Product specifications

10
WINDOWS
®
BASED MICROCOMPUTER CONTROLLER
Complementing our high-energy efficient product is a
Full Function Microcomputer Controller designed to
keep your system running at its most Energy Efficient
Level, based on current load.
This system is designed as a Control ‘State’ (control
status) microcomputer providing the user with the
current Control State for the exact information on what
the microcomputer is doing. Some of the main features
of the controller are as follows:
•A large character LCD display that can be seen in
bright or dim lighting.
•A 16 function keypad that is so user friendly it rarely
requires a reference manual (Figure 5).
•A four-layer printed circuit board provides extremely
high quality and unit control stability.
•A battery backed up Real Time Clock that should
never need attention.
•An automatic power monitoring system that is
designed to protect your system.
•Multiple authorization levels to provide complete
security of the control system.
•Automatic history storage that provides data to a
flexible static and dynamic graphing system.
•Extended temperature range to allow operation in
either hot or cold climates, from -40°F (-40°C) to
140°F (60°C).
•A PC control programming download/pullback in
only 45 seconds.
•Alarm information is provided in simple English for
the previous 32 alarms, with data shown down to
the second.
•The system provides ‘last time’ enabled & disabled,
number cycles, and total run hours.
•A slope algorithm control function with all analogs
read 10 times per second which provides
unparalleled stability.
•A ‘special control zone’ based on leaving fluid
temperature that reduces compressor cycling, and
improves unit part load efficiency.
•A proactive compressor protection logic for
protecting against low or high discharge pressure
to minimize compressor cycling and nuisance trips.
•A Windows® based display providing all pertinent
information on your ‘PC’.
•A high speed RS232 port operating at 19,200 baud
for connection to a local PC up to 100 feet (30
meters) away or a modem at 14,400 baud rate
communications for remote communication.
•A high speed RS485 port for connection to a
building management system, or PC at 38,400 baud
rate communications up to 6000 feet (1829 meters)
away from the chiller(s).
Full Function
Microcomputer
Controller
with
Windows
®
Based
PC Interface
Figure 5