final Tests 5 3 Motion Monitor S4 and S5 Set switches S4 and S5 for the desired Motion Monitor time see Supervision Features The detector
6. Installation Instructions DS794Z Long Range Passive Infrared Intrusion Detector with Self test Trademark names are used throughout this document In most cases these designations are claimed as trademarks or registered trademarks in one or more countries by their respective owners Rather than placing a trademark symbol in every occurrence of a trademark name Bosch Security Systems Inc hereinafter referred to as Bosch uses the names only in an editorial fashion and to the benefit of the trademark owner with no intention of infringing the trademark 1 0 General Description The DS794Z is a high performance intrusion detector designed to provide an alarm condition upon the detection of an intruder moving into or through its coverage pattern Technology designed into the DS794Z is based on the transmission of infrared energy all objects transmit infrared energy The warmer an object is the more infrared energy transmitted The DS794Z detects the change in infrared energy that occurs when a target passes through its view The coverage pattern consisting of sensor fingers to detect the target is arranged in a side by side array The total number of fingers is determined by the optical module used The fingers are grouped by polarity into pairs with each pair consisting of one zone To detect motion the DS794Z must first see a change in infrared energy in one finger followed by a change of energy in the remaining finger Therefore d
7. READED STUD B334 BODY DS794Z BASE i Lock Washer WASHER EARS OUT CURVED WASHER HEX NUT NOTCHED SIDE DOWN Bracket to Base Assembly To insure proper catch performance a bracket mounted detector permits the flexibility needed to properly adjust the direction of the coverage pattern v IMPORTANT If Mounting to the B334 Mounting Bracket e Remove the cover of the bracket by inserting a thin screwdriver into the notch on the side of the bracket and twisting gently Insert the alarm and power wiring through the center hole from the rear of the B334 base Do not insert wiring if the bracket is to be surface mounted Mount the B334 to a standard single gang switch or outlet box using the supplied Bevel Head screws If surface mounting the unit use the wall screw anchor assemblies or appropriate alternatives Remove the circuit board from its base Press the two circuit board retainer tabs outward and lift the circuit board away from the base Remove the sticker covering the entrance from the back of the detector base Insert the threaded stud through the appropriate stud hole in the B334 bracket Use the bottom hole for wall mounting or the front hole for ceiling mounting Make sure the hex head is seated in place Complete the assembly by securing the detector base to the B334 bracket using the suppli
8. e Output will activate It is recommended that the 30 day timer be selected This verifies that the unit is operational and avoids nuisance trouble conditions caused by holidays vacations etc Supervision Display Chart LED ON maem 7 0 Setup and Walk Testing If a different optical module is to be used e Slide the current module free from its housing Install the new optical module onto the housing Make sure it snaps into place NOTE Excessive handling of the front mirrored surfaces may lead to performance degradation e Replace the front cover NOTE All testing must be performed with the front cover in place Apply power to the unit e Wait at least two minutes after applying power to start walk tests For best results wait at least 1 minute between walk tests to allow the processing to adjust to the background NOTE Walk testing should be done across the coverage pattern as shown The edge of the coverage pattern is determined when the Alarm Test LED indicator and optional Sonalert if installed first turns on NOTE The use of a Sonalert type device sounder will provide an audible tone during the time the unit is in alarm Of the three available connector pins the center pin is positive with respect to either outside pin outside pins are common Walk test the unit from all directions to determine the boundaries e After completion of the walk tests remove the Sonalert if installed
9. ed curved washer and hex nut see drawing Hand tighten the hex nut 2011 Bosch Security Systems Inc Thread the bracket wiring through the stud and along the wiring channel in the detector s base to the area of the circuit board s terminal strip Return the circuit board to its base Slide the back of the circuit board under the tabs at the back of the base then snap the front into place Aim the detector in the desired general direction and tighten the hex nut using the supplied hex wrench Should the detector require realignment loosen the hex nut reposition the detector and then retighten the nut he WIRE ENTRANCE STUD HOLE FOR CEILING MOUNTED BRACKET STUD HOLE HIDDEN tT FOR WALL MOUNTED BRACKET O MOUNTING HOLES 4 S B334 Bracket 3 2 Surface or Corner Mounting e Remove the circuit board from its base Press the two circuit board retainer tabs outward and lift the circuit board away from the base Select and break away the appropriate thin wall wire entrance covering the detector base Using the base as a template mark the location of the mounting holes on the mounting surface Pre start the mounting screws Route the wiring to the rear of the base and through the wire entrance Firmly mount the base to the mounting surface NOTE Begsure allwiring is unpowered de energized before routing e Return the circuit board to its base Slide the back of the circuit board under the tab
