1. はじめに
The Victron Cyrix-ct 12/24V 120 Amp Battery Combiner is an intelligent, microprocessor-controlled relay designed to automatically connect batteries in parallel when one battery reaches a preset charging voltage. This allows for efficient charging of multiple batteries from a single source. When the voltage drops below a specified level, indicating no active charging, the Cyrix-ct automatically disconnects the batteries, preventing discharge of the starter battery by the auxiliary battery. This device is an effective alternative to diode isolators, which can cause voltage loss during charging. The Cyrix-ct features internal temperature monitoring and voltage spike suppression for enhanced reliability and safety.
2. 主な特徴
- マイクロプロセッサ制御: Ensures precise and reliable operation.
- Automatic Battery Connection: Connects batteries in parallel for charging when a charging voltageが検出されました。
- インテリジェントバッテリーモニタリング: Prevents repeated switching by monitoring battery status.
- 自動巻tage 調整: Compatible with both 12V and 24V systems without manual configuration.
- 高電流定格: Supports a maximum continuous current of 120 Amps.
- Emergency Parallel Connection: Remote switch activation for emergency parallel connection (e.g., for starting with auxiliary battery).
- Internal Temperature Monitoring: Protects the device from overheating.
- 巻tage Spike Suppression: Enhances durability and protects connected systems.

図2.1:以上view of Victron Cyrix-ct key features. This image highlights the microprocessor control, maximum charge current, support for two batteries, and ease of installation.
3. 安全情報
Please read all safety instructions before installing or operating the Cyrix-ct Battery Combiner. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always disconnect power from the battery system before installation or maintenance.
- Wear appropriate personal protective equipment, including eye protection and insulated gloves.
- 短絡を防止するために、すべての配線接続が安全かつ適切に絶縁されていることを確認してください。
- Install the device in a well-ventilated area, away from flammable materials.
- デバイスを水や過度の湿気にさらさないでください。
- This device is designed for 12V or 24V DC systems only. Do not connect to AC power.
- Consult a qualified professional if you are unsure about any part of the installation or operation.
4. セットアップとインストール
The Cyrix-ct Battery Combiner is designed for straightforward installation. Follow the steps below and refer to the wiring diagram for proper connection.
- 取り付け: Choose a dry, protected location for mounting the Cyrix-ct. Ensure it is easily accessible for wiring.
- 配線:
- Connect the positive terminal of Battery 1 (typically the starter battery) to the "Battery 1 +" terminal on the Cyrix-ct.
- Connect the positive terminal of Battery 2 (typically the auxiliary/house battery) to the "Battery 2 +" terminal on the Cyrix-ct.
- Connect the negative terminals of both batteries to a common ground point. The Cyrix-ct does not require a direct negative connection.
- For optional remote control or emergency start assist, connect a switch between terminal 85 (Start Assist) and a positive source, and terminal 86 to ground. Refer to the diagram for details.
- 融合: Install appropriate fuses in line with the positive battery cables as close to the batteries as possible. The fuse rating should be suitable for the cable size and the maximum current of the Cyrix-ct (120A).
- 検証: 電源を入れる前に、すべての接続が正しくしっかりと締まっているか再確認してください。

Figure 4.1: Wiring diagram for the Victron Cyrix-ct. This diagram illustrates how to connect the Cyrix-ct between a starter battery and a domestic battery, including connections to the alternator and an optional start assist switch.

Figure 4.2: Physical dimensions of the Victron Cyrix-ct. The unit measures 80mm (3.2 inches) in length and 46mm (1.8 inches) in width, indicating a compact design.
5. 操作手順
The Cyrix-ct operates automatically to manage the charging of your battery banks. There are no user-adjustable settings required for its primary function.
- 自動接続: ボリュームがtage on one of the connected batteries rises above a specific threshold (e.g., 13.0V for 12V systems, 26.0V for 24V systems) for a sustained period, the Cyrix-ct will engage, connecting the two battery banks in parallel. This allows the charging source (alternator, shore power charger, solar charger) to charge both batteries simultaneously.
- Automatic Disconnection: ボリュームがtage on both batteries drops below a specific threshold (e.g., 12.8V for 12V systems, 25.6V for 24V systems) for a sustained period, the Cyrix-ct will disengage, separating the battery banks. This prevents the auxiliary battery from discharging the starter battery when no charging source is active.
- Start Assist (Optional): If connected, activating the remote switch will force the Cyrix-ct to connect the batteries in parallel for a short period, allowing the auxiliary battery to assist in starting the engine if the starter battery is low.

Figure 5.1: Parallel charging logic of the Victron Cyrix-ct. This image explains that the Cyrix-ct prioritizes the starter battery and engages to allow parallel charging of other batteries once the starter battery reaches a sufficient voltage.
6. 仕様
| 特徴 | 仕様 |
|---|---|
| モデル番号 | NT-1231 |
| ブランド | ビクトロンエナジー |
| 営業巻tage | 12V or 24V DC (auto-sensing) |
| 最大連続電流 | 120 Amps |
| Crank Rating (5 seconds) | 180 Amps |
| 連絡先の種類 | 通常オープン |
| 連絡先 | 銅 |
| 動作モード | 自動 |
| アイテム重量 | 110グラム |
| 寸法(約) | 80mm×46mm(3.2インチ×1.8インチ) |
| UPC / GTIN | 616913923864、619639706902、08719076022145、08719076034339 |
7. メンテナンス
The Victron Cyrix-ct Battery Combiner is designed to be maintenance-free. However, periodic checks can help ensure optimal performance and longevity.
- 接続を検査する: すべての配線接続部を定期的に点検し、清潔でしっかりと締め付けられ、腐食がないことを確認してください。接続が緩んでいると、性能低下や過熱につながる可能性があります。
- クリーンユニット: Keep the unit clean and free from dust or debris. Use a dry cloth for cleaning. Do not use solvents or abrasive cleaners.
- 環境チェック: 設置環境が乾燥しており、指定された動作温度範囲内であることを確認してください。
8。 トラブルシューティング
If you experience issues with your Cyrix-ct Battery Combiner, consider the following common troubleshooting steps:
- Batteries Not Combining:
- Check if the charging source is active and providing sufficient voltage to at least one battery (above the connect threshold).
- Verify all wiring connections are secure and correct, especially the positive connections to both batteries.
- Inspect fuses in the battery lines. A blown fuse will prevent current flow.
- Batteries Not Disconnecting:
- Ensure no charging source is active and the voltage on both batteries has dropped below the disconnect threshold.
- Check for any parasitic loads that might be keeping one battery voltage artificially high.
- 過熱:
- Ensure the unit is installed in a well-ventilated area and not exposed to direct sunlight or excessive heat.
- Verify that the current draw does not exceed the maximum continuous rating of 120 Amps.
If the problem persists after performing these checks, contact Victron Energy customer support or a qualified technician.
9. 保証とサポート
The Victron Cyrix-ct 12/24V 120 Amp Battery Combiner comes with a 5年間の世界保証 against defects in materials and workmanship. This warranty covers repairs or replacement of the product under normal use conditions.
For warranty claims, technical support, or further assistance, please contact your authorized Victron Energy dealer or visit the official Victron Energy web連絡先情報のサイト。
ヴィクトロン・エナジー公式 Webサイト: www.victronenergy.com





