VEGA VEGAMET 407 AFT - Manual (Page 5)

5 VEGAMET 407 AF/AFT
Electrical connection
The electrical connections should be made on the
mounting assembly in accordance with the diagram
located on the back of the instrument.
Standard two-wire cable can be used as measuring
line, electrode and signal conditioning instrument.
If electromagnetic interferences have to be
expected, screened cable must be used.
As factory preset, the terminals 3 and 4 are bridged
(supply voltage for oscillator: 22 V DC)
Attention:
In conjunction with oscillator type 117 the bridge
must be removed!
(Therefore supply voltage for oscillator: 12 V DC)
Protective measures:
If there is a danger of voltage spikes overvoltage
arresters are recommended.
Note TIB "Overvoltage arresters" for connection.
18
17
16
15
14
13
N
L1
9
2
1
+
-
-
+
-
+
5
7 +
1
4 … 20 mA
8
6
0 … 20 mA
2
1
2
1
3
4
Output 1 2 3
Indicated Current Voltage Voltage
value output output output
0 % 0 / 4 mA 0 V 0 V
100 % + 20 mA - 5 V - 5 V
Relay output
(fail safe)
Mains connection
Voltage output 0 … 10 V
Voltage output 0 … 5 V
Current output 0/4 … 20 mA
Wiring bridge
Measuring line
Electrode with
oscillator Pressure sensor
with oscillator