Controls Interface - Trane CGAM Installation & Operation Manual

Controls Interface

CH530 Communications Overview
The Trane CH530 control system that runs the chiller consists of several elements:
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Main processor and service tool (TechView) software is downloadable from www.trane.com. The
process is discussed later in this section under TechView 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 of TechView
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
CGAM will have around 30 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.
Note: It is imperative that the CH530 Service Tool (TechView) be used to facilitate the replacement
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 languages as factory-ordered or can be easily downloaded from
www.trane.com.
TechView can be connected to the DynaView module and provides further data, adjustment
capabilities, diagnostics information using downloadable software.
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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).
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.
of any LLID or reconfigure any chiller component. TechView is discussed later in this section.
CG-SVX17D-EN