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PRESYS
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Instruments
COUNT - this is the parameter programmed by the user which determines the
number of times the setpoint sequence should be repeated. If COUNT is
programmble at 250 the programmable setpoint is continuously executed. While the
programmable setpoint is being executed such parameter may no longer be altered
and serves the purpose of showing the user how many cycles are still remaining
before ending.
The adjustable parameter ranges are shown below.
Mnemonic
COUNT
SP-1, SP-2, ...
SP-10
t1, t2, ...
t10
Whenever less than ten setpoints are required, just set the time it would take
to reach the next setpoint value at zero. Exemplifyng, should we require two
programmable setpoint values SP-1 and SP-2, t3 should be set to zero.
Itis not uncommon that one might require a sequence of setpoint ramps
alternating with dwell segments. The dwell segment is easily obtained by assigning
the same value to two adjacent setpoints. Therefore, if we wish the setpoint to remain
at a specified value for a specified time interval, we just have to assign such value to
SP-1 and to SP-2.The duration f such dwell segment is determined by the time t2.
Setpoint evolution will be shown on the lower display when the user reverts to
operation level. Should he wish to check how many cycles still remaining before
ending the program, the user should return to programmable setpoint level 7 and
note the value of COUNT parameter.
DCY - 2057 Pressure Controller
Parameter
counter determining how
many setpoint cycles will
be
executed
or
many
cycles
are
before the end of the
programmable
setpoint
execution.
setpoint value
time to reach the setpoint
Adjustable
Range
1 to 250
how
left
-999 to
9999
0 to 9999
Factory
Units
Value
1
repeats
5000
EU
0
minutes
Maintenance
Page 48
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