10. isturbances that occur in only one finger do not constitute motion and are ignored The catch sensitivity may be changed by the installer to provide a degree of sensitivity determined by each installation 2 0 Specifications e Coverage The DS794Z is shipped with the OA80 80 foot 24 4 m Mirror installed If a 200 foot 61 m range is desired it will be necessary to install the OA200 Mirror that is sent along with the unit Standard Range Broad OA80 Mirror 80 ft by 50 ft 24 4 m by 15 3 m Long OA200 Mirror 200 ft by 10 ft 61 0 m by 3 1 m Optional Range Long OA120 Mirror 120 ft by 25 ft 36 6 m by 7 6 m Input Power 6 0 to 15 0 VDC 18 mA at 12 VDC Standby Power There is no internal standby battery Connect to DC power sources capable of supplying standby power if primary power fails Eighteen mA H required for each hour of standby time needed Four hours 72 mMA H minimum are required for UL Listed Requirements Sensitivity Field selectable for Standard Intermediate or High Alarm Relay Silent operating Form C relay Contacts rated 125 mA 28 VDC maximum for DC resistive loads Do not use with capacitive or inductive loads Tamper Normally Closed with cover in place tamper switch Contacts rated at 28 VDC 125 mA maximum Trouble Output A solid state open collector shorts to ground when the detector is in a trouble condition Maximum current load is 25 mA Temperature The
11. s at the back of the base then snap the front into place 4 0 Wiring ONLY APPLY POWER AFTER ALL CONNECTIONS HAVE BEEN MADE AND INSPECTED CAUTION NOTE Do not coil excess wiring inside unit Locate the two piece terminal strip on the side of the circuit board assembly Remove the wiring connector from the terminal strip by inserting a screwdriver between the wiring connector and terminal strip and gently prying apart e Terminals 1 amp 2 Power limits are 6 to 15 VDC Use no smaller than 22 AWG 0 8 mm wire pair between the unit and the power source Terminals 3 4 amp 5 Alarm relay contacts rated 125 mA 28 VDC maximum for DC resistive loads Use terminals 4 amp 5 for Normally Closed circuits Do not use with capacitive or inductive loads Terminals 6 amp 7 Tamper contacts rated at 28 VDC 125 mA Terminal 8 Trouble Solid State Trouble output Shorts to ground when the detector is in a Trouble condition Re install the wiring connector to the terminal strip DS794Z Installation Instructions 5 0 Configuration Switch Settings The DS794Z has several features that are controlled using the configuration switches CONFIGURATION SWITCHES N LEDON FF LED OFF N and 3 ON Standard Sensitivity FF and 3 ON Intermediate Sensitivity ON and 3 OFF High Sensitivity 4ONand 5 OFF 4 Day Motion Monitor 40FFand50N 30 Day Motion Monitor 4 OFF and 5 OFF Motion Monitor Off Ol o o
12. utside these limits eliminate the o l cause re point the unit slightly or mask off the affected zones i A 9 0 Other Information 9 1 LED Indicator Operation e If viewing the operation of the Alarm Test LED indicator is not desired aftersetup and walk tests are completed place configuration OA120 Mirror Coverage switch S1 in the Off position 9 2 Sealing the Wire Entrance TOP VIEW e The foam plug that is provided with the unit is for sealing the wire 0 METERS 61 entrance from drafts and insects 3 SS 0 FEET 200 9 3 Maintenance SIDE VIEW 0 METERS At least once a year the range and coverage should be checked according to Sections 7 0 and 8 0 Walk Testing and Final Tests To ensure continued daily operation the end user should be OA200 Mirror Coverage instructed to daily walk through the far end of the coverage pattern This assures an alarm output prior to arming the system Mirror to Pattern Reference 9 4 Mirror Module Information e Should the mirror surfaces become soiled or dirty clean using a soft clean cloth and any commonly available mild window cleaner 9 5 Masking e Refer to the mirror module and pattern drawings for masking information Before attempting any masking be sure the chosen mirror surface is the correct one When attempting to remove an
13. y masking many adhesives will either destroy the mirror s surface or leave enough residue behind to reduce coverage performance Shaded areas of the mirror drawings do not affect the pattern and therefore are not maskable 2011 Bosch Security Systems Inc 3 11 130 Perinton Parkway Fairport New York 14450 DS794Z Installation Instructions www boschsecurity com P N F01U068930 06 Page 4
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