Ce-niehoff-co N1387 Alternator/EPM Operating Reference Card Manuel d'utilisateur télécharger pdf (Page 2)

N3225 LEDs COLOR N3225 STATUS

TABLE 2 – N3225 Regulator LEDs Diagnostics

Regulator is not energized. Measure IGN terminal voltage.

If voltage is above 21 V, regulator is defective.

Off (Clear)

Respective system voltage is below regulated setting or is

processing soft start (20-second delay).

Steady

AMBER

Respective system voltage is reading high voltage.

Flashing AMBER

(either 28 V or 14 V)

GREEN

Normal operation (respective system voltage is at regulated

setting)

Alternator is shut down and is not producing power for either

voltage. 28 V side trips after 2 seconds of reading voltage

above 32 V. 14 V side trips after 2 seconds of reading voltage

above 16 V. Regulator remains in this mode until reset by

restarting engine or if system voltage drops below 22 V or 11

V, respectively. See Chart 3 on page 9 of Troubleshooting

Guide for 28V systems, Chart 4 for 14 V systems.

EPM LED COLOR

EPM STATUS

TABLE 3 – EPM LED Diagnostics

EPM is not energized or EPM is defective.Off (Clear)

Flashing GREEN

Steady

EPM has connected the batteries during start-up and has

prevented automatic disconnection for 3 minutes after vehicle

shuts down when only vehicle battery-connect button is

pressed.

Normal operation (batteries are connected to the system and

engine is running)

GREEN

AMBER

(either 28 V or 14 V

with the other LED

off)

GREEN

(both flashing once

every 5 sec.)

Regulator is energized, but waiting for AC signal from

alternator.

II0041A Side 2 of 2 CEN

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Ce-niehoff-co N1387 Alternator/EPM Operating Reference Card Manuel d'utilisateur Page 2

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