120 20191-100a
Paragon-III User Manual
14
3.1.6 Power Supply Modules
Two switched mode pulse width modulated T-809 power supply modules are
used but not connected in parallel.
Both power supply units have ON-OFF control and remote sensing via a rear
mounted DE-9 connector, and an output voltage adjust potentiometer (13.5
to 18 VDC).
Their circuit protection features are:
•
Inrush current limiting
•
Over-current (short-circuit)
-
37 to 48A constant current limiting
-
Reset = auto recovery
•
Over-voltage
-
18 to 21 VDC = shutdown
-
Reset = Power OFF and ON
•
Over-temperature
-
shutdown of output voltage
-
auto recovery with temperature reduction
-
temperature sensed on transistors and diodes
Front Panel Indications
Power Switch
Illuminates when the unit is connected to AC power and
voltage is available
ON LED
- Lights bright green when voltage output is normal
- Lights faint green when module has entered over-
current mode
- Green LED is OFF, but power switch is ON indicates
module has shut down due to over-temperature or over-
voltage conditions.
Figure 12 - T-809 Power Supply Module
®
Power Supply
Power
On
