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System 350 A350P Electronic Proportional Plus Integral Temperature Control Product/Technical Bulletin    

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rdering Information 

Table 5: System 350 Products 

Item 

Product Code Number 

Description 

A350P Proportional Plus Integral 
Temperature Controls 

A350PS-1C 
 
 

A350PS-2C 

 
 

A350PT-1C 

Range: 

-30 to 130°F (-35 to 55°C)  

Throttling Range:  2 to 30 F° (1 to 17C°) 
(Includes the A99BC-25C Temperature Sensor) 

Range: 

90 to 250°F (30 to 120°C)  

Throttling Range:  2 to 30 F° (1 to 17C°) 
(Includes the A99BC-25C Temperature Sensor)

 

Range: 

-30 to 130°F (-35 to 55°C)  

Throttling Range:  2 to 30F° (1 to 17C°) 
(Sensor not included) 

Display Modules 

D350AA-1C 
D350BA-1C 

Digital Temperature Display Module (Fahrenheit Scale) 
Digital Temperature Display Module (Celsius Scale) 

On/Off Stage Modules 

S350AA-1C 
S350AB-1C 

Fahrenheit Scale 
Celsius Scale 

Slave Stage Module 

S350CC-1C 

Dual Scale (°F and °C) 

Proportional Stage Module 

S350PQ-1C 

Dual Scale (°F and °C) 

Power Module 

Y350R-1C 

120 or 240 VAC, 50/60 Hz Input, Rectified Class 2, 
24 VAC Output 

 

Table 6: System 350 Accessories 

Item 

Product Code Number 

Description 

Wall Mount Plate 

TE-6001-4 

Includes sensor mounting clip 

Cover 

T-4000-2644 

For wall mount plate 

Mounting Clip 

A99-CLP-1 

Surface mounting clip for the A99B Temperature Sensor 

Duct Mounting 

TE-6001-1 

Duct-mounting hardware with handy box 

Duct Mounting 

TE-6001-11 

Duct-mounting hardware without handy box 

Conduit Adaptor 

ADP11A-600R 

1/2 in. snap-fit EMT conduit adaptor (box of 10) 

Immersion Well 

WEL11A-601R 

For liquid sensing applications 

Sun Shield 

SHL10A-603R 

For use with outside sensors in sunny locations 

DIN Rail Sections 

BKT287-1R 
BKT287-2R 

12 in. (0.3 m) long 
39-1/3 in. (1.0 m) long 

DIN Rail End Clamp 

PLT344-1R 

Consists of two end clamps 

Cables for Remote Mounting of 
D350 Display Module 

WHA29A-600R* 
WHA29A-603R 
WHA29A-604R 

3 ft (0.9 m) 
25 ft (7.6 m) 
50 ft (15.2 m) 

 

*WHA29A-600R may be used to daisy chain S350 modules together. 

Summary of Contents for System 350T A350P

Page 1: ...dules to be purchased and installed as needed Plug Together Connectors and 35 mm DIN Rail Mounting Eliminates wiring between modules which reduces installation costs Two Models Cover a Wide Setpoint Range of 30 to 250 F 35 to 121 C Reduces inventory by encompassing temperature ranges required to support the majority of Heating Ventilation Air Conditioning and Refrigeration HVAC R applications Mini...

Page 2: ...unted 10 segment Light Emitting Diode LED bar graph indicates percentage of output Features include adjustable setpoint adjustable minimum output adjustable throttling range proportional band selectable integration time constant selectable Reverse Acting RA or Direct Acting DA mode of operation IMPORTANT All System 350 controls are designed for use only as operating controls Where an operating con...

Page 3: ... at any time Note Before setting the minimum output potentiometer verify that the control reads zero output that is no LEDs are lit Throttling Range Proportional Band The throttling range is the range over which a control is active Throttling range for the A350P control can be adjusted from 2 to 30F 1 to 17C Make the adjustment at the throttling range potentiometer marked THROT RANGE see Figure 2 ...

Page 4: ...ntegrator This resets the integration error when the sensor goes just above the setpoint plus the throttling range in DA mode or just below the setpoint minus the throttling range in RA mode This allows the process to recover from an out of range condition without a large overshoot The A350P control has three field selectable integration constants and an off position The integration DIP switch sel...

Page 5: ...wed Y350R 4 2 0 External Class 2 Transformer 9 8 7 S350A On Off Stage Modules S350A On Off stage modules receive power setpoint and sensor input from the A350P control S350A stage modules perform switching functions based on the control s setpoint and sensor information as well as the offset and differential selected at the S350A stage module For more information on these modules refer to the Syst...

Page 6: ...alues The A350P Temperature Control is housed in a compact NEMA 1 plastic enclosure designed for standard 35 mm DIN rail mounting Four key slot mounting holes on the back of the control case are provided should surface mounting be required If a Y350R is used it should be mounted immediately to the right of the control Any S350 modules would follow on the right with the D350 being the last module m...

Page 7: ... different types in a single application Sensor Connection Shielded cable is not generally required for sensor wiring on runs of less than 50 feet When using shielded cable isolate and tape the shield at the sensor Connect the shield to Terminal C on the A350P control Refer to Table 3 for the maximum recommended cable lengths for particular sizes of wire Table 3 Maximum Recommended Sensor Cable Le...

Page 8: ...ghts 5 Make sure the system is stable in the proportional mode before selecting integration Refer to the Checkout Procedure section 6 Reinstall the cover and secure in place with the four captive cover screws 7 Adjust the setpoint dial to the desired setpoint If using the D350 Display Module press and hold the setpoint button on the D350 while rotating the setpoint dial Note The control s setpoint...

Page 9: ... to a value between 4 9 and 5 1 VDC replace the sensor If the DVM voltage is still below 4 9 VDC replace the A350P control 2 Check sensor for proper resistance at a given temperature The resistance across the sensor changes with the temperature of the sensor a Disconnect power from the A350P control b Disconnect the sensor from the control and measure the resistance across sensor leads c When meas...

Page 10: ...is on If not replace the A350P control 2 Adjust the minimum output to zero again and select the DA mode 3 If the right most LED in the bar graph is on Terminal V 10 VDC Terminal I 20 mA go to Step 3h If the LED is not on replace the A350P g If the sensor voltage is above 1 1 VDC on A350PS 1C or above 1 6 VDC on A350PS 2C adjust the setpoint to match the actual temperature Ts The output Terminal V ...

Page 11: ... C Proportional Stage Module S350PQ 1C Dual Scale F and C Power Module Y350R 1C 120 or 240 VAC 50 60 Hz Input Rectified Class 2 24 VAC Output Table 6 System 350 Accessories Item Product Code Number Description Wall Mount Plate TE 6001 4 Includes sensor mounting clip Cover T 4000 2644 For wall mount plate Mounting Clip A99 CLP 1 Surface mounting clip for the A99B Temperature Sensor Duct Mounting TE...

Page 12: ...cation A ten segment LED bar graph indicates percentage of output Control Action Direct or reverse action is jumper selectable Integration Constant Four selectable rates fast medium slow and off Sensor Replaceable positive temperature coefficient sensor Reference resistance 1035 ohms at 77 F 25 C Material Case and cover NEMA 1 high impact thermoplastic Agency Listing UL Listed CCN XAPX File E27734...

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