CVGF-SVU02B-E4
23
Whenever the controller senses
a situation that might trigger a
protective shutdown, it focuses
on bringing the critical
parameter back into control.
When the parameter is no longer
critical, the controller switches
its objective back to controlling
the chilled water temperature, or
to another more critical
parameter should it exist.
Variable water flow through the
evaporator
Chilled water systems that vary
water flow through chiller
evaporators have caught the
attention of engineers,
contractors, building owners,
and operators. Varying the water
flow reduces the energy
consumed by pumps, while
requiring no extra energy for the
chiller. This strategy can be a
significant source of energy
savings, depending on the
application. With its faster and
more intelligent response to
changing conditions, Tracer
CH530 reliably accommodates
variable evaporator water flow
and its effect on the chilled water
temperature. These
improvements keep chilled
water flowing at a temperature
closer to its setpoint.
Unit Control
Panel (UCP)
Tracer CH530 Chiller
Controller
Tracer CH530’s Main Processor,
DynaView
™
, is fast and keeps
the chiller online whenever
possible. Smart sensors collect
three rounds of data per second,
55 times the data collection
speed of its predecessor. Each
device (a sensor) has its own
microprocessor that
simultaneously converts and
accurately calibrates its own
readings from analog to digital.
Because all devices are
communicating digitally with
the DynaView
™
, there is no need
for the main processor to
convert each analog signal one
at a time. This distributed logic
allows the main processor to
focus on responding to
changing conditions in the load,
the machine, its ancillary
equipment, or its power supply.
Tracer CH530 constantly
receives information about key
data parameters, temperatures
and currents. Every five seconds
a multiple objective algorithm
compares each parameter to its
programmed limit. The chiller’s
Adaptive Control
™
capabilities
maintain overall system
performance by keeping its peak
efficiency.
Summary of Contents for CVGF 1000
Page 87: ......
