Det-Tronics Eagle Quantum Premier - LON Communication Heartbeat

2-2
95-8533
18.2
Only devices that have been approved for use
with Eagle Quantum Premier can be connected
up to the LON. All approved devices have
been tested and certified to operate properly
on the LON.
LON COMMUNICATION HEARTBEAT
The Controller continuously broadcasts a
heartbeat signal over the LON loop. This
heartbeat is used for verifying the integrity
of the LON loop and for keeping the field
devices from going into a fault isolation mode.
Once every second, the heartbeat contains
the current time and date, which are used
by the field devices to log status events and
calibrations.
The Controller continuously tests LON
continuity by sending out a heartbeat on one
LON port and then listening for it on the other
LON port. The Controller also broadcasts
the heartbeat signal in the opposite direction
around the loop. This ensures that all field
devices, the LON Network Extenders (NE), and
communication wiring are correctly passing
the digital information around the loop.
The field devices use the heartbeat as
a mechanism to ensure that there is a
communication path back to the Controller. If
the field device does not receive a heartbeat
for a period of time, the device will go into a
LON fault isolation. In this situation, the device
opens one side of the LON and listens for a
heartbeat on the other side. If the device
doesn’t receive a heartbeat, it listens on the
other side of the LON and opens the opposite
LON connection.
CONFIGURATION
PC
MODBUS
INTERFACE
NETWORK
EXTENDER
DIGITAL
COMMUNICATION
UNITS
PIRECL
GAS
DETECTOR
UD10-DCU
LS2000
GAS
DETECTOR
HORNS
&
BEACONS
GAS DETECTION
COMBUSTIBLE, TOXIC, OR
OTHER 4-20 MA INPUT
RS-232
RS-485
8 DRY CONTACT INPUTS
8 RELAY
OUTPUT POINTS
UNSUPERVISED INPUTS AND OUTPUTS
8 CHANNEL DCIO MODULE
DRY CONTACT INPUTS
CONFIGURABLE
OUTPUT POINTS
CONFIGURABLE INPUTS AND OUTPUTS
FIRE DETECTION
UV
DETECTOR
UVHT/C7050
DETECTOR
X3301
DETECTOR
X3302
DETECTOR
UVIR
DETECTOR
IR
DETECTOR
INITIATING
DEVICE
CIRCUIT
CONTACT
CLOSURE
DEVICES
SIGNALING LINE CIRCUIT (SLC)
HARDWIRED I/O
ETHERNET OR SERIAL INTERFACE BOARD
EQP CONTROLLER
CONTROLNET or
ETHERNET DLR
(OPTIONAL
INTERFACE)
ONBOARD
SERIAL
INTERFACE
ETHERNET or SERIAL
INTERFACE
BOARD
P2114
+ – + –
EIO
MODULES
FIRE
SUPPRESSION
(SOLENOID)
POWER
SUPPLY
MONITOR
ASM/ASH
MODULE
APOLLO
DEVICES
BATTERY
CHARGER
AC
POWER
INPUT
SYSTEM
POWER
NOTE: CHANNELS CAN BE CONFIGURED
AS EITHER INPUTS OR OUTPUTS.
TROUBLE RELAY
(NC CONTACT)
RELAY
MODULE
8 UNSUPERVISED
RELAY OUTPUT POINTS
ANALOG
INPUT
MODULE
8 4-20 MA INPUTS
ETHERNET
or RS-232
ETHERNET
or RS-232
RS-485
HSSL
CHANNELS CAN BE CONFIGURED AS INPUTS,
OUTPUTS, SMOKE/HEAT DETECTORS,
CLASS A INPUTS, OR CLASS A OUTPUTS.
8 CHANNEL EDIO MODULE
Figure 2-1—Block Diagram of Eagle Quantum Premier System