Det-Tronics EA2100CG Eagle 2000 Communication Gateway - Manual (Page 15)

LEDs
Five faceplate LEDs are provided for indicating the sta-
tus of the gateway relays. The LEDs correspond to the
active state of the relay, not the coil condition. When the
relay is reset, the corresponding LED is also reset.
RELAYS
The gateway is provided with five relays. The relays are
sealed and have form C (SPDT) contacts rated 5
amperes resistive at 30 vdc/250 vac. The relays can be
configured for either normally energized or normally de-
energized operation.
Four of the relays are general purpose relays and one
functions as a fault relay. The specific function of the
four general purpose relays is programmable through
the host computer. The fault relay responds to an inter-
nal gateway fault or to an open or short condition in the
communication network wiring.
Each general purpose relay has three configuration reg-
isters. The first designates a starting node address, the
second designates an ending node address, and the
third is a trigger configuration register.
The starting and ending node address registers designate
a “block” of nodes on the network that will activate the cor-
responding relay when the required conditions are met.
The configuration of the trigger register determines the
conditions to which the relay will respond. The gateway
will actuate the relay during an event that matches the
trigger register parameters and is within the configured
block of node addresses. The configurable event
options include communication network fault, sensor
fault, sensor calibration, alarm, input 2 active and node
not communicating.
The relays can be configured for latching or non-latching
operation. If latching operation is selected, the relays will
remain on until they are reset by pressing the reset push-
button on the gateway faceplate, by activating an exter-
nal reset switch, or by soft command through the gate-
way control word. The reset function resets the relay,
regardless of the status of the initiating device. This
allows additional events to trigger the same relay, even
though the first device may still be in a triggering mode.
AUTOMATIC DIAGNOSTICS
The gateway features self-testing circuitry that checks
for problems that could prevent proper system
response. The gateway performs two forms of diagnos-
tics – self diagnostics and communication loop device
diagnostics. Self diagnostic tests monitor the condition
11 95-8424
GAS
01 Ex
02 H
2
S
03 CL
2
04 CO
05 NH
2
06 SO
2
07 HCL
08 HCN
18 Toxic
19 O
2
FLAME
20 UV
21 IR
22 UV/IR
ENVIRONMENTAL
40 Oil on Water
41 PathWatch Heavy HC
42 PathWatch Total HC
43 PathWatch Benzene
44 PathWatch Low Sens
60 Other
GATEWAY/RELAY MODULE
80 Main Gateway
81 Aux Gateway
82 Backway Gateway
90 Relay Module
Table 1—Detector Type Codes
Table 2—Detector Range Codes
CODE RANGE
A 0 to 10
C 0 to 20
E 0 to 25
H 0 to 50
J 0 to 100
L 0 to 200
P 0 to 500
U 0 to 1000
— 4 to 20 ma
Table 3—Fault Codes
F10 = sensor/detector fault (com mod status bits 3 or 12)
F20 = com mod fault (com mod status bits 1, 2 or 8)
F30 = network fault detected by gateway
(bar graph will show 20 segments on)
F31 = loss of power to main gateway
(bar graph will show 20 segments on)
F32 = right heartbeat fault
F40 = reset or external reset of gateway
held longer than 30 seconds
F50 = gateway communication channel 1 fault
F51 = gateway communication channel 2 fault
F60 = invalid configuration, unable to configure