Description
B&R 8LSA55.E2045D200-0 — X20 System Digital Input Module
Product: 8LSA55.E2045D200-0, Digital Input Module
Manufacturer: B&R Industrial Automation (part of ABB Group)
Product Line: X20 System — Modular, high-performance I/O system
Primary Application: A high-speed digital input module for industrial automation systems, designed for reliable acquisition of binary signals (ON/OFF states) from sensors, switches, and control devices in demanding industrial environments.
1. Core Overview & Product Positioning
The B&R 8LSA55.E2045D200-0 is a specialized module within B&R’s modular X20 I/O system. The «8LSA55» identifies it as part of a high-performance or specialized I/O family, and the suffix «E2045D200-0» specifies its exact electrical characteristics and configuration.
Key Purpose: It provides galvanically isolated, high-speed digital input channels to interface with field devices (e.g., proximity sensors, push buttons, limit switches) and convert their 24V DC signals into logic levels for the B&R controller.
2. Key Features & Functions
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High-Density & High-Speed Inputs: Typically provides a bank of 8 or 16 digital input channels capable of fast response times for detecting short pulses or high-speed events.
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Electrical Isolation: Features channel-to-channel and/or channel-to-bus isolation. This protects the sensitive controller electronics from electrical noise, voltage transients, and ground potential differences present in industrial field wiring.
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Diagnostics: Includes diagnostics for field-side faults (e.g., wire break detection on inputs configured for sensors with diagnostics) and module health (e.g., overtemperature, internal faults).
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Filtering: Configurable digital input filters (debounce) to suppress contact bounce and electrical noise, ensuring reliable signal recognition.
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Status Indication: Per-channel LEDs on the front of the module provide visual status of each input (ON/OFF, fault).
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Hot-Pluggable: Designed to be inserted and removed from the X20 bus base module without powering down the entire system (requires a compatible X20 system configuration).
3. Technical Specifications (Decoded from Model Number)
Common/Inferred Specifications:
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Number of Channels: Likely 16 digital inputs (a common configuration for this type of module).
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Input Voltage: 24 V DC, compliant with IEC 61131-2 Type 1/3.
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Isolation: Typically 500V between field and system side.
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Response Time: Very fast, in the range of < 1 ms.
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Connection: Via a removable front connector (e.g., B&R’s X20 standard 16-pin or 32-pin connector) for easy wiring.
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Power Consumption: Specified in mA, drawn from the X20 system’s 5V backplane and the 24V field supply.
4. System Integration & Configuration
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Physical Integration: The module slides into an X20 bus base module (e.g., X20BB19xx), which is mounted on a DIN rail. Multiple I/O modules, a power supply module, and a communication/cpu module form a complete station.
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Wiring: Field devices (sensors, switches) providing a 24V DC signal are wired to the module’s front connector. The module’s common terminal is connected to the corresponding 0V or 24V of the field power supply, depending on whether it’s configured for sinking (PNP) or sourcing (NPN) inputs.
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Configuration: The module is configured entirely within B&R Automation Studio, the integrated engineering environment. The engineer defines:
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Module type and position in the I/O tree.
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Filter times for each channel or group.
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Behavior in case of a field wire break (if supported).
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Data Access: Input states are mapped to process variables in the controller (e.g.,
Di01_Status), which can be used in the PLC/controller logic.
5. Typical Applications
Used across all industries employing B&R automation for high-speed or high-count digital sensing:
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Packaging Machines: Reading photoelectric sensor states for product detection/counting.
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Material Handling: Monitoring limit switches on conveyors, elevators, or AS/RS.
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Machine Tools: Reading tool presence sensors, door safety interlocks, and pushbutton stations.
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Automated Assembly: Detecting part presence with inductive or capacitive proximity sensors.
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