Emerson 7ADTB manual Normal, Load Disconnected = O, Down = C, Emergency = O

Page 9

TESTING & SERVICE (continued)

handle

UP opens the

 

 

Emergency source

frame

contacts

 

UPPER SHAFT

 

DOWN closes the

 

Emergency source

shaft extension

contacts

 

Figure 2–2. Maintenance handle operation for Emergency source contacts (upper shaft).

handle

UP closes the

 

 

Normal source

frame

contacts

 

LOWER SHAFT

 

DOWN opens the

 

Normal source

shaft externsion

contacts

 

Figure 2–3. Maintenance handle operation for Normal source contacts (lower shaft).

Table C. Maintenance handle positions. ALL POWER MUST BE OFF !

Transfer Switch Position

Interlocked Shafts

Maintenance Handle

Shaft Indicators

 

shaft

 

up

 

 

extension

 

 

 

E

 

 

 

E = O

 

 

 

upper contacts open

 

 

 

 

Normal

contact shafts

 

up

 

 

link

N = C

N

shaft

 

 

 

 

 

extension

 

 

lower contacts closed

 

 

 

up

 

E

 

 

 

E = O

 

 

 

upper contacts open

Load

 

 

 

 

 

 

 

Disconnected

 

 

 

N = O

N

 

 

 

 

 

 

lower contacts open

 

 

 

 

 

 

 

down

 

E

 

 

 

E = C

 

 

down

upper contacts closed

 

 

 

Emergency

 

 

 

 

 

 

 

N

 

 

 

N = O

 

 

 

lower contacts open

 

 

 

 

 

 

 

down

 

*Link between contact shafts prevents closing both N and E contacts. The shaft extension and contact shaft turn in opposite directions through a cam–follower mechanism. If Normal and Emergency connectios are reversed this operation is also reversed.

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Contents Rating Label Table of ContentsNameplate Standard Controls Indicators Group ControllerCatalog Number Identification 600Section InstallationEngine Starting Contacts When normal sourceAuxiliary Circuits FailsGo off. Then put the starting Control selector switch on Voltage ChecksObserve these lights Turn and hold Transfer Control switch clockwise to Transfer This switchElectrical Operation OperateReplacement Parts Testing & ServiceContact position indicators Table B. Trouble-Shooting ChecksNormal = O= C Load Disconnected = OBypassing & Isolating Bypass SwitchBypassing the ATS Upper amber lightBypass Handle Turn it Counter Clockwise PushTurn Bypass Handle Clock WiseIsolating the ATS Turn crank Counter Clockwise Until Window ShowsMiddle amber light Should be on Lower amber lightTab Handles Left rail Right rail Contact InspectionReturn to Service Turn crank Clockwise Until Window ShowsMiddle amber light Should come on Conn Bypass Handle Clockwise Bypass Handle Counter ClockwiseTurn the handle clockwise Turn the handle counterclockwise See Controller User’s Guide Index

7ADTB specifications

The Emerson 7ADTB is a cutting-edge device designed primarily for temperature and pressure monitoring in industrial applications. This versatile model showcases a blend of advanced technologies that ensure high accuracy, reliability, and durability even in the most demanding environments.

One of the key features of the Emerson 7ADTB is its exceptional measurement range. Capable of handling extreme temperatures and pressures, it appeals to industries such as oil and gas, chemical processing, and pharmaceuticals. The device is engineered to maintain precise readings, ensuring optimal safety and efficiency in processes where temperature and pressure control is crucial.

A standout technology in the Emerson 7ADTB is its intelligent sensor technology. This advanced feature allows the device to self-calibrate and adapt to various conditions, minimizing human error and ensuring accurate data collection. It uses built-in diagnostics to monitor its performance continuously, providing real-time alerts for any anomalies or maintenance needs. As a result, users can implement preventive measures to avoid costly downtimes.

The device is also notable for its robust construction. Built to withstand harsh industrial environments, the Emerson 7ADTB boasts an IP67 ingress protection rating, meaning it is dust-tight and can endure immersion in water. This characteristic, combined with high-grade materials, ensures a long lifespan and reliable performance in various applications, from offshore platforms to refining facilities.

Integrating seamlessly into existing systems is another crucial aspect of the Emerson 7ADTB. It supports a variety of communication protocols, including Modbus and HART, allowing for easy integration with control systems. This compatibility facilitates real-time data monitoring and control, enabling operators to make informed decisions based on accurate and timely information.

Moreover, the user-friendly interface of the Emerson 7ADTB enhances operational efficiency. The device features an intuitive display that allows users to access data, adjust settings, and perform diagnostics with ease, reducing the learning curve for new operators.

In conclusion, the Emerson 7ADTB represents a significant advancement in temperature and pressure measurement technology. With its robust construction, intelligent sensor capabilities, and ease of integration, it meets the demands of modern industrial applications while ensuring safety, reliability, and performance. As industries continue to evolve, devices like the Emerson 7ADTB will play a pivotal role in enhancing operational efficiency and productivity.
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