9.3 Inverter Mode
Inverter Mode can have several other names such as Emergency Power and Battery
Power Mode. This terminology may be used throughout this document.
During Inverter Mode, the inverter is producing a pure sine wave for the output loads
and the batteries are being discharged. The output current is limited by an active pulse
by pulse current limit technique and prevents the inverter from failure.
In the event of an overload there are several ways that the inverter will protect itself.
First is the pulse by pulse limit and second is by average sensing. The pulse by pulse is a
transient protection and occurs in the micro-second time scale, the average sensing
looks at a heavily filtered signal and occurs in the seconds time scale.
Since the crest factor is very high on the E3MINI Series, loads that have high inrush
currents are quickly up and running. This is very beneficial with Switched or Normally-
Off loads. The Normally-On and multipurpose Normally-Off/Switched outputs all
produce voltage during Inverter Power mode.
9.4 AC Output(s) Types
9.4.1 Normally-On Output
There is one Normally-On Output located on the terminal block and is labeled N-ON.
The Normally-On Output is energized 24/7 as long as the system is powered on.
9.4.2 Normally-Off/ Switched Output
There are three multipurpose Normally-Off/Switched outputs (OUT 1, OUT 2 and OUT
3) which can be energized on and off during the charging mode of operation. These
outputs are controlled by applying an AC voltage to the Switched Command Input CMD
1, CMD 2 and CMD 3 respectively. These output types function as an interface to energy
saving controls such as time clocks, daylight harvesting, photo-sensors or any building
occupation sensing.
NOTE -
When the E3MINI Series changes mode of operation from Charge Mode to the
Inverter Mode,
ALL
output types will automatically energize regardless of the state of
the Switched Command Input.
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