Digital I/O module RevPi series

16 digital inputs16 digital outputs14 digital outputs

To transform Revolution Pi into an industrial control unit, various digital I/O modules can be connected to the base module RevPi Core. The I/O modules come in three versions. All have the same 28-pin I/O connector at the front (connector with two rows of 14 pins each – two suitable 14-pin socket connectors with spring clamp contacts for the connection of up to 1.5 mm² stranded hookup wires are supplied). Apart from the standard version with 14 digital inputs and 14 digital outputs, there are also two special versions that exclusively have either 16 digital inputs or 16 digital outputs. All versions have galvanic separation between PiBridge logic circuit and inputs resp. outputs (600 VRMS isolation voltage). The RevPi DIO version has additionally galvanic separation between inputs and outputs. All versions are protected against interference according to EN 61131-2 requirements and may be operated between -40 °C to 55 °C ambient temperature with up to 93 % rel. humidity. Furthermore, all digital I/O modules have UL certification (UL-File-No. E494534). The DC inputs have a voltage threshold which for 24 V supply voltage is compliant to EN 61131-2 Type 1 and Type 3 input definitions. Input current is clamped at a maximum of 2.4 mA. This norm is not defined for 12 V inputs therefore we cannot test for any compliance. But thresholds are reasonably reduced with supply voltage. If voltage supply drops under 9 V, an alarm is sent to RevPi Core/Connect. This can be used as indication of unreliable input values which are no longer compliant to norm for a 24 V digital input.