1.3.2 Distribution Board - Issues 1 & 2
The lower 4-way connector provides a 24V and 0V connection. The voltages are always present
at these terminals whilst FS2 is intact. The remaining two connections must not be used. The 24V
supply is designed for use by Status Scientific Controls when powering external equipment. The
amount of power available from this connector must be determined for each installation based
upon the system configuration.
Pins 1 & 2, pins 3 & 4 and pins 5 & 6 of the 12 Way Connector provides three external outputs
under software control. Outputs 1 and 2 are designated as Sounder and Beacon control outputs
respectively (consult section 8.1 for sounder and beacon installation details) and Output 3 is
spare. Each output is capable of switching a maximum of 200mA. Fuse protection is provided by
FS3 situated on the Power Supply (refer to section 1.5).
It should be noted that the external outputs are not switched via voltage free contacts. 24V
is always present at pins 2, 4 and 6 and the 0V line is switched via an open-collector
transistor.
Note: In certain circumstances outputs 1, 2, and 3 can be configured as Inputs. Contact Status
Scientific for further information.
1.3.3 Distribution Board - Issues 3 and above
The lower 4-way connector provides two 24V screw terminals, and two 0V screw terminals. The
voltages are always present at these terminals whilst FS3 is intact. This supply is taken from the
24V supply of the system and is used by Status Scientific Controls when powering external
equipment. The amount of power available from this connector must be determined for each
installation based upon the system configuration.
Pins 1 & 2 and pins 3 & 4 of the 12 Way Connector provides two external outputs under software
control. Output 1 is designated as the sounder output, whilst Output 2 is designated as the
Beacon output. Each output is capable of switching a maximum of 200mA. Fuse protection is
provided by FS3 situated on the Power Supply (refer to section 1.5).
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