Electro-Pneumatic Transducer0 pages

Model T7900 Electro-Pneumatic Transducer

Model T7900 Analog ControlModel T7900 DeviceNetCommunication >

Features

Shown with Mounting Kit 19634-1 (Included with unit) The Model T7900 Series Electro-PneumaticTransducers include the Model T7900 with
Analog Output and the Model T7900D with
DeviceNet >
TM Communication.The Model T7900 controls pressure in proportion to an analog electrical input signal.
An internal feedback sensor monitors output
pressure to achieve high accuracy.The Model T7900D Transducer withDeviceNet >
ModelT7900

TM Communications controls outputpressure in response to a digital communication command. Common Features of the T7900 & T7900D ?RFI/EMI protection eliminates electromagnetic and radio interference.?Output pressure displays in psig, BAR, kPa, or user-defined pressure units.?Reverse acting capability for analog inputand output signals.?Select Current or Voltage mode for input signal or optional analog channels using the keypad.?Independently adjustable PID tuning coefficients.?Fully functional keypad and display.
?Backlit Liquid Crystal display screen. >
Shown with Mounting Kit 19634-1 (Included with unit)

Operating Principles

The Model T7900 Series Transducers havea closed-loop, integrated, microprocessor
control system that regulates outlet pres-
sure. You can control the output from the
Model T7900 using the keypad or from an
analog control signal. You can control the
output from the Model T7900D using the
keypad and through DeviceNet >
TM Communication network.The Feed and Bleed Solenoid Valves con-trol pressure in the Signal Chamber of theBooster Section. A pressure sensor meas-
ures the outlet pressure and provides afeedback signal to the Electronics Section.Any variation in pressure between the set-point and the outlet pressure activates theFeed and Bleed Solenoid Valves to changethe output pressure. >

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