Redundant Systems

PLR (Programmable Logic Relay) Based Redundant System

Redundant or Failsafe Operation
For reliable cooling without interruption in the event an air conditioner becomes disabled, the Redundant E6 Option automatically calls upon the second air conditioner to deliver the required amount of cooling. For reliable cooling without failure in the event a PLR becomes disabled, the Failsafe E8 Option maintains the critical cabinet temperature by maintaining operation from the backup PLR.

Option Codes:

• E5: Primary PLR Based Unit
• E6: Secondary PLR Based Unit – provides redundancy should an air conditioner become disabled
• E7: Replacement Primary PLR Based Unit
• E8: Secondary Unit with Backup PLR – provides a failsafe option should the primary PLR become disabled