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Schneider AEG AS-B805-016 Discrete Input Module
Schneider AEG AS-B805-016
1. Overview
The AS-B805-016 is a discrete input module belonging to the Schneider AEG (formerly Gould) Modicon series PLCs, specifically engineered for 115 VAC power supply systems. Equipped with 16 independent input points, this module enables direct connection to field switches, sensors, or relay signals, making it ideal for applications in industrial automation, process control, and machine safety.
2. Key Specifications
| Specification | Description |
|---|---|
| Model | AS-B805-016 |
| Type | 16-point discrete input module |
| Rated Voltage | 115 VAC (supports 80–130 VAC) |
| Number of Points | 16 independent input points |
| Input Mode | Relay/switch type (dry contact) |
| Terminal Block | Screw terminal block for easy field wiring |
| Module Dimensions | Standard 1U (or 1-slot) module, compatible with racks such as Modicon TSX-Compact and Modicon M84A-002 |
| Operating Temperature | -20 °C to +55 °C (industrial standard) |
| Protection Class | IP20 (for internal rack use) |
| Compatibility | Suitable for platforms including Modicon TSX-Compact, Modicon M84A-002, Modicon M340, and Modicon Quantum |
3. Product Features
- High Reliability: Utilizes industrial-grade terminal blocks and high-temperature resistant materials, complying with the IEC 60947-4-1 standard.
- Plug-and-Play: Modular design allows direct insertion into the rack backplane, requiring no additional wiring or programming for immediate use.
- Wide Voltage Tolerance: Supports 80–130 VAC, adapting to grid fluctuations in different regions.
- Misconnection Prevention: The terminal block features an anti-misalignment design to reduce the risk of field wiring errors.
- Easy Maintenance: Modular structure facilitates quick replacement, inspection, and fault location.
4. Structure and Components
- Backplane Connector: Standard Modicon rack backplane slot, providing power supply, grounding, and signal bus connectivity.
- Terminal Block: 16 sets of screw terminals, with each set corresponding to one input point and marked with a unique number and voltage identifier.
- Internal Optocoupler Isolation: Each input point incorporates optocoupler isolation to prevent high-voltage surges from being transmitted to the PLC host.
- Protective Housing: A metal housing offers mechanical protection and meets the IP20 protection class requirements.
5. Typical Application Areas
| Industry | Application Examples |
|---|---|
| Manufacturing | Discrete signal acquisition for machine safety doors, limit switches, and emergency stop buttons |
| Process Control | Field switch input for valves, flow meters, temperature switches, etc. |
| Energy | Status monitoring of power distribution cabinets and relay protection devices |
| Building Automation | Lighting control, access control systems, and fire alarm input |
| Transportation Facilities | Track signal detection, gate barrier control, and train door status monitoring |
6. Installation and Maintenance Guidelines
Pre-Installation Inspection
- Verify that the rack backplane power supply is set to 115 VAC and ensure the power is turned off.
- Check the module for physical damage and inspect the integrity of all terminals.
Rack Insertion
- Align the module with the backplane slot and gently push it until the locking clips engage.
- Confirm that the clips on both sides of the module are securely fastened to prevent vibration-induced disconnection.
Wiring
- Use the screw terminals to connect field switch/sensor wires to the corresponding numbered terminals.
- Before wiring, confirm that the signal voltage falls within the 80–130 VAC range.
- Tighten the terminal screws after wiring to prevent loosening.
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