Features | Blue Sea Systems PN 7600 instruction

Marine Electrical Products

CL-Series BatteryLink™ ACR

Features	PN 7600

•Automatic control for charging dual battery banks

•Voltage sensing for charge source on either battery bank

•Remote sensing to avoid voltage drop issues

•Low current draw: less than 12mA open, 175mA closed

•Input ﬁltering for noise rejection

•Noise-free circuitry will not interfere with other devices

•Current limiting allows choosing wiring for charging currents without the need to oversize conductors for connected load currents

•Adjustable COMBINING (automatic connecting) voltage and OVERVOLTAGE disconnect

•UNDERVOLTAGE lockout to prevent automatic closure if second battery is discharged below 4 volts (when using dual voltage sensing)

•Indicators for UNDERVOLTAGE, COMBINED, and OVERVOLTAGE

•Internal time delay prevents relay action for transient conditions, voltage must be within range for approximately one minute to cause closure, relay will open when overvoltage is detected for approximately 15 seconds.

•Meets SAE J1171 - External ignition protection requirements

Blue Sea Systems Inc.	Phone (360)	738-8230
425 Sequoia Drive	Fax (360)	734-4195
Bellingham, WA 98226 USA	E-mail conductor@bluesea.com
	www.bluesea.com
	6330 Rev.005

Installation Instructions

Mounting

•Select a mounting location near the battery banks or the battery switch.

•Choose a cool, dry, and well-ventilated location if possible. The CL-Series BatteryLink™ ACR may become very warm when operating at full current capacity or in current limiting mode.

•Avoid locations directly above batteries where corrosive fumes may be present.

•Do not mount directly to a conductive surface because of the proximity of the mounting screws to the main electrical terminals.

•Mount the relay securely with #8 or M4 screws.

Wiring

Use interconnecting wiring that provides acceptable voltage drops at the intended charging currents. Wiring should have at least 60 Amp current-carrying capacity to be compatible with the current limiting feature of the CL-Series BatteryLink™ ACR. Use:

•At least 8 AWG wire for a connection length of 6 feet or less

•At least 6 AWG wire or larger, according to voltage drop calculations, for runs longer than 6 feet

ABYC E-11 recommends circuit protection within 7 inches of each battery connection or source of power. Circuit protection may be as far as 40 inches from a source of power other than a battery, or 72 inches from a battery if the wiring is protected by a sheath or enclosure.

To avoid nuisance tripping or fuse blowing, the wire should be:

•Sized to carry the full capacity of the charging source

•Protected by a time-delay fuse (e.g., Bussmann TFC rated 75A or larger) or thermal circuit breaker (e.g., Bussmann 187 rated 150A).

Current-limiting

The current-limiting feature of the CL-Series BatteryLink™ ACR prevents excessive current from ﬂowing through it and can be treated as a self-limiting protective element. The current handling capacity is shown in this table. Time delay allows brief currents up to 150 Amps.

Time	Current Rating
Continuous	60 Amperes
7 Minute	90 Amperes

2 Minute	120 Amperes

Electrical Connections

The wiring conﬁguration below represents a common installation but is not meant to be a guide for any speciﬁc vessel. Consult a marine electrical professional for a wiring conﬁguration applicable to your boat.

Disconnect the positive battery connections before beginning the installation. If there is a possibility of tools causing a short to grounded metal or conductors, disconnect the negative terminals before disconnecting the positive terminals.

Speciﬁcations

Automatic Combined Voltage	Adjustable from 12.2V to 14V
	• Preset to 13.5 (13.4 to 13.6)
Automatic Undervoltage Disconnect	6% Lower than combining (closing)
voltage	• Preset to 12.7 (12.6 to 12.8)
Automatic Overvoltage Disconnect	Adjustable from 13.5V to 15.5V
	• Preset to 15.0 (14.85 to 15.15)
ON/OFF Time Delay	Approximately 1 min. for charge/discharge
OFF Delay	Approximately 15 sec. for overvoltage

Additional Applications

•Remote battery charging for anchor windlass, bow thrusters, nav station

•Load control to prevent over discharge

Description

The CL-Series BatteryLink™ ACR connected into your boat’s electrical system provides automatic control for charging dual battery banks. The ACR has two parts:

•A relay - a switch that is activated by an electrically powered magnetic coil.

