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2.7.3 Non-IEC 61162 signal
1) Analog
4 to 20 mA, 0 to 10 V and –10 to +10 V signals (max. 16 channels) can be connected to the
ANALOG terminals in the JB. Input voltage (current) range is set by DIP switches in the junction
box.
Voltage signal
The voltage between two input terminals is 0 to +10V or –10 to +10 V.
Current signal
For 4 to 20 mA current signal set jumper between I and V as shown below.
470 ohms
1/2W
Connect for current signal
V
I
G
Connection of 4-20 mA current signal
2) Digital (Voltage and Contact-closure)
The terminals for digital input in the JB connect voltage and contact-closure signals. Range of
input voltage is 10 to 32 V
. The system sends 24 VDC to ”floating contact.”
The figures below show the digital interface circuit for voltage and contact-closure signals
respectively.
+24 V
2.2 K
2.2 K
10-32 V
24
A
B
G
Interfacing of voltage signal
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