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ORGANIZATION

The controller requires various user settings that determine how the controller will function or operate. These settings are

called Parameters.

The parameters are always presented in a fixed format: The Lower Readout displays the parameter prompt (Identification

Tag) and the Upper Readout displays the set value. The parameters appear in the same sequence as listed in their respective

sections.

For convenience and ease of memorizing, the various parameters have been arranged in different groups depending upon the

functions the parameters represent. Each group is assigned a unique PAGE NUMBER for its access and the parameters

within each group are presented for settings depending upon the function(s) selected.

PROGRAM MODE

The Program Mode allows the user to view or modify the parameter values. The entry from MAIN Display Mode to Program

Mode requires appropriate setting of the PAGE NUMBER. Follow the steps below to open a desired PAGE for setting the

parameter values:

Figure 3.1

PAGES AND PARAMETERS

1. Press and release PAGE key. The Lower Readout shows PAGE and the Upper Readout shows 0. See Figure 3.1.

2. Adjust the Upper Readout to the desired PAGE NUMBER using the UP/DOWN keys.

3. Press and release ENTER key. The Lower Readout shows the prompt for the first parameter listed in the PAGE and the

Upper Readout shows its current value.

Note:

If the entered PAGE NUMBER is invalid (contains no parameter list or any associated function), the controller reverts to the MAIN Display

Mode.

Adjusting Parameter Values

Once a PAGE is accessed, step through the following sequence to adjust the values of the desired parameters:

1. Press and release the ENTER key until the prompt for the desired parameter appears on the Lower Readout. The last

parameter in the list rolls back to the first parameter.

2. Use UP / DOWN keys to adjust the parameter value.

Note that some parameters (examples; ‘Alarm Band’, ‘Proportional Band’, ‘Zero Offset for PV’ etc.) have numeric values

while others (examples; ‘Output-3 Function Selection’, ‘Compressor Control Strategy’, etc.) have a series of options. If

User Manual

HumiTherm-c (Dry-Wet)

Section 3

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HumiTherm-c

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AL2

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PPI HumiTherm-c Series User Manual

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