Yokogawa 701266 Analog Voltage Input Module

The Yokogawa 701266 Analog Voltage Input Module is a precision data acquisition component designed to measure and convert analog voltage signals into digital data for control and analysis applications. The module integrates with Yokogawa FA-M3 controller systems and delivers high-accuracy voltage measurements across selectable input ranges with photocoupler isolation between input terminals and internal circuitry.

– Technical Specifications

• Input Ranges: 0 to 5 V DC, 1 to 5 V DC, −10 to 10 V DC, 0 to 10 V DC (selectable)
• Measurement Accuracy: ±0.1% of full scale at 23±2°C
• Conversion Cycle: Selectable from 50 µs, 100 µs, 250 µs, 500 µs, 1 ms, 16.6 ms, 20 ms, or 100 ms
• Number of Inputs: Four or eight differential signal inputs per module
• Common-Mode Voltage: ±6 V DC maximum
• Input Resistance: 1 MΩ minimum
• Maximum Resolution: 0.4 mV (16-bit A/D converter)
• Input Isolation: Photocoupler isolation; 500 V DC withstanding voltage for one minute
• Absolute Maximum Rating: 18 V DC or 25 mA DC
• Power Supply: 24 V DC
• Operating Temperature: 0°C to specified upper limit
• Weight: Approximately 120 g

– Key Features

• Wide selectable input voltage ranges accommodate diverse sensor and signal types
• Fast conversion speeds down to 50 µs per point enable real-time data capture
• Photocoupler isolation provides robust noise rejection in industrial environments
• High input impedance (1 MΩ) minimizes loading effects on source circuits
• Pressure clamp terminals and optional MIL connector cables for flexible field wiring

– Typical Applications

• Industrial process measurement and monitoring
• Precision test and measurement systems
• Control system feedback acquisition
• Multi-channel voltage signal digitization

– Compatibility & Integration

The module integrates with Yokogawa FA-M3 controller platforms, extending their analog measurement capabilities within distributed control architectures.