DS3820T1MC - 8-Channel Optocoupler Voltage Isolation Module

SPECIFICATIONS:

Part No: DS3820T1MC
Manufacturer: General Electric
Series: Mark IV
Product Type: 8-Channel Optocoupler Voltage Isolation Module
Number of Channels: 8
Input Voltage Range: 3.3V to 24V
Power Requirements: 24V DC,
Isolation Voltage:2,500V to 5,000V
Insulation Resistance: ≥ 100MΩ
Input Current: 5mA to 20mA
Output Range: 0-10 V, 4-20 mA
Communication Ports: RS232, RS485
Dimensions: 150 mm x 100 mm x 30 mm
Mounting: Standard mounting
Operating Temperature: -40°C to +85°C
Country of Origin: USA
Availability: In Stock

FUNCTIONAL DESCRIPTION:

DS3820T1MC is an 8-channel Optocoupler Voltage Isolation Module manufactured and designed by General Electric and is part of the Mark IV Series used in GE Speedtronic gas turbine control systems. An 8-channel optocoupler voltage isolation module is a device used to electrically isolate different circuits while allowing them to communicate signals with each other. It contains multiple optocouplers (typically 8), each of which uses light to transfer a signal from one side to another, ensuring that there is no direct electrical connection between the circuits. This type of isolation is especially important in systems where different components operate at different voltage levels or in environments where electrical noise or surges could damage sensitive parts of a system.

FUNCTIONS:

• Multiple Channels: An 8-channel module has eight independent optocouplers, allowing eight different signals to be isolated and transferred. Each channel can handle a separate signal, making the module versatile for multi-signal systems.

• Voltage Isolation: The module isolates voltage levels between the input and output. For example, one side of the module might be connected to a 24V industrial control system, while the other side connects to a 5V microcontroller. This prevents damage to sensitive circuits by keeping the higher voltage safely isolated.

• Protection Against Electrical Noise and Surges: By using optical isolation, the module ensures that electrical noise, surges, or spikes in one part of a system do not interfere with or damage the sensitive low-voltage components on the other side.

• Signal Integrity: Optocouplers can help ensure that digital signals (like those in microcontrollers, PLCs, or sensors) are transmitted cleanly between parts of a system without being distorted by electrical interference or differences in ground potential.

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FREQUENTLY ASKED QUESTIONS:

What is an optocoupler isolation module used for?

An optocoupler isolation module isolates two circuits electrically while allowing signal transmission between them. It helps protect sensitive components from high-voltage signals, electrical noise, or surges in industrial control systems, microcontroller projects, and power electronics.

Why is voltage isolation important?

Voltage isolation ensures that different parts of a system operating at different voltage levels (e.g., a 24V industrial sensor and a 5V microcontroller) can communicate without risk of damaging the lower-voltage components. It also protects the system from electrical noise, spikes, and ground loops.

How does an optocoupler work in an 8-channel module?

An optocoupler uses light to transmit signals between circuits. Each channel in the 8-channel module has an LED and a photodetector. The input side powers the LED, which emits light, and the photodetector on the output side converts this light into an electrical signal, thus isolating the input and output electrically.