Description
Allen-Bradley 1771-IA2 Digital Input Module | 120V AC/DC Compatibility
The Allen-Bradley 1771-IA2 provides reliable digital input capabilities for Rockwell Automation’s PLC-5 control systems. This versatile module accepts both AC and DC signals, making it ideal for various industrial applications requiring flexible input options with robust performance.
Technical Specifications
- Brand: Allen-Bradley / Rockwell Automation
- Model Number: 1771-IA2
- Product Type: Digital Input Module
- Series Compatibility: PLC-5 Series A
- Input Channels: 8 Independent Inputs
- Voltage Rating: 120V AC/DC
- AC Operating Range: 87-138V AC
- DC Operating Range: 97-138V DC
- Backplane Current: 75 mA
- Off-State Current: 2.8 mA Maximum
- AC Response Time: 24ms (±10ms) On/Off
- DC Response Time: 10ms (±4ms) On, 20ms (±9ms) Off
- Power Dissipation: 10.7W Maximum
- Thermal Dissipation: 36.5 BTU/hr
- Isolation Voltage: 1500V AC Input-to-Backplane
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Status Indicators: 8 Orange LED Field-Side Indicators
- Dimensions: 89mm × 165mm × 51mm (3.5″ × 6.5″ × 2.0″)
- I/O Addressing: ½, 1, and 2-Slot Configurations
Installation Features
- Includes 1771-WA wiring arm for easy module replacement
- Keying bands between pins 10-12 (upper) and 4-6 (lower)
- Installs in any 1771 I/O chassis with PLC processor
- Modular design saves space in control enclosures
- Simple installation without specialized tools
Packaging & Delivery
- Each 1771-IA2 module includes installation documentation
- Protected packaging prevents damage during shipping
- Worldwide shipping via FedEx, UPS, and DHL carriers
- Express delivery options available for urgent requirements
- Standard order processing within 1-2 business days
Protection Coverage
- 12-month coverage against manufacturing defects
- Comprehensive protection for normal operating conditions
- Quick replacement process for verified issues
- Technical support available throughout coverage period
Frequently Asked Questions
- Q: What types of sensors work with the 1771-IA2 module?
A: The module works with AC/DC proximity switches, pushbuttons, and limit switches - Q: How many input points does this module provide?
A: The 1771-IA2 offers 8 independent digital input channels - Q: What is the response time for DC signals?
A: DC signals have 10ms (±4ms) on delay and 20ms (±9ms) off delay - Q: Does this module include status indicators?
A: Yes, it features 8 orange LED indicators for field-side status - Q: Can I replace the module without disconnecting wiring?
A: Yes, the included wiring arm allows replacement without disconnecting wires
Comparison Products
Explore other Allen-Bradley modules: 1771-HODS ODS Converter and 1771-HRA Resolver Module.
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