Off Delay Timer Function - Metasys - LIT-12011964 - Software Application - System Configuration Tool - 13.2

Metasys SCT: System Configuration Tool Help

Brand
Metasys
Product name
System Configuration Tool
Document type
User Guide
Document number
LIT-12011964
Version
13.2
Revision date
2020-01-21
Language
English

The following table and figures illustrate the function of the Off Delay timer.

Table 1. Off Delay Timer Function

Feature

Description

Activation

In a low to high Input transition, the Output becomes active the next time the logic executes (logic executes every 5 seconds).

Goes inactive in a high to low Input transition, depending on the state of the input during the duration period. If the Input returns to a high state (active), the timing cycle is canceled and the Output remains active. If the Input remains in a low state, the Output goes to the low state at the next execution of logic.

Output

See row above.

Reset

Cancels timer activity and makes the output inactive. If the Reset goes from active to inactive, the timer re-evaluates the Input at the next low to high transition.

Example

Keeps the fan running to purge the coils after a heating or cooling system is turned off. Off Delay is useful when your building contains electrical heat and/or DX cooling.

Figure 1. Off Delay Mode Example 1

Figure 2. Off Delay Mode Example 2