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Product Information
The LTECH LM-75-24-G1M2F (upgraded NFC series) is a constant-voltage dmx led driver engineered to supply up to 75W at 24VDC from a 200-240VAC line input. Operating with standard DMX512 and bidirectional RDM protocols alongside AC Push DIM capability, this unit delivers deep linear dimming down to 0.1% with an operating PWM frequency up to 3600Hz. That high switching speed satisfies IEEE 1789 standards to achieve the exemption assessment tier for flicker-free operation, making it ideal for broadcast studios, galleries, and hospitality venues. Running at 93% typical electrical efficiency with an active power factor exceeding 0.97 at 230VAC, this compact 293×43×30mm unit serves as a direct led driver replacement for legacy DMX setups running 24V single-color or architectural LED tape.
Core Technical Capabilities
Dual Protocol Interface
Supports standard DMX512 control with RDM bidirectional device management alongside integrated AC Push DIM functionality.
0.1% Deep Dimming
Enables ultra-low 0.1% to 100% smooth dimming response without visible stutter, step distortion, or low-end dropout.
IEEE 1789 Flicker-Free
Operates at a PWM frequency up to 3600Hz to achieve the high-frequency exemption assessment level for flicker-free video capture.
High Energy Conversion
Achieves 93% typical efficiency and a power factor greater than 0.97 at 230VAC full load, with standby draw below 0.5W.
Automated Recovery Protections
Integrated safeguards automatically intervene against overload (≥102%), over-temperature (≥110°C PCB), over-voltage (≥26V), and short circuits.
Slim Form Factor
Measures 293×43×30mm with removable terminal covers and integrated strain-relief wire pressing boards for tight ceiling coves.
Engineering and Compliance Advantages
- Delivers regulated 24VDC constant voltage output up to 3.12A (75W total) across a wide 200-240VAC (50/60Hz) operating grid.
- Total Harmonic Distortion (THD) remains below 14% at 230VAC full load, minimizing network feedback and heat generation.
- Control surge capability withstands L-N 2KV line disturbances with an insulation dielectric strength of 3750VAC.
- Compliant with SELV (Safety Extra Low Voltage) standards, IEC/EN61347-1, IEC/EN61347-2-13, and EN55015 emission limits.
- Equipped with non-volatile memory for Push DIM that retains adjusted brightness states through electrical power cycles.
Technical Specifications
| Parameter | Details |
|---|---|
| Model | LM-75-24-G1M2F (LM-75-24-G1M2 series) |
| Output Voltage | 24VDC |
| Output Voltage Range | 24VDC ±0.5VDC |
| Output Current | Max. 3.12A |
| Output Power | Max. 75W (0~75W continuous) |
| Ripple & Noise | ≤200mV |
| PWM Dimming Frequency | ≤3600Hz |
| Dimming Range | 0~100%, dimming depth: 0.1% |
| Dimming Interface | DMX512/RDM, Push DIM |
| Input Voltage | 220V±20% (EU, UK, AU), 200-240VAC |
| AC Frequency | 50/60Hz |
| Input Current | Max. 0.4A / 230VAC |
| Power Factor (PF) | >0.97 / 230VAC at full load |
| Total Harmonic Distortion (THD) | ≤14% at 230VAC at full load |
| Efficiency (Typical) | 93% |
| Standby Power Loss | <0.5W |
| Inrush Current | Cold start 30A at 230VAC |
| Surge Protection | Line to Neutral: 2KV |
| Leakage Current | Max. 0.5mA |
| Over-Heat Protection | Power throttling or shut down at PCB ≥110°C; auto recovers |
| Over-Load Protection | Shut down output when load ≥102%; auto recovers |
| Over-Voltage Protection | Shut down output when non-load voltage ≥26V; power cycle to recover |
| Short Circuit Protection | Shut down output automatically; auto recovers |
| Working Temperature | ta: -20°C ~ 50°C, tc: 80°C |
| Working Humidity | 20 ~ 95% RH, non-condensing |
| Dimensions (L×W×H) | 293 × 43 × 30 mm |
| Product Weight | 300g ± 10g |
Where to Deploy the LM-75-24-G1M2 Driver
How to Wire & Install This Power Supply
- Confirm that your incoming mains power supply matches 200-240VAC (50/60Hz) and that your lighting load uses 24VDC constant-voltage architecture.
