Johnson Controls YORK YVAM 0350, Operation & Maintenance Manual

Page: 53 / 162

Variable speed drive screen
Figure 23: Variable speed drive screen
This screen displays information pertaining to the variable speed drive.
Table 35: Display only fields
Field/LED name Description
Motor Run (LED) Indicates whether the digital output from the controls is commanding the motor to RUN.
VSD Fault (LED) Indicates that the variable speed drive is reporting a fault over the communications link or
by logic low at the hardwired digital input.
Input % Full Load Amps Displays the input current as a percentage of the job FLA value, based on the highest phase.
Input Current Limit Setpoint Displays the input current limit value in use. This value could come from a 0-20 mA, 4-20 mA,
0-10 VDC, or 2-10 VDC input in Analog Remote mode, from a PWM signal in Digital Remote
mode, from SC-Equip Gateway interface in BAS (ISN) mode, or from a locally programmed
value.
Pulldown Demand Time Left Displays the time remaining in the programmed pulldown period if the value is nonzero.
VSD Output Voltage
Displays the output voltage measured to the motor.
VSD Output Frequency Displays the present output frequency to the motor.
Max Chiller Frequency Displays the maximum value that the output frequency is limited to for the chiller, based on
configuration.
Input Power Displays the total input Kilowatts measured by the variable speed drive.
Input kW Hours Displays the cumulative amount of kilowatts used over time as the drive motor controller
operates.
Motor Harmonics Displays the harmonics.
Output Current (RMS) - Phase
A, B, C
Displays the RMS current measured to the motor, for each phase.
VGD Position Displays the variable geometry diffuser position as a value between 0% and 100%.
Input kVA Displays the supply kVA measured by the VSD.
Input Power Factor Displays the relationship between the Input Power and the Supply kVA.
Rated Motor Voltage Displays the motor voltage rating, based on configuration.
Maximum Motor Current Displays the maximum motor current, based on configuration.
Motor % Full Load Amps Displays the percentage of maximum motor current presently delivered, based on highest
phase.
53 YVAM Control Center