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Control Panel Internally

mounted devices

For visual identification Internal
Control Panel mounted devices are
identified by their respective
schematic designation number.
Control panel items are marked on
the inner back panel in the control
panel. Figure 24 illustrated below,
identifies these devices. The Control
Panel Devices table corresponds to
the same device designators (see
right hand column). Optional
controls are present when a specific
optional controls package is
specified, as listed in the second
column. Optional controls packages
are; OPST Operating Status, GBAS
Generic Building Systems, EXOP
Extended operation, CDRP
Condenser Pressure, TRMM Tracer
communications, WPSR Water Flow
Pressure sensing, FRCL Free
Cooling, HGBP Hot Gas Bypass , and
EPRO Enhanced Protection
Figure 24 illustrates the Control Panel
Components Layout.
LLID Modules 1A1, 1A3, 1A4, 1A5,
1A6, 1A7, and 1A13 are standard and
present in all configurations. Other
Modules vary depending on machine
optional devices.
InterprocessorCommunication

Inter Processor

Communications IPC3

When using Tracer CH530, you will
not be required to know all the
details about the structure of the IPC3
bus. However this page gives
detailed information about the
system for those of you that are really
interested in how it works. The IPC3
protocol is based on RS485 signal
technology. IPC3 was designed to be
very efficient. It communicates at 19.2
Kbaud.
IPC3 Definitions:
Bus Management:
The DynaView™ provides the bus
management having the task of
restarting the link, or filling in for
missing nodes when the normal
communication has been degraded.
This involves reassigning node
addresses and filling in for nodes
that are off-line. The DynaView™
always has a node number of 01.
Node Assignment:
When a unit is factory
commissioned, the Low Level
Intelligent Device (LLID), or module,
must have their node addresses
assigned to them for storage in non-
volatile memory. The node addresses
are normally assigned sequentially
during factory commissioning.
Node Zero:
Node number zero is is a special
node assignment that is reserved for
devices that are service selected. A
LLID communicating on node
address zero will also communicate
on an assigned node address. A LLID
will only communicate on node
address zero if it is service selected.
Binding:
Binding is the process of assigning a
node number and functional IDs to a
LLID. Binding is a simple process:
1. Service selecting the LLID with a
magnet.
2. Assigning functional IDs to that
LLID with TechView™.
Functional Identification:
When each LLID on the bus is bound,
its inputs and outputs are given a
functional ID. The Frame LLIDS have
only one functional ID, but most
Panel LLIDs have more than one
functional ID. A dual high voltage
binary input will have two functional
IDs, a quad relay output has four
functional IDs.
The DynaView™ Main Processor with
its IPC3 Bus communicates to the
control panel devices, unit mounted
devices, and any remote devices on
the IPC3 bus network. The various
devices are discussed in the
upcoming sections.