Velocitach Motor Control Board - Trane UniTrane Installation, Operation And Maintenance Manual

ECM Overview and Setup

VelociTach Motor Control Board

TM
The VelociTach motor control board controls and
reports the performance of up to two Trane brushless DC
(BLDC) motors.
Figure 41. VelociTach motor control board
The motor control board also:
• Coordinates the operation of the fan in response to
electric heat behavior and electric behavior in
response to hydronic heat behavior.
• Incorporates a user interface that allows adjustment of
certain unit parameters and provides constant
feedback on motor operation.
Figure 43. Screen representation of alphabetical characters
Figure 44. Screen representation of numerical characters
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• Integrates service and troubleshooting tools.
• Integrates a versatile configurable auxiliary
temperature sensor.
• Incorporates various safety and lockout features, such
as maintaining proper fan speeds if electric heat is
called for.
Status Display
Figure 42. Status display
The motor control board contains a four-digit, seven-
segment display that is used to present information in a
format close to real-world language, while having a small-
form factor. Most characters are immediately
recognizable; however, refer to the figures below for the
graphical representation of each alphanumeric character.
UNT-SVX07J-EN