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N a ti o n al C o n tro l s C o rp.
Phone 800-323-2593 • Fax 630-231-1377 • www.nationalcontrols.com
2.0 INSTALLING THE PS700
The PS700 is a front panel NEMA 4 rated control designed to
mount in a 3.625" square panel cutout. Using the brackets
provided (see fig.3, p.11), a NEMA 4 rating is accomplished when
the unit is mounted in a suitable NEMA 4 rated enclosure. Refer
to the Dimensional Drawing and Mounting Information (fig. 3)
for specifics. Remove the electrical terminal block and the
pneumatic fittings in order to mount the unit in the cutout.
DO NOT:
Install these controllers in harsh environments without suitable
protection. Improper installation will void the warranty.
Install this unit in an area of high heat or vibration.
Install this unit close to strong magnetic fields.
3.0 ELECTRICAL HOOKUP
Refer to the corresponding wiring diagram (fig.2) on page 10.
All electrical connections are made to a removable, finger-safe
screw terminal block, which is clearly labeled with terminal
designations. Connect PS700 to a utility power source, which
ranges from 90 to 265 Vac 50/60 Hz. Do not connect this unit to a
"converter" or "inverter" type power source. This unit should be
installed on its own 15-amp circuit. Do not connect this unit to a
power source that is subjected to large switched loads, such as,
electric motors, compressors, electric tools, etc.
WARNING: MAKE SURE THAT THE CIRCUIT THAT YOU
ARE WORKING WITH, IS "TURNED OFF", BEFORE YOU
MAKE THESE CONNECTIONS. SERIOUS INJURY MAY
RESULT IF YOU DO NOT TAKE THE PROPER SAFETY
PRECAUTIONS.
For 120-volt input, connect the "hot" or "high side" of the
incoming power source to "L1" on the terminal strip. Connect the
"return" to "L2" on the terminal strip.
For 240-volt input, connect one side of the 240-volt line to L1 and
connect the other side of the 240-volt line to L2.
Connect the relay outputs, and the 4 – 20 mA current loop (if
used) as desired, and make sure to route any high voltage lines
separate from the low voltage 4 – 20 mA current loop lines.
Dustronix PS700 Operation Manual
N a ti o n al C o n tro l s C o rp.
Phone 800-323-2593 • Fax 630-231-1377 • www.nationalcontrols.com
4.0 OPERATION
The PS700 is shipped from the factory with the default program
(see details below). A pressure input needs to be connected,
outputs wired as required, and power applied to have a
functioning system. From this point, program parameters can be
tailored to the specific application.
5.0 ALARM EVENT
The two instances, which will generate an alarm event on the
PS700 are: the ∆P going below the "Low Alarm Set Point" or the
∆P exceeding the "High Alarm Set Point". In the event of an
Alarm condition, the Alarm LED will flash Red and the Alarm
Relay contacts will change state. Pressing the "Set/Alarm Cancel"
button will return the relay contacts to its normal state and cause
the Alarm LED to change to solid Yellow to indicate that the
alarm has been acknowledged. Note that an Alarm will
automatically cancel when the alarm condition is no longer
present.
6.0 PROGRAMMING
Refer to PS700 Programming Procedure (fig.1) on page 9. During
normal operation the display will show the pressure differential
being measured. To enter the Programming mode, press and hold
the "Set" button 2 seconds until the digital display shows the
"Low Alarm Set point" as indicated by the Low Alarm LED (red)
flashing. (Note that if a security code has been entered, the display
will show "0.0.0." first. To enter a code, see below.) To change a
value, press the "up arrow" or "down arrow" button. To move to
the next parameter, press the "Set" button. Once in the Program
Mode, all of the items must be sequenced through in order to exit
into normal operation mode. If the system is left in the
Programming mode for more than 30 seconds without making a
change, the unit will change back to the normal operating mode
and not save any changes.
6.1 Alarm Low Set point
To view the "Alarm Low Set point", enter the programming mode
as described above. The Alarm Low LED (red) will flash and the
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Dustronix PS700 Operation Manual
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