LED Power Supplies — Installer’s Handbook | LEDownia.pl

Installation Manual: Tridonic essence Series LED Drivers

Foreword

The Tridonic essence series is a comprehensive range of constant current LED drivers engineered for professional luminaire installation. This manual provides professional installers with clear, systematic guidelines for the safe installation, configuration, and maintenance of these drivers. Following these instructions is critical to ensure the optimal performance, safety, and longevity of the entire lighting system.

1.0 Understanding the "Inbuilt" Driver Concept

Understanding the "inbuilt LED controlgear" designation is of strategic importance, as this design principle dictates all aspects of installation, safety, and environmental protection.

An "inbuilt LED controlgear" is a component specifically designed and intended for use within a luminaire enclosure. These drivers are not standalone devices.

The direct consequences of this designation are:

• Enclosure Requirement: The driver's IP20 rating signifies it is protected against solid objects larger than 12.5 mm but offers no protection against moisture. Therefore, it must be installed within a protective luminaire housing that provides the final, complete protection against environmental factors.
• External Use: In applications where the driver is used outside of a conventional luminaire (for example, in illuminated ceilings), the installation itself must be designed to provide suitable and equivalent protection for both people and the environment.

Adherence to this core concept is the first step toward a safe installation, followed by the critical safety warnings below.

2.0 Critical Safety Warnings: Read Before Installation

This section contains the most critical safety warnings for the installation and operation of essence series drivers. Failure to comply with these warnings can result in irreversible equipment damage, will void the manufacturer's warranty, and may pose a significant safety risk to installers and end-users.

• Power Disconnection for Configuration Setting the output current via the onboard DIP switches must only be performed after the mains power supply has been completely disconnected. Adjusting the switches while the driver is energized can damage the internal components.
• Prohibition of Hot-Plugging Connecting, disconnecting, or switching the LED modules while the driver is powered ("hot plug-in") is strictly forbidden. This action can cause a damaging high-current surge to the LED modules, leading to their immediate or premature failure.
• Incorrect High-Voltage Testing Installers and luminaire manufacturers must NEVER conduct a 1500V AC electrical strength test on the assembled luminaire. This high-voltage test will permanently damage the driver's sensitive electronic components. The only approved, non-destructive procedure is a 500V DC insulation test.
• Warranty Conditions The 5-year manufacturer's guarantee is immediately voided if the driver's casing has been opened for any reason.

These safety principles are the foundation for a successful and reliable mechanical and electrical installation.

3.0 Step 1: Mechanical Installation and Environmental Checks

Proper mechanical mounting and strict adherence to environmental limits are fundamental to the driver's performance, thermal management, and long-term reliability.

3.1 Verify Operating Environment

Before installation and operation, ensure the environmental conditions are within the specified limits.

• Ambient Temperature (ta): The allowed ambient operating temperature (ta) varies by model and selected output current. Most flexC and flexCC models operate within a range of -20°C to +60°C, with some extending to +70°C at reduced loads. However, fixC models are typically rated for -20°C to +50°C. Always consult the specific datasheet to confirm the ta limit for your exact configuration, as this is critical for ensuring the driver's expected lifetime.
• Storage Temperature (ts): The allowed storage temperature range is -40°C to +80°C.
• Humidity: The relative humidity must be between 5% and 85%, non-condensing. Operation at 85% humidity is limited to a maximum of 56 days per year.

3.2 Mounting the Driver

Secure the driver using M4 screws with a maximum fixing torque of 0.5 Nm. Overtightening can damage the housing. Physical dimensions and mounting hole spacing vary by model, as detailed below.

Reference Mounting Dimensions

Once the driver is physically secured, you can proceed with the electrical connections.

4.0 Step 2: Electrical Connection and Wiring

Correct wiring practices are essential for functionality, ensuring electromagnetic compatibility (EMI), and protecting the LED modules from damage.

4.1 Wire Preparation and Terminals

• Wire Type: Use stranded wire with ferrules or solid wire with a cross-section of 0.5 – 1.5 mm².
• Strip Length: The insulation must be stripped to a precise length of 8.5 – 9.5 mm to ensure a secure and correct connection in the push-wire terminals.
• Wire Release: To remove a wire, press down firmly on the "push button" above the terminal and pull the cable out from the front.

