Read the owners manual carefully before installing the BBM1224i!
Features
Automatic 12 V / 14 V detection
Simple installation
Purpose
The BBM1224i has to functions:
1.
To ensure that the connected devices is always supplied with sufficient current and voltage.
2.
To ensure that the battery is not discharged too much.
Wiring diagram
Installation
1.
Connect the plus (+) of the load to the OUT+ of the BBM1224i.
2.
Connect the minus (-) of the load to a minus (-) of the BBM1224i.
3.
Connect the plus (+) of the battery to the BAT+ of the BBM1224i.
4.
Connect the minus (-) of the battery to a minus (-) of the BBM1224i.
5.
Connect the plus (+) of the power supply to the PS+ of the BBM1224i.
6.
Connect the minus (-) of the power supply to a minus (-) of the BBM1224i.
Warnings:
The product should only be connected by skilled fitters/mechanics who are aware of the regulations for working with high battery voltages.
The use of poor quality connection materials and/or excessively thin cables may result in damage to the product.
A short circuit between the positive and negative terminals of the battery may cause severe damage to your system.
Do not locate the product close to combustible and highly flammable materials.
Always use fuses.
Operation
New from the box the relay will connect the battery to the load. Once the BBM1224i is connected to the power supply, the relay will switch on whereby the
power is connected to the load and the battery. The moment the power supply no longer delivers energy to the product – because it is, for example,
disconnected or broken – the load will immediately receive its power from the battery. In order to make an as efficient as possible system, after 100 ms the
relay will switch over so that current no longer passes through the internal diodes but via the relay to the load.
If the power supply is then connected to the product once more, the relay will again switch on after 3 seconds in order to supply the load with power from the
power supply and to also charge the battery again.
Charging current setting
If the blade fuse – which is visible on the rear of the housing – is removed, the maximum charging current for a 12 V system is 2 A and for a 24 V system is 4
A.
Note!
It is important that the connected power supply can deliver at least as much power as the connected load requires. If a weaker power supply is connected, the
relay will constantly switch on and off.
Technical details
12V system
24V system
Input voltage
13.8 V
27.6 V
Maximum input current (PS)
35 A
Current to load (Out)
to 31 A
to 27 A
Current to battery (Bat)
to 4 A
to 8 A
Current consumption (without load)
140 mA @ 13.8V
74 mA @ 27.6 V
Voltage loss from power supply (PS) or battery (Bat) to load (Out)
±50 mV @ 20 A
No power failure when switching from the power supply (PS) to the battery (Bat), and vice versa.
Owners Manual BBM1224i EN_DU_FR_NL 140710
