Honeywell HPM, Service

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6 Removal and Replacement
6.17 I/O Link Extender Optical Coupler Module Replacement
432 HPM High-Performance Process Manager Service R688
Honeywell December 2020
6.17 I/O Link Extender Optical Coupler Module Replacement
Introduction
Before removing a defective fiber Optical Coupler module, it is necessary to remove its associated I/O
Link Extender card to prevent the transmission of erroneous signals on the I/O Link.
Replacement procedures
There are two replacement procedures. They depend upon whether the Fiber Optic Coupler module is
mounted in a non-CE Compliant card file or a CE Compliant card file. The CE Compliant card file
requires an adapter kit because of the IOP connector ground plate.
Select the appropriate procedure from the two procedures that follow.
Non-CE Compliant replacement procedure
Use the procedure in the following table to replace the I/O Link Extender Coupler when it is installed in
a non-CE Compliant card file.
Step Action
1
Grasp the upper and lower extractors on the I/O Link Extender card and pull them
outward in unison. Move the card toward you until the card is disengaged from the card
file backpanel connector. It is not necessary to remove the card from the card file.
2
Disconnect the fiber optic cables from the Fiber Optic Coupler module. Be sure the
cables are properly labeled.
3
Using a screwdriver with a small blade, loosen the two screws that secure the Fiber
Optic Coupler module to the backpanel connector. Grasp the module firmly in your
hand and pull it towards you. Place the module on an antistatic surface or in an
antistatic container.
4
Replace the defective module by reversing step 3.
5
Reconnect the fiber optic cables to the module.
6
Reinstall the I/O Link Extender card by reversing step 1.
7
When you replace a Standard I/O Link Extender Fiber Optic Coupler module, you must
initialize both ends of the link(s) by manually resetting the I/O Link Extender cards
using the upper card extractor on the card.
When a Long Distance I/O Link Extender Fiber Optic Coupler module is replaced,
reinstalling either I/O Link Extender card produces initialization at both ends of the link.