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EXP-IO

The EXP-IO expansion board is a mixed input/output module that features:

  • Relay: The board features 4 Solid state relays Normally open connection rated at 36Vdc, This enables developers to control actuators easily using Software libraries with Zerynth SDK.
  • Opto-isolated digital inputs: 2 channels of opto-isolated digital inputs are available on the board.
  • 2 Analog Channels channels: Connect your sensor easily and read the data from the sensors over the 2 industrial-compatible channels on the board. The channels support voltage-based ( ±10V), current-based (±20mA) or resistive sensors (calibrated for 11 Kohm for best precision).

EXP-IO

Device Summary​

  • 4x Solid State Relays NO. Uses the TLP172A, Rated at 36Vdc.
  • 2 opto-isolated digital inputs Uses ISO1212DBQR IC rated for 36Vdc.
  • 2 Analog Channels channels Each channel can be configured as
    • 4-20 mA Current channel (full input range +/-20mA)
    • 0-10V Voltage channel (full input range +/-10V)
    • Resistive Sensor Channel.Internal bias is designed for NTC thermistor probes rated 10kΩ @ 25°C (with B=3435), but other probes may also be used depending on the temperature range to be measured.
    • Current Clamp channel based on voltage or current signal( within channel Voltage and current ratings).

Resources and Documents​

Pin Mapping​

EXP-IO

Rotary and Standard switches​

For information on the switches and other hardware details, Please refer to the User manual of the board

Power​

Power to the EXP-IO is supplied directly by the ZM1-DB.

Z-Bus​

The modular expansion system uses the Z-Bus. The Z-Bus is an efficient, powerful standard for connecting and prototyping different sensors and devices. The Z-Bus is using the CN1 pin header (20x2) exposing the following:

  • 16 GPIO pins.
  • 4 interrupt pins.
  • 2 USART/UART instances with full support (TX,RX,RTS,CTS)
  • I2C, SPI support.
  • 5V, 3.3 V output pins.
  • Enable pin for controlling the power to attached expansion boards.
note

The development boards support up to 3 attached expansion boards.

Boards

Expansion boards vary in features and functionality. Currently, Zerynth offers expansion boards for :

  • EXP-AIN: Expansion board with 8 Industrial analog input channels
  • EXP-CONNECT: GSM-NB-IoT and GPS enabled expansion module.
  • EXP-IO: Industrial input/output board with 4 solid-state relays, 2 analog channels (4-20mA/0-10V/NTC/current clamp) channels, 2 opto-isolated digital inputs
  • EXP-RELAY: Relay board with 6 Electromechanical power relays rated 6A 250VAC.
  • EXP-SER: Serial Communication board with : CAN, RS232 and RS485 interfaces.
  • EXP-PROTO: Prototyping board for connecting and testing different types of sensors and devices.