Function Expansion Unit FE260
32
Elster-Instromet
GmbH
B-3 Intrinsically safe power supply for the volume corrector
Also suitable for supplying the EK260 volume corrector.
Designation .......................... “U”
Cable connection ................. Screw
terminals, blue
Cable cross-sectional area ... 0.5...1.5 mm²
Fit wire-end sleeves to flexible stranded wires
Cable length
for cable of cross-
sectional area:
1.5
mm
2
................
1,000
m max.
0.5
mm
2
................ 100
m max.
Screening ............................. Connect cable screen to the cable gland over the full area
Voltage ................................. 8.5 V
±
5 %
Current ................................. 40 mA max.
Safety limits .......................... (see Declaration of Conformance A-2)
B-4 Connections for volume corrector digital outputs
Suitable for pulse or message outputs.
Connection “DA2” is also suitable for higher frequencies, e.g. for the transmission of a
frequency proportional to the flow.
Designation .......................... “DA1”,
“DA2”, “DA3”, “DA4”
Cable connection ................. Screw
terminals, blue
Cable cross-sectional area ... 0.5...1.5 mm²
Fit wire-end sleeves to flexible stranded wires
Cable length ......................... 1000 m max. depending on frequency (see below)
Screening ............................. Connect cable screen to the cable gland over the full area
Open-circuit voltage .............
5 V
±
10 %
Short-circuit current
DA1, DA3, DA4 ................
5
µ
A max.
DA2 .................................. 30
µ
A max.
Frequency
DA1, DA3, DA4
for cable length
up to 100 m .............. 10 Hz max.
up to 1,000 m .............. 1
Hz
max.
DA2
for cable length
up to
10 m .............. 500 Hz max.
up to 100 m .............. 50 Hz max.
up to 1,000 m .............. 5
Hz
max.
Safety limits .......................... (see Declaration of Conformance A-2)
