Digital Inputs / S0 Inputs / Ignition Input; S0 Compliant Inputs (Iec62053-31, Class A Compatible) - M2M LOGIC io Technical Manual

RTCU LX4 pro Technical Manual V1.00
Advanced Industrial M2M/IoT Gateway

Digital Inputs / S0 inputs / Ignition Input

The digital inputs are all low-pass filtered and transient protected. To activate the inputs, connect a
positive voltage between the input and the SGND connector.
Digital inputs 1-4 can be configured individually as S0 input (IEX62053-31, Class A).
By default, the digital inputs are configured as normal inputs. For placement and configuration og the
hardware jumpers inside the unit, please refer to the configuration guide in Appendix A.
Please note: The DIN 5/IGN input is unique as it also functions as the ignition input. If the ignition
input is activated with a logically high or low (Wait For Event mode only), it will wake up the unit
when the RTCU is in low power mode. A power apply will also wake up the unit, if it is in power-
down mode or WaitForEvent mode with power apply and/or ignition selected for wakeup.
Please note: Digital inputs 6-8 do not work as high-speed IO, so PCT is limited to 400Hz, and
incremental encoders are not supported.
The power management allows the possibility to configure a wakeup on one or more digital inputs
with individually configured falling- or rising edge detection. Please consult the RTCU IDE
documentation for additional information.

S0 compliant inputs (IEC62053-31, Class A compatible)

In S0 configuration, the relevant RTCU LX4 pro input will act as a 'pulse input device,' where a
current source is provided on the input connector so that a simple switch between the SGND and the
appropriate input will activate it. This is used in most electricity metering equipment.
S0 must be enabled from the application to work as an S0 compliant input.
Please notice: The RTCU LX4 pro unit must be supplied with a minimum of 16 VDC to fully comply
with the S0 standard. The inputs will still work when supplied with 12VDC but will not be in
compliance with the S0 standard.
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