Technical Specifications:

• Number of Channels: 8 (differential or single-ended)
• Input Type: Voltage: ±10 V, ±5 V, 0–10 V / Current: 0–20 mA, 4–20 mA
• Resolution: 16 bit (65,536 steps)
• Accuracy: ±0.1% of Full Scale (FS)
• Sample Rate: Up to 10 kS/s (aggregate, all channels)
• Isolation: Channel-to-channel galvanic isolation, 500 V DC
• Input Impedance (Voltage): > 1 MΩ
• Input Impedance (Current): 250 Ω (with internal burden resistor for 4–20 mA)
• Common Mode Rejection Ratio (CMRR): > 120 dB
• Supply Voltage (Bus): 24 V DC (from X67 bus)
• Operating Temperature: 0°C to +55°C
• Storage Temperature: -25°C to +70°C
• Dimensions (W x H x D): 72 mm x 90 mm x 115 mm
• Weight: Approx. 0.25 kg

Functional Features:

• 8 independently configurable analog input channels
• Selectable per channel: Voltage (±10 V, ±5 V, 0–10 V) or Current (0–20 mA, 4–20 mA)
• 16-bit A/D converter per channel with simultaneous sampling capability
• Channel-to-channel isolation (500 V DC) eliminates ground loop issues
• Diagnostic functions: Wire break detection, short-circuit detection, overrange detection per channel
• LED status indicators per channel (green = OK, red = fault)
• Software-configurable via B&R Automation Studio (range, scaling, filtering)
• Differential or single-ended input mode selectable per channel

Performance Parameters:

• Accuracy (at 25°C): ±0.1% FS
• Linearity Error: ±0.05% FS
• Temperature Drift: ±10 ppm/°C
• Settling Time: < 10 µs
• Noise (RMS): < 1 µV (voltage mode), < 10 nA (current mode)
• Power Consumption (Bus): < 2 W
• MTBF: > 100,000 hours (at 25°C)

Material Composition:

• Housing: Flame-retardant PA66 (polyamide 6.6) with glass fiber reinforcement
• Terminals: Tin-plated copper alloy with spring-cage connection
• PCB: FR-4 glass fiber epoxy laminate, conformally coated
• Isolation Barrier: Reinforced insulation, >500 V DC rating
• Connectors: Gold-plated pins for X67 bus connection

Structural Features:

• DIN rail mountable (TS 35, EN 60715)
• Front-facing X67 bus connector
• Spring-cage terminal connections for fast, tool-free wiring
• 8 LED indicators on front panel (one per channel)
• Module width: 72 mm (X67 standard width)

Working Principle:
The X67AD0000 receives analog signals from field transmitters via its 8 input channels. Each channel contains a 16-bit A/D converter that samples the analog input and converts it to a digital value. The input stage includes a programmable gain amplifier (PGA) and a multiplexer that allows selection of voltage or current range per channel. Channel-to-channel galvanic isolation is achieved through high-frequency transformer isolation or optical isolation barriers, ensuring that each channel operates independently with no cross-talk. The digital values are transmitted to the controller via the X67 bus using a cyclic data exchange protocol.

Advantages & Highlights:

• 8 channels with full isolation — ideal for multi-transmitter applications
• 16-bit resolution — excellent for precision measurement
• Voltage AND current input — one module replaces two separate modules
• Simultaneous sampling — all 8 channels sampled at the same instant
• Comprehensive diagnostics — wire break, short circuit, overrange per channel
• Wide input range selection — covers most standard transmitter signals

Applicable Industries:

• Process automation (chemical, petrochemical, pharmaceutical)
• Water and wastewater treatment
• Oil and gas monitoring
• Power generation
• HVAC and building automation
• Food and beverage processing

Installation Requirements:

• Mount on DIN rail TS 35 (EN 60715)
• Connect to X67 system bus via front-facing connector
• Use shielded twisted-pair cables for all analog inputs
• Ground the cable shield at the control cabinet end only (single-point grounding)
• For current inputs (4–20 mA), ensure loop supply ≥ 24 V DC
• For voltage inputs, use low-impedance sources (< 100 Ω source impedance)
• Do not exceed ±10 V on any voltage input channel

Usage Precautions:

• Do not apply voltage > ±10 V to any input channel (will damage the module)
• Do not leave current inputs open-circuit while powered (may cause erratic readings)
• Use shielded cables and ground at one end only
• Verify input range configuration in software before connecting field devices
• Do not mix voltage and current inputs on the same channel
• Ensure proper bus power (24 V DC, min. 2 A for X67 system)