Microprocessor; Temperature Control Microprocessor System; Figure 4.1 Temperature Control System - Carrier 69NT40-541-001 Operation And Service

Container refrigeration units
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SECTION 4

MICROPROCESSOR

4.1

TEMPERATURE CONTROL MICROPROCESSOR SYSTEM

The temperature control Micro-Link 3 microprocessor system (see
Figure
4.1) consists of a key pad, display mod-
ule, control module (controller), and interconnecting wiring. The controller houses the temperature control software
and the DataCORDER Software. The temperature control software functions to operate the unit components as
required to provide the desired cargo temperature and humidity. The DataCORDER software functions to record
unit operating parameters and cargo temperature parameters for future retrieval. Coverage of the temperature con-
trol software begins with
Section
4.2. Coverage of the DataCORDER software is provided in
Section
4.6.
The key pad and display module serve to provide user access and readouts for both of the controller functions,
temperature control, and DataCORDER. The functions are accessed by key pad selections and viewed on the dis-
play module. The components are designed to permit ease of installation and removal.

Figure 4.1 Temperature Control System

4–1
T-316

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