Product Description: ECE243-0 (E243) Digital Input Module

1. General Description

2. Key Features

• 24 Sink-Type Digital Input Channels: Twenty-four 24 VDC input channels for general-purpose industrial signal acquisition.

• Dual Electrical Isolation: Inputs are divided into two fully galvanically isolated groups (12 channels per group), enhancing system safety and noise rejection.

• Fixed Input Filtering: Built-in 10 ms debounce filter ensures stable signal detection and eliminates contact bounce.

• LED Status Indicators: Individual front-panel LEDs for each channel to indicate real-time input ON/OFF status.

• Compact Single-Slot Design: Occupies one slot in a standard MULTI/MIDI rack, maximizing cabinet space efficiency.

• Industrial-Grade Isolation: High isolation voltage between input groups and the system backplane.

• Screw Terminal Connection: Front-facing terminals for secure and straightforward field wiring.

• Wide Operating Temperature Range: Suitable for use in harsh industrial environments.

• CE Certified: Complies with European EMC and safety standards.

• Legacy System Compatibility: Fully compatible with all B&R MULTI and MIDI series controllers and backplanes.

3. Technical Specifications

Input & Performance Data

• Number of Inputs: 24 channels (sink-type, NPN only)

• Nominal Input Voltage: 24 VDC

• Input Voltage Range: Approx. 18 VDC to 30 VDC

• Input Current (Typical): Approx. 8 mA per channel at 24 VDC

• Input Resistance: Approx. 3 kΩ

• Switching Threshold (ON): Min. 14 VDC (Logic High)

• Switching Threshold (OFF): Max. 5 VDC (Logic Low)

• Input Delay / Filter Time: 10 ms (fixed)

• Isolation Voltage:

  • Between input groups and backplane: 500 VDC

  • Between the two isolated input groups: 500 VDC

• Isolation Type: Optoelectronic isolation

Electrical Data

• Power Supply: Derived from the system backplane (+8 VDC)

• Power Consumption: Approx. 0.3 W

• Overvoltage Protection: Integrated transient voltage suppression

Mechanical Data

• Form Factor: Single-slot module for MULTI/MIDI racks

• Dimensions (W x H x D): Approx. 35 mm x 152 mm x 229 mm

• Weight: Approx. 0.25 kg

• Mounting: Direct insertion into B&R MULTI/MIDI backplane

• Field Connection: Screw terminal block (0.5 – 1.5 mm² wire)

• Protection Rating: IP20 (front face)

Environmental Data

• Operating Temperature: -25°C to +70°C

• Storage Temperature: -40°C to +85°C

• Relative Humidity: 5 – 95% RH, non-condensing

• Vibration Resistance: Complies with IEC 60068-2-6

• Shock Resistance: Complies with IEC 60068-2-27

• Pollution Degree: 2

Safety & Certifications

• EMC Compliance: EN 61000-6-2, EN 61000-6-4

• Safety Standards: EN 61131-2

• Certifications: CE

4. Typical Applications

• Machine Automation: High-channel-count applications like packaging machines, assembly lines, and material handling systems.

• Signal Separation: Isolating safety circuits, high-noise sensors, or different voltage zones within a single machine.

• Factory Automation: Connecting numerous sensors, switches, and operator controls.

• Material Handling: Conveyor systems, palletizers, and sorting machines with many I/O points.

• Legacy System Maintenance: Direct replacement for aging E243 modules in existing installations.

• Industrial Retrofits: Updating input systems in older production equipment requiring isolated inputs.

• Process Control: Monitoring valve positions, level switches, and discrete alarm signals.

5. Configuration & Integration

• System Compatibility: Seamlessly integrates with all B&R MULTI and MIDI CPU and I/O racks.

• Status Indicators:

  • Channel LEDs (Green): Illuminates when the corresponding input channel is active (ON state).

• Isolation Grouping: Inputs are factory-configured into two isolated groups (e.g., Channels 1-12: Group 1; Channels 13-24: Group 2).

• Wiring: Field devices are connected via front-mounted screw terminals. Wiring must respect group isolation boundaries.

• Software Integration: Automatically recognized by B&R system configuration software; no user-configurable parameters required.

• Diagnostics: Channel LEDs provide immediate visual feedback for quick troubleshooting and maintenance.

6. Ordering Information

• Base Part Number: ECE243-0

• Alternative Part Number: E243

• Standard Package: 1 x ECE243-0 Digital Input Module

• Warranty: Standard 1-year manufacturer warranty