Instructions

ManualsBrandsBlue Sea Systems ManualsSolar & Wind PowerML-ACR Heavy Duty Automatic Charging Relay 12V

7620100 / 7621100 / 7622100 / 7623100

980035700 Rev.001

• Magnetic Latch (ML) - draws very low current in the ON or OFF states, and draws moderate current for very

short time when changing state

•StartIsolation(SI)—canbeconguredfortemporaryisolationofHouseloadsfromEnginecircuitduring

 enginecrankingtoprotectsensitiveelectronics

•EngineIsolation(EI)—canbeconguredforisolationoftwoengineswhilebotharerunningtoprotect

 engineelectronicsandmaximizealternatoroutput

• Senses charging on two battery banks

•LEDoutputtoremotelyindicatewhenbatteriesarecombinedorisolated

•Tin-platedcopperstudsformaximumconductivityandcorrosionresistance

•Labelrecessesforcircuitidentication

•Silveralloycontactsprovidehighreliabilityforswitchingliveloads

• Includes a Remote Control Contura Switch (2146)

• IncludesaDeutschDTMconnector(matingpartnotincludedbutrequired)

Specications  12VDC 24VDC

Wire Size and Current Ratings See table below See table below

ML-Coil Function Bi-stable Bi-stable

AmperageOperatingCurrent continuous <13mA@25°Cnominalvoltage <13mA@25°Cnominalvoltage

  changingstage(20ms) <7A@25°Cnominalvoltage <4A@25°Cnominalvoltage

OperatingVoltage(contacts)  9-16VDC 18-32VDC

ControlVoltage  9-16VDC 18-32VDC

RelayContactPosition:

 -Combine(30sec.)  13.5V 27.0V

 -Combine(90sec.)  13.0V 26.0V

 -OpenLow(10sec.)  12.35V 24.7V

 -OpenLow(30sec.)  12.75V 25.5V

 -OpenHigh  16.2V 32.4V

LiveCurrentSwitching  300A@12VDC-10,000Cycles 150A@24VDC-10,000Cycles

Terminal Stud Size 3/8"-16 3/8"-16

MaximumTerminalStudTorque  140in-lb(15.8N•m) 140in-lb(15.8N•m)

Ring Terminal Size 3/8" (M10) 3/8" (M10)

TerminalRingDiameterClearance 1.18" (30 mm) 1.18" (30 mm)

ControlCircuitCurrentDraw  <40mA <40mA

RemoteControlConturaSwitch

Action     SPDT,ON-OFF-ON

Seals     Internal&ExternalGasketPanelSeal

MountingHole   0.83”x 1.45” (21.08 mm x 36.83 mm)

LEDRating   100,000hourshalf-life

HarnessConnector DeutschDTMSeriesDTM06-6S

MatingPartRequirements   seeLADDIndustriesatwww.laddinc.com

RequiredReceptacleShell  DTM-04-6P

Wedgelock WM-6P

Terminal Pins 1060-20-0122

†

Sealing Plugs 0413-204-2005

†

HandCrimpTooling   DTT-20-0

‡

RegulatoryMeets ISO 8846 and SAE J1171 external ignition protection requirements, CE marked, Rated IP66

* Special modifications are available depending on customer requirements. No polarization on standard product.

† Quantity depends on optional wire connections. The total number of pins and sealing plugs is 6.

‡ Required for hand assembly of wires and terminal pins.

MarineElectricalProd

ucts

PN Termination

Manual

Control

Circuit

7620100 DeutschConnector No 12VDC

7621100 DeutschConnector No 24VDC

PN Termination

Manual

Control

Circuit

7622100 DeutschConnector Yes 12VDC

7623100 DeutschConnector Yes 24VDC

ML– ACR

Automatic Charging Relays



Guarantee

BlueSeaSystemsstandsbehinditsproductsforaslongasyouownthem.

Find detailed information at www.bluesea.com/about. For customer service, call 800.222.7617.

OverviewofApplication

The ML-Series ACR automatically combines batteries during charging, and isolates batteries when there is no

charging sensed on either battery bank.

ML-Series ACR Function 12 Volt DC Operation 24 Volt DC Operation

Automatically combines battery

banks when sensed voltage

levels are:

Above 13.5V for 30 sec.

Above 13.0V for 90 sec.

Above 27.0V for 30 sec.

Above 26.0V for 90 sec.

Automatically isolates battery

banks when sensed voltage

levels are:

Below 9.6V (undervoltage lockout)

Below 12.35V for 10 sec.

Below 12.75V for 30 sec.

Above 16.2V (overvoltage lockout)

Below 19.2V (undervoltage lockout)

Below 24.7V for 10 sec.

Below 25.5V for 30 sec.

Above 32.4V (overvoltage lockout)

StartIsolationorEngineIsolation.Theisolationinputsenableoneoftwofunctionsdependingon

howtheinputsarecongured.

