Section 2 - Optiview Control Center; Introduction - York YD Series Operation Manual

FORM 160.69-O1
ISSUE DATE: 9/30/2012
SECTION 2 – OPTIVIEW CONTROL CENTER

INTRODUCTION

The YORK OptiView™ Control Center is a micro-
processor based control system for R134a centrifugal
chillers. It controls the leaving chilled liquid tempera-
ture via pre-rotation vane controls and has the ability
to limit motor current via control of the pre-rotation
vanes.
The panel comes configured with a full screen LCD
Graphic Display mounted in the middle of a keypad
interface. The graphic display 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. For the novice user, the locations of various
chiller parameters are clearly and intuitively marked.
Instructions for specific operations are provided on
many of the screens.
The graphic display also allows information to be
represented in both English (temperatures in °F and
pressures in PSIG) and Metric (temperatures in °C
and pressures in kPa) mode. The advantages are most
apparent, however, in the ability to display many lan-
guages.
The Control Center continually monitors the system
operation and records the cause of any shutdowns
(Safety, Cycling or Normal). This information is re-
corded in memory and is preserved even through a
power failure condition. The user may recall it for
viewing at any time. During operation, the user is con-
tinually advised of the operating conditions by vari-
ous status and warning messages. In addition, it may
be configured to notify the user of certain conditions
via alarms. A complete listing of shutdown, status, and
warning messages is attached in the Display Messages
section of this book.
There are certain screens, displayed values, program-
mable Setpoints and manual control shown in this
book that are for Service Technician use only. They
are only displayed when logged in at SERVICE ac-
cess level or higher. The Setpoints and parameters
displayed on these screens are explained in detail in
YORK Service Manual 160.69-M1. These parameters
affect chiller operation and should never be modified
by anyone other than a qualified Service Technician.
They are shown in this book for reference only.
JOHNSON CONTROLS
Advanced Diagnostics and troubleshooting informa-
tion for Service Technicians are included in YORK
Service Manual 160.69-M1. Also included in the Ser-
vice manual are detailed descriptions of chiller fea-
tures, such as the Refrigerant Level Control, Variable
Speed Drive Oil Pump, Hot Gas Bypass, High Speed
Thrust Bearing Proximity Probe, Remote Setpoints,
Smart Freeze Protection, and Standby Lubrication.
The control center expands the capabilities of remote
control and communications. By providing a common
networking protocol through the ISN, YORK Chillers
not only work well individually, but also as a team.
This new protocol allows increased remote control of
the chiller, as well as 24-hour performance monitoring
via a remote site. In addition, compatibility is main-
tained with the present network of ISN communica-
tions. The chiller also maintains the standard digital
remote capabilities as well. Both of these remote con-
trol capabilities allow for the standard Energy Man-
agement System (EMS) interface:
1. Remote Start
2. Remote Stop
3. Remote Leaving Chilled Liquid Tempera-
ture Setpoint
2-10VDC, 0-20mA or 4-20mA) or Pulse Width
Modulation
4. Remote Current Limit Setpoint adjustment
(0-10VDC, 2-10VDC, 0-20mA or 4-20mA) or
Pulse Width Modulation
5. Remote "Ready to Start" Contacts
6. Safety Shutdown Contacts
7. Cycling Shutdown Contacts
The chiller operating program resides in the Optiview
control center Microboard. The control center could be
equipped with either of the following Microboards:
• 031-01730-000 – shipped in new production
chillers until August 2004. The program resides
in a replaceable Flash Memory Card. The soft-
ware version (C.MLM.11.xx.yzz) is printed on
label adhered to card. Program can be upgraded
by replacing the card.
adjustment (0-10VDC,
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