General Information
TruSine 4.5 kW Inverter
Page 27
Owner’s Manual
and the dual battery systems.
In the single battery system, there is one battery which is shared for starting the engine and operating the
inverter. This is a common practice in a service vehicle where the engine runs all the time and allows the
alternator to provide continuous charging for the battery. In this case, the inverter can be connected directly to
the engine cranking battery. The most important detail of this system is the alternator output rating. The
continuous output of the alternator needs to be at least as much as the total DC current draw on the system.
The total DC current draw must include the inverter, warning lights, radios, engine controls, and any other
device connected to the DC system. Care should be used when operating this type of system while the engine
is shut off. The inverter will shut itself OFF for low battery but most other DC loads will not. The vehicle battery
may be drained too low to restart the engine.
The dual battery system uses two separate batteries, one for starting the engine and operating the vehicle's
systems, and one for operating the inverter. The two batteries are usually referred to as the "cranking battery"
and the "house or auxiliary battery" respectively. The two separate batteries are usually charged from the
same source, the engine alternator, but are separated by a device called a battery isolator. The battery isolator
allows DC current to flow from the alternator into each battery, but blocks current from flowing from one battery
to the other. This is a must to protect the cranking battery in recreation vehicles, boats and other vehicles
where the inverter needs to be operated when the engine (therefore the alternator) is not running.
6.7 Battery Charging Guidelines
CAUTION
The following information on battery charger setup adjustments should be used as guidelines only. Vanner
strongly recommends that you contact the manufacturer of your batteries to obtain the specific charging
setup values for the type and model of battery you are using. This is due to the fact that battery charging
parameters such as bulk, absorption, float and equalize voltages vary from one manufacturer to another,
and that gel cell batteries have different parameters than wet lead acid batteries. An improperly adjusted
battery charger may cause damage to your batteries!
The maximum charging current for a battery is usually equal to 20% of the battery's Amp hour capacity (“C”) for
lead acid batteries, and 50% of the battery's C for gel cell batteries. The C rate is numerically equal to the
amp-hour capacity for the battery. For example, a 280 amp-hour battery has a C rate of 280 amps, and the
maximum charge rate would be 56 amps DC. (Note that this is not the same as the battery's Cold Cranking
Amp rating.) You should also take into consideration that if two batteries are connected in parallel their amp-
hours add but if batteries are connected in series their amp-hours remain the same.
7 MAINTENANCE & TROUBLESHOOTING
7.1 Preventative
Maintenance
There are no user serviceable components inside the TruSine Inverter/charger. For service refer to Vanner
Power Group or other qualified service personnel.
Maintenance Items:
For continued reliability and safety, a monthly maintenance program should be implemented to include the
following:
1. Check to insure that all AC and DC wiring is secure and connections are tight and corrosion free.
2. Check air ventilation openings for dust and other obstructions.
3. Examine receptacle, indicators and switches for cracks and breaks.
Trouble Shooting
Problem:
The TSR-2 Remote Control Panel does not respond.
Check:
Suspect Step 92 Inverter Address has been changed from 1. Change back to 1 using Demo
