Can I program one of the on board relays to toggle on either a Trouble or Supervisory?
No; programming one of the On Board Relays as General Trouble Output (62) cannot be combined with any other Output Function. Therefore, Output programming for the relay should be as follows: A = (62); B = (00); C = (00); D = (00).
Note: When the On Board Relay is programmed as General Trouble Output (62), the Relay will be energized until a trouble happens. So, when the panel is in a System Normal State, the NC contact of the relay will be open and the NO will be shorted.
*NOTE - The FPD-7024 added a third on board relay.