THORN GRINNELL OXA-504SDA AUTOCALL SIGNAL DRIVER AMPLIFIER 976216

Description:

The Thorn Grinnell OXA-504SDA Autocall Signal Driver Amplifier (P/N 976216) is used in addressable fire alarm control systems to activate and supervise notification appliance circuits for audible and visual alarm devices. Commonly installed in Autocall TFX-500 and TFX-800 fire alarm systems controlling horns, strobes, bells, and other notification appliances in commercial buildings, industrial facilities, hospitals, schools, and institutional life safety installations. Fire alarm technicians and system integrators use this signal driver module for new system installations, preventive maintenance, system expansion, and replacement of failed notification control modules.

Applications:

The Thorn Grinnell OXA-504SDA signal driver amplifier provides supervised notification appliance circuit control by receiving commands from compatible Autocall fire alarm control panels and activating external alarm devices from a separate 24 VDC regulated power supply. It is widely used in commercial and industrial fire detection systems requiring supervised Style Y or Style Z notification appliance circuits for horns, strobes, speakers, and relay bases while continuously monitoring for open circuits, short circuits, relay faults, and power supply failures.

Technical Specifications:

• Brand: Thorn Grinnell / Autocall
• Model: OXA-504SDA
• Part Number: 976216
• PCB Number: 940574
• Product Type: Addressable Signal Driver Amplifier Module
• Function: Notification Appliance Circuit Signal Driver
• Compatible Systems: Autocall TFX-500 and TFX-800 Fire Alarm Control Panels
• Addressable Loop Voltage: 28 VDC (Polarity Sensitive)
• Input Voltage: 24 VDC Nominal
• Standby Current: 10 mA (Power Supply)
• Alarm Current: 150 mA (Power Supply)
• Addressable Supervisory Current: 0.35 mA
• Maximum Output Rating: 2.5 ARMS
• Compatible Wiring Styles: NFPA 72 Style Y and Style Z
• End-of-Line Resistor: 22 kΩ (P/N 976042)
• Operating Temperature: 32°F to 120°F (0°C to 49°C)
• Operating Humidity: Up to 85% Non-Condensing
• Mounting Type: Surface Electrical Box
• Application: Fire Alarm Notification Appliance Control Module

Common Replacements:

• Autocall OXA-500SDA 976091
• Autocall OXA-501SDA 976186
• Autocall OXA-502SDA 976217