Scenario 1: legacy N2 Controller fails - Facility Explorer - LIT-12012045 - Field Device - N2 Controllers

Modernization Guide for N2 Controllers - Facility Explorer

Facility Explorer
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N2 Controllers
Document type
User Guide
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In this scenario, a legacy N2 controller fails, either electronically or mechanically. The customer needs to replace just one controller. Consider the following options:

Option 1: Replace the legacy N2 controller with an FX-PC controller configured for N2. See Applying FX-PC Controllers as replacements for legacy N2 Controllers for the key challenges to this option.

Option 2: You may find Option 1 too challenging or not cost effective for just one controller. If so, consider finding a direct replacement. Many legacy N2 controllers are no longer in production. However, you may find direct replacements through sources other than new production. For example, you may find a direct replacement in the truck inventory of a service technician or through a Johnson Controls® distributor who has an inventory of legacy N2 controllers. Also, the Johnson Controls Repair Center has an inventory of refurbished legacy N2 controllers, as they offer repair and return capability for these devices.

Option 3: If the failed controller is used in a critical application and the situation is extremely time-sensitive, then you should consider moving a similar controller (if available) from a less critical application and temporarily using it as a replacement. Then implement either Option 1 or 2 when time permits.