Intelligent Relay and Isolator Bases A Division of Pittway 3825 Ohio Avenue, St. Charles, IL 60174 1-800-SENSOR2 (736-7672), Fax 630-377-6495 http://www.systemsensor.com Models Available B224RB Relay Base B524RB Relay Base B224BI Isolator Base B524BI Isolator Base Features • • • • • Easy plug-in of detector heads to bases Terminal block wiring Rugged industrial construction Designed for direct surface or electrical box mounting Relay bases provide: –Form C contact for control of auxiliary functions –Activation from the sensor head to remote annunciator output –Suitability for patient room annunciation, elevator recall, and pilot duty on fan shutdown and damper control • Isolator bases provide: –Isolation of short circuit –Automatic restore when short circuit is corrected –Suitability for NFPA 72, Style 7 applications The System Sensor intelligent relay and isolator bases are designed for use with 200 and 500 Series plug-in detectors. The complete line of relay and isolator bases is designed for reduced installation costs and optimum performance. Specifications Diameter: Height B224RB/BI: B524RB/BI: Weight: Mounting: Wiring Gauge: © System Sensor 4/97 6.2″ (157 mm) 1.2″ (31 mm) 1.4″ (36 mm) 5.76 oz. 4″ square box with or without plaster ring, or 3 1/2″ or 4″ octagonal box, min. depth 1.5″ (13 mm) 12–22 AWG, twisted pair recommended Operating Temperature Range: Operating Humidity Range: 32° F to 120° F (0° C to 49° C) 10% to 93% relative humidity (noncondensing) This document is not intended to be used for installation purposes. APPROVED A05-235-01 Electrical Ratings Operating Voltage: Standby Ratings: Set Time: 15 to 32 VDC <500 µA maximum @ 24 VDC 4 seconds minimum, 20 seconds maximum 1 second minimum, 8 seconds maximum Reset Time: Relay Characteristics (relay base only) Coil: 2 coil latching Contact Type: 1 Form C Contact Relay Resistive: 2 A @ 30 VDC Inductive: 0.3 A @ 110 VDC (with .35 PF or greater) 0.3 A @ 120 VAC (with .35 PF or greater) 1.0 A @ 30 VDC (with .6 PF or greater) B200/B500 Series Wiring Guide TWISTED PAIR RECOMMENDED TWISTED PAIR RECOMMENDED (+) (+) (–) (–) (–) (–) LISTED COMPATIBLE CONTROL PANEL (+) (S ) 4 ) 2 - COMM OUT (–) (– ) 2 (+ ) 3 2 - COMM IN (–) OTHER INTELLIGENT DEVICES (+) 1(+ LISTED COMPATIBLE CONTROL PANEL 3 - COMM OUT (+) OTHER INTELLIGENT DEVICES 1 - COMM IN (+) 1 (N.O.) 4 3 (+) (COMMON) 2 (N.C.) 5 (–) 6 (S) 3 RELAY COMMON 1 NORMALLY CLOSED 2 NORMALLY OPEN CLASS A OPTIONAL WIRING CLASS A OPTIONAL WIRING Isolator Base Relay Base Ordering Information Smoke Detector Base B224RB Relay 1251 ● B224BI B524BI 2251 2551 2551T 5551 5551R ● ● ● ● ● ● ● ● ● ● B524RB Isolator 1551 ● ● ● System Sensor Worldwide Manufacturing & Distribution In Canada: System Sensor Canada, A Division of Pittway Corporation of Canada 6581 Kitimat Road, Unit #7 Mississauga, Ontario Canada L5N 3T5 Telephone: 905-812-0767 Fax: 905-812-0771 Page 2 In the United Kingdom: System Sensor Europe, Ltd. A Member of Pittway Corporation Horsham Gates III, North St. Horsham, West Sussex RH13 5PJ, United Kingdom Telephone: 44-1403-276500 Fax: 44-1403-276501 In India: System Sensor India A Division of Pittway A-204 Maheshwari Nagar Orkay Mills Lane Andheri East, Mumbai 400093 Telefax: 91-022-8202564 In the Far East: System Sensor Far East A Division of Pittway Rm 903, Tower A, New Mandarin Plaza, 14 Science Museum Road TST East, Kowloon, Hong Kong Telephone: 852-2191-9003 Fax: 852-2736-6580 A05-235-01