Power Connector; Power Status Leds - Hatteras HN4000 Hardware Installation Manual

3-2
Power Connector and Power LEDs

3.1.1 Power Connector

The HN4000 can be powered from one or two ‐48 VDC power sources. If two power sources
are used, the device will continue to operate normally should one of the sources fail.
The power connector has four pins ‐ two pins for each of the two ‐48 VDC power sources that
can be connected to the device. As shown in Figure 3‐2 on page
right):
❒ Pin 1 ‐ "A" power source negative (‐) connection
❒
Pin 2 ‐ "A" power source positive (+) connection
❒
Pin 3 ‐ "B" power source negative (‐) connection
❒
Pin 4 ‐ "B" power source positive (+) connection

3.1.2 Power Status LEDs

There are two power status LEDs: "A" and "B."
❒
"A" LED ‐ On (steady green) when ‐48 VDC is detected at the "A" connections
(pins 1 and 2)
❒
"B" LED ‐ On (steady green) when ‐48 VDC is detected at the "B" connections
(pins 3 and 4)
Note that at least one of the power status LEDs must be on for the device to be operational.
Both power status LEDs will be on when two operational power sources power are connected.
HN4000 Hardware Installation Guide
3‐1, the pins are (from left to
920550-5020 Rev 14