Endress+Hauser Silometer FMC 672 Z, Инструкция по установке и эксплуатации

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6 Analogue Outputs
This Chapter deals with the analogue output settings. The FMC 672 Z/677 Z transmitter
is designed for continuous measurement with control of:
•
one voltage output 0/2 ... 10 V per channel
•
one current output 0/4 ... 20 mA per channel
by the level or volume indications at V0H0 and V4H0. 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 or V4H5/V4H6, entries must be made
in the units used for calibration or if performed, linearization.
Channel 1 Channel 2 Significance Default
value
V0H3 V4H3 Analogue range
0 = 0...20 mA / 0...10 V
1 = 4...20 mA / 2...10 V
0
V0H4 V4H4 Output damping in seconds 1
V0H5 V4H5 0/4 mA value (in units used for calibration or
linearization) 0.0
V0H6 V4H6 20 mA value (in units used for calibration or
linearization) 100.0
V0H7 V4H7 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/V4H6
20 mA full-scale
V0H7/V4H7
fail to 110%
V0H7/V4H7
fail to hold
V0H5/V4H5
0/4 mA
V0H7/V4H7
fail to -10%
0
-2
0/
4
…
20 m
A
output
BA064E28
Volume or level V0H0/V4H0
M
a
x. m
easuri
n
g
rang
e
V0H6/V4H6
V0H5/V4H5
Fig. 6.1:
Control parameters for analogue
outputs (0
…
20 mA)
Silometer FMC 672 Z/677 Z Chapter 6: Analogue Outputs
33