Flexball Italiana S.r.l.
91
19.3. Commissioning of the actuators with Neutral Relay option
The mechanical actuator can provide a no contact signal when the gearbox is in neutral. This signal, if
properly used in the engine starter safety chain, allows the start of the propulsion engine only in case the
gearbox is in neutral position.
The neutral signal is given through a two pole wire, as depicted here below. The neutral relay is normally open
and it closes only in case the gearbox is in neutral and the actuator is properly supplied (if the actuator doesn’t
receive the power supply the relay is switched off and its contact is open).
The block diagram here below shows the safety chain:
Specific neutral cable is described at section 6.3
To be noticed:
•
the cable presents n. 3 wires: black 1, black 2 and yellow/green. In the application do not use the
yellow/green wire
•
maximum current which can be commutated by the neutral relay is 10 A
•
in case the actuator is not supplied, you cannot start the engine unless you provide a by-pass
electrical circuit for emergency situations
•
actuator with mechanical interface is just giving the information that itself is in neutral position. The
neutral position on the gearbox is to be considered valid only if the push-pull cable is mounted
correctly.
Neutral relay option cables are depicted in sections 6.3.3 and 6.3.4. Installation schemes are at sections
10.2.5 and 10.2.6.
Chiave accensione
Engine ignition key
Relay attivazione
motorino avviamento motore
Electrical engine
starter activation circuit
Batteria
Battery
+
-
R
+
-
Motorino avviamento
Starter
Funzione
Function
Numero filo
Wire number
M. Avanti - Segnale
Forward (FWD) - Signal
1
M. Indietro - Segnale
Reverse (REV) - Signal
2
Relè di neutro
Neutral relay
3
M. Avanti - GND
Forward (FWD) - GND
4
Relè di neutro
Neutral relay
5
M. Indietro - GND
Reverse (REV) - GND
6
Black 1
Neutral relay
Black 2
Common
Length
Code
L=3 m
3500.36-03000
L=5 m
3500.36-05000
L=7 m
3500.36-07000
