Time Mark Corp. Model 2611-24 Alternating Controller - 24V AC/DC


The Time Mark Model 2611 Alternating Controller is a microprocessor based controller designed for use where two loads are required to alternate to provide equal run time on the loads. LED indicators show the status of the unit’s three control switch inputs and 2 load outputs. A lead select switch allows the loads to alternate normally in the center position, or disable automatic sequencing and lock in a 1-2 or 2-1 sequence.

When a Stop, Lead or Lag switch closes, the corresponding LED on top of the unit will illuminate. When the Stop switch and Lead switch closes, Load 1 or Load 2 will come on and the corresponding green LED will illuminate. If fluid levels continue to rise and the Lag switch closes, the 2nd load will energize. Loads remain energized until the Stop switch opens or a fault condition is detected.

Fault Detection

If any control switches open or close out of order, the faulty switch is bypassed by the fault detection logic. STOP, LEAD and LAG switch inputs are reassigned to maintain safe operation. Should a faulty or fouled switch begin operating normally, the fault detection logic will restore STOP, LEAD and LAG assignments to their proper designation.


  • Alternate two loads or lock sequence with lead select switch
  • Sequence on - Simultaneous off (S.O.S.O.) operation
  • Works with 3 switches - Stop, Lead & Lag
  • Control switch fault detection
  • Replaces multiple components - saving space and labor
More Information
Features Automatic Alternating
Manufacturer Time Mark Corporation
Power 24V AC, 24V DC
Type Alternating Relays & Controllers
Additional Skus 261124
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