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TWIN ENGINE ISSUES

Twin engine applications pose some unique challenges in addressing battery needs. Some primary charging con

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figurations are as follows:

1. Dedicate Alternator #1 to charge engine starting batteries. Dedicate Alternator #2 to the house battery bank.
2. Combine outputs from Alternator #1 and Alternator #2 to provide increased charging amperage for the main 

(house) battery bank, and supply the engine (and other secondary) batteries via Digital Duo Charges or combin

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ers. Combining the output from two alternators on two engines will require the use of Balmar’s Centerfielder II 

(described below).

This configuration will require that both alternators are equipped with Max Charge regulators, which are designed 

to provide sufficient field current to drive two alternators. For additional information, download the Centerfielder  II 

instructional manual from the Balmar website; www.balmar.net.

CENTERFIELDER II 

Balmar’s Centerfielder II enables twin engine systems to balance alternator output, 

so available amperage from both alternators can be combined to support larger battery banks. The Centerfielder 

II monitors field and ignition wires on port and starboard voltage regulators (

Max Charge 12-volt or 24 volt regula-

tors are uniquely engineered for dual alternator operation, and are the only regulators recommended for use with 

the Centerfielder II

).

When both regulators are up and running, the Centerfielder II identifies the dominant regulator and splits its field to 

supply both alternators with the same excitation current. This allows the user to supply output from both alternators 

to the same battery bank. In multi-bank battery systems, the output can be directed to additional banks via Digital 

Duo Charge or other control device described on Pages 5 to 6. A typical system wiring design is shown below:

7

Содержание 60 Series

Страница 1: ...and around your work area 7 DO NOT operate your charging system without proper fus ing Failure to do so could result in severe injury and or damage or loss of your vessel DON T take chances with fusi...

Страница 2: ...lacement alternator is adequately sized to meet the demands of your battery banks As a rule of thumb the alternator should be rated at 25 40 of your house battery capacity depending on the battery che...

Страница 3: ...at mid span between pulleys For more precise tensioning adjustment use a commonly available tensioning gauge The use of a belt tensioner or pulley jack makes it easier to adjust the belt tension by us...

Страница 4: ...damage See the Troubleshooting section later in the manual for alternator inspection guidelines FUSING The American Boat and Yacht Council ABYC in its standards for safer boating recommends that cable...

Страница 5: ...ys be that of battery being charged Sense voltage at com mon side of battery switch or at alternator positive output BATTERY COMBINERS SOLENOIDS Battery combiners enlist high amperage solenoids to cha...

Страница 6: ...wer be required than is conveniently available from the engine s primary alternator many boat ers choose to install a second alterna tor In these applications alternators can be used separately as ded...

Страница 7: ...ownload the Centerfielder II instructional manual from the Balmar website www balmar net CENTERFIELDER II Balmar s Centerfielder II enables twin engine systems to balance alternator output so availabl...

Страница 8: ...sized cable Cable size is de termined by alternator output and length of cable run See Page 3 for wiring size chart Ensure that the ground cable is adequately supported to supply strain relief 3 D Ou...

Страница 9: ...batteries being charged WARNING The engine MUST be turned off prior to switching between external and internal regulators Failure to do so will result in damage to the internal regulator USING THE SMA...

Страница 10: ...ng size chart 2 Stator Output Wire WHITE Provides an unrectified source of AC voltage which can be used as a signal for an electric tachometer 3 External Field Wire BLUE Connects to external voltage r...

Страница 11: ...rly sized cable to the battery or batteries being charged Cable size is determined by alternator output and length of cable run See Page 3 for wiring size chart 2 Stator Output Wire WHITE Provides an...

Страница 12: ...ovides sensing voltage when the internal regulator is used 6 Negative Terminal Ground Must be connected to system ground via properly sized cable Cable size is determined by alternator output and leng...

Страница 13: ...unsupported cable may damage the positive or negative terminals resulting in damage to alternator regulator and wiring Ensure that cables are adequately supported to supply strain relief 2 1 3 4 3 4 A...

Страница 14: ...ORS Large case 95 Series alternators are designed to provide outputs of 165 or 210 amps at 12 volts or 140 amps at 24 volts Mounting is a 4 ID J 180 saddle style mount Alternators in the 95 Series fea...

Страница 15: ...n See Page 3 for wiring size chart 3 Stator Output Unrectified AC voltage can be used as a signal for an electric tachometer In 12 volt systems stator terminal will connect to WHITE wire In 24 volt sy...

Страница 16: ...n an emergency a DC light bulb or test light can be used to help determine if power or working grounds exist An amp meter and a battery hydrometer with a thermometer are also helpful diagnostic tools...

Страница 17: ...e key off and the engine off remove the large harness plug from the regulator 1 Insert the end of a short length of electrical wire to the RED connector slot of the regulator harness and the other end...

Страница 18: ...wiring plug containing the field and stator wires Turn the igni tion switch to the ON position 2 Contact the positive probe of your test lamp on the FIELD terminal of the wiring plug Connect the test...

Страница 19: ...Page 19 NOTES...

Страница 20: ...or installation are not recoverable under the Balmar Limited Warranty Applicable Laws Balmar s Warranty is governed by the laws of the State of Alabama USA The Balmar Warranty provides the purchaser s...

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