- Calculate continuous power consumption, verifying that total connected fixtures do not exceed the 75W (3.12A) continuous threshold.
- Unclip the snap-on terminal covers on both ends of the driver casing using a flat-blade tool at the release slots.
- Wire mains Live (L) and Neutral (N) to the AC input terminals; if using Push DIM, connect the momentary switch between the L line and the Push DIM terminal.
- For DMX networks, connect DMX+, DMX-, and Shield (GND) lines in daisy-chain configuration; terminate the final device on the bus with a 120-ohm resistor.
- Wire the 24VDC load to the DC output terminals observing correct positive (+) and negative (-) polarity.
- Secure the wiring jackets under the integrated wire pressing board, reattach the protective covers, and apply primary AC power to test dimming response.
- This driver is intended for 200-240VAC line voltage regions (EU, UK, AU) and will not operate on standard 110-120VAC grids.
- Designed strictly for resistive current-limiting loads such as standard 24V LED strip lights. Connecting fixtures with onboard constant-current ICs causes high inrush surge and triggers hiccup protection.
- Maintain a minimum 15-20% electrical headroom (load ≤60W) to optimize thermal lifespan when installed inside enclosed or poorly ventilated cavities.
- Observe strict dimming interface priority: DMX/RDM commands take precedence over Push DIM control lines when both are wired.
- Rated IP20 for indoor dry environments; install inside a NEMA/IP-rated weather-tight junction enclosure if deployed outdoors.
What's in the Box
- ✓1 × LTECH LM-75-24-G1M2F 75W 24VDC Intelligent DMX/Push DIM Driver
- ✓1 × Factory Instruction Manual with Wiring Schematics
⇩ Downloads & Documents
Frequently Asked Questions
Q: what is an led driver
A:An LED driver is a self-contained power supply that converts incoming high-voltage alternating current (AC) into the regulated low-voltage direct current (DC) required by LED fixtures.
Q: what does an led driver do
A:An LED driver regulates electrical voltage and current to match the specifications of connected LEDs while managing dimming signals and protecting circuits against overloads, over-temperature, and short circuits.
Q: is an led driver a transformer
A:An LED driver contains a transformer to step down high AC voltage to 24VDC, but it also integrates rectification, filtering, electronic feedback loops, and intelligent PWM dimming microprocessors that basic magnetic transformers lack.
Q: how to test a led driver
A:To test an LED driver, disconnect the load, measure the input terminals with a multimeter set to AC voltage (verifying 200-240VAC), and measure the DC output terminals with a DC voltmeter to ensure a steady 24VDC reading.
Q: Can I use the LM-75-24-G1M2 as a replacement led driver for my existing system?
A:Yes, it functions as a direct led light driver replacement for failed 24V units up to 75W, provided your mains input is 200-240VAC and your control protocol is DMX512 or Push DIM.
Q: Why does my LED fixture flash on and off in hiccup mode after turn-on?
A:The driver is designed for standard resistor current-limiting LED strip lights. Connecting fixtures with onboard constant-current ICs creates an instantaneous surge that trips the driver overload protection (≥102%).
Q: Does this dmx driver support RDM remote addressing?
A:Yes, this dmx driver supports standard RDM (Remote Device Management) protocol, allowing lighting consoles or RDM programmers to query status and rewrite DMX addresses remotely through the data line.
Q: What is the dimming range and PWM frequency of this unit?
A:The LM-75-24-G1M2 dims smoothly from 0% to 100% with a minimum depth of 0.1%, switching at up to 3600Hz PWM to ensure flicker-free lighting according to IEEE 1789 criteria.
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Downloads
Files for LM-75-24-G1M2FImages
These images were taken with Canon EOS 5D Mark IV and the studio light source is provided by Ra 98's full spectrum LED strip to realistically reproduce the colors of the item itself. All copyrights are created by the superlightingled team, please feel free to browse and download if you are a registered user!
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