VEGA VEGADIS 171 A - Manual (Page 6)

VEGADIS 171 A 6
5 Set-up
5.1 Indication and operating elements
5.2 Input signal
The VEGADIS 171 A is standard for input signals
0/4 … 20 mA.
For other input signals the VEGADIS must be modified
acc. to the following description:
Input signal 0/1 … 5 V
• remove front pane
• R10
unsolder 100 Ohm
• R10 solder 68 K1 1 %
• R11 unsolder 0 Ohm
• R11 solder 100 K 1 %
Input signal 0/2 … 10 V
• remove front pane
• R10
unsolder 100 Ohm
• R10 solder 26 K1 1 %
• R11 unsolder 0 Ohm
• R11 solder 100 K 1 %
5 Set-up
P
0
P
max
Slide switch
Potentiometer for indication span
Potentiometer for indication span
R10
R11
Offset
0 1. 0. 0. 0.
1.0.0.0
5.3 Adjustment of the zero point and
the measuring range final value
Example: requested indication 000 … 1000
Input signals 0 … 20 mA; 0 … 5 V; 0 … 10 V
• remove front pane and front frame (see section
"Procedure to insert the label")
• set slide switch for zero point correction in position "0“
• switch on the mains
• feed the measuring signal acc. to version 0 … 20 mA or
0 … 5 V / 10 V
-
at 0 mA or 0 V measuring signal, theVEGADIS
indicates „000“
- at 20 mA or 5 / 10 V measuring signal, the VEGADIS
indicates „1000“
- the indication can be adjusted in the range of "52.0"
to "174,0" by means of potentiometer P
max.
• adjust requested decimal point with bridge (see section
"adjustment of the decimal point")
Input signals 4 … 20 mA; 1 … 5 V; 2 … 10 V
For the adjustment of the measuring range final value
always the current or voltage difference between initial
and final value must be provided:
at 4 … 20 mA:
20 mA • 4 mA = 16 mA
at 1 … 5 V: 5 V – 1 V = 4 V
at 2 … 10 V: 10 V – 2 V = 8 V
• remove front pane and front frame (see section
"Procedure to insert the label")
• set slide switch for zero point correction in position "0“
• switch on the mains
• acc. to the input signal (difference) provide 16 mA, 4 V
or 8 V
• adjust 100.0 by means of the potentiometer P
max
(measuring range final value)
• set slide switch for zero point correction in position
"Offset"
• acc. to the input signal feed initial value 4 mA, 1 V or
2 V
• adjust 00.0 by means of potentiomter P
0
(zero point
correction)
• adjust requested decimal point with bridge (see section
"adjustment of the decimal point")