Description
📌 Product Overview
The GE DS3820LT4A.1C1A is a LODTRAK IV module used in GE Speedtronic Mark IV control systems. The DS3820LT4A family is associated with LoadTrak IV control and motor protection functions, including temperature and current sensing.
The module uses microprocessor-based control technology and provides configurable protection functions for motor-related applications. A relay is incorporated for trip-temperature settings associated with overcurrent units and RTD inputs.
The DS3820LT4A.1C1A is a legacy industrial automation component. It is normally encountered today in maintenance, repair, and spare-parts applications for existing Mark IV installations.
🔧 Key Features
- 🧩 Module Type: LODTRAK IV / LoadTrak IV Module
- 🏷️ Part Number: DS3820LT4A.1C1A
- ⚙️ System: GE Speedtronic Mark IV
- 🌡️ Monitoring: Temperature and RTD-related sensing
- ⚡ Protection: Current / overcurrent monitoring
- 🧠 Control: Microprocessor-based
- 🔔 Protection Output: Relay-based trip control
- 🏭 Application: Motor protection and industrial equipment control
- 🔄 Product Status: Legacy Mark IV component
📋 Technical Information
Manufacturer: General Electric (GE)
Model: DS3820LT4A.1C1A
Product Family: DS3820LT4A
Product Name: LODTRAK IV
System Platform: Speedtronic Mark IV
Module Function: LoadTrak / motor protection control
Sensing Functions: Current and temperature monitoring
Temperature Inputs: RTD-related monitoring
Protection Function: User-configurable trip parameters
Output: Relay-based protection/trip function
Processing: Microprocessor technology
Installation: Mark IV system hardware
⚠️ Exact electrical ratings, terminal assignments, and configuration details should be verified against the specific Mark IV system documentation and the revision installed in the equipment.
⚙️ Functional Description
LodTrak IV is designed to combine motor current and temperature information for equipment protection. The module allows protection settings to be established according to the motor data and application requirements.
Temperature information from RTDs and current-related information can be used by the control logic to determine whether a configured protection threshold has been reached. The associated relay provides a means of implementing the required trip function.
This makes the module particularly relevant when maintaining older turbine-generator or industrial motor control equipment using GE Speedtronic Mark IV technology.
🛠️ Installation & Replacement Guide
Before replacing the module, isolate the equipment and follow the applicable electrical safety procedures.
For replacement work:
- Record the complete part number: DS3820LT4A.1C1A.
- Photograph the existing wiring and terminal-strip arrangement.
- Verify the Mark IV rack position.
- Compare terminal markings and connector locations.
- Check the replacement board for physical damage or corrosion.
- Confirm the hardware revision before installation.
- Recheck motor protection and trip settings after replacement.
- Perform functional testing before returning the equipment to service.
Because the DS3820LT4A family contains multiple hardware configurations, do not assume that every DS3820LT4A variant is a direct replacement for DS3820LT4A.1C1A. Available references show variants including DS3820LT4A.1A1A, DS3820LT4A.1B1A and DS3820LT4A.1C1A.
🏭 Typical Applications
The DS3820LT4A.1C1A is suitable for maintenance of legacy GE Mark IV systems where LodTrak IV functionality is required.
Typical applications include:
- ⚙️ Industrial motor protection
- 🏭 Turbine auxiliary equipment
- 🔌 GE Speedtronic Mark IV systems
- 🌡️ Motor temperature monitoring
- ⚡ Overcurrent protection
- 🛠️ Legacy automation maintenance
- 📦 Critical spare-parts inventory
🔍 Identification Guide
When identifying this module, check the complete catalog marking rather than only the DS3820LT4A prefix.
Key identification:
DS3820LT4A.1C1A
LODTRAK IV
GE Speedtronic Mark IV
The suffix .1C1A is important because other LodTrak IV configurations exist.
❓ FAQ
Q: What is DS3820LT4A.1C1A?
A: It is a GE LODTRAK IV module used within Speedtronic Mark IV systems for motor-related current and temperature monitoring and protection.
Q: Is it a PLC CPU?
A: No. It is a dedicated Mark IV LodTrak/motor protection module.
Q: What does LODTRAK IV monitor?
A: The module is associated with temperature and current sensing for motor protection applications.
Q: Is DS3820LT4A.1C1A interchangeable with DS3820LT4A.1A1A?
A: It should not be assumed to be interchangeable. The suffix identifies a specific configuration, so the existing system documentation and board markings should be checked.
Q: Is this part still commonly used in new automation projects?
A: No. It is a legacy Mark IV component and is primarily used for maintaining existing installations.
🔗 Related GE Mark IV Models
Other GE Mark IV / DS3800-series components that may be encountered in the same maintenance environment include:
- GE DS3820LT4A.1A1A — LODTRAK IV
- GE DS3820LT4A.1B1A — LODTRAK IV
- GE DS3820LT4C.1A1A — LODTRAK IV
- GE DS3820LT4C.1B1A — LODTRAK IV
- GE DS3820LT4C.1C1A — LODTRAK IV
- GE DS3820LT4E.1B1A — LODTRAK IV
- GE DS3820LT4E.1C1A — LODTRAK IV
- GE DS3820LT4E.1D1A — LODTRAK IV
- GE DS3820AIPA1A — Analog I/O Module
- GE DS3820MAUD1A — System Bus Module
The related LODTRAK IV variants are documented within GE Mark IV parts listings; they should be treated as related models rather than automatic substitutes.
