York YK-EP Operation And Maintenance Manual page 138

Table 135: Programmable
Button Access level
Winding
Service
Setup
Vibration
Admin
Gain
Temperature
Admin
Disable
Vibration
Service
Setup
138
Description
Not shown when Winding Temperature Protection Setpoint
on MOTOR DETAILS Screen is set to Disabled. Allows a Service
Technician to program the High Winding Temperature (266 to 320°F;
default 311) and Winding Hotspot Allowance (0 to 18°F; default 0)
safety shutdown thresholds. Values entered are displayed in the
respective data boxes.
Only shown when access level is ADMIN and Motor Vibration
Protection Setpoint on MOTOR DETAILS Screen is not set to
Disabled. Allows a Service Technician to enter values for vibration
Input Gain [1:1, 11:1, 21:1 (default)].
Only shown when access level is ADMIN and Winding Temperature
Protection Setpoint on MOTOR DETAILS Screen is not set to
Disabled. Allows a Service Technician to disable individual winding
temperature sensors. The respective temperature data box reflects
enabled or disabled status. This could be applied to defective
sensors or for service reasons. When a sensor is disabled, the
respective temperature data box does not appear on the MOTOR
DETAILS Screen.
Not shown when Motor Vibration Protection Setpoint on MOTOR
DETAILS Screen is set to Disabled.
Allows a Service Technician to program the High Vibration Shutdown
(2.0 to 30; default Baseline X3) and WARNING (1.0 to 15; default
Baseline X2) thresholds for the Shaft End and Opposite Shaft End
bearings, along with the desired delays (shutdown - 0 to 30 seconds,
default 15; WARNING - 0 to 120 seconds; default 30). The vibration
thresholds are not in any particular units of measure. They are
relative values. The larger the number, the greater the magnitude of
vibration represented.
The thresholds used for Shutdown and warning will be either
the values entered by this Vibration Setup Setpoint or values
derived from the Vibration Baseline Setpoints. The values used by
the software depend upon the sequence in which the setpoints
are entered. If Vibration Baseline values are established (on the
MOTOR DETAILS Screen with either the MANUAL BASELINE key
or the AUTO BASELINE key) after thresholds have been entered
with the Vibration Setup Setpoint, the baseline derived Shutdown
and Warning thresholds override the thresholds entered with the
Vibration Setup Setpoint. Thresholds entered with this Vibration
Setup Setpoint, after baseline derived Shutdown and Warning
thresholds are entered, override Baseline derived values. The active
threshold values are displayed in the Motor Bearings High Vibration
Shutdown and High Vibration Warning data boxes on this screen.
YK-EP Style B Centrifugal Chiller