Page 2 - TABLE OF CONTENTS
AM-255 TABLE OF CONTENTS 1. INTRODUCTION ..................................................................................................................... 1 1.1. SCOPE AND PURPOSE OF MANUAL.................................................................... 1 1.2. GENERAL DESCRIPTION ..............
Page 4 - INTRODUCTION page 1; connectors. The two systems are totally independent.
1. INTRODUCTION page 1 Model AM-255 1. INTRODUCTION 1.1. SCOPE AND PURPOSE OF MANUAL This manual is designed to enable operating and service personnel to properly operate and care for the AM-255. Since applications are necessarily site-specific, operation procedures are given in general terms. Servi...
Page 5 - INTRODUCTION page 2
1. INTRODUCTION page 2 Model AM-255 1.4. SPECIFICATIONS Display: 4 alarm indicator LEDs per pillar being monitored; One systems ready LED, one power on LED Power: Internal: 12 volt, 7Ah sealed lead-acid battery pack Relay Power: Maximum 0.6 amp at 120Vac Battery life: More than 24 hours of normal op...
Page 6 - INSPECTION AND SETUP; providing replacement or repair of the instrument if necessary.
2. INSPECTION AND SET-UP page 3 Model AM-255 2. INSPECTION AND SETUP The following procedures should allow on-site personnel to correctly install and set up the AM-255 for normal operation. Follow the procedures in the order given. It is recommended that a copy of the Initial Installation Set-Up Che...
Page 10 - constant tamper alarms.
2. INSPECTION AND SET-UP page 7 Model AM-255 SYSTEM #2 INPUT SIGNALS RELAY OUTPUTS Signal Terminal Strip, Pin Signal Terminal Strip, Pin Radiation Alarm J5-1 Radiation, C J2-1 High Background J5-2 Radiation, NC J2-2 Low Background J5-3 Radiation, NO J2-3 Tamper J5-4* High Background, C J2-4 Common J...
Page 12 - OPERATING INSTRUCTIONS page 9; OPERATING INSTRUCTIONS
3. OPERATING INSTRUCTIONS page 9 Model AM-255 3. OPERATING INSTRUCTIONS 3.1. CONTROLS AND INDICATORS The controls and indicators can be made to operate in several different ways. How they operate is controlled by the software installed. The front panel contains the power LED, ready LED, alarm indica...
Page 13 - OPERATING INSTRUCTIONS page 10; monitor’s low battery levels are signaled by the tamper alarm.; SUMMARY OF ALARM INDICATIONS
3. OPERATING INSTRUCTIONS page 10 Model AM-255 Acknowledge: This is a momentary contact pushbutton switch which clears the audio and visual indication of alarm conditions. Key Switch: The key switch is used to clear alarm lamps or test relays during maintenance. Test: A momentary contact pushbutton ...
Page 14 - OPERATING INSTRUCTIONS page 11; alarm so that proper action may be taken.
3. OPERATING INSTRUCTIONS page 11 Model AM-255 3.3. OPERATION During normal operation no operator intervention is needed. If an alarm condition is indicated, the AM-255 will sound an audible alarm and the panel lamps will indicate the nature of the alarm so that proper action may be taken. Pressing ...
Page 15 - THEORY OF OPERATION page 12; THEORY OF OPERATION; section in this manual.
4. THEORY OF OPERATION page 12 Model AM-255 4. THEORY OF OPERATION The alarm monitor model AM-255 is a battery powered, remote monitor unit used with TSA’s pedestrian and vehicle portal monitors. The AM-255 provides both audible and visual alarm indications for radiation alarms, low and high backgro...
Page 16 - THEORY OF OPERATION page 13; AM-255 board are controlled by a Programmable Logic Device.
4. THEORY OF OPERATION page 13 Model AM-255 4.2. COMPONENTS 4.2.1. AM-255 Board: The AM-255 Board is the controller board for the system. It receives information from the system, and enables the appropriate lamps, relays, and the Sonalert. All functions of the AM-255 board are controlled by a Progra...
Page 17 - MAINTENANCE page 14; - checking the alarm lamps and Sonalert with the TEST switch
5. MAINTENANCE page 14 Model AM-255 5. MAINTENANCE 5.1. MAINTENANCE PROCEDURES The AM-255 has been designed for continuous use, and once initial installation has been completed, little maintenance is required. Periodic inspection is recommended to insure proper functioning. This should include (but ...
Page 18 - MAINTENANCE page 15; PERFORMANCE VERIFICATION CHECKLIST
5. MAINTENANCE page 15 Model AM-255 5.2. PERFORMANCE VERIFICATION CHECKLIST ___ Repairs made (if any): list component and type of repair: ______________________________________________________________________________ ______________________________________________________________________________ ____...
