Applications Guide Tracer Graphical Programming - Trane

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Adding a deadband
Figure 32: Deadband function with less than (assume heating)
relationship
Centered (assume cooling)
In the centered mode, the output of the deadband function turns on when
the measured value exceeds the setpoint plus one half of the deadband.
The output remains on until the measured value falls below the setpoint
minus one half of the deadband (Figure 33).
Figure 33: Deadband function with centered (assume cooling)
relationship
To add a deadband:
1. From the Blocks menu, choose Function. From the Function menu,
choose Deadband.
2. Click in the design space to place the Deadband block.
3. Move the Deadband block to the former location of the Greater Than
block.
4. Set the Deadband block as greater than (assume cooling) because we
want the fan to stay on until the temperature falls below the setpoint
minus the deadband (Figure 31 on page 32).
CNT-APG001-EN 33