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ADJUSTMENT
Gentherm Global Power Technologi
es
Page 45
8.2
ADJUSTMENT OF CONVERTER/LIMITER
A C/L is available for use with the model P-5100 TEG. This text describes how to adjust the
C/L, if applicable.
8.2.1
Output Voltage Adjustment
The C/L is factory set at either 14.1 V (Model P-5100-12) or 28.0 V (Model P-5100-24). If
this requires adjusting use the following procedure.
Follow these steps to adjust the C/L output voltage:
1.
Disconnect the customer load from the TEG, terminals 7 (+) and 8 (-) of TB-1.
2.
Connect a voltmeter between terminals 7 and 8 of TB-1 and measure the output
voltage.
3.
Adjust the output voltage by turning the output voltage adjustment pot shown in
Figure 7.
8.2.2
Voltage Sensing Relay (VSR) Adjustment
The VSR provides a set of contacts to indicate an alarm condition when the output voltage
drops below a pre-set minimum. It is factory set at 23.0V and 28.5V (Model P-5100-24) or
11.5V and 14.3V (Model P-5100-12). The VSR is rated for 2A at 30V DC and will take up to
14 AWG stripped wire. The Remote VSR Terminal Option will allow for a wire size of 10AWG
with a ring or fork terminal termination.
To connect to the VSR outputs route the wire in through the hole provided in the bottom of
the TEG cabinet and follow the main wiring harness around the loop and into the lower hole
of the Electronics enclosure door. Continue to route the wires along the bottom of the
electronics enclosure and then connect to the VSR terminals on the left side of the limiter
board. Refer to Figure 7 for the connector pinout.
NOTE:
Due to the integrated blocking diode, set the no-load trip-point 0.5V higher
than the required trip-point. For example, if an alarm is required when the
output voltage drops to 23.0V at the customer load terminals. When making
the point adjustment at no load conditions set it to trip at 23.5V, as measured
at the customer load terminals. Under load conditions when the voltage drops
to 23.0 V, as measured at the customer load terminals, the relay will trip.
Follow these steps to adjust the VSR set point:
1.
Remove both the positive and negative wires from the customer load terminals.
2.
Connect a DC voltmeter to the customer load terminals.
3.
Set the output voltage to the desired alarm point value.
4.
Place an ohmmeter between the common and normally open contact of the VSR.
5.
Turn the VSR adjustment pot until the contacts open (the normally open contacts are
closed when output voltage is above VSR trip-point).