HELVAR 498 DIGIDIM (S:839936) 8‑Channel Relay Unit

Overview

The HELVAR 498 DIGIDIM (part reference S:839936) is an 8‑channel relay output unit for Helvar DIGIDIM / Imagine intelligent lighting control system. The HELVAR 498 DIGIDIM communicates via DALI or SDIM bus and provides 8 independent volt‑free normally‑open relay outputs, each rated 16 A high‑inrush. It is designed for switching non‑dimmable lighting loads, blinds, contactors and auxiliary equipment in commercial lighting automation. S:839936 is the internal stock / serial reference number.

Features

The HELVAR 498 DIGIDIM supports flexible grouping: 8×1 independent channels, 4×2 paired channels or 2×4 grouped channels. The high‑inrush relay design tolerates large switch‑on surge current for LED drivers and magnetic ballasts. It includes front panel push buttons and LED segment display for local manual operation and status viewing. A wired override input accepts external dry contact trigger for emergency or fire alarm interlock. DIN‑rail polycarbonate housing, IP30 front, terminals IP00. It follows IEC 62386 DALI standard and EN 55015 EMC.

Specs

Device Type: 8‑Channel Relay Output Unit Model: HELVAR 498 DIGIDIM Internal Ref: S:839936 Brand: Helvar Series: DIGIDIM / Imagine Communication: DALI (IEC 62386) or SDIM (not simultaneous) Channel: 8 channels, NO volt‑free relay Rating: 16 A per channel high‑inrush Power Supply: 85–240 V AC universal mains Mounting: NS35 DIN rail Enclosure: Polycarbonate Dimensions: 160 × 90 × 58 mm Weight: 400 g IP Rating: IP30 (body), IP00 terminals Operating Temp: 0°C ~ +50°C Certification: CE, RoHS, EN 61547, EN 55015

Principle

The HELVAR 498 DIGIDIM receives scene and switch commands from the Helvar router / controller over DALI or SDIM bus. The on-board logic drives individual relay contacts to switch mains loads. The local buttons and override input can bypass bus control for manual testing or fire shutdown interlock. Relay grouping and scene behaviour are configured via Helvar Designer software.

Applications

The HELVAR 498 DIGIDIM is used for office, conference centre, hotel, education and public building lighting control to switch non‑dimmable luminaires, motorised blinds and auxiliary contactor loads. The HELVAR 498 DIGIDIM is stocked as spare replacement for existing DIGIDIM and Imagine lighting control cabinets.