Cooper Bussmann BU-905U-L Wireless I/O Installation Manual

INPUTS AND OUTPUTS

The units have the following inputs and outputs:

 

 

Input/Output

BU-905U-L-T

BU-905U-L-R

Description

For more information, see …

Digital inputs

2

 

Suitable for Voltage free contact,

Digital inputs on page 15.

 

 

 

NPN transistor, 0-5V signal.

 

Relay outputs

 

3

250Vac 1A / 30Vdc 1A.

Relay outputs Important

 

 

 

 

Information on page 17.

Status outputs

2

2

Max 30Vdc, 500mA. Indicate module status,

Status outputs on page 18.

 

 

 

communication failure and local setpoint status.

 

Analog inputs

1

4-20mA with over-range and under-range.

 

 

0-10mA with over-range.

Analog input on page 18.

+24V Loop supply

1

Provides power for 1 external current loop

Installing the power supply

 

 

(up to 35mA).

on page 14.

Analog setpoint

1

Allows discrete setpoint to be controlled from

Refer to the User Manual.

 

 

analog input. Threshold adjustable via

 

 

 

rotary switch.

 

Thermocouple /

1

Provides measurement of E, J, K, T type

Thermocouple input

millivolt input

 

Thermocouple, millivolt signals and user-defined

on page 20.

 

 

thermocouple types.

 

Thermocouple

1

Lets you control discrete setpoint from

Setpoint

 

thermocouple with threshold adjustable via

 

 

rotary switch.

Refer to the User Manual.

Pulse inputs

2

Analog Output

1

For more information, see the next sections.

Up to 10Hz.

Pulse input on page 21.

0-22mA, suitable for loop powered, floating

Analog output

input or single-ended input device.

on page 22.

Digital Inputs

The BU-905U-L-T module provides two digital inputs suitable for:

•Voltage free contacts – e.g., mechanical switches; or

•NPN Transistor devices – e.g., electronic proximity switches; or

•0-5V Signals - 2V – 4V Minimum range.

Note: PNP Transistor devices are not suitable.

3A1580Rev1.6

www.cooperbussmann.com/BussmannWirelessResources

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Cooper Bussmann BU-905U-L installation manual Digital Inputs, Inputs and Outputs
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BU-905U-L specifications

The Cooper Bussmann BU-905U-L is a critical component known for its reliable performance in various electrical applications. This fuse is designed to protect circuits from overloads and short circuits, ensuring the safety and integrity of electrical systems in residential, commercial, and industrial settings.

One of the main features of the BU-905U-L is its high breaking capacity, which allows it to effectively interrupt excessive current flow without damaging connected devices. This feature makes it suitable for use in demanding environments where reliable protection is crucial. The fuse is built to handle transient events, making it ideal for applications subject to short bursts of high current.

The fuse utilizes advanced materials and technologies to enhance its durability and efficiency. Its construction includes a robust, non-combustible housing that offers excellent thermal resistance and mechanical strength. This ensures the fuse can withstand harsh operating conditions while maintaining its protective capabilities. The BU-905U-L is also designed for quick and easy replacement, minimizing downtime during maintenance.

Another significant characteristic of the BU-905U-L is its thoughtful design for ease of installation. It features a standard size that is compatible with various fuse holders, allowing for a seamless integration into existing systems. Additionally, the fuse is marked with clear ratings, enabling users to quickly identify its specifications for proper selection and installation.

In terms of electrical ratings, the BU-905U-L is designed to handle a specific voltage and current, which makes it suitable for a diverse range of applications, including motor protection, lighting circuits, and power distribution systems. These fuses come with various current ratings, offering flexibility for different load requirements.

Moreover, built on a commitment to safety and quality, Cooper Bussmann ensures that the BU-905U-L meets stringent industry standards and certifications. This not only guarantees the reliability of the product but also provides peace of mind to users knowing that their electrical systems are well protected.

In summary, the Cooper Bussmann BU-905U-L fuse combines high performance, advanced material technology, and user-friendly characteristics, making it an invaluable component in any electrical system. Whether for industrial machinery or everyday electrical circuits, this fuse provides essential protection, ensuring safety and reliability in energy management.
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