Digital guide
You are here:
AEG AS-B855-016
- Product Introduction: AEG AS-B855-016 is a high-density 16-channel digital input module designed for the Modicon 800 series PLC systems, engineered for discrete signal acquisition from industrial field devices in factory automation and process control applications. The module features sinking (NPN) input logic, 24 V DC operation, and optical isolation between channels and the backplane bus, delivering reliable detection of dry contact and voltage signals from limit switches, proximity sensors, pushbuttons, and other discrete field devices even in high-noise industrial environments. It integrates seamlessly with the Modicon 800 series backplane bus, with individual LED status indicators for each channel and built-in surge protection, making it an ideal solution for high-volume discrete signal acquisition in automotive manufacturing, packaging, material handling, and municipal infrastructure applications requiring scalable digital input expansion.
- Technical Specifications:
- Number of Input Channels: 16 independent digital input channels, 2-wire connection
- Input Logic: Sinking (NPN), dry contact compatible
- Input Voltage: 24 V DC (18–30 V DC operating range)
- Input Current: 2.5 mA per channel at 24 V DC
- Response Time: <1 ms (on/off), configurable delay (0–100 ms) for noise filtering
Detailed content
-
- Isolation: 2500 V AC optical isolation (channel-to-backplane bus), 500 V AC channel-to-channel
- Protection Features: 2 kV ESD surge protection, reverse polarity protection, short-circuit protection
- Status Indicators: Individual green LED indicators for each channel (active signal), global power LED (red)
- Backplane Interface: Modicon 800 series proprietary bus, 10 Mbps data transfer rate, <0.5 ms latency
- Power Supply: 24 V DC (18–30 V DC) from PLC chassis, power consumption <1.5 W
- Operating Temperature: -25°C to +70°C, storage temperature -40°C to +85°C
- Vibration Resistance: 5–50 Hz, 0.5 g acceleration (IEC 60068-2-6)
- Shock Resistance: 10 g (11 ms, IEC 60068-2-27)
- Protection Class: IP20 (cabinet-mounted)
- Termination Type: Screw terminal blocks (20-pin), compatible with 0.5–2.5 mm² solid/stranded wire
- Dimensions: 80 mm (W) × 160 mm (H) × 60 mm (D)
- Weight: 0.55 kg
- Compliance: IEC 61131-2, CE, UL 508, RoHS
- Functional Features:
- 16 high-density sinking digital input channels enable cost-effective acquisition of multiple discrete signals in a single compact module, saving valuable PLC chassis space and reducing system hardware costs for high-volume discrete control applications.
- <1 ms ultra-fast response time supports high-speed discrete signal detection in automated manufacturing processes (e.g., packaging machinery, robotic assembly lines), enabling real-time control and quick response to field device signals.
- Configurable input delay (0–100 ms) provides adjustable noise filtering, allowing the module to ignore electrical transients and false signals from field wiring and sensors in high-noise industrial environments (e.g., near VFDs and motors).
- 2500 V AC optical isolation between channels and the backplane bus eliminates ground loops and electrical interference, ensuring accurate signal detection and protecting the PLC CPU from high-voltage transients in industrial field wiring.
- Individual green LED channel status indicators deliver instant visual feedback on signal activity, enabling fast on-site troubleshooting and system commissioning without the need for additional diagnostic tools.
- 2 kV ESD surge protection and reverse polarity protection safeguard the module from electrical transients, static discharge, and wiring errors, extending the module’s service life and minimizing downtime in industrial installations.
- Dry contact compatibility allows seamless connection to mechanical field devices (limit switches, pushbuttons) without additional voltage sources, simplifying wiring and reducing system component count.
- Seamless integration with the Modicon 800 series backplane bus enables plug-and-play installation and high-speed data transfer with the PLC CPU, with <0.5 ms latency for real-time discrete control.
- Low power consumption (<1.5 W) reduces the overall power draw of the PLC chassis, complying with industrial energy efficiency standards and minimizing heat generation in control panels.
- Wide operating temperature range (-25°C to +70°C) and vibration resistance ensure reliable performance in harsh industrial environments, including unconditioned control cabinets, outdoor installations, and high-vibration manufacturing machinery.
- Screw terminal blocks with captive screws ensure secure wire termination, preventing loose connections and electrical arcing in vibration-prone industrial environments (e.g., conveyor systems, metalworking equipment).
- Application Scenarios:
- Automotive manufacturing for discrete signal acquisition from proximity sensors, limit switches, and part presence detectors in robotic assembly lines, welding stations, and paint shops, with high-speed response for real-time robotic control.
- Packaging machinery for detecting conveyor belt position, product presence, and machine component status in filling, sealing, and labeling equipment, with configurable noise filtering for reliable signal detection in high-vibration machinery.
- Material handling systems for acquiring signals from conveyor limit switches, hoist position sensors, and pallet detection devices in logistics and warehousing facilities, with high-density channels for scalable system expansion.
- Food and beverage production for detecting the position of packaging machine components, fill level switches, and conveyor sensors in washdown-compatible control cabinets, with rugged design for humid industrial environments.
- Water and wastewater treatment for monitoring float switch status, valve position indicators, and pump run/stop signals in remote lift stations and treatment process lines, with isolation for reliable operation in noisy industrial electrical environments.
- Building automation for monitoring contact status of fire alarm sensors, access control readers, and HVAC damper/valve position switches in large commercial and industrial buildings, with compact design for control panel installation.
- Metalworking and machining for acquiring signals from machine tool limit switches, tool position sensors, and safety interlocks in CNC machines and milling equipment, with high-speed response for precise machine control.
- Pharmaceutical manufacturing for detecting the position of batch process equipment, door interlocks, and sensor signals in GMP-compliant production facilities, with reliable signal acquisition for process traceability and safety.
