York YK-EP Operation And Maintenance Manual page 131

Table 130: Display only
Field/LED name
Pre-Rotation Vanes Position
Motor Windings
Temperature
Average Winding
Temperature
Motor Cooling Coil Leak
Detected (LED)
Motor Bearings
Temperature
YK-EP Style B Centrifugal Chiller
Description
If equipped with a Pro-rotation Vanes potentiometer, displays the
present Pre-Rotation Vanes position as a value between 0% (closed)
and 100% (full open).
Displays the enabled Motor Winding Temperatures for phase A, B
and C. The setting of the Winding Temperature Protection Setpoint
affects this display as follows: When winding RTD's are enabled,
there are 2 temperatures per phase displayed (otherwise, there
is only 1 per phase). When set to Disabled, no temperatures are
displayed and the heading, text and data boxes do not appear.
Individual temperatures can be disabled using the Temperature
Disable Setpoint (on the MOTOR SETPOINTS Screen). When an
individual temperature is disabled, the temperature data box
does not appear. Any RTD input that registers as an open RTD is
considered invalid and displays as XXX.X.
This value is calculated as the average of all enabled and valid Motor
Winding Temperatures. Any winding temperature that registers as
open, out of range or disabled is not used in the calculation. When
RTD's are used for winding temperature measurement, there are a
maximum of 6 temperatures used to calculate the average. When
transmitters are used, there are a maximum of 3 temperatures used
to calculate the average. The text description and data box do not
appear when the Winding Temperature Protection Setpoint is set to
disabled.
Illuminates when the enabled Motor Cooling Coil Leak Detector
(refer to Motor Cooling Coil Leak Protection in Table 131) indicates a
leak. The LED and text description do not appear when the Motor
Cooling Coil Leak Protection Setpoint is set to Disabled.
Displays the enabled Shaft End and Opposite End motor bearing
temperatures. Any RTD input that registers as an open RTD,
is considered invalid and displays as XXX.X. When the Bearing
Temperature Protection Setpoint is set to Disable, no temperatures
are displayed and the heading, text and data boxes do not appear.
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