System 350 Product Guide 930
Basic Controls Section
Product/Technical Bulletin P352P
Issue Date 0300
© 2000 Johnson Controls, Inc.
1
Part No. 24-7664-1911, Rev. — www.johnsoncontrols.com
Code No. LIT-930044
System 350TM P352PN Electronic Proportional Plus Integral
Pressure Controls for PSI Applications
The P352PN Series controls are electronic
proportional plus integral or proportional-only pressure
controls that generate a 0 to 10 VDC and a 0 to 20 mA
analog output signal based on sensed pressure.
Three models are available with setpoint ranges of
0-100 psi, 90-250 psi, and 240-600 psi.
The P352PN Series controls have a wide adjustable
throttling range (proportional band), as well as three
selectable integration constants.
The P352PN Series controls are housed in a NEMA 1
high-impact thermoplastic enclosure. The modular
design provides easy, plug-together connections for
quick installation and integration with specified power,
stage, and display modules.
Figure 1: P352PN Electronic Proportional Plus
Integral Pressure Control for PSI Applications
Features and Benefits
❑
Modular Design
Provides the flexibility to add a D352 Pressure
Display Module, S352 Stage Modules, and a
Y350R Power Module
❑
Plug-together Connectors
and 35 mm DIN Rail
Mounting
Eliminates wiring between modules and
reduces installation costs
❑ Three Models Cover Wide
Setpoint Ranges: 0-100 psi,
90-250 psi, and 240-600 psi
Reduces inventory while providing control for
most positive-pressure refrigeration and
HVAC applications, in three overlapping
pressure ranges
❑ Adjustable Minimum Signal
Output
Allows the user to adjust the minimum output
between 0 and 60% of the output signal range
❑
Wide Adjustable Throttling
Ranges: 5 to 50 psi and
10 to 100 psi
Enables user to match the range of pressure
control to specific application requirements
❑
Reverse or Direct Acting
Modes
Works in a variety of pressure applications
❑
Three Selectable
Integration Constants
Allows the user to adjust system recovery rate
to setpoint pressure at slow, medium, or fast
to meet application requirements
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