NOTE: The ML-Series ACR can be congured for Start Isolation or Engine Isolation, but not both.

• StartIsolation-Temporaryisolation(3−5 minutes) of house loads from the engine circuit during engine

 crankingtoprotectsensitiveelectronics.CongureStartIsolationwhenthereareheavycrankingloads

 causingsagsandspikesthatmightdamageelectronicsintheHousecircuit.Seepage3.

• EngineIsolation-Isolatetwoengineswhilebotharerunningtoprotectengineelectronics,andto

 maximizealternatoroutput.CongureEngineIsolationwhentheenginemanufacturerrequiresit,and

 whenthereareseparatebatteriesforeachengine.Seepage3.

UndervoltageorOvervoltageLockout.

• Undervoltagelockoutpreventsbatteriesfrombeingcombinedwheneitherbatteryisbelow9.6V@12VDC

 operationor19.2V@24VDCoperation.

• Overvoltagelockoutpreventsbatteriesfrombeingcombinedwheneitherbatteryisabove16.2V@12VDC

 operationor32.4V@24VDCoperation.

ControlSwitchRemoteOperation. OptionalConturaControlSwitch—sustained(SPDT)ON-OFF-ON.

TheControlSwitchshouldbemountedinaconvenientlocationnearhelmcontrolstoallowforquickaccess.

NOTE: Alternatively use a momentary (SPDT) (ON)-OFF-(ON) or momentary push button switch to provide cross connect and/or battery isolation.

To cross connect

(combine) battery banks

Switchto“ON”combinesbatterybankstoprovidemorebatterypowerinhard

starting situations.

To isolate battery banks

Switch to “OFF”- when the battery banks are isolated using the Control

Switch, the battery banks remain isolated, and for at least 30 seconds after

thecontrolswitchisreturnedtothe“AUTO”position.

ControlSwitchRemoteIndicationorML-ACRStatus

NOTE: The remote switch has two LEDs (top and bottom). These LEDs operate simultaneously-either they are both ON or both OFF.

page1of4

LEDINDICATION ACRSTATEORCONDITION

RemoteSwitchSetto“AUTO”ornoRemoteSwitchInstalled

LEDsOFF Batteries are isolated

LEDsON Batteries are combined

LEDsslowsteadyblink,ON-OFF StartorEngineIsolationiscausingbatteriestobeisolated

LEDsquicksteadyblink,ON-OFF

Undervoltage lockout--either battery is below 9.6V@12V DC

operation or 19.2V@24V DC operation.

Overvoltage lockout--either battery is above 16.2V@12V DC

operation or 32.4V@24V DC operation.

RemoteSwitchSettoOVERRIDE“ON”or“OFF”—Automaticoperationissuspendedfor10minutes

afterremoteswitchisreturnedto“AUTO”

LEDsdoubleblink,

Blink-Blink-Pause,Repeat

Manual override--check ACR for switch states OR

ACR mechanical failure

WireSizeandCurrentRatings

Wire Size

Cranking

30 sec.

Intermittent

5 min.

Continuous

(UL 1107)

2/0AWG(70mm²) 1,000A 400A 225A

4/0AWG(120mm²) 1,100A 400A 300A

2×4/0AWG(2x120mm²) 1,450A 700A 500A

Blue Sea Systems, Inc.

4600 Ryzex Way

Bellingham, WA

98226 USA

Phone 360.738.8230

www.bluesea.com

Summary of content (4 pages)

PAGE 1
Overview of Application Marine Electrical Products ML– ACR The ML-Series ACR automatically combines batteries during charging, and isolates batteries when there is no charging sensed on either battery bank.
PAGE 2
Installation Overview of Application (continued) Mounting Manual Control Override Knob PN 7622B / 7622100B / PN 7623B / 7623100B Install the ML-Series ACR as close as possible to both battery banks so that positive and negative wires are as short as possible, and voltage drop in these wires is kept to a minimum‡. To avoid corrosion to terminals and connecting wires, mount in a dry and protected location.
PAGE 3
Installation Instructions (continued) Installation Instructions (continued) Start Isolation Engine Isolation To enable Start Isolation: • Connect the brown wire (ISOLATION #1) from the harness to the terminal or wire running from the start key switch to the starter solenoid. Make this connection through a 2 Amp in-line fuse. This connection can be made at the start key switch or at the starter solenoid, but must be to the line that is positive only when cranking the engine. as shown below.
PAGE 4
Installation Instructions (continued) 4. Remote indicator lamp (Optional) Use Blue Sea Systems LED 8033 (amber), 8171 (red), or 8172 (green). To install a remote LED indicator: • Connect switch pin 8 to DC positive protected by a 2 Amp in-line fuse. • Connect pin 7 to the yellow wire from the harness. 3.75" 95.25mm 3.00" 76.20mm 2.03" 51.56mm 5.47" 138.94mm 1.03" 26.16mm 4.50" 114.30mm 1.90" 48.26mm 980035700 Rev.