RFID / PIN

Screenshot cFos Charging Manager Documentation - RFID / PIN

For each charging station, you can also enter users and create charging rules. Furthermore, users can also enter charging rules for themselves.

To enter new users, you must enter the administrator password. The corresponding dialogue is located below the entry of RFID/PIN. Currently you can only enter PINs. Click "Add user" to create a new user. The system automatically generates a new PIN for the user. You can also assign a name. You can enter further PINs for this user in the green field (save by clicking on the + sign). The user can also do this himself without a password. Click on the cross at the top right of the PIN to delete it.

Now you can assign users to each EVSE by editing the corresponding EVSE in the configuration dialogue and entering one of the user's PINs. The PIN determines the user. However, all PINs entered by the user can enable charging.

Charging rules

Every few seconds, the Charging Manager evaluates the charging rules assigned to the EVSE and those of the users stored for this EVSE. Each set of charging rules for the EVSE and for the user is searched in the order entered. As soon as a charging rule applies, it is applied and all subsequent rules are ignored. This happens for the rule set for the EVSE and the rule set for the user. If both a EVSE rule and a user rule apply, the Charging Manager takes the smaller charging power.

For each rule, you can specify the days of the week for which it should apply.
There are 3 types of rules:

TimeThe rule applies from the set start time to the set end time
InputThe rule applies when a digital input is set or deleted
SolarThe rule applies when the solar power (the sum of all producer meters) is above a certain threshold

Each rule contains a "Power" value and a mode.
The meaning of this "Power" value can be switched depending on the mode, in

AbsoluteThe value is considered as absolute wattage for charging
In PercentThe value is the percentage of the maximum power of the EVSE (here you would possibly go to percentage of solar power in a later software update)
Production Power AbsoluteThe value is ignored and the total solar power is taken as the charging power
Production Power in PercentThe value indicates a percentage of the solar power
Production minus PowerCharging power is equal to solar power minus fixed value
Surplus chargingThe documentation for this loading rule can be found on this page.

The Charging Manager interprets the result of the evaluation as a "wish" of the charging station for a certain charging power. This is distributed to the charging vehicles according to the available charging power.

You can e.g. with this system allow charging only within certain times:
Rule 1: Time: From 8:00 to 12:00 "In Percent" 100
Rule 2: Time: From 0:00 to 23:59 "Absolute" 0

Solar controlled charging

Rule 1: Solar, 8,5 A (8500 mA) solar power, "Production minus Power" 1500, so charge when at least 8,5 A (8500 mA) solar power is available, but always leave 1,5 A (1500 mA) for the rest of the household.

Screenshot cFos Charging Manager Documentation - Surplus charging

Rule 2: Solar, Starting current limit: 6,5 A (6500 mA), "Solar Surplus", this activates surplus charging with the available surplus from an average feed-in of 6,5 A.