Daikin AGZ Руководство по установке и обслуживанию - Страница 6
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Light Emitting Diodes (LEDs)
The L
W
communication module has two LEDs that
on
orks
indicate communication activity and network status. These
indicators are visible when the communication module is
connected to the MicroTech III chiller unit controller and the unit
is powered on
(Figure
4).
BSP LED
The BSP LED indicates the communication state between
the L
W
communication module and the unit controller
on
orks
(Table
1).
Table 1: BSP LED Activity
BSP LED Color
Description
Flashing that alternates
Board Support Package (BSP) firmware upgrade
between red and green
in progress.
Communication is established between the
Green
communication module and the unit controller.
The communication module is capable of
Yellow
communicating to the unit controller. However,
communication is not established.
Download the BSP firmware again. For BSP
versions 9.26 and newer, the communication
Flashing between red and
module enters a fail-safe mode
yellow
BSP download is performed. However, two
downloads are required.
Red flashing with 2Hz
BSP (firmware) error.
Red
Hardware error.
1. The fail-safe mode does not apply to communication modules with BSP
versions older than 9.26.
2. In the event that this should occur, cycle power to the unit controller. Contact
the Daikin Applied Controls Customer Support Group at 866-462-7829 for
additional assistance if necessary.
BUS LEDs
The BUS LED indicates the communication status between the
L
W
communication module and the network
on
orks
Table 2: BUS LED Activity
BUS LED Color
Description
The unit controller is capable of communicating to the
Green
network.
Yellow
The communication module is initializing.
The unit controller has not yet communicated with the
Yellow flashing
network.
Red
Hardware error.
L
W
Network Connector
on
orks
The network connector is the physical connection between the
L
W
communication module and the FTT-10A bus. Two
on
orks
pins are used for this purpose as indicated below and shown in
Figure 4.
Pin
Function
CLA
FTT-10A
CLB
FTT-10B
IM 968-4 • MICROTECH III CHILLER UNIT CONTROLLER
after the initial
1
2
(Table 2).
Board-To-Board Connector
The 10-pin board-to-board connector connects the MicroTech
III chiller unit controller to the L
module
(Figure 6
and
Figure
Figure 6: Board-to-Board Connector
Neuron ID
The basis of the L
W
on
orks
Echelon Neuron integrated circuit (Neuron chip). Every Neuron
chip has a unique 48-bit Neuron ID or physical address. The
Neuron ID can be used to address the device on the L
network.
The Neuron ID is generally used only during initial installation
or for diagnostic purposes. For normal network operation, a
device address is used.
Transceiver
The L
W
communication module is equipped with an
on
orks
Echelon Free Topology Transceiver (FTT-10A) to enable
network communication. The transceiver supports free
network topology (including ring, star, and daisy-chain)
using unshielded, twisted pair cable with polarity insensitive
connections at each node. Free topology segments require
termination for proper transmission performance.
Data transmission rate on the network is 78 kbps (baud).
6
I
nTroduCTIon
W
communication
on
orks
8).
communication module is an
on
www.DaikinApplied.com
W
orks