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Technical specifications for K2LCN-4 51401551-400
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Manufacturer:Honeywell
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Product Category:DCS Systems
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Spare Part Number:51401551-400
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Estimated shipping dimensions:36.6x36.3x2cm
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Weight:1 kg
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Tariff Code:8537101190
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Counliy of origin:USA
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Part number:51401551-400
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Board function:High-performance/density LCN processor
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Memory size:4 megawords
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Node family:TDC 3000 five/ten-slot module
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Rear companion:LCN I/O board
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Redundant-pair rule:Use compatible processor types
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Excluded replacement:HMPU cannot be replaced by K2LCN under the cited procedure
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Firmware record:Kernel and LCN firmware retained
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Commissioning basis:Node load, LCN paths and diagnostics
Information
Overview
Manuals
Common Applications
Product Precautions
Honeywell K2LCN-4 51401551-400 is the four-megaword K2LCN processor execution used in documented TDC 3000 Local Control Network node configurations.
- K2LCN processor
- 4 megawords
- Part 51401551-400
- LCN I/O companion path
The processor occupies the documented node position with LCN I/O hardware and sufficient memory for the loaded node personality. Redundant node pairs require compatible processor types and controlled database restoration.
Important Notice: Verify 51401551-400 and the required four-megaword memory size; do not substitute HMPU hardware or mix processor types in a redundant pair without the documented procedure.
Honeywell K2LCN-4 Manuals & Downloads
Honeywell K2LCN-4 Technical Reference (PDF)Honeywell K2LCN-4 Manufacturer Manual Excerpt (PDF)
The technical reference organizes exact characteristics and engineering boundaries. The installation guide focuses on controlled preparation, restoration, commissioning and handover.
Application Module service
Restores a four-megaword K2LCN processor position.
Operator Station node
Supports the documented four-megaword node configuration.
Redundant node maintenance
Uses matched processor types across the node pair.
Legacy LCN restoration
Returns node processing and LCN communications after controlled replacement.
Honeywell K2LCN-4 installation checks: retain the exact identity, installed configuration and witnessed acceptance record throughout the work.
1
Verify K2LCN-4 51401551-400 and the four-megaword suffix.
2
Record node type, slot, redundant partner, firmware and memory inventory.
3
Back up the node database and confirm a tested restoration path.
4
Apply the documented LCN maintenance state and isolate node power.
5
Use grounded ESD handling and protect processor and LCN I/O contacts.
6
Confirm no HMPU exception and no unsupported mixed processor pair.
7
Restore firmware, memory and node data only from the validated baseline.
8
Verify both LCN paths, node diagnostics and application operation before release.
Technical notes
For K2LCN-4 51401551-400, retain the exact manufacturer identity, installed wiring or node record and the witnessed model-specific acceptance result.
FAQ View All FAQ
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What memory size does the -400 suffix identify for K2LCN-4 51401551-400?Honeywell's service table identifies 51401551-400 as the four-megaword K2LCN board.
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What processor function does the board perform for K2LCN-4 51401551-400?It is the high-performance/density processor board for an approved LCN node configuration.
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Which LCN I/O path accompanies K2LCN-4 51401551-400 in a five-slot or ten-slot node?Documented five/ten-slot configurations place the K2LCN processor with an LCN I/O board.
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Can K2LCN-4 51401551-400 directly replace an HMPU?No. The cited service procedure explicitly excludes HMPU replacement by K2LCN.
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What rule applies to redundant node pairs for K2LCN-4 51401551-400?Use compatible processor types in both partners; do not mix processor generations without the documented engineering procedure.
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Which node data must be backed up before replacing K2LCN-4 51401551-400?Retain the node database, firmware revisions, memory inventory, LCN addressing and partner-node status.
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Which processor and LCN conditions are checked at first power-up of K2LCN-4 51401551-400?Review rail status, processor diagnostics, firmware identity, memory recognition and both LCN communication paths.
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Which communication and partner-node results accept K2LCN-4 51401551-400 in service?Confirm stable LCN communication, correct node personality, application execution and redundant-partner behavior where applicable.
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