Steca PR 2020 IP65, Руководство по эксплуатации

Страница: 11 / 24

11 718.573 | 11.27
4.2.8. Warning deep discharge protection
As an early warning, the SOC bar or the voltage value
flashes. The face still looks friendly!
4.2.9. Load disconnection
If the deep discharging protection has been activated the
SOC bar or the voltage value flashes. The face looks sad
until the reconnection setpoint is reached.
5. Function Overview
This charging regulator has basic functions for specifying the state of charge (SOC),
charging specification and deep discharge protection that are described in the following
section. Additional functions that can be activated such as the settings, night light func-
tion, auto-test, presetting and serial number query are explained under the correspond-
ing menu items in chapter 6.
5.1. SOC Calculation
During operation, the regulator monitors various parameters (U; I) of the battery and
from that calculates the battery’s charge level (SOC = state of charge). The state of
charge is the energy level still available in the battery. Modifications in the system, e.g.
the battery’s aging process are automatically taken into consideration by the system’s
continuous learning process.
Using this SOC information, you always have an accurate overview on the actual battery
level. Using the SOC, the regulator also controls the selection of the charging procedure
and the deep discharging protection in order to ideally maintain the battery. If one of
the parameters cannot be recorded because for example, a consumer or charging source
is directly connected to the battery, the SOC calculation is invalid. The regulator can then
be set to the more simplified voltage-guided control, see chapter 6.2.
The SOC calculation is restarted each time the regulator is reinstalled.
5.2. PWM Charge Control
The regulator applies a constant voltage charging to the battery. The entire available
electricity provided by the charging source is used for charging the battery until the final
voltage is reached. A pulse width modulator (PWM) regulates the charging current by
briefly closing the module input (shunt charge controller) in the charge control area.
Depending on the actual battery level, various charging procedures, float charging,
boost charging and equalization charging are automatically performed. In doing so, the
settings for the battery and control type are factored in. The final charging voltage is
temperature compensated. Every 30 days a test is automatically performed to determine
if an equalization charging must be carried out.