Emerson Process Management IM-106-910Xi instruction manual Adding an AC Relay Board to

Instruction Manual

IM-106-910Xi, Original Issue November 2010

Xi Advanced Electronics

8.Reinstall wiring for Relay In. See Figure 6-7 for wiring diagram.

9.Swing the cover up in place and tighten the four screws.

Installing and configuring an AC Relay Board for the Flame Status Interlock function will dedicate alarm output 2 for this function. Once configured for Flame Status Interlock, the software will override any previous alarm assignments for alarm output 2 and not allow it to be used for any other function.

Adding an AC Relay Board to the Xi

1.Loosen the four screws securing the Xi cover. The screws are captive and do not need to be completely removed.

2.Swing the Xi cover down to expose the inner components.

3.Slide the I/O Board part way out of the Xi enclosure.

4.Make the following jumper and switch settings:

a.Set SW4, Position 4 "ON" and all other positions "OFF".

b.Move the jumpers for both JP1 and JP2 to pins 1 and 2.

5.The I/O Board must be relocated to the right-most slot inside the Xi enclosure. If there is enough service loop on the existing wiring, slide the I/O Board completely out of the enclosure and re-install it in the right-most slot. Ensure the board is correctly aligned within the slots. See Figure 6-8 for the correct location of the I/O Board.

NOTES

An AC Relay Board can only be added to single channel Xi, i.e. only one I/O Board controlling one O2 Probe.

The Flame Status Interlock function requires a contact closure on the digital input of the I/O Board to indicate a flame is present. When properly connected and configured, AC power will be applied to the transmitter only when the flame is present.

6.If there is not sufficient wiring, tag and disconnect all wiring, and relocate the board. Then reinstall the wiring.

7.Partially slide the AC Relay Board into the left-most slot of the Xi enclosure. The component side of the AC Relay board will be to the right with the fuse holder at the top. Ensure the board is correctly aligned within the slots in the enclosure. See Figure 6-8 for the correct location of the AC Relay Board.

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