Significance of initial value settings in Menta

Issue

What is the significance of initial value settings for some blocks in Menta?

Product Line

TAC Vista

Environment

  • Menta
  • PVR, PVB, PVI

Cause

Initial value settings are used on the first program cycle after a download or the first program cycle after power has been off for more than 72 hours.

Resolution

The most common error in programming a value for the "initial value" is programming a value that causes some unique aspect of the program to execute. For example, if the initial value of the mixed air temperature is programmed at 0°F and a low limit alarm value of 40°F is part of the logic, a mixed air alarm will be generated on the first program cycle and the fan may be locked in the off position. Always program "safe" initial values.