JOHNSON CONTROLS
FORM 160.75-EG1 (519)
20
OptiView™ Control Center (Cont'd)
The Control Center continually monitors the system operation and records the cause of
any shutdowns (Safety, Cycling, or Normal). This information is recorded 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 continually advised of the operating conditions by
various status and warning messages. In addition, it may be configured to notify the user
of certain conditions via alarms. The Control Center expands the capabilities of remote
control and communications. By providing a common networking protocol through the
Building Automation System (BAS), 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 maintained
with the present network of BAS communications. The chiller also maintains the standard
digital remote capabilities as well. Both of these remote control capabilities allow for the
standard Energy Management System (EMS) interface:
1. Remote Start.
2. Remote Stop.
3. Remote Leaving Chilled Liquid Temperature Setpoint adjustment (0 VDC to 10 VDC,
2 VDC to 10 VDC, 0 mA to 20 mA, or 4 mA to 20 mA) or Pulse Width Modulation.
4. Remote Current Limit Setpoint adjustment (0 VDC to 10 VDC, 2 VDC to 10 VDC,
0 mA to 20 mA, or 4 mA to 20 mA) or Pulse Width Modulation.
5. Remote READY TO START Contacts.
6. Safety Shutdown Contacts.
7. Cycling Shutdown Contacts.
The following sections are examples of the information displayed on some of the more
important screens:
SYSTEM SCREEN
This screen gives a general overview of common chiller parameters.
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