---
lang: "en"
title: "LDALI-PWR4-U: 4-line Power Supply"
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---

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LDALI-PWR4-U: 4-line DALI Power Supply. DALI 2.0 certified

The DALI-2 power supplies LDALI-PWR2-U and LDALI-PWR4-U are used to power two or four DALI channels. Per channel, the power supplies provide a guaranteed supply current of 116 mA to power devices connected to the DALI channel.

 

In case the DALI devices connected to the channel consume more than 116 mA, two DALI outputs of the power supplies can be used in parallel, providing a guaranteed supply current of 232 mA (maximum supply current of 250 mA).

 

## Installation

 

The DALI channel is treated as non-SELV (Safety Extra Low Voltage). Therefore, installation rules related to low voltage apply. The cable for a DALI channel is limited to a maximum length of 300 m using a minimum wire cross-section of 1.5 mm² (AWG15) or must ensure a maximum voltage drop of 2 V.

 

## Wide-range Power Supply Voltage

 

The power supplies accept a wide range of supply voltages from 85-240 V AC, 50/60 Hz. They also feature inrush current limitation.

 

## DALI Power Outputs

 

The DALI power outputs provide 18 V (11 V - 20.5 V) and 116 mA. The power outputs are isolated from the mains supply by basic insulation. The power outputs are short-circuit proof and shut down if thermally overloaded. When a thermal overload occurs, the DALI control lamp turns off.

 

LDALI-PWR2-U and LDALI-PWR4-U are DALI-2 certified.

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Source: https://shop.marcomweb.it/en/dali/ldali-pwr4-u-4-line-power-supply

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.