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ABS-PRC001-EN20
Controls Data
Setting The Standards
Trane set the standard for unit
microprocessor controls in 1985 with the
first generation of Unit Control Panel.
Associated with this standard have been:
• Proportional Integral Derivative (PID)
control strategies, which provide stable
operation and high accuracy for better
performance, along with feed forward
plus;
• Adaptive Control
™
to keep the chiller
“on line” and at the same time keep the
chiller away from a major failure;
• Software based safeties that do not
depend on electromechanical hardware
– hardware that means questionable
reliability and added cost;
• Operator interface that accesses chiller
information and control adjustments at
the front of the panel.
UCP2
™
UCP2 adds more flexibility, more
reliability and better system performance
than even our most demanding
customers expect.
Flexibility
Trane offers the ability to adapt to
changes easily and effectively without
adding prohibitive cost. To provide
flexibility, the controller responds to a
wide variety of needs for:
• System Designs, including equipment,
operating conditions and controls
variations that are either existing or
being considered for new installations.
Key to designing non-traditional
systems is the ability to evaluate the
cost and reliability issues of these
systems in comparison to the more
traditional systems. Trane recommends
the use of C.D.S. Network Equipment
Economics, the Trane Applications
Manuals and consultation with a Trane
sales engineer for help in this analysis.
• System Upgrades, including the ability
to accommodate changes in the chilled-
water system design or equipment
room requirements, or to
accommodate new technologies that
become available.
• Modular structure of the UCP2 makes it
possible for the designer to select the
system controls and associated
interfaces to Tracer
®
(or other building
automation systems) that are required
for the chiller plant design. With this
modular concept, capability can be
added or upgraded at any time, with
only temporary interruption of chilled-
water production.
• The operator can quickly program a
Custom Report — so that only what are
considered to be the most frequently
accessed/important reports are
available — at any time, right at the
front of the panel.
• With easy front panel programmability
of Daily, Service Start-up and Machine
Configuration settings and setpoints,
the operator, serviceman and system
designer can customize the use of the
micro controller to unique conditions of
the chiller plant — whether the purpose
of chilled water is for comfort cooling or
for process cooling.
• All data that is necessary for the safe
operation and easy serviceability of the
chiller is provided as standard on all
Horizon
®
absorption chillers. Options
are available that provide additional
controls/data that are required for: an
industrial/process system design,
applications outside of the typical
chilled water system design, the need
for redundant machine protection or the
desire for more system information.