Figure 8 220 Watt L/C General Assembly - Gentherm 5220 Operating Manual

Blocking Diode: Reverse current protection is standard on the 220 W Limiter. A diode
in series with the positive output prevents current from flowing back through the convert-
er when the generator is shut off.
Voltage Sensing Relay: Voltage Sensing Relay (VSR) provides a set of contacts to
indicate an alarm condition when the output voltage drops below a preset minimum.
Low voltages, due to overloads, lack of fuel or a faulty generator, are detected by a volt-
age sensing circuit incorporated into the voltage limiter. When a low voltage condition
is detected, the Voltage Sensing Relay (VSR) with connections NC(normally closed),
NO(normally open) and COM (common) can be used to trigger an alarm or other pro-
cesses. When the generator is above the trip voltage the connection between NO and
COM is closed and the connection between NC and COM is open. If the generator is
below the trip voltage then the connection between NO and COM is open and the con-
nections between NC and COM is closed. The trip voltage is adjusted by the pot labeled
VSR adjust on the VSR board as shown if Figure 7.
Volt and Amp Meters: The volt and amp meters provide indication of voltage and cur-
rent respectively, output by the L/C.
Power Resistor: When no load, or a very small load, is connected the TEG has more
power available than needed by the load. This excess power is directed into a power
resistor by the voltage limiter.
Gentherm Global Power Technologies
5220

Figure 8 220 Watt L/C General Assembly

28142 Rev. 14
4-8