Overview

The Vimar VM01976 is a By-me Marine DIN rail actuator with a 1-10 V DC control output (30 mA max) for LED driver dimming and a normally-open 12-24 V relay output rated up to 10 A for switching a low-voltage circuit.

It uses an auxiliary supply of 12-24 V AC (50/60 Hz) or 12-24 V DC (SELV) and connects to the By-me bus (29 V). In a panel it occupies 3 DIN modules (17.5 mm each) on a 60715 TH35 rail, which helps when space is tight in a helm or equipment-locker enclosure.

On board, it is commonly used when you want dimming control from the By-me system for cabin, cockpit, or courtesy lighting that runs through a 1-10 V dimmable LED driver, while keeping a separate switched output available on the same module.

Key features

• 1-10 V DC dimming output for LED driver control, up to 30 mA.
• Normally-open relay contacts (NO, C) for 12-24 V circuits, rated up to 10 A for resistive loads and LED spotlights (20,000 cycles).
• Auxiliary supply accepts 12-24 V AC or 12-24 V DC (SELV), with ±10% tolerance.
• By-me bus connection (rated bus 29 V) with a configuration button and status LED for commissioning.
• DIN rail mounting on 60715 TH35, with a 3-module footprint (3 x 17.5 mm).
• Up to 10 m maximum between the actuator and the LED driver when using twisted cable for the 1-10 V control run.
• Specified operating temperature range of -5 °C to +45 °C for indoor installations.
• Submitted to salt mist and vibration testing for marine use (IEC 60068-2-52 Test Kb and IEC 60068-2-6 Test Fc).

Installation and setup

This unit is meant to live inside a protected electrical cabinet, not out in open spray zones. Mount it on a TH35 DIN rail, bring in the By-me bus line, then wire the auxiliary 12-24 V supply and the 1-10 V control pair to the LED driver input.

Keep the 1-10 V control wiring tidy and follow the recommended 10 m maximum run to the driver when using twisted cable. The relay feeding circuit should be protected against overloads with a fuse rated no higher than 12 A.

Electrical and system integration

The actuator is configured from a By-me control unit using the onboard configuration button and LED. It supports one functional block that can be assigned to up to 4 groups, and it can store and recall states in up to 4 scenarios.

For fine-tuning dimming behavior, parameters include adjustment speed (low, medium, or high) and a minimum-output offset that can be set from 1 to 2 V (default 1.2 V).

Compatibility and fit

Use this actuator with LED drivers that accept 1-10 V analog dimming. The relay output is intended for 12-24 V loads, and the contacts provided are normally-open with common (NO, C).

This is a good match for boats already running a By-me Marine automation bus that need to add controlled dimming to a 1-10 V lighting driver and still want a dedicated low-voltage relay output available in the same panel.