Code No. LIT-1922370
Issued February 1, 2009
A350P Series
Electronic Proportional Plus Integral Temperature Control
Description
The A350P Electronic Proportional Plus Integral Temperature Control Series has two proportional outputs of 0 to 10 VDC and
0 to 20 mA. This control is used in conjunction with the A99B Series (PTC silicon) Temperature Sensors. Two controls cover a temperature range from -30 to 250°F with an adjustable throttling range (proportional band) of 2 to 30F°.
Proportional plus integral (PI) control is an option to hold setpoint regardless of load shifts on the system. A temperature sensor (A99BC-25C) is included with each A350P control. The S350 Staging Module,
D350 Display Module, and Y350R Power Module can be used with the A350P.
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Cover Screws (Quantity = 4) |
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Module |
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Fast (C1) |
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Connector |
<![if ! IE]> <![endif]>4 |
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<![if ! IE]> <![endif]>3 |
Medium (C2) |
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<![if ! IE]> <![endif]>2 |
Slow (C3) |
Setpoint |
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<![if ! IE]> <![endif]>1 |
Off |
Dial |
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<![if ! IE]> <![endif]>O N |
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Throttling Range |
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Integration DIP Switch |
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Potentiometer |
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MIN |
(shown in proportional only position) |
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M in i mu m |
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T |
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Output |
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Potentiometer |
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Reverse |
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Acting |
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LED Indicator |
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Direct |
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(Percent of Output) |
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Acting |
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Operation Mode |
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Jumper Positions |
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(0-10 VDC Output) V |
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24 V |
(24 VAC) (+) |
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(0-20 mA Output) I |
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C (Common) (-) |
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(Sensor) (+) |
SN |
VDC (+5 VDC) |
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A350P |
Interior of A350P |
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Features
•field-selectable proportional only or proportional plus integral control
•plug-together connectors and 35 mm DIN rail mounting eliminate wiring between models and reduce installation costs
•ten segment LED displays percent of output signal
•field-selectable reverse or direct-acting mode
•minimum output adjustable from 0 to 60%
•two models cover a wide setpoint range of -30 to 250°F (-35 to 121°C)
Selection Chart
Code |
Output |
Range |
Throttling |
Sensor |
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Number |
Signal |
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Range |
(Included) |
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A350PS-1C |
Proportional Voltage: 0 to 10 VDC |
-30 to 130°F |
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A99BC-25C |
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A350PT-1C |
-35 to 55°C |
2 to 30F° |
None |
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1 to 17C° |
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A350PS-2C |
Proportional Current: 0 to 20 mA |
90 to 250°F |
A99BC-25C |
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30 to 121°C |
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Note: Specify code number from this selection chart, along with additional staging, display, and power modules, and temperature sensing enclosures, if required.
Applications
•modulating heating and cooling valves
•maintain mixed air duct temperature via damper modulation
Technical Specifications
A350P Electronic Temperature Control with Proportional Output
Supply |
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Transformer |
20 to 30 VAC, 50/60 Hz, Class 2 |
Voltage 1 |
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Y350R |
120/240 VAC, 50/60 Hz |
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Proportional |
Output |
0 to 10 VDC (550 ohm load minimum) and 0 to |
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20 mA. (600 ohm load maximum). |
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Minimum Output |
Adjustable from 0 to 60% of the output span |
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Output Indication |
A ten segment LED indicates percentage of |
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output |
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Control Action |
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Direct or reverse action is jumper selectable |
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Power Consumption |
3.2 VA |
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Integration Constant |
Three selectable rates fast, medium, slow and |
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an Off position |
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Ambient |
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Operating |
-30 to 150°F (-34 to 66°C) |
Temperature |
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Shipping |
-40 to 185°F (-40 to 85°C) |
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Humidity |
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0 to 95% RH non-condensing |
Case and Cover Material |
NEMA 1, high-impact thermoplastic |
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1. Only one voltage source may be used.
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0.145 |
Mounting Slot |
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3.68 |
For #6 Screws |
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0.5 |
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13 |
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2.94 |
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75 |
DIN |
5.00 |
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A350P |
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Rail |
127 |
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4.00 |
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102 |
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1.56 |
0.42 |
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2.40 |
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40 |
11 |
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1.20 |
61 |
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31 |
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3.00 |
2.40 |
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76 |
61 |
Conduit |
<![if ! IE]> <![endif]>a350pdim.eps |
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0.875 |
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0.85 |
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22 |
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22 |
Hole |
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A350P Dimensions, in. (mm)
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2009 Johnson Controls, Inc. www.johnsoncontrols.com
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