Operating Instructions
VEK CN1-1
FEIG ELECTRONIC GmbH
12/11
13
3 Installation
Instructions
3.1 Input
voltage
All inputs are provided with photo couplers. To activate the inputs you can either use the internal voltage supply or
use an external supply. When using an external supply you must first change the internal jumper J2 in accordance
with the drawing and table below.
Attention!
The printed circuit board consists of electrostatic sensitive components. While working with the printed circuit board
please use electrostatic protective measures to prevent any damage to the components. Do not touch the board or
any of the components!
Internally provided inputs,
Externally provided inputs,
No galvanic isolation
galvanic isolation inside counter
Attention!
Terminal „C“ at the front side, near to the terminals of the supply voltage, can only be used with internal Power
Supply as an alternative connection to terminal „Com“. Terminal „C“ mustn’t be wired if external Power Supply is
used.
Inputs of several counter units can be connected in parallel as follows:
Power Supply
Input power
Attention
12..24V DC
Internal
J2 to down and right
•
Use only one power supply for all counter units!
•
Do not connect terminal “C”. Terminals “In1..4” and “Res” are
internally connected to 0 V.
12..24V AC
Internal
J2 to down and right
•
Do not connect multiple counter units in parallel!
12..24V AC/DC
External 12..24V DC
J2 to up and left
•
Use only one external power supply for all inputs!
-
+
Ub
J2
Ub = 12..24 V DC
In
4
In
3
In
2
In
1
Re
s
Co
m
n.
c
.
n.
c
.
J2
ca. 5 mA @ 12 V
ca. 10 mA @ 24 V
In
4
In
3
In
2
In
1
Re
s
Co
m
n.
c
.
n.
c
.
