General Information
Manufacturer: B&R Industrial Automation (ABB Group)

Series: X20 System (Modular I/O Platform)

Model: X20SM1426

Type: 8-Channel Analog Input Module

Signal Type: ±10V, 0-10V, 0/4-20mA (software-selectable per channel)

Electrical Parameters
Analog Input Specifications
Channels: 8 (individually configurable)

Input Ranges (Voltage):

±10V DC (default)

0–10V DC

Input Ranges (Current):

0–20mA

4–20mA (with wire-break detection)

Resolution: 16-bit (including sign)

Accuracy: ±0.1% of full scale (typical at 25°C)

Sampling Rate: Up to 1kHz (all channels)

Input Impedance:

Voltage Mode: >1MΩ

Current Mode: 250Ω (internal shunt)

Power & Isolation
Internal Supply: 5V DC (from X20 backplane)

Field-Side Isolation: 500V (channel-to-channel & channel-to-system)

Power Consumption: 2.5W (typical)

Mechanical & Environmental
Dimensions (W×H×D): 30mm × 100mm × 70mm (standard X20 width)

Mounting: DIN rail (EN 60715)

Weight: ~180g

Protection Class: IP20 (for control cabinet use)

Operating Temperature: 0°C to +60°C

Storage Temperature: -40°C to +85°C

Humidity: 5–95% (non-condensing)

EMC Immunity: EN 61000-6-2

EMC Emissions: EN 61000-6-4

Diagnostics & Indicators
Per-Channel Status LEDs:

Green (ACTIVE): Signal within range

Red (ERROR): Overrange/wire break (4-20mA mode)

Module-Wide LEDs:

Power (green): 24V field supply OK

Communication (yellow/green): Bus activity

Configuration & Compatibility
Software Configuration: B&R Automation Studio

Channel-by-channel range selection

Filter settings (for noise suppression)

Scaling & calibration

Hot-Swappable: Yes

Compatible With:

All X20 bus controllers (e.g., X20BC0083)

B&R PLCs & Automation PCs

Certifications: CE, UL, RoHS

Typical Applications
Process variable monitoring (pressure, temperature via transmitters)

Motor control feedback (speed, torque signals)

Test & measurement systems

Energy management (current/voltage sensing)

Wiring & Connections
Terminal Type: Removable screw terminal block

Wiring Diagram:

Voltage Mode:

Pin 1 (+), Pin 2 (–) per channel

Current Mode:

Loop-powered: 2-wire (Pin 1 → sensor+ → sensor– → Pin 2)

4-wire: External supply (Pin 3 for +24V)