Operation; Activation; Deactivation; Controlled Deactivation - Littelfuse 08096500 Series Manual

6 - OPERATION

Connecting the battery switch as in the original diagram indicated in Pict. 1 gives the following operations:

6.1 - Activation

It is possible to activate the battery switch by turning the Key into the "ON" position and then momentarily
pressing the button P into the "BATTERY ON" position.
0-(ON)
From this moment it is possible to use all the loads, and therefore to proceed with starting the engine.
In the event that the battery voltage is lower than the threshold voltage the battery switch will not activate.
In the event that the Key is not placed in the "ON" position, temporary activations of the battery switch
are possible for several seconds followed by automatic deactivation.

6.2 - Deactivation

With the battery switch activated it is possible to cause manual deactivation or automatic deactivation without
operator intervention under the following conditions:

6.2.1 - Controlled deactivation

Moving and leaving the Key in the "OFF" position, after a delay of 55 seconds the device will deactivate.
This delay has been inserted to allow the shut down of microprocessor systems and to allow the engines
of vehicles equipped with switch-off systems that must retain a power supply in order to complete their
operation (electrical switching off).
It is possible to eliminate this function; for details, refer to paragraph 8.3.2.
For vehicles with pedal switch-off (or without key) the engine MUST be switched off during
the 55 seconds that run from moving the ignition Key to the OFF position and relative isolation of
the batteries.

6.2.2 - Emergency deactivation

Moving P temporarily into the "BATTERY OFF" position or P
0-(OFF)1
the engine is running, will cause deactivation with immediate opening of the auxiliary contact of the main
contacts.
Improper use of the emergency buttons can cause premature deterioration of the product.
Therefore, these buttons must only be used in the event of actual danger.

6.2.3 - Automatic deactivation for drop in voltage

In the event that the system voltage drops below the 9V threshold (nominal voltage 12V) or 22V (24V) for a
period greater than 1 second due to short-circuit or prolonged overload, the battery switch automatically
deactivates itself without operator intervention.
This function cannot be used to avoid slow battery discharge or to protect loads normally protected by fuses
(e.g. lights) as the intervention threshold has been deliberately targeted at signifi cant system voltage drops.
In order to be able to reactivate the device after automatic deactivation it is necessary to fi nd and eliminate
the cause of the short-circuit or overload.
It is possible to exclude this function for the use of devices having signifi cant current absorption (e.g. tail hoist);
for details, refer to paragraph 8.3.3.
into the "OFF" position, even when
0-(OFF)2
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