9 Manual Number 9018558 • Revision H, April 13, 2021
Pin Assignment Information
DC Input
– (24-32 VDC). Connect pin A to the aircraft positive 28 VDC bus
(7.5 amp circuit breaker recommended)
DC Return – Connect pin B to input power return or aircraft ground. Equivalent to pin D
DC Output – Connect pin C as the positive output voltage (adjustable)
DC Return – Connect pin D to output return or aircraft ground. Equivalent to pin B
Enable – 6430120-1: pin E to remain open/unconnected
6430120-2: pin E to be grounded to enable power output
(via switch or other means. See section 4.2.1 and figure 3.3 for related details)
Figure 3.1
Table 3.1
Pinout View of Unit Connector
Connector Pinout
Harness Verification
With the TC120 DC/DC Power Converter disconnected, activate the aircraft power bus that
supplies the unit and use a multi-meter to measure and verify the power, ground, and
enable voltages on the appropriate pins within the mating harness.
Output voltage Adjustment
The output voltage can be set to any value between 5 and 18VDC.
NOTE:
The default output voltage is initially set to approximately 13.8V at the factory.
The output voltage may be adjusted while the TC120 DC/DC Power Converter is
connected to the mating harness and aircraft power, but disconnected from the output load.
Use a multi-meter at the load end of the harness to measure output voltage.
The adjustment trimmer may be accessed by removing the 4-40 screw near the label as
shown in Figure 3.4. After removing the screw, a flat blade screwdriver (2mm) will fit into
the hole and the trimmer. Turn the trimmer carefully either clockwise to increase voltage or
counter-clockwise to decrease voltage. Replace the 4-40 screw after adjustment is
complete.
Connector Pinout
A
DC Input
B
DC Return
C
DC Output
D
DC Return
E
Enable
A
D
B
E
C
Содержание 6430120-1
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