6.1
Analogue output settings
Analogue output range
One of two analogue ranges can be set at V0H3:
•
0 =
0 ... 20 mA/ 0...10 V
•
1 =
4 ... 20 mA/ 2...10 V (default setting.).
Current and voltage outputs are switched together.
Step
Matrix
Entry
Significance
1
V0H3
0
Selects 0... 20 mA/0 ...10 V range
2
-
»E«
Register entry
Output damping
A filter, set at V0H4, acts to smooth the analogue output. Using it results in a steady
display and analogue output less affected by sudden changes in level e.g. due to
turbulence. The effect may be modified by changing the integration factor for output
damping between 0 ... 100s.
•
0 =
without filter.
•
1
…
100 =
with filter (default value = 1 s).
Step Matrix Entry Significance
1
V0H4
e.g. 5
Sets output damping = 5s
2
-
»E«
Register entry
0/4
…
20 mA signal
parameters
These parameters, entered in the units used for calibration or linearization, indicate the
start and end of range values of the analogue signal output and also control the 10-step
LCD display. The parameters to be entered are:
•
0/4 mA value:
V0H5
•
20 mA value:
V0H6.
Step Matrix Entry
Significance
1
V0H5
e.g. 100
Start-point level or volume for analogue output
2
-
»E«
Registers entry
3
V0H6
e.g. 1100 Full scale level or volume for analogue output
4
-
»E«
Register entry
Turn-down scale:
Practically any start or end value can be entered, allowing the 0/4
…
20 mA signal to be
assigned to any section of the measuring range.
Reverse scale:
If V0H5> V0H6 a warning E 608 appears at V9H0 and the alarm LEDs blink, however,
the instrument continues to operate. The warning and alarm can be eliminated by
swapping the values contained in the fields V3H8 and V3H9, D/A calibration, which are
normally used for service purposes only. The bar chart, however, still operates in the
same direction
•
Enter the smaller value in V0H5, the larger in V0H6
•
Select operating mode 6 in field V8H0 (simulation). Note the parameters in
V3H8 and V3H9
•
Enter the V3H8 parameters in V3H9 and vica versa
•
Select operating mode 1 in field V8H0.
Silometer FMX 570
Chapter 6: Analogue Outputs
31
