230A 12V-24V Cyrix-CT intelligent battery combiner - Victron Energy

Description

Intelligent battery control to prevent unwanted switching.

Some battery combiners (also called Voltage Controlled Relays, or Auxiliary Charge Relays) will disconnect a battery if the charge presents too high an amperage, albeit briefly. A battery combiner may also fail to connect a large discharged battery bank, because as soon as the batteries are connected, the DC voltage immediately drops below the de-activation value.
The software of the Cyrix-ct 12/24 does much more than simply connect and disconnect based on battery voltage and a fixed delay time. The Cyrix-ct 12/24 also takes into account the general trend (increase and decrease in voltage) and only reverses a previous action if the trend has reversed for a certain period of time. The delay time depends on the voltage deviation from the trend (for battery combiners with multiple activation/deactivation profiles, see the Cyrix-i 400).

Long bolts for connecting more than one power cable

Cyrix 12/24-120: 13 mm (M6) Cyrix 12/24-230: 16 mm (M8)

Overheat protection (due to prolonged overload, for example)

The Cyrix will disconnect in case of excessive contact temperature, and will reconnect after cooling down.

LED status indication (Cyrix 12/24 230 only)

• LED on: engaged
• LED stays on 10 s: disengaged
• LED stays on 2 s: connecting
• LED flashes 2 s: disconnecting
• LED flashes 0.25 s: alarm (overheat; voltage > 16 V; both batteries < 10 V; one battery < 2 V) (multiply by two for 24 V)

12/24 V auto sensing

The Cyrix-ct 12/24 automatically detects the system voltage.

No voltage drop

Cyrix battery combiners are an excellent replacement for diode splitters. Their main feature is that they have virtually no voltage drop, thus eliminating the need to correct alternator or battery charger output voltages.

Priority to the starter battery

In a typical installation, the alternator is directly connected to the starter battery. The service battery and possibly a bow thruster and other batteries are all connected to the starter battery via Cyrix battery combiners. When a Cyrix detects that the starter battery has reached its engagement voltage, it closes to allow parallel charging of the other batteries.

Bidirectional voltage sensing and power supply from both batteries

The Cyrix monitors the voltage of both connected batteries. Therefore, it will also engage when, for example, the service battery is charged by a battery charger.
The Cyrix-ct 12/24 has a dual power supply. It will also close if the voltage on one of the batteries is too low to operate the Cyrix.
In order to avoid unwanted operation during installation or if a battery has been disconnected, the Cyrix-ct 12/24 will not close if the voltage on either battery connection is below 2 V (12 V battery) or 4 V (24 V battery).

Emergency parallel connection (StartAssist)

The Cyrix can also be engaged with a push button (the Cyrix remains engaged for 30 s) or with a switch to manually connect the batteries in parallel.
This can be very useful in an emergency when the starter battery is discharged or damaged.