2.2.3.2 Charging a previously damaged battery
Batteries previously damaged by deep discharge or by sulphating are characterised by a low quiescent voltage, poor
current capacity and high internal resistance.
When the internal resistance of the battery measured by the charging station is over 200m
Ω
, the total duration of the
initial and equal charging periods is set to 6 hours provided sufficient charging energy is available. During this period the
battery voltage is limited to 14.7 V. After charging is completed a battery fault will be indicated on the display with details
of the charged capacity (DEEP.DISCH.xxxAh).
charge current
14,7 V
13,8 V
5A
start
deep discharged start
time
battery capacity
full
empty
90 %
inital charge
(U)
charge
(I)
equal charge
(U)
float charge
(IU)
(deep discharged battery)
14,3 V
chage voltage
2.2.3.3 Charging the wrong type of battery (e.g. 6 V) or a battery with cell closure
If the battery is still below 11.8V open circuit voltage after 5Ah of charged current then the charging process is halted.
This is provided that the current available or specified via the priority was greater than 2A for a period of 15 minutes. A
battery fault will then be indicated on the display with details of the charged capacity (BATT.DEF._CxAh).
2.2.4 Economy mode (Slow Down Mode)
When the module voltage falls below 21.5V the charging station changes to economy or night mode (Slow Down) and
reduces its own consumption to about 35mA. In this mode the charging station draws its supply from a battery connected
to it. This is necessary in order that important data such as the priorities and charging phases of the batteries charged
during the day are not wiped out.
2.2.5 Charging in order of priority
The charging station charges the batteries connected to it in order of priority. This means that batteries are charged in
the order in which they are connected. The battery that was connected first is also the first to be allocated to an available
current. Any surplus energy will then be immediately passed on to the batteries that were connected next.
2.2.6 Ampere hour meter
The charging station determines the charged ampere hours from the charged current and the time that has passed.
These are shown on the display. If the charging station is on float charge then the ampere-hours are no longer metered.
Supplying details of the ampere-hours in this way enables the charging station operator to invoice the customer fairly.
The customer only pays for the ampere-hours charged regardless of the state of the battery.
2.2.7 Rotary switch
The individual channels can be called up using the rotary switch. More detailed information on each selected channel
then appears in the first line of the display. In addition the charging of all channels can be interrupted in the respective
end positions of the rotary switch. This is essential when changing over batteries. Between both Channel 1 and Charge
stop, and between Channel 8 and Charge stop there is an empty switch setting.
Operating instructions PL2085 charging station
Page 6
10.12.2007
Содержание PL2085
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