User manual

ADCP-75-154 • Issue 3 • August 2006
Page 10
© 2006, ADC Telecommunications, Inc.
Figure 10. PDU Alarm Logic
2.3.3 Setting the DIP Switch on the PDU
The PDU has a DIP switch to disconnect unused MHU outputs (see Figure 11). For the MHU
outputs that are used, the DIP switch must be in the “down” position. Unused outputs must be
disconnected by setting the DIP switch to “ON”.
Figure 11. Example of DIP Switch Setting on the PDU
(Switches 1, 2, 3, and 6 Set to “Down” to Indicate Use of MHU Ports 1, 2, 3, and 6)
DC
INPUT
16773-A
ALARM
RELAY
PDU
ALARM
LOGIC
OUTPUTS
COM
(COMMON)
NO
(NORMALLY
OPEN)
NC
(NORMALLY
CLOSED)
POWER DISTRIBUTION UNIT