Paradigm Architectural Control Processor Mk2 DIN (P-ACP-D) displays 'Power Supply Error' on boot

Issue

When a P-ACP-D (Paradigm Architectural Control Processor Mk2 DIN) is energized via PoE (Power over Ethernet) it displays a 'Power Supply Error' and will not continue booting, as shown in the picture below. The rest of the text reads "For Power over Ethernet, this devices requires an 802.3at PoE+ supply. Upgrade the supply or provide DC input."

Explanation of Issue & Solution

The P-ACP-D requires 802.3at PoE+, so this error will display if it's plugged into either (A) a regular PoE (802.3af) port or (B) a PoE+ port that requires additional configuration before the switch will provide PoE+. For the former, a different port or switch that provides PoE+ must be used, or 24-48VDC external power supply can be used.

Regarding the latter, some network switches (such as the Cisco SG350, CBS350 or Catalyst 1300 which ETC has provided on jobs for many years) have PoE+ ports which the P-ACP-D will work without any configuration. Other switches -- typically higher enterprise class switches such as a Catalyst 3650, Catalyst 2960x, or Catalyst 9200 -- use LLDP to determine what class of PoE a device requires beyond standard PoE. Currently the P-ACP-D does not have LLDP implemented to properly converse with the switch. Those switches require additional configuration to remove the requirement of LLDP negotiation and automatically allocate 30W to the port so the P-ACP-D can fully boot. This may be called different things between manufacturers and/or models, but for example many Cisco switches require configuring 2-event Classification. It is incumbent on the person(s) responsible for the switch hardware to research how this is done for their specific make and model.

A future Paradigm update may include changes to LLDP that allow it to properly negotiate its power requirements without additional intervention. There is no ETA on when/if this change will be made.