0/4
…
20 mA signal
parameters (cont.)
Proceed as follows:
•
Enter the smaller value in V0H5, the larger in V0H6
•
Select operating mode 6 in field V8H0 (simulation, channel 1). Note the
parameters in V3H8 and V3H9
•
Enter the V3H8 parameters in V3H9 and vica versa
•
Enter previous operating mode in field V8H0
For channel 2, use V4H5, V4H6, V7H8 and V7H9. Select operating mode 7 (simulation,
channel 2) at V8H0 to access V7H8 and V8H9.
Output at fault
The current and voltage outputs can be set to take on distinctive values if the self-
monitoring circuit of the Silometer FMC 672 Z/677 Z transmitter triggers on finding a fault.
The relays follow the analogue output when the value "1" is entered at V1H3 or V5H3.
The choice is made at field V0H7 or V4H7, whereby:
•
0 =
-10% of full scale
≤
-2 mA, -1V (default value)
•
1 =
+110% of full scale
≥
+22 mA, +11V
•
2 =
hold = value at fault held
Proceed as follows:
Step Matrix Entry Significance
1
V0H7
e.g. 0
Analogue output drops to -2 mA/-1V on fault
2
-
»E«
Registers entry
Caution!
•
Selecting option 2 effectively disables any fault recognition safeguards on the
analogue lines. Although the self-checking system functions, the alarm relay trips
and the red alarm LED lights on the transmitter, all analogue devices connected to
the Silometer as well as the measured values passed over the Rackbus appear to
indicate correct measurements.
Output 2 assignment
On selection of operating modes 0, 3, and 5 the field V8H2, output 2 assignment,
becomes accessible.
Do not
change the values.
Silometer FMC 672 Z/677 Z
Chapter 6: Analogue Outputs
35
Содержание Silometer FMC 672 Z
Страница 6: ...Silometer FMC 672 Z 677 Z Notes on Safety 4...
Страница 59: ...Silometer FMC 672 Z 677 Z Operating matrix...
Страница 62: ...Silometer FMC 672 Z 677 Z Operating matrix...
Страница 63: ...Silometer FMC 672 Z 677 Z Operating matrix...
