Battery Saver - Installation

The Battery Saver protects the C06 when it is powered by an external battery or external power supply.
The C06 does not have its own internal battery. In some installations, power is supplied by an external battery. When that voltage becomes too low, the gateway may continue using power even though the battery no longer has enough charge to support normal operation.
The Battery Saver helps prevent this by monitoring the external battery voltage. Depending on the configured voltage levels, it can place the C06 in sleep mode or switch it off completely.
When the external battery voltage rises again, normal operation can resume.

What is included

The Battery Saver is the black module shown in the image.
It is delivered with two cables:

• A power cable with a 2-pin connector on both ends. One connector is black and the other connector is green.

• A Modbus cable with a 3-pin connector on both ends.

Both cables are required.

• The power cable supplies power to the Battery Saver and allows it to control the power supply to the C06.

• The Modbus cable allows communication between the C06 and the Battery Saver. In this setup, the C06 is always the Modbus master and the Battery Saver is always the Modbus slave.

Without this Modbus connection, sleep and wake-up behaviour cannot be managed correctly.

Check the internal settings first

Before connecting the Battery Saver to the C06, check whether the internal DIP switch settings are correct for the installation.
In most installations, the default settings can be used. If a setting must be changed, do this before connecting any cables. The Battery Saver has to be opened from the bottom to access the DIP switches.
Only change these settings when instructed to do so, or when the installation requires it.

Internal DIP switch settings

The DIP switches define hardware-level settings for the Battery Saver.
They control:

• the expected battery voltage;

• the Modbus baudrate;

• the RS485/Modbus termination resistor.

Check these settings before continuing with the power and Modbus connections.

Battery voltage selection

DIP switch 1 sets the expected battery voltage.
The default setting is 12 V.

This setting must match the voltage of the installation.

• If the Battery Saver is set to 12 V but 24 V is connected, the red LED keeps blinking. The Battery Saver does not continue normal operation.

• If the Battery Saver is set to 24 V but 12 V is connected, the Battery Saver does not start. As a result, the C06 does not start either.

Modbus baudrate

DIP switches 2 and 3 set the Modbus baudrate.
The default setting is 9600 bps.

This setting must match the baudrate of the C06, as specified in the Modbus settings.
If the baudrate is incorrect, the C06 and the Battery Saver will be unable to communicate.

Modbus termination

DIP switch 4 controls the 120 ohm Modbus termination resistor.
The default setting is OFF.

This setting has the same function as the terminator on the C06.
Only enable or disable termination when you know how the RS-485/Modbus bus is wired.

Safety checks before wiring

• Before connecting or disconnecting any cables, make sure the C06 is powered off.

• Place the Battery Saver close enough to the C06 so both supplied cables can be connected safely.

• Check where the power input and RS-485/Modbus input are located on the C06 before changing the wiring.

• If a power cable or RS-485/Modbus cable is already connected to the C06, do not remove it permanently. These existing connections must be moved to the Battery Saver, as described in the steps below.

• Make sure each connector is inserted correctly and firmly. A loose connector can prevent the C06 from starting, switching off or waking up correctly.

Connect the power cable

Use the 2-pin power cable to connect the Battery Saver to the C06 power input.

Connect the black 2-pin connector to the black power output on the Battery Saver.
If a power cable is already connected to the C06, disconnect that cable from the C06 and connect it to the Battery Saver instead. Use the connection marked POWER IN.

Connect the green 2-pin connector to the power input on top of the C06.
The Battery Saver is now placed between the external power supply and the C06.
This means that the Battery Saver receives power first. The Battery Saver then controls whether power is passed on to the C06.

Connect the Modbus cable

Use the 3-pin Modbus cable to connect the Battery Saver to the C06.

Connect one end of the 3-pin cable to one of the Modbus connections on the Battery Saver.
Connect the other end of the cable to the RS-485/Modbus connection on the C06.

It does not matter which Modbus connection is used on the Battery Saver. Both Modbus connections can be used.
If a cable is already connected to the RS-485/Modbus connection on the C06, disconnect it from the C06 and connect it to the free Modbus connection on the Battery Saver.

The Modbus connection is required. It allows the C06 to communicate with the Battery Saver and manage switch-off and wake-up behaviour.
In this communication, the C06 is always the Modbus master. The Battery Saver is always the Modbus slave. This means the C06 initiates the communication, while the Battery Saver responds.
Without the Modbus connection, the C06 may still receive power, but switch-off and wake-up behaviour cannot be managed correctly.

Simplified connection diagram

The simplified connection diagram shows how the Battery Saver must be placed between the external power supply and the C06.
The power connection runs through the Battery Saver before it reaches the C06.
The Modbus connection links the Battery Saver to the RS-485/Modbus connection on the C06. This connection is required for correct communication between both devices.

Check the Battery Saver LED

The Battery Saver has an LED on the side of the power input and power output connections.

When the module starts, the LED lights up orange.

After startup, the LED indicates the current status. It shows whether power is being passed on to the C06, whether Modbus communication is detected and whether the configured voltage setting matches the connected external power supply.

Battery Saver LED explained

• Orange (solid):
  Power is being passed on to the C06, but Modbus communication with the C06 is not detected.

• Orange (blinking):
  Power to the C06 will be switched off in 10 seconds.

• Orange/red (blinking):
  Power to the C06 will be switched off in 30 seconds.

• Green (solid):
  Power is being passed on to the C06 and Modbus communication with the C06 is detected.

• Green (blinking):
  Power to the C06 will be switched on in 10 seconds.

• Red (blinking):
  The Battery Saver is set to 12 V, but 24 V power is detected. Power to the C06 is switched off.

If the LED keeps blinking red, check whether the Battery Saver voltage selection matches the connected external power supply.