XRW2G Specifications

Sensor Inputs

Counters / Anemometers

• Three digital anemometer inputs
• Supports dry contact switch, hall effect switch, or TTL level signal
• RC low pass filter on each input (f_c=159 Hz)
• Inputs pulled to 5 volts with internal 4.7k resistor
• Measures pulses falling edge to falling edge
  • Pulse time (100 microsecond resolution)
  • Pulse minimum time (100 microsecond resolution)
  • Number of pulses since last measurement (2^16 or 0 to 65,535)
  • Number of pulses total, resettable (2^32 or 0 to 4,294,967,296)

Analog

• Eight analog inputs, 12 bit (2^12 or 0 to 4095)
  • 1 x 0 to 100 volt, connect to input power jack
  • 2 x 0 to 5 volt, with 200k pull down resistors (typically wind vanes)
  • 1 x 0 to 5 volt, with 4.7k pull up resistor (typically temperature)
  • 4 x 0 to 5 volt, with 2.2k pull up resistors
• Accessible on RJ-45 connectors
• Internal 5 volt 0.1% band gap voltage reference
• RC low pass on all inputs (f_c=159 Hz)
• Current value at time of sampling
• Average value of configured window

Communications Options

Modbus™ / RS-485

• Modbus™ RTU format
• RS-485 fault protected interface
• 9,600 or 19,200 baud
• Five position screw terminal for RS-485 A, RS-485 B, RS-485 C
• #1 flat screw driver required
• Compatible with our RS485Tap product line

Electrical, Mechanical, and Regulatory

Power

• 9 to 76 volts DC, reverse polarity protected
• Two position pluggable screw terminal for DC+ and DC-
• #1 flat screw driver required
• All sensors inputs have Transient Voltage Suppression (TVS) protection

Weight and Dimensions

• Weight: 125 gram (4.4 oz)
• Overall Dimensions: 84 mm wide, 108 mm tall, 34 mm deep (3.3 x 4.25 x 1.35 in)

Materials

• Case: ABS plastic, flame retardant, UL94V-0
• Circuit board: FR-4, 1.6mm (0.062 in), double sided, plated through holes, solder mask, silk screen, gold plated

Regulatory Compliance

• RoHS compliant, no lead used in manufacture