The Allen-Bradley 1777-OA AC Output Module is a digital output module designed for industrial automation systems, providing reliable control over AC-powered devices.
Key Features
- Output Channels: 8 outputs for versatile control applications.
- Operating Voltage: 120 VAC at 50/60 Hz, suitable for standard AC power systems.
- Current Capacity: Each output supports up to 1.5 Amperes, with a total module capacity of 6 Amperes.
- Compatibility: Seamlessly integrates with Allen-Bradley PLC systems, enhancing system functionality.
Technical Specifications
- Output Voltage Range: 92 to 138 VAC.
- Output Frequency: 47 to 63 Hz.
- Surge Current: 4 Amperes per output for 8.3 milliseconds at 120 VAC, repeatable every 1 second.
- Minimum Load Current: 50 milliamperes per output at 120 VAC, 60 Hz.
- On-State Voltage Drop: 2 Volts at 100 milliamperes.
- Off-State Leakage Current: Maximum of 5 milliamperes per output at 120 VAC.
- Power Dissipation: 1.1 to 10.7 Watts.
- Thermal Dissipation: 3.4 to 36.6 BTU/hr.
- Backplane Current: 210 milliamperes at 5 VDC.
- Isolation: Opto-electrical isolation tested to 1500 VAC rms for 2 seconds.
Installation and Compatibility
- Mounting: Designed for rack mounting in 1771 I/O chassis.
- Field Wiring Arm: Utilizes catalog number 1771-WA for secure connections.
- Wiring Specifications: Supports 14-22 AWG stranded copper wire rated at 75°C or greater, with a maximum insulation of 3/64 inch (1.2mm).
- Keying: Configured between 4 and 6, and between 12 and 14, ensuring proper module placement.
- Fuses: Equipped with 12 A, 250 V Buss AGC2 fuses for circuit protection.
The 1777-OA module is engineered to deliver dependable performance in controlling AC-powered devices within industrial settings, ensuring efficient and safe operation.
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