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XT-1 Installation Manual
Inputs
The XT-1 has 3 software configurable inputs. The inputs are opto-coupled, have 1500 VDC isolation and
reverse polarity protection. The inputs are activated by a current flow and the input impedance is 1 kΩ. A
schematic view of an input is shown in Figure 18. The software functionality is described in §4.2.3.3.4.
Figure 17 Input connections, overview and detail
Connections
High Voltage (active)
Low Voltage (inactive)
Input impedance
Recommended / Max length
Wire size
Table 9 Input connection overview
Figure 18 Input schematic
IN1+
Input 1 positive terminal
IN1-
Input 1 negative terminal
IN2+
Input 2 positive terminal
IN2-
Input 2 negative terminal
IN3+
Input 2 positive terminal
IN3-
Input 3 negative terminal
Min 3.0 V / Max 30 V
Min 0.0 V / Max 0.2 V
1 kΩ
10 m / 100 m
2
0.5 mm
(AWG 20)
13-111 02, 2014-RO-012, 2014-04-30
Page 17 of 32
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