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4. OPERATIONAL DEFINITIONS AND FUNCTIONS
WAIT OPERATION: In case one step shifts to another step, the next step will not start even after step time elapsed
if the process variable(PV) does not reach the wait zone or PV passed the wait zone.
However, the next step will start when the wait time elapsed.
At the wait operation, the indication at SV blinks.
: Wait Zone... This means the deviation area between SV(Setting Value) and
PV(Process variable) enable to start next step.
RAMP STEP SOAK STEP
WAIT ZONE
WAIT ZONE
WAIT TIME
: Wait time... This means the maximum waiting period to start next step when
PV(Process variable) does not reach to the SV(Setting Value).
RAMP STEP SOAK STEP
・ SV start: It will start from the setting value at the starting time of operation which to be treated as the PV(Process
variable) or the target SV(Setting Value).
PV start
...Operation will start from the Ramp step including the PV at the starting time of Program operation.
In case more than one step applied, it starts the one with smaller step number.
Start operation from this point.
PV At these area, operation will
not start.
step 1 step2 step3 step4
SV start
...At the set time of Step 1, operation starts from the specified SV(Set Value)
to the target set value(SV1) of Step 1.
Start operation from this point.
SV
step 1 step2 step3 step4
WAIT ZONE
WAIT ZONE
Soak step starts from this
Process variable(PV) points
Target Setting Value(SV)
Soak step starts from this
Process variable(PV) points
Target Setting Value(SV)
WAIT TIME
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