Schaudt LT 320 Installation Instructions Manual

The Schaudt LT 320 is a professional-grade electrical control unit designed for integration into vehicle systems, providing power management, monitoring, and control functions. This manual covers essential safety guidelines, component identification, wiring procedures, configuration steps, and operational verification for proper installation. Below are the key sections for installation preparation, step-by-step procedures, specifications, and troubleshooting.

1. Safety Precautions 2. Component Overview 3. Installation Requirements 4. Wiring & Connection Procedure 5. Configuration & Setup 6. Technical Specifications 7. Initial Power-Up & Testing 8. Error Codes & Diagnostics 9. Maintenance Guidelines 10. Regulatory Compliance 11. Troubleshooting

Safety Precautions

Critical safety measures to prevent injury and equipment damage during installation.

Hazard	Preventive Action
Electrical Shock	Disconnect vehicle battery before beginning installation.
Short Circuits	Ensure all power lines are insulated and properly terminated.
Overheating	Install unit in a well-ventilated area away from heat sources.
Incorrect Voltage	Verify vehicle system voltage matches LT 320 specifications.
Mechanical Stress	Secure unit firmly using provided mounting brackets.

Component Overview

Key components included in the LT 320 package.

LT 320 Control Unit Main Module
Mounting Bracket Set with Hardware
Wiring Harness Connector Set
Fuse Holder and Fuses (10A, 20A)
User Manual and Installation Guide

WARNING! Inspect all components for damage before installation. Do not install damaged parts.

Installation Requirements

Tools and conditions needed for successful installation.

Disconnect negative terminal of vehicle battery.
Select mounting location: dry, vibration-minimized, accessible.
Ensure ambient temperature range: -20°C to +70°C.
Have tools ready: screwdrivers, wire strippers, multimeter, torque wrench.
Verify vehicle electrical system: 12V or 24V DC as per model.

CAUTION! Installation must be performed by qualified personnel only.

Wiring & Connection Procedure

Power Input: Connect to vehicle battery via appropriate fuse.
Ground Connection: Secure to clean, unpainted chassis point.
Load Outputs: Connect to intended devices (lights, pumps, etc.).
Control Signals: Connect to switch panels or CAN bus as required.
Sensor Inputs: Connect temperature, voltage, or current sensors.

Configuration & Setup

Access configuration via built-in interface or external programming tool.

Manual Settings: Use DIP switches for basic voltage thresholds. Software Setup: Connect to PC via programming interface to set load profiles, timers, and protection parameters.

Configuration Steps: 1. Set operating voltage (12V/24V). 2. Configure load outputs (continuous/pulsed). 3. Set overload and short-circuit protection limits. 4. Program timer functions if applicable. 5. Save configuration to non-volatile memory.

Technical Specifications

Antenna: Rear connector. AV: AV1/AV2 for composite/S-Video. PC: VGA + audio.

Input Voltage: 10-32V DC (auto-ranging).
Max Continuous Current: 30A per channel (total load dependent).
Protection: Overload, short-circuit, reverse polarity, over-temperature.
Communication: CAN bus 2.0B, optional LIN interface.
Operating Temperature: -20°C to +70°C.
Enclosure Rating: IP65 (dust and water resistant).

Tip: Refer to wiring diagram for correct pin assignments.

Initial Power-Up & Testing

Procedure to verify correct installation and operation.

Reconnect vehicle battery.
Apply power to LT 320 unit.
Check status LED: Green indicates normal operation.
Test each output channel with connected load.
Verify communication with vehicle network (if applicable).
Monitor for abnormal heating or noise.
Confirm all configured functions operate as intended.

WARNING! If LED flashes red, immediately disconnect power and check for faults.

Error Codes & Diagnostics

LED indicators and error code descriptions.

LED Pattern	Meaning	Action
Solid Green	Normal Operation	None required.
Flashing Green	Standby / Sleep Mode	Activate via control signal.
Flashing Red (1x)	Overload Condition	Reduce connected load.
Flashing Red (2x)	Short Circuit	Check wiring for faults.
Flashing Red (3x)	Over-temperature	Allow unit to cool; improve ventilation.

Maintenance Guidelines

Periodic checks to ensure long-term reliability.

Monthly: Inspect connections for tightness and corrosion. Quarterly: Clean exterior with dry cloth; ensure ventilation paths are clear. Annually: Verify calibration of protection thresholds using test equipment.

CAUTION! Do not open the unit casing. Internal maintenance must be performed by authorized service personnel.

Regulatory Compliance

This device complies with relevant EU directives (EMC, RoHS) and automotive standards. CE marked. For technical support or documentation, visit www.schaudt.com or contact +49 (0)711 346 700.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power (LED off)	No input voltage / Blown fuse	Check battery connection and main fuse.
Output not activating	Configuration error / Faulty load	Verify output configuration and test load separately.
Unit overheating	Insufficient ventilation / Excessive load	Relocate unit or reduce total connected load.
CAN communication failure	Wiring fault / Incorrect termination	Check CAN H/L wires and ensure 120Ω termination resistor is present.
Intermittent operation	Loose connection / Voltage drop	Inspect and secure all terminals; measure voltage at unit during operation.

Reset: Disconnect power for 60 seconds to perform hard reset.

Service: Contact authorized Schaudt service center. www.schaudt.com