Blue Sea Systems M2 OLED Digital Monitor - 1838 AC Multimeter QuickStart Installation Guide

1838 AC Multimeter

The M2 OLED Digital Monitor 1838 AC Multimeter is designed for monitoring AC electrical systems.

Components Included

• M2 Head Unit: The main digital display and control unit.
• Surface Mount Bezel: A frame for mounting the unit on a surface.
• Surface Mount Gasket and Seal: A gasket to ensure a watertight seal for surface mounting.
• Surface Mount Cover: A protective cover for the unit during installation.
• Flat Mount Bezel: A frame for flush mounting the unit into a panel.
• Flat Mount Clamp: A clamp mechanism used for flat mounting.
• Mounting Ring: A ring that helps secure the unit in place.
• Mounting Nut: A nut used to tighten the mounting ring.
• AC Current Transformer 8256 (1X): A transformer to measure AC current, typically rated 150A/50mA.
• Connector: A terminal block for wiring connections.
• Screwdriver (retail package only): A tool included in some packages.
• 360 Panel Mounting Kit PN 1525 (sold separately): An optional accessory for panel mounting.

Connector Pin Assignment

The M2 OLED Digital Monitor features a connector with specific pin assignments:

M2 Meter Navigation

Screen Menu Functions:

Press any button to bring up the menu.

1. After start-up, press any button to access the menu.
2. Press the [Up Arrow] or [Down Arrow] buttons to scroll through menu windows.
3. To set alarms and for more detailed information, see the online manual at bluesea.com/products/1838.

System Overview: 1838 AC Multimeter Connections

The system diagram illustrates the connections for the 1838 AC Multimeter. It shows how to connect two AC shore power inputs (Shore 1 AC and Shore 2 AC) to the unit. Voltage inputs (AC1 H, AC1 N, AC2 H, AC2 N) are connected to the AC supply via fuses. Current transformers are used for AC current measurements (AC1 Amps, AC2 Amps). The unit also features a USB port, relay outputs, and DC power connections (DC Ground, DC Supply 8V-70V). An optional transformer and LED indicators are also depicted.

Example Readings:

• Shore 1 AC: 119 V, 4.5 A, 60 Hz, 0.53 kW
• Shore 2 AC: 120 V, 5.5 A, 61 Hz, 0.66 kW
• 120/240 AC (when enabled): 239 V, 4.5 A, 5.5 A, 60 Hz, 61 Hz, 0.53 kW, 0.66 kW, 1.20 kW

Note: The 120/240 AC screen is disabled by default. To enable it, navigate through the menu: Menu > 120/240 Setup > Enable.

Installation Steps

1. Choose the meter mounting style and location.
2. Turn off AC power before proceeding.
3. Prepare the mounting hole using the provided cutout templates.
4. Refer to the wiring diagram:
   • Install the provided 150A/50mA Current Transformer.
   • Make all connections to the meter's connector.
   • Do not insert fuses into fuse holders at this time.
5. Plug the wired terminal block into the meter.
6. Insert fuses into the fuse holders, ensuring the fuse for Pin 2 (DC Supply) is inserted last.
7. Turn on AC power.

Basic Meter Setup

1. If using the included 150A/50mA Current Transformer, no additional setup is required.
2. If monitoring only one AC Line, you may disable the unused inputs to prevent them from being displayed.
3. For information regarding advanced setup options, consult the full instructions available on the Blue Sea Systems website.

Mounting Options and Templates

The M2 OLED Digital Monitor can be mounted using either a flat mount or a surface mount configuration.

Flat Mount:

This method involves flush mounting the unit into a panel. The required cutout is approximately 3.03 inches (77mm) square. Components involved include the M2 Head Unit, Flat Mount Bezel, Clamp, Mounting Ring, and Nut.

Surface Mount:

This method involves mounting the unit onto a surface. The required cutout is a circular hole with a diameter of approximately 2.125 inches (54mm). Components involved include the M2 Head Unit, Surface Mount Bezel and Seal, Gasket, Cover, Mounting Ring, and Nut. A gasket and seal are used to ensure protection from the environment.

Mounting Dimensions:

• Flat Mount: 3.34" (84.8mm) height x 3.03" (77mm) width.
• Surface Mount: 3.46" (87.9mm) height x 3.40" (86.5mm) width.

Warnings and Warranty

WARNING: The WARNING symbol indicates potential injury to the user or significant damage to the monitor if procedures are not followed.

CAUTION: The CAUTION symbol highlights restrictions and rules to prevent damage.

Installation Advisory: If you lack knowledge of electrical systems, it is recommended to have a qualified electrical professional install this unit. The diagrams provided are for the installation of the unit itself and not for the overall vessel wiring. Always verify that no other DC or AC sources are connected to the vessel's wiring before installation.

CAUTION: The back of the unit is not waterproof. Avoid installation where the back of the monitor may be exposed to water.

Warranty: Blue Sea Systems offers a 5-year manufacturer's warranty on the M2 OLED Digital Meters. This warranty covers defects in materials or workmanship for five years from the date of purchase. The warranty is limited to the cost of repair or replacement of the M2 Meter product. Labor and shipping costs for defective parts are not covered. Blue Sea Systems is not liable for damages resulting from misuse of the M2 Meter.