Technical Specifications:

• Number of Channels: 32
• Input Type: 24 V DC (PNP/NPN selectable per group)
• Input Voltage (HIGH): 15 V DC to 30 V DC (PNP mode) / 0 V to 10 V DC (NPN mode)
• Input Voltage (LOW): 0 V to 5 V DC (PNP mode) / 15 V to 30 V DC (NPN mode)
• Maximum Input Frequency: 100 kHz per channel
• Response Time: ≤ 1 µs (typical at 100 kHz)
• Supply Voltage: 24 V DC (nominal), range 20.4 V to 28.8 V
• Power Consumption: ≤ 3.0 W
• Isolation: Channel-to-channel galvanic isolation, 500 V DC
• Isolation to Bus: 500 V DC
• Counter Function: Built-in 32-bit hardware counter per channel
• Operating Temperature: 0 °C to +55 °C
• Storage Temperature: -25 °C to +70 °C
• Relative Humidity: 5% to 95% (non-condensing)
• Dimensions (W x H x D): 22.5 mm x 120 mm x 79.5 mm
• Weight: Approximately 150 g

Functional Features:

• 32 high-speed digital inputs
• Hardware 32-bit counter per channel (no CPU load for counting)
• Frequency measurement up to 100 kHz
• Pulse width measurement
• PNP/NPN configuration per channel group via software
• Input filter adjustable: 0.5 µs to 25.6 ms
• Overvoltage protection up to 30 V DC
• Diagnostic LED per channel
• Compatible with B&R Automation Studio

Structural Characteristics:

• DIN rail mounting (TS 35)
• Plug-in terminal connectors with spring clamps
• ABS plastic housing
• Front-facing LED status indicators (32 channels)
• X20 bus connector on bottom edge

Working Principle:
High-speed signals from encoders, proximity sensors, or pulse generators enter the module. Each channel has a dedicated hardware counter that increments on each rising (or falling) edge, completely independent of the controller scan cycle. This ensures no pulses are lost even at 100 kHz. The counter value is read by the controller via the X20 bus on demand. Input conditioning includes optocoupler isolation and a Schmitt trigger. The debounce filter is optimized for high-speed operation with minimal delay.

Advantages & Highlights:

• 32 channels — highest density in X20 digital input family
• Hardware counters eliminate CPU load for counting tasks
• 100 kHz frequency support covers most encoder and pulse applications
• PNP/NPN flexibility fits all standard sensors
• Galvanic isolation ensures signal integrity at high speeds

Applicable Industries:

• CNC machine tool control (encoder feedback)
• Printing press registration
• Web handling and tension control
• High-speed sorting and counting
• Robotics (joint position feedback)
• Elevator and lift control

Installation Requirements:

• Mount on DIN rail (TS 35 x 7.5 or TS 35 x 15)
• Connect to X20 base module or X20 system bus
• Use shielded twisted-pair cables for encoder signals (A, B, Z channels)
• Keep signal cables away from power cables (minimum 100 mm separation)
• Terminate shield at controller end only

Usage Precautions:

• Maximum input frequency is 100 kHz — do not exceed
• Configure PNP/NPN mode to match sensor type before operation
• For encoder applications, use differential line driver outputs where possible
• Set input filter to minimum value for high-speed signals
• Verify counter overflow handling in application logic (32-bit counter rolls over at 4,294,967,295 counts)