SlotGroup 2 | 4 Digital inputs (24 V DC)
Four digital 24 VDC inputs are available. These inputs are configured via SlotGroup 2.
Digital inputs
The digital inputs acquire binary control signals from the process level. Typically, these are mechanical contacts such as normally closed contacts or normally open contacts, electronic sensors such as inductive proximity switches, optical sensors or other methods in order to generate a low/high signal in the sense of control technology.
The inputs are type 3 inputs in accordance with EN 61131-2. The minimum pulse duration depends on the set software filter (index 0x80n0:11).
Digital input type 3, according to EN 61131-2 | Voltage [V] | Input current [mA] |
|---|---|---|
Signal voltage "0 - LOW" | -3 V ... +5 V typ. | 0 mA … 3 mA typ. |
Signal voltage "1 - HIGH" | 11 V ... 30 V typ. | 3 mA typ. |
Notice | |
Fast digital inputs – interference from interfering devices Please note that the input wiring has very little filtering. It has been optimized for fast signal transmission from the input to the evaluation unit. In other words, rapid level changes/pulses in the µs range and/or high-frequency interference signals from devices (e.g. proportional valves, stepper motor or DC motor output stages) arrive at the evaluation unit almost unfiltered/unattenuated. These interferences can be incorrectly detected as a signal.
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