Velleman-projects K6714-16 Assembly instructions Manuel d'utilisateur télécharger pdf (Page 12)

Tips at malfunctions

18. Remedies in the case of malfunction caused by the relays

If the relays are used to switch alternating voltage, it may be necessary to

suppress them.

1. Suppressing resistive loads (Lamp, resistor,…) :

2. Suppressing inductive loads (Transformer, motor,…) :

3. When above solutions fail :

In this last case an independently feeded DC-relay is used, wich is installed

as close to the load as possible.

220V - 240V

Siemens SIOV

S14K275

110V - 125V

Siemens SIOV

S14K150

 Pay attention to the diode witch is fit ANTI-parallel with the coil, its

cathode connected to the plus side, its anode connected to the minus

side! This relay MUST be feeded by a separate power supply. The

VDR must be suited for the voltage to be switched.

Fig. 3.3

Fig. 3.2

Fig. 3.1

H67146(16)IP'1_rev1.pub

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Velleman-projects K6714-16 Assembly instructions Manuel d'utilisateur Page 12