Technical Specifications:

• Number of Channels: 4
• Input Signal Type: 0 to 10 V DC / 0 to 20 mA / 4 to 20 mA (selectable per channel)
• Resolution: 12-bit (4096 steps)
• Input Impedance (Voltage Mode): ≥ 100 kΩ
• Input Impedance (Current Mode): 250 Ω (for 0-20 mA) / 125 Ω (for 4-20 mA)
• Accuracy: ±0.1% of full scale
• Conversion Time: ≤ 1 ms per channel
• Supply Voltage: 24 V DC (nominal), range 20.4 V to 28.8 V
• Power Consumption: ≤ 2.0 W
• Isolation: Channel-to-channel galvanic isolation, 500 V DC
• Isolation to Bus: 500 V DC
• 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:

• Independent configuration per channel (voltage or current)
• 12-bit A/D conversion with high linearity
• Overvoltage protection on each input (up to 30 V DC)
• Reverse polarity protection on current inputs
• Diagnostic LED per channel
• Integrated filter for noise suppression
• Fully compatible with B&R Automation Studio

Structural Characteristics:

• DIN rail mounting (TS 35)
• Spring-loaded plug-in terminal connectors
• ABS plastic housing with high mechanical strength
• Front-facing LED status indicators
• X20 bus connector on bottom edge

Working Principle:
Analog signals from field sensors enter the module through protected input terminals. Each channel passes through an input protection circuit (overvoltage and reverse polarity protection). A multiplexer routes the selected channel to a 12-bit successive approximation ADC. The digital result is transferred to the controller via the X20 bus. Channel isolation is maintained via optocouplers.

Advantages & Highlights:

• 4 independent channels with per-channel configuration flexibility
• 12-bit resolution delivers high measurement precision
• Robust input protection guards against field wiring errors
• Galvanic isolation ensures noise-free signal acquisition
• Hot-swap capability in X20 systems

Applicable Industries:

• Chemical and petrochemical plants
• Water and wastewater treatment
• HVAC systems
• Process control in food industry
• Pharmaceutical manufacturing
• Energy management systems

Installation Requirements:

• Mount on DIN rail (TS 35 x 7.5 or TS 35 x 15)
• Maintain minimum 10 mm spacing between modules for heat dissipation
• Use shielded cables for analog signal wiring
• Connect cable shield to ground at one end only (controller side)
• Connect to X20 system base module

Usage Precautions:

• Never apply voltage exceeding 30 V DC to any input terminal
• For 4-20 mA inputs, ensure loop power is provided externally
• Verify input range setting matches connected transmitter output
• Do not leave current input terminals open-circuited when loop is energized