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CG-PRC002A-EN
Controls
Control Module
Trane do Brasil makes the latest
microprocessor control technology
available to its clients. The CH530
controller with the DynaView control
module. The DynaView has a touch
sensitive liquid crystal display which gives
the user access to all information about
configuration, operating mode,
temperatures, electrical data, pressures
and diagnostics.
Safety Controls
The controller also provides a high level of
protection for the equipment, by constantly
monitoring the evaporator and condenser
pressure, current, voltage and temperature
variables. When one of these variables
approaches a limit which could cause the
unit to switch off, the controller starts a
number of actions, such as stepping the
compressors and fans, in order to keep
the equipment working before taking the
final decision to take it out of service. In
normal operation, the controller will always
optimize the unit's operation by stepping
the compressors and fans so as to ensure
the best energy efficiency level for the
equipment operating conditions.
External Controls
The controller provides a number of
different controls using external signals,
thus making equipment operation more
flexible.
Remote On/ Off - The unit can be switched
on or off remotely by means of an NC
(normally closed) contact or switch..
Water Pump Interlock -The equipment
will be notified if there is water flow in the
evaporator by means of an auxiliary
contact in the water pump contactor and a
flow switch.
Water Pump Control -The controller has
an output to activate the evaporator water
pump contactor; an external control is
therefore not required to activate it.
Hot Gas Bypass Valve Control- When the
Hot Gas Bypass valve option is requested,
the controller has an output for operating
the valve based on the operational
information which the user sets in the
DynaView controller.
Emergency Stop - An NC contact or
external switch can be used to switch the
unit off in emergencies. The unit must then
be restarted manually using the DynaView.
This facility allows the unit to be switched
off by a fire alarm system, for example.
Optional Controls
Trane also offers an extremely wide range
of controls which are intended for
applications specific to individual
installations.
Remote Adjustment of the Chilled Water
Setpoint
The chilled water setpoint can be
controlled remotely by means of an analog
input, using a 0-10VDC or 4-20mA signal.
Signalling Relays
A set of 4 programmable relays can be
used for remote signaling of the unit's
operational status, such as maximum
capacity, operation at the limit,
compressors in operation and alarm
signaling.
Ice Making and Demand Control
The equipment can be put into ice making
mode externally by means of an NO
(normally open) contact. Unit demand
control can be carried out by means of an
NC (normally closed) contact in another of
this module inputs.
COMM3 Interface- This interface will
enable the equipment to be
interconnected to the Trane Tracer Summit
control and management system.
Independent
Controls
