Advertisement
System 350TM P352PN Electronic Proportional Plus Integral
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.
❑
Modular Design
❑
Plug-together Connectors
and 35 mm DIN Rail
Mounting
❑
Three Models Cover Wide
Setpoint Ranges: 0-100 psi,
90-250 psi, and 240-600 psi
❑
Adjustable Minimum Signal
Output
❑
Wide Adjustable Throttling
Ranges: 5 to 50 psi and
10 to 100 psi
❑
Reverse or Direct Acting
Modes
❑
Three Selectable
Integration Constants
© 2000 Johnson Controls, Inc.
Part No. 24-7664-1911, Rev. —
Code No. LIT-930044
Pressure Controls for PSI Applications
Features and Benefits
Figure 1: P352PN Electronic Proportional Plus
Integral Pressure Control for PSI Applications
Provides the flexibility to add a D352 Pressure
Display Module, S352 Stage Modules, and a
Y350R Power Module
Eliminates wiring between modules and
reduces installation costs
Reduces inventory while providing control for
most positive-pressure refrigeration and
HVAC applications, in three overlapping
pressure ranges
Allows the user to adjust the minimum output
between 0 and 60% of the output signal range
Enables user to match the range of pressure
control to specific application requirements
Works in a variety of pressure applications
Allows the user to adjust system recovery rate
to setpoint pressure at slow, medium, or fast
to meet application requirements
System 350 Product Guide 930
Basic Controls Section
Product/Technical Bulletin P352P
Issue Date 0300
www.johnsoncontrols.com
1
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Johnson Controls P352PN-2
Summary of Contents for Johnson Controls P352PN-2
- Page 1 Modes ❑ Three Selectable Allows the user to adjust system recovery rate Integration Constants to setpoint pressure at slow, medium, or fast to meet application requirements © 2000 Johnson Controls, Inc. Part No. 24-7664-1911, Rev. — www.johnsoncontrols.com Code No. LIT-930044...
-
Page 2: Operation Overview
pplication peration Overview A P352PN Series pressure control may be set as a IMPORTANT: The P352PN controls are intended to proportional-only control or as a proportional plus control equipment under normal integral control, to generate two standard analog operating conditions. Where failure or output signals (0 to 10 VDC and 4 to 20 mA). - Page 3 Proportional-Only Controls Proportional Plus Integral Controls Proportional-only controls work by continuously The P352PN proportional plus integral (PI) pressure adjusting the magnitude of the control’s output signal in control incorporates integral (or reset) control action proportion to the difference (input-error) between the along with proportional-only control action.
- Page 4 Setting (20%) The throttling range can be adjusted from 5-50 psi on Setpoint (Range for the P352PN-2 model and 10-100 psi on the P352PN-3 Pressure P352PN-3 or Throttling Range (psi) and P352PN-4 models. (See Figures 4 and 5.)
- Page 5 Integration Constant DIP Switch Settings Direct Acting or Reverse Acting Mode Depending on the application, the P352PN control can In Direct Acting (DA) mode, the analog output signal be set to operate as a proportional-only control or as a magnitude increases as the pressure rises. In Reverse proportional plus integral control.
-
Page 6: Installation And Wiring
imensions Mounting Slots • The P352PN control can output a variable signal for No. 6 Screws from 0 to10 VDC or 0 to 20 mA. Connections are 3/16 (4) made to the terminal block located in the wiring compartment at the bottom of the case. 1/2 (13) •... - Page 7 The power module connects to the control via a below 30 psi for the P352PN-2 model or 60 psi connector on the control’s right side. The display for the P352PN-3 and P352PN-4 models. A...
-
Page 8: Checkout Procedure
heckout Procedure Proportional-only and proportional plus integral Equipment Needed: controls should be carefully set up and then check out • reliable pressure gauge connected near the during system operation. Use the following guidelines transducer to check out the P352PN controls: •... - Page 9 3. Check pressure transducer for proper output 4. Check the P352PN control for proper operation. signal voltage. Perform Steps 1-3 first. a. Measure and record the voltage between the a. Record the current setpoint, integration SEN and the COM terminals on the control constant, and throttling range in Table 4 below.
- Page 10 (gauge pressure) - offset epairs and Replacement Do not make field repairs or perform calibration. The P352PN Pressure Controls and the P399 Transducer are available through local Johnson Controls representatives. Basic Controls—P352PN Electronic Proportional Plus Integral Pressure Controls for PSI Applications...
- Page 11 P399AAA-1C Used with P352PN-2 control. Fitting: 1/8 in. NPT Transducers P399AAC-1C Used with P352PN-2 control. Fitting: 1/4 in. SAE Female with valve depressor P399BAA-1C Used with P352PN-3 control. Fitting: 1/8 in. NPT P399BAC-1C Used with P352PN-3 control. Fitting: 1/4 in. SAE Female with valve depressor P399CAA-1C Used with P352PN-4 control.
-
Page 12: Specifications
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications, consult Johnson Controls/PENN Application Engineering at (414) 274-5535. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.
Need help?
Do you have a question about the P352PN-2 and is the answer not in the manual?
Questions and answers