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Technical
manual
SMCP33
Connections and circuits
3.3
Inputs and outputs (I/O)
Input circuits
All digital inputs are designed for 5 V input signals.
Note:
The voltage should drop below 2 V for safe switching off and be at least 4.5 V for safe
switching on.
Output circuits
The outputs are a TTL output circuit (5 V / max. 20 mA). To be able to test the output,
an LED with a series resistance against earth can be integrated. The LED lights up
when the output is active.
Issue: V 1.1 - 01.02.2010
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