WSPC USER INTERFACE Part 1: User Level
52
Figure 5.6 Adjustments Tab – VSD Parameters
VSD Setpoint pressure - The targeted pressure for the variable speed controls.
This is normally adjusted near the bottom of the load/unload band. The speed will
be adjusted to maintain this pressure. Most packages will allow adjustment of this
over a wide range to allow tailoring of the pressure to the needs of the
application. Adjustments will be automatically made to the maximum speed to
operate the motor at its full capacity at any pressure.
Cost per KWH - The cost per kilowatt-hour of energy is entered here. This
setting is used in the cost estimates displayed in the VSD Performance box of
the Compressor Data display. Value is set in dollars or other units of currency.
For example, an entry of 0.070 equals 7 cents per KWH.
Adjustment of the VSD control parameters is accomplished in the same manner
as the adjustments of the general parameters described in Section 3.8 of this
manual.
5.9 ADMINISTRATOR LEVEL VSD ADJUSTMENTS
Refer to Section 6.5.11 of this manual for administrator level control parameter
adjustments to VSD compressors.
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