Ingersoll-Rand ARO SD20 B Series, Руководство оператора

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SD20X-XXX-XXX-BXXX (en) Page 11 of 20
1 +
1
GND (Optional)
2 -
2
GND (Optional)
NON- HAZARDOUS DUTY SOLENOID WIRING DIAGRAM
GENERAL DESCRIPTION
Without end of stroke feedback, solenoid control can only be used
to cycle the pump based on timing. The following curves represent
the flow rates of a pump based on timed operation of the solenoid
at a common operating point of 70 psig air pressure and 30 psi of
back pressure.
60
80
100
120
Cycles
Per Minut
e
Flow Rate PE20P
0
20
40
60
80
100
120
0 10 20 30 40 50 60
Cycle Rate in Cycles
Per Minut
e
Fluid Flow in U.S. Gallons Per Minute
Flow Rate SD20X
Flow Rate
Figure 5
SOLENOID
This electronic interface includes options for solenoid control, end
of stroke feedback, leak detection (diaphragm failure), cycle count-
ing on the major valve, and a ported motor with no major valve for
user-supplied control directly to the two diaphragm air chambers.
Solenoid control allows the cycle rate of the pump to be controlled
electronically.
With Solenoid control, when the solenoid is energized, the pump
strokes and dispenses the fluid in one chamber. When the solenoid
is de-energized, the pump strokes in the opposite direction, dis-
pensing the fluid in the other chamber.
By providing continuous ON - OFF signals to the solenoid, the
fluid transfer rate may be increased or decreased remotely.
End of stroke feedback can be used in conjunction with the so-
lenoid valve to cycle the pump based upon completion of each
stroke.
The leak detection option incorporates an optical fluid sensor in
each air chamber to provide a signal when a diaphragm has failed
and fluid is leaking through the pump.
The cycle counter option provides a closed contact output each
time the pump completes a cycle. This option is not available com-
bined with solenoid control.
The ported motor with no major valve is provided as an option
for users who want to supply compressed air directly to each dia-
phragm and control the operation of the pump with their own
external air controls.
GENERAL DESCRIPTION
ELECTRONIC INTERFACE