The Allen Bradley 855T BCB is a versatile and widely used signaling device in industrial control systems. It is used to provide both visual and audible alerts, and is commonly used in applications where noise levels are high and immediate attention is required. In this article, we will discuss the wiring diagram for the Allen Bradley 855T BCB, as well as address some frequently asked questions about this device.
Overview
The Allen Bradley 855T BCB is a modular signaling device that can be configured in a number of ways. It consists of a base, a sound module, and a light module. The base provides the mounting and wiring connections for the sound and light modules. Each module can be configured for different voltage levels and audible or visual signals.
The 855T BCB is designed to be very flexible, and can be configured to meet a wide range of application requirements. It can be used in harsh environments and is suitable for use in hazardous locations.
Wiring Diagram
The wiring diagram for the Allen Bradley 855T BCB is straightforward. The base has six terminals, labeled 1 through 6. These terminals are used to connect the sound and light modules. Terminal 1 is the common terminal, and is used for the negative (-) connection for both the sound and light modules.
The positive (+) connection for the sound module is connected to terminal 4. The positive connection for the light module is connected to terminal 5. The sound and light modules can be connected in parallel, with both positive connections connected to their respective terminals. This configuration allows for both audible and visible alerts to be triggered at the same time.
The wiring diagram for the Allen Bradley 855T BCB is shown in Table 1 below.
| Terminal | Description | Connection |
|---|---|---|
| 1 | Common (-) | Sound and light modules |
| 4 | Positive (+) for sound module | Sound module |
| 5 | Positive (+) for light module | Light module |
| 6 | Not used | – |
FAQ
What is the maximum voltage for the Allen Bradley 855T BCB?
The maximum voltage for the Allen Bradley 855T BCB is 240V AC or DC.
Can the Allen Bradley 855T BCB be used in hazardous locations?
Yes, the Allen Bradley 855T BCB is suitable for use in hazardous locations. It is designed to meet the requirements of the National Electrical Code (NEC), as well as other international standards.
Can the sound and light modules be connected in series?
No, the sound and light modules cannot be connected in series. They must be connected in parallel, with both positive connections connected to their respective terminals on the base.
Can the Allen Bradley 855T BCB be used with other signaling devices?
Yes, the Allen Bradley 855T BCB can be used with other signaling devices. It is compatible with a wide range of other signaling devices and can be integrated into most control systems.
Where can I purchase the Allen Bradley 855T BCB?
The Allen Bradley 855T BCB is available from a variety of industrial automation suppliers and distributors. It can also be purchased directly from Allen Bradley.
Conclusion
The Allen Bradley 855T BCB is a versatile and widely used signaling device in industrial control systems. It is designed to be very flexible and can be configured to meet a wide range of application requirements. The wiring diagram for the 855T BCB is straightforward and easy to follow, making installation and maintenance a breeze. By understanding the wiring diagram and the capabilities of the device, you can ensure that it is used effectively and efficiently in your control system.
