Graco 234129, Инструкция по эксплуатации

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Typical Job Cycle
98 309738L
Typical Job Cycle
1. Automation system controller verifies that the DIS-
PENSER READY signal is HIGH.
2. Automation system goes into cycle.
3. PrecisionFlo LT control waits for DISPENSE gun
signal from the automation system to start dispens-
ing.
4. Automation system controller requests material to
be dispensed by setting the DISPENSE gun signal
HIGH.
In Batch Dispense Mode the dispense gun signal
must remain valid for a minimum of 20 msec.
5. Dispense gun opens after the GUN ON DELAY,
immediately if the delay is set to zero.
6. PrecisionFlo LT control checks if a REGULATOR
ON DELAY has been set by the user.
If the delay has been set, the PrecisionFlo LT control
waits until the delay has expired, then begins regu-
lating material to the gun.
If the delay has not been set, the PrecisionFlo LT
control immediately begins regulating material to
the gun.
7. PrecisionFlo LT control regulates output based on
the COMMAND input signal from the automation
unit in analog mode or the set value in Default/Fixed
mode.
8. PrecisionFlo LT control measures the volume dis-
pensed continuously in all modes except pressure
control.
9. PrecisionFlo LT control continuously monitors the
outlet fluid pressure and the flow rate, as measured
by the flow meter, and makes adjustments for
changes in operating conditions.
10. PrecisionFlo LT control monitors operating parame-
ters to detect and report any faults that may occur.
11. Automation unit sets the DISPENSE gun signal
LOW, indicating that no material is required during
this portion of the program. (automation unit can
cycle the DISPENSE gun signal HIGH and LOW
throughout a cycle if required. Volume measure-
ment will still occur.)
12. The regulator closes after the REGULATOR OFF
DELAY expires.
13. The PrecisionFlo LT control checks if a GUN OFF
DELAY has been set by the user.
If the delay has been set, the PrecisionFlo LT control
waits until the delay has expired, then closes the
dispense gun solenoid, which closes the gun.
If the delay has not been set, the PrecisionFlo LT
control immediately closes the dispense gun sole-
noid, which closes the gun.
14. PrecisionFlo LT control stops measuring volume
after the DISPENSE DONE DELAY timer expires or
the JOB COMPLETE automation I/O signal is
received, depending on the job end mode selected.
The job complete signal must remain valid for a min-
imum of 20 msec.
15. PrecisionFlo LT control updates the Status screen
and the Data table.
16. The PrecisionFlo LT waits for the next cycle to
begin.