Operation; Pwm Technology (Series Pulse Width Modulation); Battery Charging Information - Furrion net-zero FSPP95SA-BL Manuel D'instructions

Operation

PWM Technology (Series Pulse Width Modulation)

The controller adopts the advanced series pulse width modulation (PWM) charging mode.
With range of 0-100%, it can charge the battery quickly and stably under any condition of solar
photovoltaic system.
PWM charging mode uses automatic conversion duty ratio pulses current to charge the battery.
The battery can be fully charged safely and rapidly with the pulse current. Intermissions allow
the oxygen and hydrogen generated by chemical reactions to be combined again and absorbed.
It can eliminate concentration polarization and ohm polarization naturally and reduce the
internal pressure of the battery so that the battery can absorb more power. Pulse current
charging mode allows the battery more time to react, which reduces the gassing volume and
improves the acceptance rate of the charging current.

Battery Charging Information

● Bulk Charge
In this stage, the battery voltage has not yet reached boost voltage and 100% of available
solar power is used to charge the battery.
● Boost Charge
When the battery has recharged to the Boost voltage setpoint, constant- current regulation
is used to prevent overheating and excessive battery gassing. The Boost stage lasts for 120
minutes and then goes to Float Charge.
● Float Charge
After the battery is fully charged in the Boost voltage stage, the controller reduces the
battery voltage to the Float voltage set point. When the battery is fully recharged, there
will be no more chemical reactions and all the charge current transmits into heat and gas
at this time. Then the controller reduces the voltage to the floating stage, charging with
a smaller voltage and current. This reduces the temperature of the battery and prevents
gassing, while also charging the battery slightly at the same time. The purpose of Float
stage is to offset the power consumption caused by self consumption and small loads in
the whole system, while maintaining full battery storage capacity. In Float stage, loads
can continue to draw power from the battery. In the event that the system load(s) exceed
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