Emerson 7000 SERIES 7ADTB Testing & Service, Trouble-Shooting Checks, Manual Load Transfer

Page 7

TESTING & SERVICE (continued)

TROUBLE-SHOOTING

Note any optional accessories that may be furnished on the ADTB and review their operation. Refer to any separate drawings and/or instructions that may be packed with the ADTB.

Hazardous voltage capable of causing shock,

burns, or death is used in this switch. Do not touch the power or load terminals of the bypass switch or transfer switch!

Table 2-1. Trouble-Shooting Checks.

PROBLEM

CHECK IN NUMERICAL SEQUENCE

1

2

3

 

OPERATION

GEN-SET

VOLTAGE

Engine–generator set does

Hold Transfer Test switch 15

Starting control must be in the

 

not start when the Transfer

seconds or the outage must

automatic position. Batteries

 

Control switch is turned and

be long enough to allow for

must be charged and

—

held in Transfer Test position

Feature 1C time delay plus

connected. Check wiring to

 

or when normal source fails.

engine cranking and starting.

engine starting contacts.

 

 

 

 

 

Transfer switch does not

Wait for Feature 2B time delay

Generator output circuit

Voltmeter should read at least

transfer the load to the

to time out.

breaker must be closed.

90% of nominal phase to

emergency source after the

 

Generator frequency must be

phase voltage between

engine–generator set starts.

 

at least 95% of nominal (57 Hz

transfer switch terminals EA

 

 

for a 60 Hz system.) *

and EC (or EL1 and EL2 for 2

 

 

 

pole switches). *

 

 

 

 

Transfer switch does not

Wait for Feature 3A time delay

 

Voltmeter should read at least

transfer the load to normal

to time out.

 

90% of nominal phase to

source when normal returns

 

 

phase voltage between

or when the Transfer Control

 

—

transfer switch terminals NB

switch is released.

 

 

and NC, NC and NA, and NA

 

 

 

and NB (or NL1 and NL2 for 2

 

 

 

pole switches).

 

 

 

 

Engine–generator-set does

Wait for Feature 2E time delay

Starting control must be in the

 

not stop after load retransfer

to time out.

automatic position.

—

to the normal source.

 

 

 

 

 

 

 

* These are factory settings. Refer to Controller User’s Guide.

If the problem is isolated to circuits on the controller or the transfer switch, call ASI or your local ASCO Power Technolo- gies sales office. Furnish the Serial No., Catalog No., & BOM No. from the transfer switch nameplate.

MANUAL LOAD TRANSFER

MAINTENANCE HANDLE

This procedure manually transfers load to other source if the Transfer Switch or Control Panel are out of service.

Close enclosure doors to prevent personal injury in case of electrical system fault.

1.Be sure that the Bypass Handle is CLOSED on either Emergency or Normal (see page 3–1).

2.Be sure that the Isolation Handle is in the TEST or ISOLATE position (see page 3–2).

3.Turn the Bypass Handle counterclockwise to OPEN the Bypass Switch. Then Bypass to the other source (see page 3–1).

Bypass and isolate the Transfer Switch before using the maintenance handle! See pages 3–1 and 3–2. Remove the hub and handle after using them and store on frame.

Turn counterclockwise to OPEN contacts.

Turn clockwise to

 

Grasp

CLOSE contacts.

 

handle

slide hub

insert

firmly

 

handle

 

onto shaft

 

into hole

 

& insert pin

 

 

 

Pull out shaft to operate

Push in shaft to operate

Emergency contacts.

Normal contacts.

2---2

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Contents 1600 Rating LabelNameplate Catalog Number IdentificationSupporting foundation and mounting InstallationRemove three Shipping Angles From the Transfer Switch Remove the Shipping SkidInstallation Voltage Checks Functional TestElectrical Operation Turn and hold Transfer Control switch clockwise to TransferReplacement Parts Testing & ServicePreventive Maintenance Disconnecting the ControllerMaintenance Handle Testing & ServiceTROUBLE-SHOOTING Trouble-Shooting ChecksTo Bypass Emergency Source Bypassing & IsolatingBypassing the ATS To Bypass Normal SourceTest Isolate Isolating the ATSTurn crank Counter Clockwise Until Window Shows ConnTurn crank Clockwise Until Window Shows Return to ServiceTurn crank clockwise until window shows Conn connected To Un-Bypass Emergency Source Return to ServiceTo Un-Bypass Normal Source Bypass Handle Turn it Counter ClockwiseSee Controller User’s Guide Index

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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