SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
JOHNSON CONTROLS
77
FORM 160.54-O1
ISSUE DATE: 9/10/2014
2
OVERVIEW
This screen applies to both Variable Speed Drives
(VSD) and Medium Voltage Variable Speed Drives
(MV VSD). It displays a cutaway view of the chiller
compressor, revealing the Pre-rotation Vanes. Anima-
tion of the Pre-rotation Vanes indicates their position.
In addition, this screen allows manual control of the
vanes and manual control of the Command Frequency
being sent to drive.
Shown above as it appears in software version
C.OPT.01.19.307 and later. Earlier version variations
noted below.
Requires a login access level of SERVICE.
Service Technicians refer to the OptiView
Control Center - Service Instructions
(Form 160.54-M1) for operation instruc-
tions and explanation of all programmable
setpoints and displayed values.
DISPLAY ONLY
Output Frequency
Displays the frequency at which the drive is operating
the motor. This value is returned from the drive.
Pre-rotation Vanes Position
Displays the present Pre-rotation Vane position as a
value between 0% (closed) and 100% (full open).
Delta P/P
Displays the chiller head pressure calculated as (condens-
er pressure - evaporator pressure/evaporator pressure).
Temperature Differential (LCHLT – Setpoint)
Displays the difference between the Leaving Chilled
Liquid Temperature and the Leaving Chilled Liquid
Temperature Setpoint.
Frequency Control Mode
Displays whether the Command Frequency to the drive
is derived from manual or automatic frequency control
mode.
Command Frequency
(Software version C.OPT.01.19.xxx and later)
When equipped with a VSD (with the Motor Com-
munications Protocol Setpoint set to MODBUS; ACC
Board not present) or equipped with a MV VSD, this
is the speed command being sent to the Drive Logic
Board in either Auto or Manual Speed Control mode.
When equipped with a VSD (with Motor Communi-
VSD TUNING SCREEN
LD13828
FIGURE 24 - VSD TUNING SCREEN
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