BYPASSING & ISOLATING

(continued)

RETURN TO SERVICE

 

 

 

 

 

 

 

 

 

 

 

 

 

This procedure explains how to return the automatic

 

Solenoid interlock prevents you from closing

transfer switch (ATS) to service after inspection and

the isolation contacts until the ATS is in the

maintenance. Observe the Bypass Switch Position indica-

same position as the Bypass Switch.

tor and lights). Refer to Figures 3–7, 3–8, 3–9, and 3–10.

3. Observe which Bypass Switch Position indicator is

 

 

 

 

1. Slide the transfer switch (ATS) into the enclosure

black (NORMAL or EMERGENCY) at the Bypass

Switch Handle. This indicates the source connected

(isolation contacts facing inward) until its crank pins

to the load.

engage the latch plates on both sides. Next push in

4. Observe which Transfer Switch Connected To light is

side rail carriage. Then close enclosure door.

on (Normal or Emergency) on the door. This is the

 

 

 

 

 

 

 

 

position of the Transfer Switch. If it is not in the same

 

 

 

 

 

 

 

 

position as the Bypass Handle change the position of

Close the enclosure door to prevent personal

the Transfer Switch as follows:

injury in case of electrical system fault.

 

 

To change the position of transfer switch

Align position indicator. Do not leave the handle in an intermediate position.

Operate to NORMAL

OperatetoEMERGENCY

Turn Transfer Control

Turn Transfer Control

switch to Retransfer

switch to Transfer Test

Delay Bypass.

(hold 15 seconds).*

 

 

Connected To Normal

Connected To Emergency

CONN TEST

position window

light should come on. light should comes on.

* If Feature 2B time delay is used, there will be a delay

before transfer to Emergency.

ISOLATE

unfold crank

clockwise – draws in the Transfer Switch

Figure 3–8. Isolation Handle.

NOTE: With Normal available, the automatic

transfer switch will not stay in the emergency

position unless Feature 3A time delay is used

(at least 30 seconds).

Do not close the isolation contacts unless the Transfer Switch (ATS) and Bypass Switch are in the same position!

5.When the transfer switch is in the same position as the Bypass Switch handle, continue turning the

2. Turn the Isolation Handle clockwise (approx. 7

turns) until the window shows TEST. The ATS can be

Isolation Handle clockwise (about 16 turns) until the window shows CONN (connected).

tested now without load interruption (see page 2–1).

Bypass Switch

E

Turn crank

 

clockwise

L

until

 

window

 

shows

 

TEST.

 

 

N

Turn crank clockwise until window shows

CONN (connected).

Bypass Switch

E

 

L

 

N

ATS

 

ATS

Figure 3–9. ISOLATE to TEST position.

Figure 3–10. TEST to CONNECTED position.

Now continue to the next page for instructions on how to return the Bypass Handle to the OPEN postition.

3---3

Page 9 Page 11
Page 10
Image 10
Emerson 7000 SERIES 7ADTB manual Return to Service, Turn crank Clockwise Until Window Shows
Page 9 Page 11

7000 SERIES 7ADTB specifications

The Emerson 7000 Series 7ADTB is a state-of-the-art temperature transmitter designed for industrial applications that require high precision and reliability. As part of the renowned 7000 series, the 7ADTB model combines advanced digital technology with robust construction, making it an essential tool for temperature measurement in sectors such as oil and gas, chemical processing, pharmaceuticals, and food production.

One of the standout features of the 7ADTB is its exceptional accuracy. With a measurement range that adapts to various sensor types, including thermocouples, RTDs, and thermistors, the transmitter ensures precise readings and optimizes process control. The modular design allows for easy integration into existing systems, thereby enhancing operational efficiency.

The 7000 Series incorporates Emerson’s proprietary Micro Tracy technology, which provides excellent stability and minimizes drift, ensuring reliable performance over time. This is particularly important in environments where temperature fluctuations can affect product quality and safety. The transmitter offers a linearized output and is capable of digital communication via protocols such as HART, Profibus, and Fieldbus, allowing for seamless integration with modern control systems.

Another notable characteristic of the 7ADTB is its rugged construction. Built to endure harsh industrial conditions, the transmitter features a robust housing that is resistant to corrosion and mechanical stress. This durability not only extends the life of the instrument but also reduces the need for frequent maintenance.

The Emerson 7000 Series 7ADTB is also equipped with user-friendly interfaces and advanced diagnostic capabilities. A built-in display provides instant readings and real-time data while allowing users to easily navigate through configuration settings. Furthermore, the device includes self-diagnostic features that alert operators to potential issues before they escalate, promoting preventative maintenance practices.

Overall, the Emerson 7000 Series 7ADTB temperature transmitter is a versatile and reliable solution that caters to a wide range of industrial applications. With its exceptional accuracy, robust design, and advanced communication capabilities, it stands as a testament to Emerson's commitment to delivering innovative measurement solutions that enhance operational efficiency and product quality. This makes it a preferred choice for engineering professionals looking to optimize their temperature measurement processes.
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