Instructions

CONTROLLINO Instruction Manual Page 23 (35)
LED "OVL"
The LED labelled "OVL" signals a thermal overload of the CONTROLLINO PLC. For the CONTROL-
LINO MINI, two temperature sensors are installed. One temperature sensor is placed on the con-
trol board and one on the relay board. If the temperature exceeds 80°C the red "OVL" LED will
turn on, indicating a thermal overload.
For the CONTROLLINO MAXI the arrangement of the sensors and their function is the same like
the CONTROLLINO MINI. However, with the MAXI the "Overload" signal will also be available at
the microcontroller-pin PE7 (Arduino Pin 9). Therefore, you can use this signal in your user pro-
gram to trigger corresponding actions on how the CONTROLLINO should behave at overload, like
a beep or send a message via Ethernet.
At the CONTROLLINO MEGA additional to the thermal control, the "Half-Bridge" driver ("D0" to
"D11") also has a FAULT signal which is also connected to the CONTROLLINO general overload
signal. If an error occurs (such as short circuit or overload) the "OVL" LED lights up and on PE7
(=Arduino pin 9) the error signal is available (just like with the MAXI). Internal protection functions
are provided for undervoltage, charge pump faults, overcurrent, short circuits and overtempera-
ture.
Pinheader Connector (X1 to X…)
Through the pinheader connectors numbered "X1" to "X…" you can connect "directly" to the mi-
crocontroller. Theses contacts are like on the ARDUINO board at a 5V level. You can use these
pins freely to connect additional modules and electronics. Please mind that the pinheader pins
will change their state together with the relays, digital inputs and outputs with the same labelling
but on 5V level. These pins are ESD protected.
INFO: You can download a "PINOUT-table" on http://www.controllino.biz. In these files, you can
easily see all internal wiring indications between pinheader connector and the microcontroller.