Valve Driver & Ethernet Remote I/O

The Innova PIO36 valve driver and remote I/O module is a compact valve controller with capability for up to 16 proportional valve functions, with multiple sensor connections and remote I/O module capability. Designed for pressurized mounting to 3000msw.


The PIO36 is ideal as the core controller in “intelligent valve packs”, and for upgrading existing units with more functions and intelligence. It can be a standalone controller or be integrated into a larger system. With the numerous inputs and outputs it can function as a Remote I/O module, and can be daisy-chained for distributed systems. Communication is provided via Ethernet or serial links with MODBUS RTU or TCP. PIO36 controls up to 16 individual 24VDC loads, valves or other functions.

The design allows the unit to be Typical applications are operation of solenoid or proportional hydraulic valves, with 16 channels of pulse width modulated output. Sensor inputs are 16-bit for optimal control. Four isolated digital inputs can be used to monitor end switches or for flowmeter pulse counting. Remote control via Ethernet, RS232 or isolated RS485. Two Ethernet ports with switch for daisy-chaining

Technical information


  • 16 x PWM or on/off outputs, 24 VCapacity: 2 A (overcurrent protected)
    • Resolution: 16-bit
    • Open/short circuit detection
    • PWM Frequency range: 1 to 500 Hz
    • Dither: 0 to 200 Hz, sineform
  • 16 x Analogue inputs
    • Signal: 0 to 20 mA
    • 4 x channels can be switched -10 to 10V
    • 16-bit resolution
  • 4 x Digital inputs, 24 V
    • Isolated input
    • Signal decoding
      • Level (High/Low)
      • Frequency
      • Counter (32-bit)Grey-2 Encoder (100 kHz)
    • Bandwidth: 0 to 4 kHz
  • 16 x current limited (25 mA) power outputs for loop powered transmitters (4 to 20 mA)
  • 1 x general power output for sensors/transmitters
    • On/Off control
    • 3 A (Overcurrent protected)
    • Open/short circuit detection
  • 1 x Input for water ingress probe
  • 1 x Input for temperature sensor (Pt100)


  • Save default power-up values
  • Save default lost COMs valuesOnboard conversion from analogue and digital signals to engineering values, e.g. from mA to Bar, frequency to flow.


  • Voltage: 24 VDC (10 to 30 V)
  • Idle current: 60 mA
  • PWM load current: 2 A each, 10 A total
  • Supply monitoring
    • Measurement of total load current
    • Input voltage


  • Size: 140 x 90 x 18 mm
  • Mounting: 6 x M3 bolts, from the underside
  • Housing: Aluminium cover


  • 2 x Ethernet with switch (10/100Mbps)
  • 1 x RS232
  • 1 x RS485 (Isolated)
  • Protocol for all interfaces: Modbus (RTU/TCP)


  • Pressure: 300bar/3000m water depth
  • Temperature: -20 to 50°C (Operation)



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