Blue Sea Systems PN 7600 - Manual

Marine Electrical Products

CL-Series BatteryLink™ ACR

PN 7600

Features

• 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

fi

ltering 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

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

fl

owing 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

Typical Con

fi

guration - Sense One Battery Bank

• 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

fl

owing in this wire.

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

charging source:

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 con

fi

guration, for example, when the alternator is connected to

one battery bank, and the battery charger is connected to the other battery bank.

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

To sense both batteries banks:

Con

fi

guring 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.

Guarantee

Any Blue Sea Systems product with which a customer is not satis

fi

ed 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

Speci

fi

cations

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.

Electrical Connections

The wiring con

fi

guration below represents a common installation but is not meant

to be a guide for any speci

fi

c vessel. Consult a marine electrical professional for

a wiring con

fi

guration 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.

Blue Sea Systems Inc.

Phone (360) 738-8230

425 Sequoia Drive

Fax (360) 734-4195

Bellingham, WA 98226 USA

E-mail [email protected]

www.bluesea.com

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