Binary Inputs
The 2 binary inputs BI-1 and BI-2 operate across a wide input-voltage range. Logic 1 (high) is a voltage level
from DC 24 V to 250 V, -20 %, +15 %, with polarity-reversal protection and a pickup threshold of 18 V. In
exceptional cases, for example, with long unshielded lines and a disturbing influence, the pickup threshold
can be set to about 75 V (see Table 2-7 and Figure 2-3).
Logic 0 (low) is a voltage level below the set pickup threshold. When the corresponding binary input is acti-
vated, the corresponding yellow LEDs (BI-1, BI-2) light up.
Table 2-6 Binary Inputs
Binary Input 1 BI-1 Binary Input 2 BI-2 LED BI-1 LED BI-2 LED K1 LED K2
Active – Lit – Remote
station
–
– Active – Lit – Remote
station
If the optical fiber or RS232 is being used for communication, the LEDs K1 and K2 indicate the state of the
binary inputs on the remote station.
2.4
Device Structure
2.4 Binary Inputs
Accessories, Binary signal transmitter 2-channel, Manual 19
C53000-G9050-C607-1, Edition 09.2019
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