Sens NRG22-20 Instructions d'exploitation télécharger pdf (Page 11)

Service

hotline: 1.800.742.2326

1.303.678.7500

SENS EnerGenius NRG Technical Manual

 13.31/26.62 for 6 or 12 cell (flooded) lead-acid at 2.22V/cell, and for 19 cell Nickel Cadmium at 1.40V/cell

 13.08/26.16 for 6 or 12 cell lead-acid at 2.18V/cell

 12.87/25.74 for 9 or 18 cell Nickel Cadmium at 1.43V/cell

E. Set the Display Selector jumper to one of the 3 available positions on JP800 (see photograph previous page):

 VOLTS – Place the short jumper in the “upper” position next to the word “VOLTS”. The 3-digit LED meter

display will show DC Volts only

 AUTO – Place the short jumper in the center position next to the word “AUTO”. The 3-digit LED meter display

will automatically and continuously alternate between DC Amps and DC Volts. The display shows DC Amps for

approximately 6 seconds and DC Volts for approximately 3 seconds.

 AMPS – Place the short jumper in the “lower” position next to the word “AMPS”. The 3-digit LED meter display

will show DC Amps only.

WARNING:

USE THE JUMP FEATURE ONLY WITH LIQUID ELECTROLYTE

NICKEL-CADMIUM BATTERIES, OR WITH RECENTLY FILLED NEW

LEAD ACID BATTERIES SUPPLIED FROM THE MANUFACTURER DRY

AND DISCHARGED. WHILE THE JUMP FEATURE MAY BE USED TO

CHARGE EXCESSIVELY DISCHARGED LEAD ACID BATTERIES THAT

HAVE ALREADY BEEN IN SERVICE, CONSULT THE BATTERY

MANUFACTURER TO DETERMINE IF AND HOW THEY CAN SAFELY BE

RESTORED TO SERVICE.

WARNING:

LEAVING A JUMPER IN THE JUMP POSITION DISABLES THE BATTERY

VOLTAGE INTERLOCK, WHICH INCREASES THE RISK OF

ACCIDENTALLY OVERCHARGING 12V BATTERIES WITH 24V SETTINGS.

INCORRECT CHARGE VOLTAGE WILL ACCELERATE GENERATION OF

EXPLOSIVE GASES, INCREASING THE RISK OF FIRE OR EXPLOSION.

F. The JUMP position allows initial charging of Nickel Cadmium batteries, or new lead acid batteries supplied from

the manufacturer dry and discharged, from a zero charge state. The JUMP feature can also be used when

recharging excessively discharged batteries already in service. To initially charge/commission zero charge

batteries, place a jumper (spare provided with charger) in the JUMP position on JP1. Operate the charger long

enough to retain more than 1.5V/cell for lead acid and 1.0V/cell for nickel cadmium batteries or until the charger

returns to FLOAT MODE (FLOAT MODE LED will be green). See Application Note 10 to finish fully

commissioning the batteries, as using the JUMP feature alone is not sufficient. Once the batteries are fully

charged, the jumper may be removed or left in the JUMP position permanently. The jumper may remain in the

JUMP position permanently to ensure that the charger is able to recharge very low or dead batteries. If battery

voltage is below 9V (12V system) or 18V (24V system) when AC power is restored and the JUMP feature is not

activated, the charger will go into Battery Fault (alarm state that disables charger). In this situation the charger

will not charge the batteries. If the JUMP feature is enabled when AC power is restored, the charger will begin

charging. Depending on the battery state of charge, the charger may go into Battery Fault and remain so for some

period of time (generally 12 – 24 hours) while the batteries are slowly charged. The Battery Fault LED will cycle

(approximately once every minute) during this time. Once Battery Fault stops cycling, the charger will return to

FLOAT or BOOST MODE as normally demanded.

WARNING:

USE ONE JUMPER ONLY ON THE DISPLAY SELECTOR

JP800. USE ONLY THE “SHORT” JUMPER PROVIDED FOR

JP800, TO AVOID INTERFERENCE WHEN REPLACING THE

COVER (“TALL” JUMPERS ARE TO BE USED ONLY ON JP1).

G. Replace the cover by sliding it straight onto the charger. Ensure the cover’s locating tabs engage the slots

in the chassis. Secure the cover with its four mounting screws.

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Sens NRG22-20 Instructions d'exploitation Page 11

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