20
In cases when sensor output signal is negative, an additional relay has to be installed to
convert negative signal to positive.
Figure 12. Inverting relay connection
Immobilizer relay
When connected as shown below, FM3620 disables engine starter when output is OFF.
More details about relays can be found below.
Figure 13. Immobilizer relay connection
Relays
An ordinary automotive relay is used to invert input signal or to immobilize engine starter.
Note, that they are available as 12 V or 24 V.
Figure 14. Automotive relay pinout
