Vertiv
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Liebert
®
PPC
™
User Manual | Rev. 6 | 03/18 |
30
1.3.7
Adapter Board
The Adapter Board (AB) provides customer interface to the Liebert PPC monitoring systems for units without
Low-Voltage Junction Box. Connections are made to terminal strip TB1 for Remote Emergency Power Off
(REPO) switches, summary alarm contacts and customer alarms (Liebert Power Monitor Panel with Velocity
Protocol [VPMP]; see
4.3 - Power Monitor Panel
). The AB is mounted on top of the monitoring enclosure
located inside the top right corner of the unit.
A field-selectable switch (S1) on the AB allows the VPMP to be set up for either Manual or Auto restart. The
factory default setting is Manual.
•
Manual Restart allows for an orderly, supervised startup after power failure. The control circuit automatically energizes
the shunt trip mechanism of the main input breaker upon sensing output voltage failure.
•
Auto Restart deactivates the Manual Restart function. In Auto Restart mode, the main input breaker does not trip due to
power failure and the unit will restart when power is restored.
If two Liebert LDMF systems are provided, the summary alarm contacts from each Liebert LDMF are tied to the
Customer Summary Alarm on the adapter board.
Summary of Contents for Liebert PPC
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