Configuration Of The Switching Output - ABB FV4000 Operating Instruction

Electrical connections
5.5

Configuration of the switching output

The switching output can be configure as both a NAMUR contact and an optocoupler.
Fig. 37: Switching output circuit diagram
The switching output of the transmitter is factory-configured on the basis of the order code. The
following table lists contact types and their matching order codes and Ex approval.
VT40, VR40, ST40, SR40
VT41,VR41, ST41, SR41
VT42, VR42, ST42, SR42
VT43, VR43, ST43, SR43
VT4A, VR4A, ST4A, VR4A
If necessary, the switching output can be modified subsequently should prevailing site
conditions change.
1. Disconnect the flowmeter from the line supply.
2. Unscrew the front housing cover. The lock on the cover needs to be undone first on meters
for hazardous areas.
Important
Observe the waiting times for meters for hazardous areas (see the section titled 11 „Ex
relevant specifications".)
3. Remove the transmitter from the housing. To do this, unscrew the three Phillips head screws
and carefully take the transmitter out of the housing.
46
1 K
10 K
Rotary switch counterclockwise:
NAMUR contact
Order code
FV4000 / FS4000
41
42
Rotary switch clockwise: optocoupler
Ex approval
None
Ex ib / Ex nA [nL]
Ex d / Ex ib / Ex nA [nL]
FM
C US
II 2G EEx ia IIC T4
41
42
G00720
Contact type
optocoupler
NAMUR contact
Optocoupler
Optocoupler
NAMUR contact
D184B097U02