PARAMETER SETTINGS FOR POINT # 1
P001 Operation Enter "2" for
space
.
P002 Material No entry required (preset for
liquid
).
P003 Measurement Response No entry required. ( preset for
medium
, 1 m/min ).
P004 Transducer Enter "101" for
XCT-8
.
P005 Units Enter "4" for
feet
.
P006 Empty Enter "4.5" for
4.50 ft
( 3 feet diameter plus 1.5 ft in standpipe ).
P007 Span Enter "3" for
3 ft
( vessel diameter ).
P070 Failsafe Timer Enter ".1" for
6 seconds
.
P071 Failsafe Material Level Enter "Lo" for
advance to Empty on "LOE"
.
PARAMETER SETTINGS FOR AO-10 mA OUTPUT # 1
P200 mA Range No entry required. ( preset for
20 mA = low level
, P001 = 2.)
P213 mA Max Limit Enter "20.2" for
20.20 mA
.
P219 mA Failsafe Enter "20.2" for
20.20 mA
.
PARAMETER SETTINGS FOR TEMPERATURE AVERAGING
P660 Temp Source Enter "5" for average XCT-8 and TS-3 temperatures.
With process control equipment disabled, enter the RUN mode to monitor system performance and
alarm programming. ( A Reading Measurement simulation ( P920 ) may be performed to verify mA
output programming ).
When satisfied with system performance and programming, connect AO-10 mA output 1 to the
Programmable Logic Controller ( PLC ).
Note that on XPL+ "power off" the AO-10 mA output is "held" and on AO-10 "power off" the mA output drops
to 0.00 mA. During a power interruption, the "last known" mA output value is maintained in memory for 1
hour minimum. If power is interrupted beyond 1 hour, on power resumption, the mA output immediately
assumes the "new value".
Remaining Vessel Capacity
To perform a volume conversion for the preceding example, the following programming is required.
VOLUME PARAMETER SETTINGS FOR POINT # 1
P050 Tank Shape Enter "7"
*
for
horizontal cylinder with parabolic ends
.
P051 Max Volume Enter "117" for
117 cubic feet
( Use vessel fabricators value ).
P052 Tank Dimension A Enter "1.5" for
1.5 ft
( the horizontal length of one parabolic end ).
P053 Tank Dimension L Enter "12" for
12 ft
( the horizontal length, excluding parabolic ends ).
*
This is the only tank shape where the Empty ( P007 ) value must exactly equal the vessel height.
Now in the RUN mode, the Reading Value
and AO-10 mA output represents remaining vessel capacity in
cubic feet. If the mA output is still to be scaled to "space" ( distance from material to Full in feet ) set the mA
Function ( P201 ) to "2".
01/25/99
PL-532 90
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