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FORM 160.87-OM1
ISSUE DATE: 8/24/2018
MEDIUM VOLTAGE VARIABLE SPEED DRIVE SCREEN
FIGURE 38 - MEDIUM VOLTAGE VARIABLE SPEED DRIVE SCREEN
OVERVIEW
This screen displays information pertaining to a Me-
dium Voltage Variable Speed Drive (MVVSD). For
details of MVVSD operation and setpoints, refer to
Medium Voltage Variable Speed Drive – Service (Form
160.00-M6).
DISPLAY ONLY
Motor Run (LED)
Indicates whether the digital output from the controls is
commanding the chiller to run.
Motor Heater (LED)
Indicates whether the optional Motor Heater is ON or
OFF.
Motor Current % Full Load Amps
Displays the motor current as a percentage of the Full
Load Amps (FLA).
JOHNSON CONTROLS
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
Current Limit Setpoint
Displays the current limit value in use. This value could
come from a 0 to 20mA, 4 to 20mA, 0 to 10VDC or 2
to 10VDC input in Analog Remote mode, PWM signal
in Digital Remote mode, E-Link or SC-EQ communi-
cations interface in ISN mode or a locally programmed
value.
Pulldown Demand Time Left
Displays the time remaining in the programmed
pulldown period if the value is not zero.
Input Voltage
Displays the average of the 3-phase input voltage to the
MVVSD. Value is provided by the MVVSD.
Output Voltage
Displays the output voltage to the motor. Value is pro-
vided by the MVVSD.
Output Frequency
Displays the present output frequency to the motor.
Value is provided by the MVVSD.
LD20156
91
2
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