Description

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.

Features:

• 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