LOOM CAML 20051 WM-LV Lithium Battery Operation Manual

01 Technical Data

Performance

General Specifications

Note: Operating current derating according to cell voltage and battery temperature.

Standard Compliance Notes:

• Test conditions: 100% depth of discharge (DoD), 0.2C rate charge & discharge at 25°C.
• Charge/discharge derating occurs when the operating temperature is between -10°C to 5°C and 45°C to 55°C.
• Conditions apply. Refer to W15-5A Warranty Letter.

02 Product Overview

Brief Introduction

The CAML 20051 WM-LV is a lithium battery with an operating voltage range between 44.8V to 57.6V. It is designed for residential energy storage applications and works in conjunction with a 51V battery hybrid inverter. This model is not suitable for supporting life-sustaining medical devices.

The CAML 20051 WM-LV features a built-in Battery Management System (BMS) that manages and monitors cell information, including voltage, current, and temperature. The BMS also balances cell charging to extend cycle life and provides protection functions against over-discharge, over-charge, over-current, and high/low temperatures. The system automatically manages charge state, discharge state, and balance state.

Multiple CAML 20051 WM-LV units can be connected in parallel to expand capacity and power, supporting up to 15 units in parallel.

Interface Introduction

The unit features an air switch and a circular weak current switch for power control. LED indicators display battery status and State of Charge (SOC).

Switch ON/OFF Procedure

To Turn ON: Activate the air switch, then press the circular weak current switch for more than 3 seconds. The LED indicators will flash, and the battery will operate normally. LEDs L1 to L6 display the battery SOC, while L7/L8 indicate the battery status.

For multiple units in parallel, press the ON/OFF button on the MASTER battery for more than 3 seconds. The LED will flash, and the battery system will automatically encode and assign IDs to each slave battery.

To Turn OFF: Press the circular weak current switch of the master pack for more than 3 seconds and release. When all slave packs are closed, the master pack will enter sleep mode. For a single CAML 20051, turn off the circular weak current switch. For multiple units in parallel, turn off the master battery's switch first, then turn off all subordinate batteries' switches.

LED Indicator Definition

Note on LED Flashing Patterns:

• Flash 1: 0.25s light / 3.75s off
• Flash 2: 0.5s light / 0.5s off
• Flash 3: 0.5s light / 1.5s off

LED Indicators Instructions: The LED indicators provide status information. Detailed tables outline specific patterns for RUN, ALM, L8-L1 status, discharging battery levels (0-17% to 84-100%), and charging battery levels (0-17% to Full Charged), indicating SOC and operational status.

CAN / RS485 Port

The unit is equipped with an RJ45 communication terminal for CAN / RS485 communication with an inverter, following the CAN / RS485 protocol.

PIN Definitions:

• Pin 1: RS485-B (to PCS, reserved)
• Pin 2: RS485-A (to PCS, reserved)
• Pin 3: GND
• Pin 4: CANH (to PCS)
• Pin 5: CANL (to PCS)
• Pin 6: RS232_RX
• Pin 7: RS232_GND
• Pin 8: RS232_TX

03 Installation Guide

Installation Flow Chart

The installation process follows these steps: Start ➡️ Check Before Installation ➡️ Prepare Installation Tools ➡️ Determine Installation Position ➡️ Install Wall Bracket ➡️ Install Battery ➡️ Electrical Connection ➡️ END.

✔️ Checking Before Installation

Checking Outer Packing Materials

Packing materials and components may be damaged during transportation. Inspect the outer packing materials for damage, such as holes and cracks, before installing the battery. If any damage is found, do not unpack the battery and contact the dealer immediately. It is advised to remove packing materials within 24 hours before installation.

Checking Deliverables

After unpacking, verify that all deliverables are intact and complete. If any damage is found or any component is missing, contact the dealer.

