Crown MARCO-TECH 5000VZ - Protection Signal Integration; OV Signal Generation; DC;LF Shutdown Trigger; DC;LF LED Indication

+ 15V
R324
D1 TIMER/STSY1
+ 15V
+ 15V
R771
3.3*0
CHANNEL 2
O VER-VOLT/
THERM
-vr
U707C
LM339
Notes
Over-Voltage and Thermal Switch
¡nformation combines to produce the
"OV" signal driving U211C. The
remote standby (RS) function (from the
P.I.P. module) also ties ¡nto the signal
pathlabelledTIMER/STBY. They are
shown together since, schematically,
they share a common control line to the
C120 Soft-start and PWR (relay)
control circuitry.
Over-Voltage and Thermal
Switch information combines
to produce the "OV" signal
driving U211C. The r
If U109C/D sense a DC (or LF) level, ¡t will output a low which will,
through D102, discharge C120 and initiate power supply shutdown. A
low will also cause the DC/LF red LED on the main module to light.
MA-5000VZ - 25