11
Warning: Never remove the cover of this unit while it is connected to the power line.
Refer to the drawing of the terminal block for the proper location of the primary wiring.
The 120 position will allow the power supply to work between 90 to 135 Vac.
The 240 position will allow the power supply to work between 185 to 260 Vac.
High Voltage Section
The High voltage section of the ALS-600SPS uses high current switching circuit with
superior filtering to produce a high current DC voltage. This line is protected by F1 on
the printed circuit board.
Primary Circuit
A 10 ohm resistor limits the line current during the start-up time to lower the stress on the
power supply components. When the –14 volt control line approaches full voltage a
relay bypasses the 10 ohm resistor and applies full line voltage to the primary. The 10
ohm resistor is protected from supply shorts by a 2 amp slow blow fuse during start-up.