Included Components and Mechanical Parts:

• Battery box (1)
• Wall mounting bracket (2)
• Lock Wall Pendant (8)
• Crossed external hexagonal triple combination screws (4)
• Power line (2)
• Positioning sticker (1)
• RJ45 Crystal head (4)
• Communication network cable (2)
• Yellow-green two-color grounding cable (1)
• User manual (1)

?️ Tools Required

Installation Tools: Knife, Measuring tape, Socket wrench (10/16mm), Rubber mallet, Cross Screwdriver, Hammer drill (12mm).

Protection Tools: ESD gloves, Safety goggles, Anti-dust respirator, Safety shoes.

⚙️ Installation Requirements

Installation Environment Requirements

• Install the battery in an indoor environment.
• Place the battery in a secure location away from children and animals.
• Do not place the battery near heat sources or sparks.
• Avoid exposing the battery to moisture or liquids.
• Do not expose the battery to direct sunlight.
• The unit is suitable for short-term use in a Marine environment.

Installation Carrier Requirements

• Mount the battery only on fire-resistant buildings; do not install on flammable buildings.
• Ensure the wall or ground can meet the battery's significant weight load bearing requirements.

➡️ Installation Instructions

? Dimensions

The unit dimensions are 800mm (height) x 500mm (width) x 227mm (depth). Minimum mounting distances of 150mm are required around the battery pack and equipment for proper ventilation and access.

Installation Procedure

• STEP 1: Drill holes using a 12mm drill bit and fix the wall bracket to the wall. The bracket requires specific hole placements as indicated by dimensions (e.g., 470mm, 406.4mm, 203.2mm).
• STEP 2: Secure the mounting bracket (upper and lower parts).
• STEP 3: Hang the CAML 20051 WM-LV battery onto the wall mounting bracket and secure it tightly using fastening screws.
• STEP 4: Connect the grounding cable to the PE terminal.
• STEP 5: Connect the power cables to the inverter (to Inverter B+ and B-).
• STEP 6: Connect the communication cables (Link in, CAN, Link Out) to the inverter's CAN port.
• STEP 7: Follow specific wiring methods based on the number of units and inverter power.

Wiring Methods for Parallel Operation

General Notes: Load power exceeding 14kW requires at least 2 units in parallel operation. The maximum number of parallel units is 15. The inverter's power must be less than the battery module's maximum output power.

• Connection Mode 7.1: For 1 unit, with load power below 14kW.
• Connection Mode 7.2: For 2-15 units, with load power below 14kW. (Diagram shows in-layer modules; middle units omitted for clarity. Ensure equal length for positive and negative connecting lines.)
• Connection Mode 7.3: For 2-15 units, with load power over 14kW (when using an inverter of 10kW or above). (Diagram shows connection to a combiner cabinet; middle units omitted for clarity. Ensure equal length for positive and negative connecting lines.)

Important Warnings:

• ⚠️ Ensure power cables are installed with correct polarity to avoid dangerous situations.
• ⚠️ Do not create a short circuit between the battery's positive and negative terminals.
• ❗ Incorrect communication cable connections can lead to system malfunctions or failure.

04 Commissioning Procedure

After all cable (power and communication) connections are completed, ensure the following:

• The DC switch on the inverter is OFF.
• The AC switch connected to the grid and EPS output (if used) of the inverter is OFF.
• The battery's DC switch is OFF.

Recommended commissioning steps:

1. Turn the battery's DC switch ON.
2. Refer to section 2.2.1 for turning on the battery.
3. Wait for the battery LED indicators to turn on.
4. Wait for the inverter LED indicators to turn on.
5. Turn on the DC switch on the inverter.
6. Set up the battery and inverter using the dedicated App.
7. Turn on the AC switch connected to the grid and EPS output of the inverter.

05 Maintenance

5.1 Recharge Requirements During Normal Storage

Batteries should be stored in an environment with temperatures between -10°C and +45°C. Regular maintenance is required, including recharging to 40% SOC with a 0.5C (25A) current after long storage periods.

Recharge Conditions When In Storage

5.2 Recharge Requirements When Over Discharged

Batteries that have been over-discharged (90% DOD) must be recharged according to the following table to prevent damage.

Recharge Conditions When Battery is Over Discharged