A350PS-2C | PROPORTIONAL TEMP CONTROL; 90/250 F (30/120 C); THROT 2/30 F (1/17 C); | Johnson Controls

PROPORTIONAL TEMP CONTROL; 90/250 F (30/120 C); THROT 2/30 F (1/17 C);

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. . 1 2 3 4 O N Integration DIP Switch (shown in proportional only position) Setpoint Dial Throttling Range Potentiometer Minimum Output Potentiometer (0-10 VDC Output) V (0-20 mA Output) I (Sensor) (+) SN VDC (+5 VDC) 24 V (24 VAC) (+) Module Connector LED Indicator (Percent of Output) Direct Acting Reverse Acting Operation Mode Jumper Positions THROT RANGE MIN OUTPUT Fast (C1) Medium (C2) Slow (C3) Off Cover Screws (Quantity = 4) C (Common) (-) a350p.eps Interior of A350P

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)

Applications

• modulating heating and cooling valves
• maintain mixed air duct temperature via damper modulation

• A350P Series Electronic Proportional Plus Integral Temperature Control
• 90 to 250 F (30 to 121 C)
• Throttling Range 2 to 30 F (1 to17C)
• Includes A99BC-25C Sensor