VEGA Supplementary electronics For 4 … 20 mA_HART four-wire - Manual (Page 7)

7
4 Mounting
Supplementary electronics • For 4 … 20 mA/HART four-wire
42766-EN-140108
4 Mounting
4.1 Mounting steps
The supplementary electronics is mounted in the power supply com-
partment. The following illustration shows the position of the power
supply compartment in the double chamber housing.
2
1
Fig. 1: Position of the power supply and electronics compartment
1 Supply room (supplementary electronics)
2 Electronics compartment (sensor electronics)
Proceed as follows:
1. Unscrew housing cover of the power supply compartment
2. Loosen the two holding screws of the supplementary electronics
with a screwdriver (Torx size T 10 or slot size 4)
1
2
power supply
4...20mA
active passiv
e
common IS GN
D
5 1 2 + ( ) (-) 6 7 8
Fig. 2: Power supply compartment with supplementary electronics
1 Supplementary electronics
2 Screws (2 pcs.)
3. Pull the previous supplementary electronics out by using the
dismounting tool.
4. Insert the new supplementary electronics module carefully.
5. Screw in the two holding screws and tighten them
6. Screw the housing cover back on
The supplementary electronics is exchanged.
As a rule, the exchange of the supplementary electronics must be
documented internally when used in Ex applications.
Mounting steps