Johnson Controls YORK YVAM 0350, Operation & Maintenance Manual

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Table 35: Display only fields
Field/LED name Description
Voltage Total Harmonic
Distortion - (L1, L2, L3)
Displays the Total Harmonic Distortion (THD) for each of the voltage lines as calculated by
the VSD.
Input Current Total Demand
Distortion - (L1, L2, L3)
Displays the Total Dynamic Distortion (TDD) for each of the supply current lines as calculated
by the variable speed drive.
Input Job Full Load Amps Shows the job input full load amp limit within a range limited from 10% to 100% of the drive
nominal input current at nominal line voltage.
Table 36: Programmable
Button Access Description
Local Input Current Limit Operator Allows the user to specify the maximum allowed input current (as a
percentage of job FLA). When the input current reaches this value, the input
current override takes effect.
Pulldown Demand Limit Operator Allows the user to specify the current limit value (as a percentage of FLA)
to which the chiller will be limited during the specified pulldown limit time.
This value will override the input Current Limit value during this time period.
This function is used to provide energy savings following chiller start-up.
Pulldown demand limit is ignored in BAS (ISN) control source because the
BAS system is expected to use its algorithms to reset current limit as required
in that operating mode.
Pulldown Demand Time Operator Allows the user to set a period of time for which the pulldown demand limit
will be in effect after the chiller starts.
Table 37: Navigation
Button Description
Home Returns to the Home screen.
VSD Details Navigates to the variable speed drive details screen.
Motor Details Navigates to the Motor Details Screen.
Capacity Control Navigates to the Capacity Control screen.
Power Panel Navigates to the Power Panel screen.
YVAM Control Center 54