Appendix A: Network Terminology - ProFire PF3100 Information Manual

• Do not drill holes in or otherwise modify the EPX enclosure. Any such modifications will
compromise suitability for Class I, Div 1/Zone 1.
• The flame rods are not intended to be installed and mounted in a Class I, Division 1
or Division 2 hazardous location. Routing and installation of the flame rods shall be in
accordance with the Canadian Electrical Code or National Electrical Code as per local
requirements.
• Unused 3/4" NPT conduit ports must be plugged using appropriately rated pipe plugs in
order to maintain the Div 1 / Zone 1 rating of the enclosure. Refer to the Canadian Electrical
Code or National Electrical Code as applicable.

APPENDIX A: NETWORK TERMINOLOGY

The following terms are used to explain the network operations:
Interface Class Card - Any PF3100 card that provides a control or monitoring interface to a user or remote
PLC. Examples include the User Interface card and the Modbus card.
Controller Class Card - Any PF3100 card that provides safety control for a specific application. Examples
include the BMS Controller card and Combustor Controller card.
Network Class Card - Any PF3100 card that provides multiple network ports so that additional cards may
be connected together on the PFRN network. Examples include the Network Switch card, Modbus card,
and the BMS Controller card.
IO Class Card - Any PF3100 card that provides input and output terminals for control and monitoring.
Examples include the Ion Pilot card and the Thermocouple card.
PFRN - Profire Reliability Network. A proprietary safety network developed by Profire which can also be
used to distribute power. The PFRN has two sub-networks: the Controller Network and the IO Network.
Controller Network - A sub-network of PFRN Interface class and Controller class cards talk to each other
on this network. There is usually only one of these networks in an installation.
IO Network - A sub-network of PFRN IO class card talk to a single Controller class card. There is one of
these networks for each Controller class card in the system.
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