ME-02 USER MANUAL MD004
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5.3
External keys connection
The input of external keys (WE) allows to place (make double) selected scale keys into control box or operator’s
workstation. As a standard the input is taken out with a wire for direct connect to a control panel. ME-01
indicators can be equipped with external key interfaces (option on demand).
Marker numbers and outer wires colors:
Marker no. External keys input (option):
Wire colors*
11
Program
green
12
white
13
F
brown
14
Clr
yellow
15
0
red
16
Enter
blue
17
Start
pink
18
T
purple
19
Restart
black
20
+24V
grey
21
I
/
-
* colors might change
External key connecting is shown below. It is crucial to use external supply (24V) in order to make current flow through
scale transoptor input. This way of connection provides galvanic separation of the scale from automatics system which
increases resistance to external interference and increases reliability
.