Battery Control System (BCS-120)

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Redundancy – for Alternator and Engine Control Power

Best battery selectors are commonly used to provide DC redundancy for mission critical engine starting power delivery. The BCS-120 provides this same type of functionality, but for alternator and engine control DC power.

State of the art features

Mission-critical dependability

If one set of batteries is weak or dead, the other set of batteries can still operate the engine control panel allowing for continued operation.
Ease of use

All solid-state design uses large diodes mounted on generously sized heat sinks and a tool-free access cover. There are no moving parts or need for control electronics.
Powerful protection

The BCS prevents parallel connection of two batteries so that a bad battery does not cause the failure of the other one.
State-of-the-art reliability

For mission critical power generation engines, the BCS does two things:

- Allows for a single DC engine alternator to power two isolated DC battery banks

- Provides a redundant power feed from two isolated battery banks for engine control power

BCS-120WiringConnections

frequently Asked Questions

1. What is a BCS-120?

A BCS-120 provides power redundancy on mission critical engines for the engine DC alternator feed and the engine controller DC power feed. It provides isolated coupling between the DC alternator and two isolated battery banks and between two isolated battery banks and the engine control power feed.

2. Do I need both a BBS and a BCS-120?

If your engine has two isolated battery banks, engines commonly use both a BBS and a BCS-120. This provides DC power redundancy for engine starting power, DC alternator power, and engine control power. The SuperTorque 8R can integrate both a BBS and BCS-120 in a single packaged system.

3. Is the BCS UL Listed?

A UL listing is not applicable for the BCS-120. Like all SENS products, the BBS-800, BBS-1600 and BBS-4800 are designed for safety. The common types of UL listings for battery chargers (UL 1012, UL 1236) are not applicable, and there is no UL standard dedicated to BBS/BCS products.

4. What is the voltage rating of the BCS-120?

The BCS-120 is designed for 24VDC engine starting systems, and can also be used on 12VDC systems. The maximum DC voltage is 32VDC.

5. What are the maintenance requirements for the BBS?

Once properly installed, the BCS requires no maintenance. In environments that are subject to high vibration, corrosion, or other elements that may degrade electrical equipment, it’s recommended to periodically check the integrity of the DC cable connections.

6. What are the breakers for?

The breakers control the battery to engine control power feed circuits. Switch the breakers to the OFF position when servicing or replacing the engine batteries.

7. Can the BCS-120 be used with the SuperTorque 8Z?

Yes, the BCS-120 can be used with any engine starting battery type, whether lead-acid, AGM, NiCd, or the SuperTorque 8Z.

8. Is the BCS-120 available in an integrated system?

Yes, the BCS-120 is an option in SuperTorque 8R factory packaged engine starting systems. The SuperTorque 8R packages batteries, charging, DC disconnects, BBS, BCS, BMS, and communications into a single prewired and preassembled compact system.

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Battery Control System (BCS-120)

State of the art features

Serial code: DK-FS-120S-400-300-1-A0A-100

frequently Asked Questions

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