6
Analogue Outputs
This Chapter deals with the analogue output settings. The FMX 570 transmitter is
designed for continuous measurement with control of:
•
one voltage output 0/2 ... 10 V
•
one current output 0/4 ... 20 mA
by the level or volume indication at V0H0. Table 6.1 and Fig. 6.1 summarize the
parameters which control the analogue outputs and 10-step LCD display.
Units
When defining the analogue range at V0H5/V0H6, the entries must be made in the units
used for calibration or if performed, linearization.
Channel 1
Significance
Default value
V0H3
Analogue range
0 = 0...20 mA / 0...10 V
1 = 4...20 mA / 2...10 V
1
V0H4
Output damping in seconds
1
V0H5
0/4 mA value (in units used for calibration or linearization)
0.0
V0H6
20 mA value (in units used for calibration or linearization)
100.0
V0H7
Output on fault condition (safety alarm)
0 = -10 %
1 = +110 %
2 = hold last value
0
Table 6.1:
Control parameters for analogue
outputs
+22
+20
Output
current mA
controlled range
V0H6
20 mA full-scale
V0H7
fail to 110 %
V0H7
fail to hold
V0H5
0/4 mA
V0H7
fail to -10 %
0
-2
0/4
…
20
m
A
output
BA119Y29
Volume or level V0H0
M
a
x.
m
easuri
ng
range
V0H6
V0H5
Fig. 6.1:
Control parameters for analogue
outputs (0
…
20 mA)
Chapter 6: Analogue Outputs
Silometer FMX 570
30
