Specifications
5JOHNSON CONTROLS
FORM 160.80-EG1 (511)
OptiView Control Center
OPTIVIEW CONTROL CENTER
The YORK OptiView Control Center, furnished as standard
on each chiller, provides the ultimate in efciency, monitor-
ing, data recording, chiller protection and operating ease.
The control center is a factory mounted, wired, and tested
state-of-the-art microprocessor based control system
for R-134a screw chillers. The panel is congured with
a 10.4 inch diagonal color Liquid Crystal Display (LCD)
surrounded by “soft” keys, which are redened with one
keystroke based on the screen display at that time. The
display is rated at 450 nits. This revolutionary develop-
ment makes chiller operation quicker and easier than ever
before. Instead of requiring keystroke after keystroke to
hunt for information on a small monochrome LCD screen,
a single button reveals a wide array of information on a
large, full-color illustration of the appropriate component,
which makes information easier to interpret. This is all
mounted in the middle of a keypad interface and installed
in a locked enclosure.
The LCD display allows graphic animated display of the
chiller, chiller sub-systems and system parameters; this
allows the presentation of several operating parameters
at once. In addition, the operator may view a graphical
representation of the historical operation of the chiller as
well as the present operation. A Status Bar is displayed
at all times on all screens. It contains the System - Status
Line and Details Line, the Control Source, Access Level,
Date and Time.
During the Start Sequence and System Lockout Delay, the
system status will include a countdown timer indicating the
time remaining. The control panel is compatible with the
YORK Solid State Starter (optional), Electro-mechanical
(E-M) starter, or any customer supplied E-M starter that
complies with the YORK R-1051 standard. The locations
of various chiller parameters are clearly marked and in-
structions for specic operations are provided. The panel
verbiage is available in other languages as an option, with
English always available. Data can be displayed in either
English or Metric units, plus keypad entry setpoints of 0.1
increments.
Security access is provided to prevent unauthorized ac-
cess and/or a change of setpoints. This is accomplished
with three different levels of access and passwords for
each level. There are screens, displayed values, program-
mable setpoints and manual controls not shown available
to service the chiller. They are only displayed when logged
in at the service access level. The Advanced Diagnostics
and troubleshooting information for the chiller and the
panel is also included.
The panel is fused through a 1-1/2 or 2 KVA transformer
in the compressor motor starter to provide individual
over-current protected power for all controls. Numbered
terminal strips for wiring such as Remote Start/Stop,
Flow Switch, Chilled Water Pump and Local or Remote
Cycling Device are provided. The Panel also provides
eld interlocks that indicate the chiller status. These
contacts include a Remote Mode Ready To Start, a Cy-
cling Shutdown, a Safety Shutdown and a chiller Run
Contact. Pressure transducers sense system pressures
and thermistors sense system temperatures. The output
of each transducer is a DC voltage that is analogous to
the pressure input. The output of each thermistor is a DC
voltage that is analogous to the temperature it is sensing.