Installation and Maintenance Manual

RLC-SVX09H-EN 131
Controls Interface
CH530 Communications
Overview
TheTrane CH530 control system that runs the chiller
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) with a built in serial port.
• 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 later in this section underTechView Interface.
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 RTWD/RTUD chiller will have around 40 devices,
depending upon its configuration.
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.
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.
Note: For definition of terms, see Service
Document section ofTechview, or selection
icon button next to setpoint title.
Controls Interface
DynaView
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
languages as factory-ordered or can be easily downloaded
from
www.trane.com.
The DynaView enclosure design is weatherproof and
made of durable plastic for use as a device on the outside
of the unit.
The display on DynaView is 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).
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
increases or decreases by touching the increment (+) or
decrement (-) arrows.
Action Buttons
Action buttons appear temporarily and provide the user
with a choice such as Enter or Cancel.
Hot Links
Hot links are used to navigate from one view to another
view.
File Folder Tabs
File folder tabs are used to select a screen of data. Just like
tabs in a file folder, these serve to title the folder/screen
selected, as well as provide navigation to other screens. In
DynaView, the tabs are in one row across the top of the
display.The folder tabs are separated from the rest of the
display by a horizontal line.Vertical lines separate the tabs
from each other.The folder that is selected has no
horizontal line under its tab, thereby making it look like a
part of the current folder (as would an open folder in a file
cabinet).The user selects a screen of information by
touching the appropriate tab.