Earth To Chassis Connection; Battery Power Supply; Thermal Protection - Optimus AXD-30 Operating Instruction

6.14.

Earth to chassis connection

In all installations it is very important that there is
one single point of connection between the signal
earth connection and the mains supply earth
contact. The OPTIMUS units have a "shucko"-type
connector, which enables
connected to the mains earth connection.
If the installation comprises
equipment unit, their chassis will probably be
joined, either by means of the earth terminal of the
mains connection, or because they will be fitted in a
metal cabinet.
If the earth connections are joined by the signal
circuits, it is advisable to remove the jumper
between the earth connection and the chassis from
all the units except one, thereby avoiding noises
caused by the loops of the earth connections circuit
(see Figure 22).
6.15.

Battery power supply

This supply allows these units to be used in security installations, connecting a 24V DC battery.
The "0" / "I" switch does not interrupt the battery power supply.
The battery fuse is internal, and its value varies according to the model.
Model
Battery fuse

7. Thermal protection

The AXD-60, AXD-120 and AXD-240 models have thermal protection which limits the internal temperature to 95°C.
The AXD-120 and AXD-240 also have forced ventilation by means of an internal ventilator
AXD-30/60/120/240 v1.3
AXD-30, AXD-60, AXD-120, AXD-240
the chassis to be
more than one
AXD-30 AXD-60
6.3 A
AXD-120
8 A 15 A
Figure 22
AXD-240
20 A
10