Consilium, SAL SD4-3 704243B1 Speed Log Master Display

The Consilium SAL SD4-3 (Part Number 704243B1) is a crucial component of the Consilium SAL Speed Log system, specifically functioning as the Master Display unit. It’s designed to provide clear, real-time indication of a vessel’s speed and distance traveled, which are vital for safe navigation and efficient ship operation.

Core Function and Purpose:

The SAL SD4-3 Master Display’s primary role is to visually present the speed through water (STW) and/or speed over ground (SOG) data measured by the main speed log transducer and electronics unit (e.g., SAL R1a ELC). It also typically displays total distance sailed (DIST WAT) and trip distance (TRIP WAT). As a “Master Display,” it acts as the central interface for viewing this information and often for configuring certain parameters of the connected speed log system.

Technical Specification

Display and Indication:

Display Type: Digital display (likely LED-based), typically with:
- Speed Display: Numeric, often 4-digit, showing speed through water (STW) and/or speed over ground (SOG).
- Distance Counters: Numeric display for total distance (DIST WAT) and resettable trip distance (TRIP WAT).
- Direction Indicators: LED arrows (e.g., green for ahead, red for astern).
Backlight: Adjustable display backlight/brightness (DIM function) for various lighting conditions.
Operating Modes: Displays Speed Through Water (STW) as its primary function. Can switch between total and trip distance.

Electrical:

Power Supply: 10 – 32 VDC (Volts Direct Current) – this means it can operate on both 12V and 24V nominal ship’s power systems.
Power Consumption: Typically low, as it’s a display unit; detailed power consumption is usually part of the overall SAL Speed Log system’s electronics unit (ELC).
Input Data: Receives processed speed log data from the SAL Speed Log Electronic Unit (ELC), which processes the raw transducer signals. This data is typically via a proprietary serial link from the ELC unit.

Physical and Environmental:

Dimensions (Approximate):
- Height: 144 mm (5.67 inches)
- Width: 144 mm (5.67 inches)
- Depth: 16 mm (0.63 inches) – this is the depth of the display front; actual mounting depth will be greater for the housing and connections.
Weight (Approximate): 0.6 kg (1.32 lbs)
Mounting: Designed for flush-mount installation in a bridge console or panel.
Construction: Robust marine-grade materials suitable for bridge environments.
Operating Temperature: $- 1 5^{\circ} C$ to $+ 5 5^{\circ} C$ (typical for marine bridge equipment).
Compass Safe Distance: 0.3 meters (indicates the minimum distance to avoid interference with magnetic compasses).
Protection Grade: Typically designed to meet marine bridge requirements, e.g., IPX2 or similar for a protected area.

System Integration:

Part Number: 704243B1
Compatibility: Master Display for Consilium SAL R1a (Water Track) Speed Log systems and potentially other compatible SAL Speed Log series.
Connectivity: Connects to the main Speed Log Electronic Unit (ELC) which handles the transducer interface and primary data processing.
Calibration: Features easy setup and calibration procedures that can be performed from the bridge via the SD4 display.