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Application
The CP-8551 and CP-8552 transducers receive a
variable electronic input signal and produce a 3 to 15
psig (21 to 103 kPa) pneumatic output signal to position
pneumatic damper and valve actuators in HVAC
systems.
Features
•
Durable enclosure with easily accessible wiring
terminations
•
Panel or DIN rail mounting for quick, snap-on
installation
•
Two-wire loop powered or three-wire voltage input
•
High accuracy with low hysteresis
•
Long-term driftless operation with high repeatability
•
Low air consumption and large air flow capacity
•
Control input protection from short circuit or reverse
polarity
Applicable Literature
•
TAC Environmental Controls Reference Manual,
F-21683
•
EN-123 Air Quality Requirements for Pneumatic
HVAC Control Systems Engineering Information,
F-22516
•
TAC Pneumatic Products Catalog, F-27383
Printed in U.S.A. 8-08
© Copyright 2008 TAC All Rights Reserved.
CP-8551 & CP-8552
Electronic to Pneumatic Transducers
General Instructions
F-26159-5
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Table of Contents
Summary of Contents for t.a.c. CP-8551
- Page 1 Electronic to Pneumatic Transducers General Instructions Application The CP-8551 and CP-8552 transducers receive a variable electronic input signal and produce a 3 to 15 psig (21 to 103 kPa) pneumatic output signal to position pneumatic damper and valve actuators in HVAC systems.
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Page 2: Specifications
CP-8552, 4 to 20 mA, 6 to 9 V, and 0 to 10 V. Input Impedance: CP-8551, 550 ¾ maximum, 400 ¾ minimum. CP-8552, 550 ¾ maximum, 400 ¾ minimum, 4 to 20 mA input; >10,000 ¾ voltage input. Power Input Requirements: 4 to 20 mA Input, None. -
Page 3: Installation
3 to 15 psig (21 to 103 kPa to controlled device +4 to 20 mA Current Input Signal (direct acting) — Signal Common Figure-1 CP-8551 Typical Wiring. CP-8552 3 to 15 psig 24 Vac/dc (21 to 103 kPa to controlled device Power Common... - Page 4 Mounting Refer to Figure-5 for mounting dimensions. ° Caution: The CP-8551 and CP-8552 transducers must be mounted within 5 of the upright position. (Refer to "UP" arrow on printed circuit board.) 1. Remove transducer cover by grasping both sides of cover and pulling gently.
- Page 5 Jumper Selection Note: The CP-8552 is factory calibrated for the 4 to 20 mA and 0 to 10 V ranges. Switching to the 6 to 9 V range requires recalibration of the start point and span potentiometers. (CP-8552 Only) The CP-8552 has three jumper selectable input ranges. Refer to Figure-4 for jumper block detail.
- Page 6 9.00 10.00 * Applies only to CP-8552. CHECKOUT 4 to 20 mA Range Note: The CP-8551 and CP-8552 4 to 20 mA span and start point potentiometers are not field adjustable. (CP-8551 and CP-8552) To check transducer operation: 1. Check for foreign material such as dirt or oil in the air supply. Also check for clogged filters.
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Page 7: Maintenance
2-3/4 (70) 1-21/32 (102) (42) 1-3/32 9/16 (28) (14) 2-1/4 5/16 2-5/32 (57) (13) (55) 2-13/16 (71) Front View Side View Dimensions shown are in inches (mm). Figure-5 CP-8551 and CP-8552 Dimensions. © Copyright 2008 TAC All Rights Reserved. F-26159-5... - Page 8 Copyright 2008, TAC All brand names, trademarks and registered 1354 Clifford Avenue trademarks are the property of their respective P.O. Box 2940 owners. Information contained within this Loves Park, IL 61132-2940 document is subject to change without notice. www.tac.com F-26159-5...