Chapter 1

iCOM Controls Training and Service Manual

Chapter 1

Temperature and Humidity

Control Programs

This section provides details on how your Liebert iCOM control responds to the user programmed inputs values and room conditions. Refer to this section when you need specific information control operation. This section includes details on four (4) user selectable temperature control programs and two (2) user selectable and humidity control programs.

Cooling and/ or Heating Required, in Percent (%)

The temperature control programs for the iCOM microprocessor is based on a calculated percent (%) requirement for cooling and/ or heating. This percent (%) requirement is determined by the control type (algorithm) selected by the user.

The four (4) user selectable temperature control programs are:

Intelligent

Proportional (P)

Proportional + Integral (PI)

Proportional + Integral + Derivative (PID)

Temperature Control Program Types

Intelligent Control – Factory Default Setting

The Intelligent Control operates from a set of general rules that defines how the control output should be adjusted for different system conditions. The rules are designed to duplicate the actions that an experienced human operator would take if manually controlling the system.

Basically, this is done in a three-function process that differs from earlier mathematically defined strict type data, hence, fuzzy logic. The on and off, true or

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Liebert TM-10098 service manual Chapter Temperature and Humidity Control Programs, Temperature Control Program Types