KEPCO RKW 1500W Series Operator Manual - Manual (Page 6)

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228-1503 REV 4 060110
FIGURE 1. MECHANICAL OUTLINE DRAWING OF THE RKW 1500W POWER SUPPLY
3. OPTICAL COUPLER OUTPUT ALARM CIRCUIT
When the output voltage falls to less than about 80 percent of programmed output voltage the
alarm is activated (a high logic level will appear at the ±PF terminals). The default state of the
alarm is logic low. The sink current is 50mA maximum, the maximum collector to emitter satura-
tion voltage is 0.40 Volts, and the collector to emitter voltage is 40 volts maximum. The PF ter-
minals are isolated from the AC and DC output input terminals. Insulation resistance between
the PF terminals and the AC input terminals is the same as the insulation resistance between
the input and output. Insulation resistance between the PF terminals and the output terminals is
the same as the insulation resistance between the output and ground.