•An electronic circuit that senses the voltage level of the boat’s batteries and signals the relay to switch:

-Closed when voltage is high (the ACR’s COMBINE voltage)

-Open when voltage is lower (the ACR’s UNDERVOLTAGE voltage)

When the voltage level of the battery bank being charged reaches a certain level, both battery banks are automatically connected and charged.

Guarantee

Any Blue Sea Systems product with which a customer is not satisﬁed may be returned for a refund or replacement at any time.

•Gray dashed [2] and [4] lines indicate optional connections

•Gray solid [1] line indicates a recommended but not required connection

Typical Conﬁguration - Sense One Battery Bank

To sense the voltage level of the battery bank connected to your boat’s charging source:

•Connect Terminal A to the battery bank connected to the charging source.

•Connect Terminal B to the battery bank not connected to the charging source.

•Connect Terminal 3 to the main negative bus or the negative terminal of the nearest battery, through a 10-15 amp in-line fuse, to prevent fault current from ﬂowing in this wire.

Sense Both Battery Banks

When charging sources are attached to both battery banks, the CL-Series BatteryLink™ ACR can be connected to sense the voltage levels of both battery banks. Use this conﬁguration, for example, when the alternator is connected to one battery bank, and the battery charger is connected to the other battery bank.

To sense both batteries banks:

• Connect Terminal 1 to Terminal B with a jumper wire.

Conﬁguring the CL-Series BatteryLink™ ACR to sense both battery banks also establishes Undervoltage lockout. This lockout prevents automatic connection of both battery banks if the second battery bank is discharged below 4 volts. When the voltage levels of the battery banks are considerably different, they should not be connected -- the current through the CL-Series BatteryLink™ ACR may be high enough to fuse the internal relay.

If the voltage drop in the line connected from the battery bank to Terminal B is expected to be less than 3%, connecting Terminal 1 to Terminal B with a short jumper is suitable. If voltage drop is expected to be more than 3%, for example, when connecting widely separated batteries, mount the CL-Series BatteryLink™ ACR near the battery bank connected to Terminal A and use a sensing wire from terminal 1 to the battery bank connected to Terminal B. The remote sensing wire carries less than 0.2A when the relay is closed so this conductor can be 16 AWG and should be protected against faults with a suitable fuse (any value between 2 and 20 Amps) at the battery connection.

PN 7600 specifications

The Blue Sea Systems PN 7600 is a highly regarded product in the realm of marine electrical systems, designed specifically to enhance the reliability and efficiency of onboard power distribution. This compact and durable panel is ideal for boat builders and owners looking to improve their electrical infrastructure without compromising on space or usability.

One of the main features of the PN 7600 is its innovative design, which incorporates a 12V or 24V DC distribution system. It supports a maximum current rating of 100 amps, making it suitable for a variety of applications, from small vessels to larger yachts. The versatile nature of the panel means it can accommodate multiple circuits, making it an excellent choice for custom installations.

Safety is a paramount consideration in marine environments, and the PN 7600 excels in this regard. The panel is equipped with a transparent cover to protect the system from accidental activation while providing a clear view of indicator lights. Moreover, it utilizes an advanced circuit breaker system, allowing for easy reset capabilities. Each circuit can be monitored individually, providing enhanced control and concise management of electrical systems.

The PN 7600 employs high-quality materials that are resistant to corrosion, ensuring durability in harsh marine environments. Its innovative technology includes a modular design that allows for seamless integration with other Blue Sea Systems products. This modular approach not only simplifies installation but also enhances the overall scalability of the system, enabling boat owners to expand their electrical setup as needed.

Additionally, the product features intelligent labeling, assisting users in identifying individual circuits quickly and effectively. This attention to detail helps in maintenance and troubleshooting, ensuring that boat owners can easily manage their electrical systems.

In summary, the Blue Sea Systems PN 7600 is a sophisticated electrical distribution panel that brings together efficiency, safety, and ease of use. With its robust construction, smart design features, and flexibility, it stands out as a key component for modern marine electrical systems. Whether for new builds or retrofits, the PN 7600 is a wise investment for anyone looking to elevate their onboard power management capabilities.