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SmartCharger Operating Instructions / MPC6.1 Last updated: 02.07.2020 Page 10 of 16
5. Operating modes
The chargers are designed for the following usage scenarios, according to the operating mode
selected. If the device is connected to the mains, the device will enter the last selected active
operating mode when started.
Note: The charger has intelligent temperature regulation. If the device temperature exceeds a pre-defined
value, the device's output is reduced.
5.1. Cable compensation
Note: Depending on any customer-specific delivery specifications, the parameters described may differ
or some modes may not be available. If you have any questions regarding the parameterization of your
device, please contact Deutronic Elektronik GmbH or one of our worldwide service centers.
Cable compensation mode is used to measure or compensate the resistance value of the
connected charging cables. This is necessary in order to compensate the voltage drop over the
charging cables during battery charging. Cable compensation only starts if the corresponding
operating mode is selected and if a short-circuit is detected at the start of compensation. This is
done by directly clamping the current clips together. The whole process is described in Section 4.2.
Note: If the charging cable is changed, cable compensation must always be carried out. Even if the
cable is exchanged for a cable of the same type, cable compensation must be carried out.
5.2. Charging Pb LTC / Charging Li / LFP LTC
Note: Depending on any customer-specific delivery specifications, the parameters described may differ
or some modes may not be available. If you have any questions regarding the parameterization of your
device, please contact Deutronic Elektronik GmbH or one of our worldwide service centers.
The XX-LTC operating mode is used for long-term charging and monitoring of vehicles in the
showroom with lead (charging Pb LTC) and Li/LFP (charging Li LTC) starter batteries. In support
mode, the device supplies the vehicle's electric loads until it reaches its power limit and any charge
deficiencies in the vehicle battery are subsequently compensated. The charging process
is interrupted at calculated intervals. During these monitoring phases, the battery is analyzed and
the parameters for the next charging interval are calculated. A full charge is load-dependent and
therefore cannot be guaranteed.
If no battery is connected to the device, load detection is active. This is signaled by LED4 flashing.
If the device's charging clips are connected to a battery that has a voltage within the pre-defined
range (Pb: 10.0 V – 13.7 V; Li: 11.0 V – 13.7 V), the charging process is started after the switch-on
delay. Battery voltages outside the pre-defined ranges are either indicated as "Battery voltage
too low" (status LED flashes red) or "Battery full" (status LED continues to indicate the selected
mode, and the green LED2 also lights up). Once the charging cycle is complete, monitoring will
begin. The battery status is indicated during monitoring. The parameters of the subsequent
charging cycle are calculated according to the duration of a monitoring phase. A charging process
in progress is signaled by a running light sequence of LEDs 2-4.
