Binary Signal Inputs

Threshold pickup and drop-off points as per ordering option

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18 V standard variant (VA,nom: = 24 to 250 V DC):

–	Switching threshold in the range 14 V to 19 V.

Special variants with switching thresholds from 58% to 72% of the nominal input voltage (i.e. definitively “low” for VA < 58% of the nominal supply voltage, definitively “high” for VA > 72% of the nominal supply voltage).

▪	Special variant 72 V: Nominal supply voltage 110 V DC.
▪	Special variant 83 V: Nominal supply voltage 127 V DC.
▪	Special variant 143 V: Nominal supply voltage 220 V DC.
▪	Special variant 163 V: Nominal supply voltage 250 V DC.

Power consumption per input

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18 V standard variant:

VA = 19 to 110 V DC : 0.5 W ± 30%,

VA > 110 V DC: VA ·5 mA ± 30%.

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Special variants:

VA > switching threshold: VA ·5 mA ± 30%.

Hint

The standard variant of binary signal inputs (opto couplers) is recommended in most applications, as these inputs operate with any voltage from 19 V. Special versions with higher pick-up/drop-off thresholds are provided for applications where a higher switching threshold is expressly required.

The maximum voltage permitted for all binary signal inputs is 300 V DC.