Part Number: VI461-250
Brand: Yokogawa Electric Corporation
Product Series: Industrial Communication Module Series
Product Type: High-Density Analog Input Communication Module
Core Application: Analog signal acquisition and remote transmission in process automation; compatible with Yokogawa DCS systems, suitable for industrial sites such as power, chemical, and petroleum to collect sensor signals.
Core Features: 16-bit high measurement accuracy; multi-range analog input support; built-in MODBUS-RTU protocol; anti-interference design; DIN-rail installation; online self-diagnosis; reverse polarity protection.
Electrical Specifications
Operating Voltage: 8V DC ~ 30V DC (wide voltage range, ±10% tolerance)
Power Consumption: ≤20mA (at 24V DC rated voltage)
Input Protection: Reverse polarity protection, overcurrent protection, surge protection (compliant with IEC 61000-4-5)
Analog Input Channels: 16 channels (differential input, configurable range)
Analog Input Ranges: 4-20mA DC, 0-10V DC; optional custom ranges via configuration
RS-485 Interface: 2-wire half-duplex, baud rate 2400 ~ 115200 bps (software configurable)
Supported Protocols: MODBUS-RTU (standard), compatible with PLC and configuration software
Measurement Accuracy: ±0.2% FS (full scale, 25℃ ambient temperature)
Resolution: 16-bit (1/32766 of full scale)
Sampling Rate: 3000 times/second (total channels, simultaneous sampling)
RS-232 Supported Protocols: ASCII, RTU (custom protocols supported)
RS-485 Transmission Distance: Up to 1200m (at 9600 bps, using shielded twisted pair)
Max Data Transfer Rate (RS-485): 115.2 kbps
Max Data Transfer Rate (CAN): 1 Mbps
Ethernet Transmission Distance: Up to 100m (Cat 5e/Cat 6)
RS-485 Transmission Distance: Up to 1200m (at 9600 bps)
CAN Transmission Distance: Up to 1000m (at 50 kbps)
Isolation: 2500V AC isolation between input channels and communication ports
ESD Protection: ±15 kV (contact/air) per IEC 61000-4-2 standard
Isolation (Communication Ports & Power Supply): 2500V AC
Isolation (I/O Channels): 1500V AC
Overvoltage/Undervoltage Protection Trigger Range: 24V DC ±15%, triggers alarm
Short-Circuit Protection: Auto-current limiting for DO channels, no damage on short-circuit
ESD Protection: ±8 kV (contact), ±15 kV (air) per IEC 61000-4-2
Overheating Protection: Auto-shutdown when temperature exceeds 85°C, auto-recovery after cooling
