PARAMETER SETINGS FOR POINT #10
P001 Operation No entry required ( preset to "3" for
distance
).
P002 Material Enter "2" for
solid.
P003 Measurement Response No entry required ( preset to "2" for
medium
response, 1 m/min ).
P004 Transducer Enter "110" for
XLS-60
Transducer.
P005 Units Enter "4" for
feet
.
P006 Empty Enter "175" for
175 foot
transducer face to Tripper Car max distance.
P007 Span No entry required ( preset to Empty, P006 when P001 = 3 ).
P070 Failsafe Timer Enter "2" for
2 minutes
( 14 ft at the maximum travel rate ).
PARAMETER SETTINGS FOR AO-10 mA OUTPUT # 10
P200 mA Range No entry required (
XLS-60 face=4mA
*
; far=20mA
when P001 = 3 ).
P219 mA Failsafe Enter "3.8" for
3.8 mA
output on "LOE".
*
Objects near the transducer face ( 4 mA ) cannot be reliably detected. Use controls to stop the Tripper Car
before it approaches the transducers Nearest Distance. ( See INSTALLATION Transducer Mounting. )
With the PLC disabled, enter the RUN mode ( or perform a Reading Simulation, P920 ). When satisfied with
system performance and programming, connect AO-10 mA Output 10 to the PLC.
For a completely automated system, position the Tripper Car via the PLC, based upon bunker material level,
as monitored by the remaining XPL+ Point Numbers. ( See EXAMPLE 3 - mA Multi Point Average ). When
both examples 3 and 4 are used, the PLC may be programmed to operate as follows:
» fill bunker sections to predetermined levels based upon AO-10 mA output 1 - 6 values.
» shuttle Tripper Car to lowest bunker section level.
» if a bunker section "LOE" occurs ( 3.8 mA ), shuttle to the next lowest bunker section.
» if a Tripper Car "LOE" occurs ( 3.8 mA on mA Output 10 ), stop Tripper Car and material feed.
» when "LOE" subsides, restart material feed.
» when all bunker levels are full, stop material feed and "park" the Tripper Car.
APPLICATION ASSISTANCE
The preceding examples describe only a few ways in which the XPL+ can be applied to process
measurement requirements.
The XPL+ can be used to monitor almost any process ( within the temperature, measurement range, and
chemical immunity capabilities of the system ) where a distance measurement or determination of presence
vs. lack of presence of an object is desired.
By thoroughly reviewing the PARAMETERS sections, you may identify some interesting ways of using the
XPL+ to monitor specific processes.
e.g.1 In a paper mill, one transducer may be used to monitor roll diameter, while another monitors the
presence of paper to the roll. The feed can be stopped based on the roll diameter or a paper break.
e.g.2 For a truck loading station, one transducer can monitor truck position while another monitors load
height. The discharge can be stopped if the truck is out of position or when it’s full, and the discharge
chute can be positioned a minimal distance from the load during filling to keep dust down.
Milltronics has many years experience applying ultrasonic level measurement to a variety of processes in the
mining, aggregate, lumber, grain, chemical, pulp and paper, water, and waste water industries.
If you encounter a difficulty applying the XPL+ to a process measurement requirement, or successfully apply
the XPL+ to a "unique process" we may have never considered, contact Milltronics or your local distributor.
01/25/99
INSTALLATION
PL-532 94
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