Honeywell Experion LX 8 series, Installation Instruction

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7.2 PGM Replacement
CAUTION
We recommend that you proceed with extreme caution whenever replacing any component in a control system. Be
sure the system is offline or in a safe operating mode. Component replacements may also require corresponding
changes in the control strategy configuration through
Control Builder , as well as downloading appropriate data to
the replaced component.
Prerequisites
• This procedure can be performed only while off process. See illustration below for more information:
To replace a non-redundant PGM:
1 Loosen screws at each side of the module cover that secures the PGM to the IOTA board.
2 Loosen the plastic screw on the front of the PGM cover. Be careful not to strip the plastic screw head.
3
Carefully remove the PGM from the IOTA board and connector.
4 Insert the new PGM onto the IOTA board making sure that the PGM circuit board mates properly with the
IOTA board connector.
5 Secure the PGM to the IOTA board with two screws located at each side of the plastic cover.
6
Using a #2 Phillips screwdriver, hand tighten the plastic screw on the front of the module cover. Be careful
not to strip the plastic screw head.
7 The new PGM boots up to Alive or NODB state.
8 Load firmware which is the same version as was running in the old PGM.
9
From Control Builder, perform a Load with Contents to the PGM.
7 MAINTENANCE
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