Cyrix-Li-charge 24/48V-120A intelligent charge relay

The Cyrix Battery Combiner is a microprocessor controlled heavy duty relay that automatically connects batteries in parallel when one of them has reached a pre-set voltage (indicating that the battery is being charged), and disconnects when the voltage decreases below float level (indicating that one or more batteries are being discharged). Cyrix Battery Combiners are an excellent replacement for diode isolators. The main feature is that there is virtually no voltage loss so that the output voltage of alternators or battery chargers does not need to be increased.

The Cyrix-Li-Charge will connect a battery charger with 3 seconds delay:

• if the charge disconnect output of the VE.Bus BMS is high
• if it senses 13,0 V (resp. 26,0 V or 52,0 V) or more on its battery charger connection terminal
• if it senses 2 V or more on its battery terminal. (the Cyrix will remain open if not connect to the battery).

The Cyrix-Li-Charge will disengage immediately whenever its control input becomes free floating, signalling cell over voltage or cell over temperature.

In general, a cell over voltage alarm will reset shortly after charging has been stopped. The Cyrix will then reconnect the charger after a delay of 3 seconds.

When the Cyrix-Li-Charge is engaged (charger connected to battery) it will disengage after 1 hour to check if the charger is still enabled. If, after the Cyrix has disengaged, the output of the battery charger immediately increases to 13,0 V or more, the Cyrix will re-engage with a 3 second delay.

Note: In case of zero discharge current or a small discharge current, the Cyrix will not disengage shortly after the charger has been switched off and/or disconnected because battery voltage will remain higher than 13,5 V.