Emerson 7ACTB Bypass Handle Turn it Counter Clockwise, You can only bypass to the same source

Page 11

BYPASSING & ISOLATING

(continued)

RETURN TO SERVICE continued*

 

 

 

 

 

 

 

 

 

This procedure explains how to return the Bypass Switch

 

 

 

 

You can only bypass to the same source

Handle to the OPEN position. The Bypass Handle must

that the ATS is connected. Solenoid

be in the CLOSED position (yellow indicator on NOR-

interlock prevents incorrect operation.

MAL or EMERGENCY) and the Isolation Handle must

1 Observe which Bypass Switch Position indicator is

be in the TEST position (window). If the handles are not

yellow (NORMAL or EMERGENCY) at the Bypass

in these positions, refer to Return to Service on page 3–3.

Switch Handle. This indicates the source connected

See Figures 3–11, 3–12, and 3–13.

 

 

to the load.

 

 

2 Un–Bypass to same source as the Bypass Switch

 

 

Position as follows (select Normal or Emergency).

 

 

Indicator shows:

 

 

yellow EMERGENCY CLOSED

 

 

when ATS is bypassed to Emergency

Indicator shows:

or

 

 

green OPEN when the

yellow NORMAL when ATS is

bypassed to Normal Source.

ATS is not bypassed.

 

 

To un–Bypass Normal push in handle all the way & turn it counterclockwise.*

To un–Bypass Emergency pull out handle all the way & turn it counterclockwise.*

Figure 3–11. Bypass Handle and position indicators.

To Un–Bypass Normal Source*

(Load connected to Normal Source)

The Transfer Switch Connected To Normal light is on and Transfer Switch Connected To Emergency light is off.

Push in* the Bypass Handle then turn it counterclockwise until Bypass Switch Position shows OPEN (green indica- tor). The Unit Not in Automatic light should be off.

Push in

Bypass Switch

E

Bypass

 

 

Handle

 

 

&

 

 

turn it

 

 

counter-

 

L

clockwise.

 

 

 

 

 

N

 

ATS

 

Figure 3–12. Un–Bypass Normal.

 

To Un–Bypass Emergency Source*

(Load connected to Emergency Source)

The Transfer Switch Connected To Emergency light is on and Transfer Switch Connected To Normal light is off.

Pull out* the Bypass Handle then turn it counterclock- wise until Bypass Switch Position shows OPEN (green indicator). The Unit Not in Automatic light should be off.

Pull out

Bypass Switch

E

Bypass

 

 

Handle

 

 

&

 

 

turn it

 

 

counter-

 

L

clockwise.

 

 

 

 

N

 

ATS

 

Figure 3–13. Un–Bypass Emergency.

 

The Automatic Closed–Transition Transfer & Bypass–Isolation Switch should be left in this position.

*NOTE: When Accessory 66A (reversed Normal & Emergency connections) is specified, the handle push–pull operation is reversed. Follow instructions on the door.

3---4

Image 11
Contents 1200 Rating LabelNameplate Catalog Number IdentificationSupporting foundation and mounting InstallationRemove three Shipping Angles From the Transfer Switch Remove the Shipping SkidInstallation Voltage Checks Use extreme caution when using a meterFunctional Test Electrical Operation Turn and hold Transfer Control switch clockwise to TransferTransfer Test Testing & ServicePreventive Maintenance Disconnecting the ControllerMaintenance Handle Testing & ServiceTrouble-Shooting Checks TROUBLE-SHOOTINGPull out Bypassing & IsolatingPush Bypass Handle Turn it ClockwiseIsolating the ATS Turn crank Counter Clockwise Until Window ShowsTurn crank clockwise until window shows Conn connected Turn crank Clockwise Until Window ShowsInterlock prevents incorrect operation Bypass Handle Turn it Counter ClockwiseYou can only bypass to the same source That the ATS is connected. SolenoidSee Controller User’s Guide Index

7ACTB specifications

The Emerson 7ACTB is an advanced electronic device designed to optimize and streamline temperature and pressure monitoring in various industrial applications. Leveraging state-of-the-art technologies, the 7ACTB stands out for its precision, reliability, and ease of use.

One of the main features of the Emerson 7ACTB is its dual-channel capability, allowing simultaneous monitoring of two separate points. This flexibility makes it particularly useful in processes where multiple temperature or pressure readings are necessary for effective control and management. The device is equipped with high-resolution sensors that ensure accurate readings, minimizing the risk of errors that can lead to inefficiencies or safety concerns.

The 7ACTB utilizes cutting-edge communication protocols, including Modbus and HART, which facilitate easy integration with existing control systems. This enhances connectivity and ensures seamless data transfer between the device and central monitoring systems, allowing operators to make quick and informed decisions.

In terms of display, the Emerson 7ACTB features an intuitive user interface with a high-definition LCD screen that presents real-time data clearly and concisely. The menu navigation is straightforward, making it accessible for personnel with varying levels of technical expertise. Users can easily configure settings, calibrate the sensors, and review historical data logs, which are crucial for auditing purposes and troubleshooting.

Another significant characteristic of the Emerson 7ACTB is its robust construction, designed to withstand harsh industrial environments. Its housing is built with durable materials that offer protection against dust, moisture, and extreme temperatures, ensuring the device operates effectively in challenging conditions.

Furthermore, the device boasts advanced diagnostic capabilities, enabling proactive maintenance checks. This feature allows users to identify potential issues before they escalate, reducing downtime and maintenance costs.

The Emerson 7ACTB also adheres to rigorous safety and regulatory standards, making it compliant with industry requirements. Its reliability and performance have made it a preferred choice among engineers and operators looking to enhance process efficiency while maintaining safety and compliance.

In summary, the Emerson 7ACTB combines precision measurement, advanced technology, and robust design, making it an essential tool for effective temperature and pressure monitoring in various industrial settings.