
6
Electrical installation
Terminal assignment and DIP switches
Manual – DHE/DHF/DHR21B (standard) and DHE/DHF/DHR41B (advanced)
33
6.2.6
X31: Digital inputs and outputs
Function
The terminal X31 provides eight digital inputs/outputs (e.g. for controlling external ac-
tuators/sensors).
Connection type
Spring terminal plug connector
Wiring diagram
X3
1
1
3
5
7
9
2
4
6
8
10
Assignment
No.
Name
Function
X31
1
+24 V input
DC 24 V voltage supply
2
REF 24 V
Reference potential for binary signals
3
DIO0
Digital input/output (DIO0)
4
DIO1
Digital input/output (DIO1)
5
DIO2
Digital input/output (DIO2)
6
DIO3
Digital input/output (DIO3)
7
DIO4
Digital input/output (DIO4)
8
DIO5
Digital input/output (DIO5)
9
DIO6
Digital input/output (DIO6)
10
DIO7
Digital input/output (DIO7)
Binary inputs
•
The digital inputs are electrically isolated by optocouplers.
•
The permitted input voltages are defined according to IEC 61131.
+13 V – +30 V = "1" = contact closed
-3 V – +5 V = "0" = contact open
Binary outputs
•
The digital outputs are electrically isolated by optocouplers.
•
The digital outputs are short-circuit proof but not external-voltage-proof.
•
The maximum permitted output current is 150 mA per digital output. All eight digital
outputs can be operated simultaneously with this current.
22900055/EN – 08/2016
Содержание DH 21B Series
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