4.2 Critical Wiring Guidelines

Follow these best practices to ensure system integrity and performance:

• Minimize Connection Length: Keep all wiring, especially on the output side, as short as possible to maintain good EMI behavior.
• Separate Mains Leads: It is recommended to keep mains supply leads separated from the driver and its output leads by a distance of 5–10 cm.
• Limit Output Wire Length: The maximum total length of the wires connecting the driver output to the LED module(s) is 2 m.
• Protect Against Short Circuits: All wiring must be protected from potential short circuits to earth. Ensure wires are not pinched or abraded by sharp metal edges, cable clips, or other luminaire components.
• Prevent Module Damage: Double-check all connections before applying power. Incorrect wiring can cause permanent damage to the connected LED modules.

4.3 Earthing (PE) Requirements

Connecting the protective earth (PE) terminal to the driver's metal housing is recommended to improve EMI behavior and minimize the transmission of mains transients to the LED output.

• Class I Luminaires: For luminaires designated as Class I, the protective earth must be connected to the driver's metal housing.
• Class II Luminaires: A PE connection is not required for the functionality of the driver in a Class II luminaire. For fixC models specifically, the following installation scenarios must be considered:
  • If the driver is screwed to a metal part inside the luminaire, both the driver and the LED module must be properly insulated.
  • If the driver is screwed to a plastic part, only the LED module requires insulation. For all other models, ensure the installation complies with all relevant Class II luminaire safety and insulation standards.

After completing the wiring, the next step is to configure the driver's output current to match the LED load.

5.0 Step 3: Configuring Output Current (flexC & flexCC Models)

The flexC and flexCC models feature selectable fixed output currents, allowing installers to match the driver's output to the specific requirements of the connected LED module. This configuration is performed using the onboard DIP switches. fixC models have a fixed output and do not have these switches.

5.1 Pre-Configuration Safety Check

WARNING: The output current must only be set when the mains power supply is completely disconnected from the driver. Failure to do so can result in equipment damage.

5.2 DIP Switch Setting Guide

Use the following consolidated table to set the desired output current for your specific driver model.

Output Current DIP Switch Configurations

With the driver correctly configured, it's important to understand its automatic protective functions.

6.0 Understanding System Protections and Behavior

essence series drivers are equipped with multiple built-in protection mechanisms. These automatic features are designed to safeguard both the driver and the connected LED module against common electrical faults and adverse operating conditions, ensuring a long and reliable service life.

6.1 Automatic Electrical Protection

• Short-Circuit Protection: In the event of a short circuit on the output, the driver will automatically switch off. For fixC models, it will enter a "hic-cup mode." Once the fault is cleared, the driver will automatically recover and resume normal operation.
• No-Load Protection: If the LED string is disconnected or fails open, the driver detects the no-load condition and enters a "burst working mode." This provides safe constant voltage regulation, preventing damage.
• Overload Protection: If the connected load exceeds the driver's maximum capacity, the driver will protect itself. This may cause the LEDs to flicker. Normal operation is restored automatically once the overload condition is eliminated.

6.2 Overtemperature Protection

The driver is protected against thermal overheating, a crucial feature for an inbuilt component whose temperature is influenced by the luminaire design. This protection operates in one of two ways, depending on the driver model:

• Some models will automatically reduce the output current to the LED module if the internal temperature limit is exceeded, dimming the light to manage heat.
• Other models will switch off completely if the temperature limit is exceeded. They will restart automatically once the internal temperature has returned to a safe level. This protection typically activates at a temperature 7°C to 12°C above the maximum rated case temperature (tc max).

The thermal design of the luminaire is critical. The relationship between ambient temperature (ta) and the driver's case temperature (tc) directly impacts the expected operational lifetime of the driver.

7.0 Maintenance and Final Testing

Proper maintenance and correct final testing are crucial for verifying the installation and ensuring the long-term integrity of the lighting system.

7.1 LED Module Replacement

Follow this exact procedure when replacing an LED module to prevent damage to the driver or the new module:

1. Disconnect the luminaire from the mains power supply.
2. Carefully remove the faulty LED module.
3. Wait for 20-30 seconds. This allows the driver's internal components to fully discharge.
4. Connect the new LED module.

7.2 Luminaire Production Testing (Post-Installation)

To verify the electrical safety of the final luminaire assembly without damaging the driver, use the following approved testing procedure:

• Recommended Test: Perform an insulation test using 500 V DC for 1 second.
• Procedure: The test voltage should be connected between the interconnected phase (L) and neutral (N) terminals and the protective earth (PE) terminal.
• Required Result: The insulation resistance must be at least 2 MΩ.
• Final Warning: Do not, under any circumstances, use a 1500 V AC electrical strength test.

For further detailed technical specifications, please consult the official Tridonic datasheets for the specific driver model.