Table of Contents
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Table of Contents
Summary of Contents for Acuity Brands eldoLED POWERdrive 50U-M4Z0X
- Page 1 POWERdrive 50W DESIGN GUIDE July 30, 2020...
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Page 2: Table Of Contents
POWERdrive 50W DESIGN GUIDE CONTENTS 1. Introduction ................................... 3 2. Electrical Design ..................................3 Output Characteristics ............................... 3 Electrical Connections ............................... 4 LED load configurations ..............................5 Meeting Title 24/JA8 startup ............................. 7 3. DMX wiring .................................... 7 Remote mounting ................................7 Creating DMX IN and DMX OUT connections for the luminaire .................. -
Page 3: Introduction
1. Introduction Thank you for your interest in the eldoLED POWERdrive 50W DMX LED driver family. This design guide addresses common design features, configurations, and performance considerations when designing a luminaire incorporating any one of the following POWERdrive LED drivers POWERdrive 50U-M4Z0X POWERdrive 50S-M4Z0X (scheduled for release in a few weeks) POWERdrive 50SA-M4Z0X (scheduled for release in a few weeks) -
Page 4: Electrical Connections
4 LED group (4 control channels) POWERdrive Figure 1: A POWERdrive LED driver has 16 color-coded connector poles. Each LED load must have a dedicated (+) and (-) can be programmed to be controlled connection to the POWERdrive LED driver. The 4 LED outputs that independently, grouped, or disabled Electrical Connections A POWERdrive LED driver has 16 color-coded connectors (3 for mains, 8 for LED outputs, 3 for DMX, and 2 for LEDcode /... -
Page 5: Led Load Configurations
Smaller wire sizes can be accommodated in combination with a ferrule Figure 2: LED load configurations Each LED output of the POWERdrive LED driver is powered by a separate current source to enable independent control of each LED output, regardless of the LED load that is connected. However, this flexibility does impose constraints on how LED light engines can be connected to the LED outputs. - Page 6 POWERdrive Multiple driver LED outputs cannot be connected in parallel to increase the total drive current through an LED load. POWERdrive Multiple driver LED outputs cannot be connected in series to support an LED load with a forward voltage > 55V. POWERdrive ...
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Page 7: Meeting Title 24/Ja8 Startup
Meeting Title 24/JA8 startup The POWERdrive LED driver can meet the startup time requirements as specified in California Title 24/JA8 out of the box, i.e. there is no need to order a “special” configuration. However, this does require the test setup to meet certain conditions. -
Page 8: Creating Dmx In And Dmx Out Connections For The Luminaire
Table 2: Maximum allowable cable distance (in ft) as function of the wire gauge and drive current that keeps the voltage drop in the cable below 1V. It is, in general, best to keep the remote mounting distance as short as possible. Depending on the site and application requirements in terms of EMI/RFI emissions and susceptibility, one may consider running remote wiring in conduit or using shielded cables. -
Page 9: Dmx Wire Type
Figure 5: Proper wiring of a DMX fixture is critical to trouble-free operation. To facilitate daisy-chaining of multiple luminaires in a DMX network, each luminaire should provide separate DMX IN and DMX OUT connections. This can be accomplished as shown here. The “T-tap” connection to the DMX IN terminals of a POWERdrive LED driver within the luminaire should be made as short as possible, preferably less than 2 -3 inches. -
Page 10: Grounding
Junction Box DMX IN DMX OUT Ceiling Single cable down stem Pendant Fixture DMX + Shared DMX DMX - shield/drain conductor DMX SHIELD Figure 6: This example shows how a cable with two twisted conductor pairs can be used to bring a DMX signal to a pendant luminaire, while still minimizing the length of the T tap. -
Page 11: Mechanical Installation
Short protection – All LED outputs are turned off whenever the LED driver detects a short circuit on any one of the LED outputs. The LED driver will automatically attempt a restart every 400ms after a short-circuit is detected. Overload protection – The driver monitors the cumulative load across all LED outputs. Whenever this cumulative load exceeds the maximum output power rating of the LED driver, the output current on all LED outputs is gracefully scaled down until the cumulative load drops below the maximum output power rating of the LED driver. -
Page 12: Sound
Sound eldoLED drivers are designed and tested to meet Class A (<24dBA @1m) sound pressure levels under steady state operating conditions. When mounting the POWER LED driver, consideration should be given to the luminaire system and how it may amplify or attenuate any vibrations from the LED driver into the application space. Grounding A POWERdrive LED driver must be grounded for proper EMC and safety performance. -
Page 13: Group Scaling
Figure 8: LED outputs can be set to “active” or “inactive” via the Group Scaling settings in the Control section of FluxTool. Best practice is to set any LED output, which is not connected to an LED load, to “inactive” to ensure optimal LED driver performance. -
Page 14: Ntc Throttling Temperature
Figure 9: Examples of the available interpolation methods in a POWERdrive LED driver. NTC throttling temperature The POWERdrive LED driver can monitor the temperature of an external 47kΩ NTC thermistor that is connected to the LEDcode / NTC terminals. Whenever the NTC temperature exceeds the NTC throttling temperature specified in the Control section of FluxTool, the output current to all LED outputs is immediately decreased to 25% of the actual current. -
Page 15: Dmx Network Settings
may need to be specified. The preferred behavior in the example above is that the maximum output current per LED output is gracefully scaled back as more LEDs are turned on, while still maintaining the proper drive current ratio between the 4 LED outputs to ensure color accuracy. - Page 16 Figure 10: The section DMX network settings in FluxTool gives users full control over the network settings of the driver, including the mapping between DMX channels and LED outputs, network channel count, and network resolution. Picture (a) reflects the scenario where each LED output is tied to a separate DMX address; picture (b) reflects the scenario where all LED outputs are tied to a single DMX address.
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Page 17: Rdm Settings
Figure 11: In this example, LED outputs 2 and 4 are disabled via the group scaling command (a). Even though the driver has only 2 active LED outputs, it may still be desirable to maintain the logical DMX address sequence for LED outputs 1 and 3. -
Page 18: Troubleshooting
What function each channel controls (i.e. downlight, uplight, red, etc.) Default dimming curve of the driver RDM compatibility # of unit loads per fixture (typ. 1 per eldoLED driver) DMX run termination Provided by others/installer? Provided in the fixture? DMX connection type (wire colors, connector types, etc.) Pigtail, RJ45, XLR, others? Mapping between wire color and function Default power-on operation without DMX input (i.e. -
Page 19: References
2. Validate the function of the driver/fixture. 3. Validate the DMX network. To validate the function of the driver, use the following steps: 1. Isolate the driver from the DMX network. Keep the LED load connected to the driver. Power the driver. 2.
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