474 – DIN Rail 4-Channel Ballast Controller

The DIGIDIM Helvar’s range of products based on the DALI standard. The DIGIDIM range is composed of a series of controllers and lamp interface units that are designed to communicate using DALI commands. 474 is a four-channel A channel pertaining to a load (also known as control gear or LIU), see entry for load. A ballast has one channel, whereas a dimmer or relay unit can have numerous channels. ballast controller fitted with high-inrush relays rated at 16 A per channel, which handle short-lived high peak currents during switch-on of loads.

The outputs can be configured to match common ballast control loads including 0/1–10 V, DSI® A protocol used for the controlling of lighting in buildings. The technology uses a single byte to communicate the lighting level. DSI® (Digital Signal Interface) was the start of digital communication technology and the precursor to DALI. DSI® is a registerd trademark of Tridonic GmbH., DALI Stands for Digital Addressable Lighting Interface. Standardised digital protocol for lighting control, allowing communication between control devices and LIUs (control gear). broadcast and PWM Stands for ‘Pulse Width Modulation’. PWM can be used to reduce the total amount of power delivered to a load, without losses normally incurred when a power source is limited by resistive means..

The outputs can be configured independent of, or paired with, relay channels, so that four additional outputs can be utilised if required.

The 474 ballast controller can operate with either a Helvar DIGIDIM or Imagine Helvar’s range of products based on Helvar’s SDIM protocol. lighting control system. It is a DIN-rail mounted device A physical item with which you can interact, either directly or via Designer. for ease of installation.

For more information, visit the Helvar Website.