3.1.7 Control Keyboard
By using the tact switches underneath the LCD screen, the factory set values can be configured to the user’s custom
requirement. Freely programmable values can only be changed within a pre-set window. These minimum-maximum
values are selected in a way that even extreme adjustments do not lead to severe damage to the lead batteries.
However, the operating elements are not protected or locked with a child-proof lock (code). For this and many other
safety reasons, we would highly recommend that you make the System-Manager as well as the battery room inaccessible
to children
3.1.8 System Voltage
The System-Manager adjusts itself automatically to 12 or 24 V system. For this it is necessary that the battery of the
proper voltage is connected to the System-Manager first.
There are two variants of the System-Manager: one for the system voltages of 12/24V and another 48V version. The
12/24V System-Manager only adjusts itself for system voltages below 30 V. For 48 V systems you will need another
model with more voltage-stable components. Please have a look at the marks on the case for information if your System-
Manager fits the desired system voltage.
4 Indication Of Status
The display constantly changes its information. All values and system information are indicated alpha-numerically. The
following displays can only be seen during regular operation (not while programming). You can stop the scrolling in one of
the following windows while pressing once the right Menu key.
”U Bat”: Since the voltage drop between controller and battery can be calculated without sensor
wires, this display shows the battery’s actual voltage at the battery poles, and not the voltage at the controller’s
connection terminals.
”I_in” is the charging currents flowing into the battery. Whenever the battery is full and not able to
consume any charge current „I_in“ could be zero even the sun is shining with high intensity.
”I_out” is the discharge currents flowing out of the battery and is composed of the load current
running through the controller.
I_mod is the charging current produced by the solar modules. When the voltage of the battery is
getting near the final charge voltage, the module current „I_mod“ is substantially higher than the charge current (I_in).
”I_in” will be regulated by the controller in order to protect the battery from being overcharged.
The controller can determine night time from the solar module current. The condition ”night” is shown instead of the
actual module current. Another feature of the controller recognises whether a solar module has been connected or not
(I_mod = no modul).
I_accu is the balance of the charging and discharging currents. As long as the charging current is
higher than the discharging current, the value is positive, in the opposite case, it is negative.
Messages such as ”over-temperature”, ”load current”, ”low voltage” and ”high voltage” are warning
.The controller automatically takes steps in order to protect itself, the battery and the loads. After the error condition
ceases to exist, the controller resumes normal function. See Malfunctions And Errors(chapter 9, page 15)
Charge regulator status such as ”float charge”, ”boost charge” and ”equal charge” indicate which
stage of charging is in process. After a certain period of time of operating in the ”boost” and ”equal” charging modes, the
float charge mode is resumed. ”Deep protection” (meaning the controller has decided to disconnect the loads to protect
the battery from deep discharge) is also indicated on the display, even when automatic load disconnection has been de-
activated.
System configuration settings such as the selection of the electrolyte ” electrolyte liqui” for liquid
batteries or ” electrolyte fixed” for sealed batteries as well as manual load disconnection ”manu discon auto”, ”manu
discon off” or ”manu discon on” are indicated.
Some windows are monitoring several values. You can stop scrolling and fix your display in one of the following windows
to get an overview of your system.
This window monitors the battery voltage (13,7V) as well as the INput charge current (IN04) and the
OUTput discharge current (OUT12). The explanation of tension (voltage [V]), IN and OUT waste too much space to
allows a accurate current monitoring.
System-Manager TAROM | 716148
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V09_45A
