Replacing A Redundant Or Secondary Pgm Iota Board - Honeywell Experion PKS User Manual

12 PROFIBUS GATEWAY MODULE (PGM) MAINTENANCE

12.5 Replacing a redundant or secondary PGM IOTA board

Perform the following steps to replace a redundant or secondary PGM IOTA board
1 Select the Redundancy tab either from the primary or secondary PGM FB.
2 Click Disable Synchronization to set the Auto-Synchronization State parameter to "DISABLED."
On the defective IOTA, loosen screws at each side of the module cover that secures the PGM to the IOTA
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board.
4 Loosen the plastic screw on the front of the module cover.Be careful not to strip the plastic screw head.
5 Carefully remove the PGM from the IOTA board and connector.
6 Label and disconnect all cables from the IOTA board connectors, (yellow and green FTE cables, and
PBLink cables).
Do not fully tighten the IOTA mounting screws before installing and tightening the power and ground
screws (24V and COM terminals) which can bind during installation or removal. Follow instructions
carefully.
Loosen the four mounting screws only half-way that secure the IOTA board to the channel.
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Remove the screw from the left side of the IOTA board that connects to the 24 Vdc bus bar.
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Remove the screw from the right side of the IOTA board that connects to the COM bus bar.
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10 Remove completely the four mounting screws securing the IOTA board to the channel and remove the
IOTA.
Place screws, washers and spacers aside for reassembly.
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Assemble screws, washers and spacers on the new IOTA board.
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Mount the new PGM IOTA board on the channel at the same position as the old IOTA board.
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14 Insert and thread the four mounting screws only half-way to attach the IOTA board to the channel.
15 Insert and tighten the screw to the left side of the IOTA board that connects to the 24 Vdc bus bar.
16 Insert and tighten the screw to the right side of the IOTA board that connects to the COM bus bar.
17 Tighten the four mounting screws securing the IOTA board to the channel.
Set the Device Index address to the same address as the old IOTA using the three rotary FTE DEVICE
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INDEX switches.
19 Connect FTE-A and FTE-B Ethernet link cables to the RJ-45 connectors on PGM IOTA board.
• The yellow Cat5 cable must connect to the FTEA connector on the IOTA.
• The green Cat5 cable connects to the FTEB connector on the IOTA.
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21 Connect the PBLINK cables to IOTA board.
22 Insert the PGM onto IOTA board making sure that the PGM circuit board mates properly with the IOTA
board connector.
Secure the PGM to the IOTA board with two screws located at each side of the plastic cover.
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24 Using a #2 Phillips screwdriver, tighten the plastic screw on the front of the module cover. Be careful not to
strip the plastic screw head.
The PGM boots up into an unsynchronized secondary redundancy state with BKUP operating state.
Click the Redundancy tab from either the primary or secondary PGM FB.
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Click Enable Synchronization to initiate synchronization and allow auto-synchronization.
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