Magnum Energy ME Series Operator's Manual

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3. OPERATION1. Operating the InverterT h e M E S e r i e s i n v e r t e r / c h a r g e r h a s t w o m o d e s o f o p e r a t i o n : I N V E R T E R ( p r o v i d i n gpower to your appliances from the batteries) and AC (running from shore power or a generator). Wheneverthe inverter is in AC mode, it passes power directly to your appliances as well as recharges the batteriesusing a 3-stage battery charger (Bulk, Absorption and Float). This approach to battery charging providesrapid and complete charging cycles without placing undue stress on the batteries. Inverter operation isf u l l y a u t o m a t i c .SearchWith search mode enabled, the inverter pulses the AC output looking for an e l e c t r i c a l a p p l i a n c e( t y p i c a l l y 5 t o 1 0 0 w a t t s , d e p e n d i n g u p o n t h e s e t t i n g y o u ’ v e selected). Whenever there is noload detected, the inverter automatically goes into search mode (sleep) to minimize energy consumption.During this time, the i n v e r t e r ’ s g r e e n L E D f l a s h e s ( f a s t ) t o i n d i c a t e S E A R C H m o d e . W h e na n a p p l i a n c e i s switched on inside the coach, the inverter recognizes the need for power and auto-m a t i c a l l y s t a r t s t h e i n v e r t e rInverter ModeW h e n e v e r A C S h o r e P o w e r i s n o l o n g e r s e n s e d , t h e i n v e r t e r a u t o m a t i c a l l y t r a n s f e r s t ob a t t e r y p o w e r w i t h n o i n t e r r u p t i o n t o y o u r a p p l i a n c e s . T h e i n v e r t e r ’ s g r e e n L E D flashesonce every 2 seconds (medium flash) to indicate it is running on battery p o w e r a n d p r o v i d i n g A C t ot h e c o a c h .AC Shore Power ModeW h e n e v e r A C S h o r e P o w e r i s s e n s e d , t h e i n v e r t e r a u t o m a t i c a l l y t r a n s f e r s t o t h es h o r e p o w e r w i t h m i n i m a l i n t e r r u p t i o n t o y o u r a p p l i a n c e s .Bulk Charge ModeW h e n e v e r t h e i n v e r t e r i s r u n n i n g o n n o m i n a l A C S h o r e P o w e r , i t c h a r g e s t h eb a t t e r i e s . T h e i n v e r t e r ’ s g r e e n L E D s t a y s O N ( s o l i d ) t o i n d i c a t e t h e f i r s t s t a g e o fcharging. During bulk charging, the charger supplies the maximum amount of constant current to thebatteries. As the battery voltage rises to a set value (typically 14.1 VDC for GEL, 14.3 VDC forAGM, and 14.6 VDC for liquid lead acid), the charger will then switch to the next chargingmode.Absorption Charge ModeAs the inverter continues to run on nominal AC Shore Power, and the batteries have been successfullybulk charged, the charger enters its second stage of charging. T h e i n v e r t e r ’ s g r e e n L E D f l a s h e s o n c ee v e r y s e c o n d ( f a s t f l a s h ) t o i n d i c a t e a b s o r p t i o n charging for 1 - 3 hours depending upon batterybank selection (refer to the ME Series Remote manual). The charger then switches to its final chargingmode.Float Charge ModeA s A C s h o r e p o w e r c o n t i n u e s , t h e i n v e r t e r ’ s g r e e n L E D f l a s h e s o n c e e v e r y 8 seconds(slow flash) to indicate the third and final stage of charging. The batteries a r e h e l d a t t h e f l o a t v o l t a g e(typically 13.6 VDC for GEL, 13.1 VDC for AGM, and 13.4 VDC for liquid lead acid) asl o n g a s A C i s p r e s e n t a t t h e i n v e r t e r ’ s i n p u t . F l o a t c h a r g ing reduces battery g a s s i n g ,m i n i m i z e s w a t e r i n g r e q u i r e m e n t s ( f o r f l o o d e d b a t t e r i e s ) and ensures the batteries aremaintained at optimum capacity.Battery SaverTM ModeD e s i g n e d t o k e e p b a t t e r i e s f u l l y c h a r g e d o v e r l o n g p e r i o d s ( s t o r a g e ) w i t h o u t dryingthem out. Whenever the charger is in float for 4 hours with no DC loads r u n n i n g , t h e c h a r g e r w i l lt u r n O F F . I f t h e b a t t e r y v o l t a g e d r o p s b e l o w 1 2 . 5 V D C , t h e c h a r g e r w i l l a u t o m a t i c a l l yi n i t i a t e f l o a t m o d e t o r e t u r n t h e m t o a f u l l c h a r g e .Ó 2003 - Magnum Energy, Inc. 29