Technical data

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MKA4ST0UKPLAN5-7/Power Lan/ed.5/09-2003/UK
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POWER PROTECTION
2.3.5 Mains Failure
If mains is out of voltage or frequency tolerances, POWER LAN will transfer to batteries.
At that moment, the charger stops and the inverter is activated (which was synchronized to mains) and
batteries start to discharge.
The result is that the load continues to be supplied by the inverter.
The front mains led switches off, the alarm led is switched on and the alarms are activated.
When mains returns to its normal values and provided that there is no battery cut-off, the inverter synchronizes
to mains, the inverter stops, the charger starts up, the alarms are reset, the alarm led is Off and the mains led
is switched on.
During battery discharge the inverter may stop because it is not allowed to discharge the batteries.
There are several areas which do not allow the discharging of batteries:
2.3.5.1 Auto-Off
If POWER LAN is operating from batteries and for a period of 30 seconds the output current is less
than the value of MINIMUM THRESHOLD and provided that the option AUTO-OFF is activated, POWER
LAN will stop the inverter and cut the output and go into stand-by mode.
2.3.5.2 Authorized autonomy
When the AUTHORIZED AUTONOMY is finished, POWER LAN stops the inverter, cuts the output
and gets into stand-by mode.
2.3.5.3 Empty Batteries
When battery voltage gets down to 10V/Bat, POWER LAN stops the inverter to avoid battery damage
and goes into stand-by mode.
If, after completing the battery isolation, mains returns before the stand-by time finishes, POWER LAN will
start automatically provided that the stop keys have not been pressed. In that case it will not start. If you want
to start it up, you must press the front push button or do it through software.
2.3.6 Standby Working
The unit is in standby when, in the absence of mains, the unit is stopped.
In this mode the internal circuits are using battery power. POWER LAN can communicate and keep its internal
clock.
The power supply of internal circuits will stop if battery voltage decreases under a minimum value of voltage
(11V/Bat) or when the STAND-BY time is finished. At that moment, POWER LAN stops completely, there is
not any possibility of communication, the internal clock stops and any consumption of battery power is arrested.
To restart POWER LAN, it is necessary to restore the mains and push the front push button or activate it
through software.