5441-635 - Opto Isolator Module

SPECIFICATIONS:

Part Number: 5441-635
Manufacturer: Woodward
Product type: Opto Isolator Module
Isolation Voltage: Up to 5 kV
Data Rate: Supports high-speed data transmission with a maximum speed of 10 Mbps
Input Current: 10-20 mA
Output Voltage: 5V
Operating Temperature Range: -40°C to +85°C
Response Time: < 100 ns
Mounting Type: Surface-mount or through-hole
Package Type: 8-pin DIP or 8-pin SOIC
Country of Manufacture: United States

FUNCTIONAL DESCRIPTION:

5441-635 is an Opto Isolator Module manufactured and designed by Woodward as part of the 5400 Series used in Turbine Control Systems. This allows signal transmission without direct electrical connection, offering critical protection and noise immunity in electronic systems. These modules are widely used in industrial automation, turbine and generator controls, communication systems, and microcontroller interfaces. When an input electrical signal is applied to the LED, it emits light proportional to the signal. This light crosses a small gap and is received by the photosensitive element, which in turn generates an output electrical signal.

FEATURES OF OPTO ISOLATOR MODULE:

• The TMR platform can be expanded into multiple chassis as needed to support any mix of I/O, including networked and distributed I/O. The TMR main control chassis comes in only one size, with 18 VME slots. The control section takes up all of the available slots. The power supply is a separate chassis that connects to the MicroNet TMR main control chassis's lower right or left side.

• Using the Plus8 or Plus14 chassis options, the MicroNet TMR control can be expanded to a multi-chassis system. The expansion racks may also be the older Simplex6 or Simplex12 chassis for field upgrades. Each expansion chassis has its own dedicated power supply, control, and I/O sections.

• Opto-isolators are designed to support a wide range of input voltages, typically from 5V to 24V DC. Some modules are also capable of handling AC signals, making them versatile for various applications. The ability to accept multiple input voltage levels allows these modules to be integrated into different types of systems without the need for additional complex components.

PRODUCT ATTRIBUTES:

• The Isolator incorporates advanced optoelectronic technology to achieve its function. It consists of an input side and an output side, which are electrically isolated from each other. The input side typically consists of an LED (Light-Emitting Diode), while the output side features a photosensitive component such as a phototransistor or photodiode.

• When an electrical signal is applied to the input side, the LED emits light proportional to the input signal. The light then illuminates the photosensitive component on the output side, which generates a corresponding output signal. This optical coupling allows for signal transmission without direct electrical connection, ensuring isolation and protection.

• Firstly, it provides galvanic isolation, which means that there is no direct electrical connection between the input and output sides. This isolation prevents the transfer of high voltages, currents, or noise from one circuit to another, safeguarding sensitive components and systems.

• Moreover, the Isolator has a high voltage isolation rating, allowing it to handle significant voltage differentials between the input and output sides. This capability further enhances the protection of circuits, especially in applications with high voltage potentials.

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FREQUENTLY ASKED QUESTIONS:

What is the typical isolation voltage rating of an Opto Isolator?

The isolation voltage of an opto isolator is the maximum voltage that can exist between the input and output without compromising the isolation. Typically, opto-isolators have isolation voltages ranging from 2 kV to 5 kV, but some advanced models can go higher, depending on the specific application and module design.

What is the typical forward voltage of the LED in an Opto Isolator?

The forward voltage of the LED in an opto isolator typically ranges from 1.1V to 1.4V for standard models. The value may vary slightly depending on the current passing through the LED and the specific module's design. The LED typically operates within a current range of 5 mA to 50 mA.

What is the current transfer ratio (CTR) in an Opto Isolator?

The Current Transfer Ratio (CTR) refers to the ratio of the output current to the input current in the opto isolator. It is expressed as a percentage and indicates the efficiency of signal transfer. For instance, a CTR of 50% means that the output current is 50% of the input current. Typical CTR values range from 20% to 1000%, depending on the type and design of the opto-isolator.