GAI-Tronics 12576-501(x) ADVANCE Rack-Mount Access Panel with LCD Display - Manual (Page 5)

Pub. 42004-728L2D
Model 12576-501(x) ADVANCE Rack-Mount Access Panel with LCD Display Page: 5 of 17
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LED Driver Outputs
The DB-25 connector on the rear panel provides 24 LED driver outputs for powering external indicators,
mechanical relays, etc. These drivers are in parallel with the front panel LED indicators on the keypad
switch. Therefore, when the front panel LED is on, the corresponding output pin is on. The pin out of the
connector correlates to the LED number, e.g. pin 1 is for LED 1, pin 2 is LED 2, etc. Pin 25 is +5 V dc to
power the remote indicators or relays.
Figure 3. DB-25 Pin Out
Figure 4. Typical Connection Diagram