victron energy Cyrix-i 12-24-400 Intelligent Battery Combiner User Manual

victron energy Cyrix-i 12-24-400 Intelligent Battery Combiner

• No voltage loss
  The Cyrix-i 400 battery combiner is a microprocessor controlled heavy duty contactor that automatically connects batteries in parallel when one battery 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 both batteries are being discharged). Cyrix battery combiners are an excellent replacement for diode isolators. The main advantage is that there is virtually no voltage loss so that the output voltage of alternators or battery chargers does not need to be increased.

• Prioritizing the starter battery
  In a typical setup the alternator is directly connected to the starter battery. The accessory battery, and possibly also a bow thruster and other batteries, are each connected to the starter battery by Cyrix battery combiners. When a Cyrix senses that the starter battery has reached it’s connect voltage it will engage, to allow for parallel charging of the other batteries.

• Bidirectional voltage sensing
  The Cyrix senses the voltage of both connected batteries. It will therefore also engage if for example the accessory battery is being charged by a battery charger.

• Intelligent battery monitoring
  Four different connect/disconnect profiles can be selected to suit local requirements.

• 12/24Volt and 24/48Volt auto ranging

  • The Cyrix-i 12/24 will automatically adjust to a 12V or 24V system.
  • The Cyrix-i 24/48 will automatically adjust to a 24V or 48V system.

• Bicolour LED status indicator

  • Red: contactor open
  • Red/green: timer
  • Green: contactor closed

Micro switch for remote switch status monitoring

Installation (see figure below)

1. The Cyrix can only be used in installations with a negative common.

2. Disconnect the minus of both batteries.

3. Place the Cyrix closest to the smallest battery (in general the starter battery).

4. Connect the plus of the batteries to the brass bolts of the Cyrix,
   (battery 1 and battery 2). Install a fuse in series (see fig). The fuse should be sized in accordance with the wire cross section used, but not exceed 400A.

5. Connect the common battery negative to “battery –“ of the Cyrix and reconnect the minus of both batteries.

6. An emergency start push button can be wired to the “start assist” connection if required. The relay will engage during 30 seconds after the “start assist” has been momentarily connected to the battery plus. Alternatively, a parallel connect switch can be used to engage the relay as long as the switch remains closed.

7. An auxiliary micro switch is available for remote monitoring.

18-72VDC

Connect/disconnect profiles| See table
Over voltage disconnect| 16V / 32 / 64V
Current consumption when open| 4mA
Emergency start| Yes, 30 sec
Micro switch for remote monitoring| Yes
Status indication| Bicolour LED

Four different connect/disconnect profiles

Profile 0 (default)

Connect (V)|  | Disconnect (V)
Less than 13V| Remains open|  | More than 12.8V| Remains closed
 | Closes after|  |  | Opens after
13V| 10 min|  | 12.8V| 10 min
13.2V| 5 min|  | 12.4V| 5 min
13.4V| 3 min|  | 12.2V| 1 min
13.6V| 1 min|  | 12V| 20 sec
13.8V| 4 sec|  | Less than 11V| Immediate
Profile 1

Connect (V)|  | Disconnect (V)
Less than 13.25V| Remains open|  | More than 12.75V| Remains closed
More than 13.25V| Closes after 30 sec|  | From 10.5V to 12.75V| Opens after 2 min
 |  |  | Less than 10.5V| Immediate
Profile 2

Connect (V)|  | Disconnect (V)
Less than 13.2V| Remains open|  | More than 12.8V| Remains closed
More than 13.2V| Closes after 6 sec|  | From 10.5V to 12.8V| Opens after 30 sec
 |  |  | Less than 10.5V| Immediate
Profile 3

Connect (V)|  | Disconnect (V)
Less than 13V| Remains open|  | More than 12.8V| Remains closed
 | Closes after|  |  | Opens after
13V| 10 min|  | 12.8V| 30 min
13.2V| 5 min|  | 12.4V| 12 min
13.4V| 3 min|  | 12.2V| 2 min
13.6V| 1 min|  | 12V| 1 min
 |  | 11.8V| 10 sec
13.8V| 4 sec|  | Less than 10.5V| Immediate

Notes

1. After connecting 3 times, the minimum time to reconnect is 1 minute (to prevent ‘rattling’)
2. The Cyrix will not connect if the voltage on one of the battery connections is less than 2V*. (to prevent unexpected switching during installation)
3. The Cyrix will always connect if the start assist is activated, as long as the voltage on one of the battery connections is sufficient to operate the Cyrix (approximately 10V*).

• Multiply voltage x2 for 24V systems and x4 for 48V systems

Victron Energy BV / De Paal 35 / 1351 JG ALMERE / The Netherlands www.victronenergy.com / e-mail: sales@victronenergy.com

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