Controls Interface; Overview; Dynaview Display; Key Functions - Trane R Series Installation, Operation And Maintenance Manual

Controls Interface

Overview

RTAC units utilize theTracer™ CH530 chiller control
system which consists of several elements:
• The main processor collects data, status, and
diagnostic information and communicates commands
to the starter module and the LLID (for Low Level
Intelligent Device) bus.The main processor has an
integral display (DynaView™).
• Higher level modules (e.g. starter) exist only as
necessary to support system level control and
communications.The starter module provides control
of the starter when starting, running, and stopping the
chiller motor. It also processes its own diagnostics and
provides motor and compressor protection.
• Low level intelligent device (LLID) bus.The main
processor communicates to each input and output
device (e.g. temperature and pressure sensors, low
voltage binary inputs, analog input/output) all
connected to a four-wire bus, rather than the
conventional control architecture of signal wires for
each device.
• The communication interface to a building automation
system (BAS).
• A service tool to provide all service/maintenance
capabilities.
Main processor and service tool (TechView™) software is
downloadable from www.Trane.com.The process is
discussed in section "TechView, " p.
DynaView provides bus management. It has the task of
restarting the link, or filling in for what it sees as "missing"
devices when normal communications has been
degraded. Use ofTechView may be required.
The CH530 uses the IPC3 protocol based on RS485 signal
technology and communicating at 19.2 Kbaud to allow 3
rounds of data per second on a 64-device network. A
typical four-compressor RTAC will have around 50 devices.
Most diagnostics are handled by the DynaView. If a
temperature or pressure is reported out of range by a LLID,
the DynaView processes this information and calls out the
diagnostic.The individual LLIDs are not responsible for
any diagnostic functions.The only exception to this is the
Starter module.
Note: It is imperative that the CH530 ServiceTool
(TechView) be used to facilitate the replacement of
any LLID or reconfigure any chiller component.
TechView is discussed later in this section.
Controls Interface
Each chiller is equipped with a DynaView interface.The
DynaView has the capability to display information to the
operator including the ability to adjust settings. Multiple
screens are available and text is presented in multiple
RTAC-SVX01J-EN
117.
languages as factory-ordered or can be easily downloaded
from www.trane.com.
TechView can be connected to either the DynaView
module and provides further data, adjustment
capabilities, diagnostics information using downloadable
software.

DynaView Display

DynaView™display interface is made of weatherproof and
durable plastic for use as a stand-alone device on the
outside of the unit or mounted nearby. See
The DynaView uses a 1/4 VGA display with a resistive
touch screen and an LED backlight.The display area is
approximately 4 inches wide by 3 inches high (102mm x
60mm).
Figure 34. DynaView

Key Functions

In this touch screen application, key functions are
determined completely by software and change
depending upon the subject matter currently being
displayed.The basic touch screen functions are outlined
below.
Radio Buttons
Radio buttons show one menu choice among two or more
alternatives, all visible. (It is the AUTO button in
The radio button model mimics the buttons used on old-
fashioned radios to select stations. When one is pressed,
the one that was previously pressed "pops out" and the
new station is selected. In the DynaView model the
possible selections are each associated with a button.The
selected button is darkened, presented in reverse video to
indicate it is the selected choice.The full range of possible
choices as well as the current choice is always in view.
Spin Value Buttons
Spin values are used to allow a variable setpoint to be
changed, such as leaving water setpoint.The value
Figure 34.
Figure 34.)
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