AERL LiFe²

1.1Safety

Follow the safety requirements in the LiFe² 5120S Installation and Operation Manual when installing, commissioning, operating and maintaining the product. Not following them can damage the product and other property, or cause injury or death. Tighten screws and fasteners to the torque given in the manual, with the correct tools. Read the manual in full before installation.

Important information

• Installers and users must familiarise themselves with the manual.
• Power cables and plugs can carry high current from the battery: take care when wiring.
• Have a fire extinguisher available before installation and use.
• Installation and commissioning must be performed by qualified personnel.
• Install the battery system in a suitable location (see the manual, §5.1).
• A battery module weighs 44 kg: install it with at least two people, using lifting aids if necessary.

1.2Box Contents

#	Part	Qty
1	Termination Plug	1
2	Comms Cable	1
3	M6 × 16 Bolt	4

1.3AERL LiFe² Cabinets

1.4Tools

• Utility Knife
• Insulated Gloves
• Goggles
• Drill

1.5Interface & Status LEDs

The front-panel LEDs show the battery state (Status, Error and SOC).

• If SOC is below 5%, the first LED flashes quickly (0.5 s on, 0.5 s off: 1 Hz).
• While discharging, the last lit LED flashes (1 s on, 1 s off: 0.5 Hz).
• While charging, the last lit LED flashes slowly (2 s on, 2 s off: 0.25 Hz).

2.1Minimum Clearance Requirements

• ≥ 650 mm in front of the front door (service access)
• ≥ 100 mm between adjacent cabinets
• ≥ 500 mm at the end of the row

2.2Connecting the Power Cables & Deploying the Support Feet

Power Lug Torque: 15 N·m

Lower the support feet until the wheels are off the floor before you insert any batteries.

2.3Inserting and Fastening the Modules

Slide the modules into the cabinet from the bottom up, and fasten each one.

Module Bolt Torque: 3 N·m

2.4Connecting the Comms & the Protective Earth

• COMM on the master battery: to the inverter.
• OUT on each module: to IN on the next module.

Insert the termination plug into the OUT port of the last battery in the chain.

Connect the PE to each battery module.

PE Torque: 3 N·m

2.5Connecting Parallel Cabinets

Insert the termination plug into the OUT port of the last module.

3.1Connecting to the Inverter

Connect the DC power cables and the comms cable between the master battery and the inverter.

Important note

The comms cable must be Cat 5 or higher.

Cable legend:

• DC+ cable (red)
• DC− cable (black)
• Comms cable (Cat 5 or higher) (blue)

• PE cable (green/yellow)
• DC breaker between the battery and the inverter: 2-pole, on both conductors (AS/NZS 5139)

3.2Managed and Self-Managed Mode

The LiFe² 5120S starts in Managed (communication) mode by default.

Use Self-Managed mode when the inverter has no communication link to the battery (a no-comms or Self-Managed PCE). To switch to Self-Managed (No Comms) mode: with the battery on, double-press the ON/OFF button on the master battery. The SOC LEDs flash 3 times to confirm. The battery remembers the mode after a restart, so you set it once.

The battery switches back to Managed mode automatically when the communication cable between the inverter and the master battery is connected.

3.3Master Comms Port Pin-Out

PIN No.	1	2	3	4	5	6	7	8
Definition	NC	NC	NC	CAN_H	CAN_L	NC	RS485B	RS485A

3.4Connecting Parallel Cabinets to the Inverter

Cable legend:

• DC+ Cable (red)
• DC− Cable (black)
• COM Cable (blue)
• PE Cable (green/yellow)

Note

1. A maximum of 64 AERL LiFe² modules can be connected in parallel.
2. Combine the DC power cables of parallel cabinets in a combiner box with a suitably rated DC bus.
3. Use DC power cables of approximately equal length for all cabinets.
4. The comms cable between the master battery and the inverter must be no longer than 5 m.

3.5Starting up or Shutting Down the Battery System