Omniguard 760 series Installation And Operating Service Manual

Flame detector

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760 SERIES OPTICAL

FLAME DETECTORS

Installation and operating

service manual

Table of Contents

Summary of Contents for Omniguard 760 series

Page 1 760 SERIES OPTICAL FLAME DETECTORS Installation and operating service manual...
Page 2: Table Of Contents
A discharge of static electricity from an ungrounded source, including the human body, may damage the electronic circuitry of the Omniguard® Series 760 Flame Detectors . Use one or more of the following methods when handling or installing electrostatic sensitive parts: •...
Page 3: Description
Fire Detection Performance The Model 760 flame detector is designed to function properly The Omniguard® 760 flame detector is an optically based, when operated under the conditions outlined in the “fire detetion performance”, “false alarm immunity” and “fire detection in the self-contained, microprocessor controlled, multi-spectrum presence of false alarm sources”...
Page 4 False Alarm Immunity Long Distance Sensitivity: All tests were performed outdoors and third party certified for no • Sunlight response at the recommended distances . These distances should be • 1500 Watt ribbon heater at 20 ft . used as a guide when installing the detectors . •...
Page 5: Theory Of Operation
. This self-interrogation process is implemented a minimum of four The Omniguard® 760 flame detector is a multi-spectrum, infrared times per hour, thereby providing vital fire detection reliability . This sensing, fire detector .
Page 6: Specifications
Specifications Mechanical Specification (Figure 5 Shows Nominal Dimensions) Environmental Depth: 4 .9 inches [124 .97 mm](Max) • Suitable for use in hazardous locations: Height: 4 .8 inches [122 .43 mm](Max) Class I, Division 1, Groups B, C & D Class II, Division 1, Groups E, F & G Width: 5 .5 inches [140 .21 mm](Max) Type 4X rated .
Page 7: Applications
Applications 6 . Use a 20 to 30 Vdc regulated and filtered power supply, with a ripple not exceeding 1 percent . The detectors should be protected from induced and transient voltages as well as radio frequency interference The Model 760 flame detector is designed for fire detection (RFI) .
Page 8 Relay Adjustments There are two relays and configuration option jumpers, JP1 and JP2, located on the exposed surface of the printed circuit board (PCB) in the housing assembly . Using these jumpers, the relays may be configured as normally open or closed . The factory will ship the detectors with the following settings .
Page 9 Table 2: Milliamp Logic Chart digit . Then it will hold the amber LED “ON” constantly for about 10 seconds . Next, the detector will repeat this sequence . This process will Priority State Load Current mA continue for up to 5 minutes . Fire 20 ±...
Page 10 MODBUS RTU Response Table 11: Byte Definition for Delay Time Decimal Based on the commands from Table 6, the read functions from the Bit 7:4 Bit 3:0 Flame Detector are functions 1, 2, 3 and 7 . In response to these commands the Flame Detector will follow the PDU format illustrated BCD of tenth’s digit Always cleared...
Page 11: Maintenance And Troubleshooting
Detector, that any suppression or alarm systems be disabled . (less than 1 percent) supply voltage; power supply filtering may be Omniguard® 760 Series Flame Detector is designed for years of necessary to improve performance . In areas that are unprotected from trouble-free operation with minimal attention .
Page 12: Service And Repair
The warranty period is thirty-six (36) months for the Omniguard® “ON” (switch position 1) . 760 Series Flame Detectors and five (5) years for the IR Sensors . If the detector fails manual test and activates the fault outputs or if...
Page 13: Part Number Key
Ordering information To order, please specify Type: Ordering number: Designation: Omniguard® model 760 760 - X X X X X Multi-spectrum infrared flame detector Fire type 0 Hydrocarbon/non-hydrocarbon Approval 1 Hydrocarbon (only available with Approval 3) FM, SIL2, CSA, Russian Fire Certificate,...
Page 16 Firefly AB Phone: +46 (0)8 449 25 00 Fax: +46 (0)8 449 25 01 E-mail: omniguardsales@firefly .se www .omniguardbyfirefly .se Address Heliosgatan 3 120 30 Stockholm Sweden Publication No . 1031231 Rev . D...