Plena Easy Line Mixer Installation and User Instructions Description
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An LED meter monitors the master output before the zone selection. This signal is also present on the headphone connector below the output meter.
The output meter and the headphone connector monitor the call signal if a call is being made, otherwise the BGM channel is monitored.
The Plena Easy Line Mixer has an input for 24 VDC backup power, but has no built in 24 VDC battery charger. However, Power Amplifiers from the Plena product range have a built in 24 VDC battery charger. A separate battery charger is, therefore, not required. The charger charges the battery with a 0.5 A constant current until the battery voltage reaches 27.4 VDC.
The charger then switches over to constant voltage charging (also known as float charging).
Note
When using the unit with backup power of 24 V, make sure that the unit is always powered ON. When the unit is switched OFF, the batteries will be drained as this will be regarded as a power source. Consequently the unit will revert to
24 VDC power from the 24 V input.
figure 2.1: Schematic overview of the Plena Easy Line Mixer
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