Switch Polarization Print HPP4 │ version 2 – 2019
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In addition, each relay is equipped with a red status LED, each with its own control resistor. These are
easy to find on the print:
Relay K1 is protected by extinguishing diode D1. The status LED of K1 is indicated by LED1 and has a
resistor R1.
K1 has the screw terminals X2 and X3
K2 has the screw terminals X4 and X5
K3 has the screw terminals X6 and X7
K4 has the screw terminals X8 and X9
X1 is the connection terminal of the supply voltage. On the left you will see a 1 printed and on the right of
the terminal a 5. The left connection 1 is the V +, the 4 consecutive terminals 2, 3, 4 and 5 are respectively
the V- from K1 to K4. You then connect this to the pin outputs of the OC32.
