Victron Cyrix-Li-Load 24/48v-120a
The Cyrix-Li-Load 24/48v-120a battery coupler from victron Energy (mpn cyr020120450) for 12v and 24v LiFePO4 batteries. It can work with a maximum current of 120a and is, among other things, an ideal complement to the vE.Bus bms as a battery switch for those loads that the vE.Bus bms cannot switch independently.
Function of the Cyrix battery couplers in general
The victron Cyrix-Li-Load 24/48v-120a is a high performance microprocessor controlled relay that automatically connects batteries in parallel when one of them has reached a predetermined voltage value (indicating that the battery is charging) and, disconnects the batteries again when the voltage drops below the float voltage value (indicating that one or both batteries are being discharged). Cyrix battery couplers are excellent for replacing isolation diodes. Their main feature is that there is virtually no voltage loss, so there is no need to increase the output voltage of the alternators or battery chargers.
Mode of operation of the Cyrix-Li-Load 12/24v 120a
The Cyrix-Li-Load 24/48v 120a shuts down when its control input reaches the "free floating " (open circuit) state. When the battery voltage recovers after shutdown (this happens when no other loads are connected to the battery), the output of the bms goes high and the Cyrix turns back on after 30 seconds. After 3 power-on attempts, the Cyrix will remain off until the voltage has risen above 13 v (or 26 v or 52 v) for at least 30 seconds (this is an indication that the battery is recharging).
important technical features
- Manufacturer part number: cyr020120450
- Continuous current and cut-off current: 120a
- for 24v and 48v battery voltage
Cyrix-Li-Load as a perfect complement to the vE.Bus bms
A key piece of protection for victron LiFePO4 batteries is the vE.Bus bms. However, not all loads or chargers can be controlled directly via the vE.Bus bms. To switch off such loads or chargers, several vE.Bus bms controllable Cyrix switches are available.
Scope of delivery:
1x victron Energy cyr020120450 victron Cyrix-Li-Load 24/48v-120a Battery Coupler 1x user manual