Connecting the digital inputs
Input 2 can be configured for different purposes (see "18.16. Configuring the digital inputs") and used with a
potential-free contact or with a power supply, both outside the unit.
2+
2-
External potential-free contact
The truth table for these inputs is as follows.
Potential-free contact
Open
Closed (R < 100 Ohm)
Closed (R > 100 Ohm)
15.4. Digital input connection process
The digital inputs are connected in the following order:
1.
Loosen the corresponding packing gland (see Section "2.7. Description of cable inlets"), remove the cap
and pass the cable through it.
2.
Connect the wiring to terminal J54 DIGITAL INPUT as shown in the previous figures, respecting the
polarities printed on the electronic card.
3.
Correctly tighten the packing glands to prevent losses to the protection class, verifying that the wiring is
not taut. Check that the connection is tight.
ABH2013IQM01_C - Installation and Operation Manual
R
R
Connector
2+
2-
External power supply
Voltage level
5 V ~ 24 V
0 V
1 V ~ 5 V
Ingeteam
EN
ES
FR
+
V
PT
-
CPU
"0"
"1"
X
45