Dry contact
activates when timer
counts down to zero
Timer
starts to
count down
Inverter
mode
entered
Microprocessor
Figure 25 — UPS Maintenance: Relay & Load Shed screen
Programmable Dry Contact Time of Day Action
You can assign a dedicated timer to a dry contact. Upon entering the Inverter operating mode, the timer is
activated and begins to count down from a user defined value. When the timer reaches zero, the programmed dry
contact relay is activated (Status = ON).
Figure 26 — Programmable Timer Operation
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