Page 19 - TROUBLESHOOTING page; front panel and replace the two screws.
6. TROUBLESHOOTING page 16 Model AM-255 6. TROUBLESHOOTING This guide is designed so that on-site personnel can service the AM-255 and effect necessary minor repairs. It covers procedures and parts down to the board level. Any other problems should be referred to factory authorized service personnel...
Page 20 - The Lamps are soldered to the circuit board.; should only be performed by qualified service personnel.
6. TROUBLESHOOTING page 17 Model AM-255 6.1.3. Battery Charger: The Battery Charger is wired directly into Molex connector to the AM-255 board. To disconnect, the Molex pins must be removed from the housing by inserting a small screwdriver or sharp pointed object into the slots in the housing and pr...
Page 21 - least 13.5 volts. If it is not then the charger must be replaced.
6. TROUBLESHOOTING page 18 Model AM-255 To check the charger, disconnect the positive terminal from the battery and J1 from the AM-255 circuit board. Measure the voltage from between the black and red battery wires. It should be at least 13.5 volts. If it is not then the charger must be replaced. NO...
Page 22 - APPENDIX A. WARRANTY page19; APPENDIX; manufacture of these instruments.; Manufactured by
APPENDIX A. WARRANTY page19 Model AM-255 APPENDIX A. WARRANTY STANDARD WARRANTY FOR TSA SYSTEMS INSTRUMENTS TSA Systems, Ltd., warrants this instrument to be free from defects in workmanship and materials for a period of twelve months from the date of shipment, provided that the equipment has been u...
Page 23 - APPENDIX B. GLOSSARY page20; binary number that can be used by the microprocessor.; CPS or cps: Counts Per Second; and increase system sensitivity to certain isotopes. Also see ULD.; POST: Power On Self Test
APPENDIX B. GLOSSARY page20 Model AM-255 B. GLOSSARY ADC: Analog to Digital Converter, is an integrated circuit that converts an analog signal into a binary number that can be used by the microprocessor. CPS or cps: Counts Per Second High Background Alarm/Fault: The condition that occurs if the coun...
Page 24 - APPENDIX B. GLOSSARY page21; the full background time.
APPENDIX B. GLOSSARY page21 Model AM-255 Rolling Background: This is the background accumulation method used in most of TSA’s instruments. Background accumulation is done in ten separate buffers, each buffer represents 1/10 of the total background time. As each buffer is filled, the background is up...
Page 25 - APPENDIX C. FORMULAS page22
APPENDIX C. FORMULAS page22 Model AM-255 C. FORMULAS The following formulas are used in various systems manufactured by TSA Systems, Ltd. They are provided to assist in verifying system operation and to give our customers a better understanding of how the systems operate C.1. ACTIVITY FROM COUNTS Ac...
Page 26 - APPENDIX C. FORMULAS page23
APPENDIX C. FORMULAS page23 Model AM-255 C.4. RELIABLE DETECTABLE ACTIVITY (RDA) FORMULA This formula calculates the minimum activity, in disintegrations per minute, that can be reliably detected under a given set of operational conditions. BKG = total background counts per count time CON = confiden...
Page 27 - APPENDIX C. FORMULAS page24; R = the quality factor
APPENDIX C. FORMULAS page24 Model AM-255 C.6. VARIANCE The variance analyzer mode is used to check whether the counts seen by the controller are actually from the proper distribution. If the distribution approaches normal, the resulting number will approach 0. Any significant deviation from the norm...
Page 28 - APPENDIX D. CONFIGURATION TRACKING SHEET page25; D. CONFIGURATION TRACKING SHEET
APPENDIX D. CONFIGURATION TRACKING SHEET page25 Model AM-255 D. CONFIGURATION TRACKING SHEET TSA MODEL NUMBER:______________ SERIAL NUMBER:________________ SOFTWARE VERSION:_______________ DATE RECEIVED:________________ OPTIONS AND ACCESSORIES:_______________________________________________ ________...
Page 29 - APPENDIX E. PARTS LISTS page26; - Product Serial Number; For Assistance Call:
APPENDIX E. PARTS LISTS page26 Model AM-255 E. PARTS E.1. RECOMMENDED SPARE PARTS A complete list of spare parts is available by contacting TSA Systems, Ltd. E.2. SPARE PARTS ORDERING INFORMATION To facilitate the processing of spare parts orders the following information is required. - Product Numb...
Page 30 - APPENDIX F. DRAWINGS page27
APPENDIX F. DRAWINGS page27 Model AM-255 F. DRAWINGS Please reference the drawings package provided with the instrument to view the following: AM-255 Pictorial View ................................................................................................................. 1 AM-255 Pictorial Vi...
