The relays latch until the Logic Controller is reset.
The relays have SPDT (Form C) contacts, rated 5
amperes resistive at 30 vdc. Terminals are provided on
the LCU backplane for connecting EOL resistors.
Buzzer
The Logic Controller is furnished with an internal buzzer
for signaling a change in status. The buzzer has four
modes of operation:
— Off
— Alarm
— Trouble
— Supervisory.
In the normal mode with no events occurring, the buzzer
is off. If an alarm, trouble or supervisory event occurs,
the appropriate tone is generated. In the event of
multiple events, the order of priority is alarm,
supervisory, then trouble. Refer to Figure II-3 for the
tone patterns that identify each type of event.
The buzzer can be silenced by pressing the
ACKNOWLEDGE switch on the front panel (the key
switch must be in the “Acknowledge & Silence Enable”
position). If a second event occurs or if the original event
stops and then returns, the buzzer will again turn on.
NOTE
If a trouble condition has been acknowledged and
the condition exists for more than 24 hours, the
buzzer will again sound.
EQ2100IM ISOLATION MODULE
FEATURES
• Ground fault detection
• RS-232 isolation for data rates up to 19.2 Kbaud
• LEDs indicate status conditions
• EMI/RFI hardened
DESCRIPTION
The Eagle Quantum Isolation Module (LON Isolator)
protects the integrity of the communication network
wiring by isolating shorts and monitoring for ground
faults. The Isolation Module also provides electrical
isolation for the two serial communication ports between
the gateway and host devices.
Visual Indicators
LEDs on the front panel are provided for indicating
status conditions. See Figure II-4 for LED locations and
Table II-3A and II-3B for possible fault conditions.
II–7
95-8470
B1856
LON ISOLATOR
EAGLE QUANTUM™
LON ISOLATOR
GROUND FAULT
GROUND FAULT
POWER
–
POWER
+
COM 2
COM 1
DET
-
TRONICS
®
Figure II–4—Isolation Module Faceplate
0.5 SEC
0.5 SEC
0.5 SEC
1.5 SEC
0.1 SEC
0.1 SEC
5.0 SEC
2.0 SEC
ALARM
TROUBLE
SUPERVISORY
A1855
Figure II–3—Tone Pattern for Logic Controller Buzzer
Содержание Eagle Quantum 95-8470-05
Страница 116: ...Figure A1 A 10...
Страница 122: ...Figure B1 B 6...
Страница 125: ...APPENDIX D D 1 95 8470...
Страница 128: ...LON is a registered trademark of Echelon Corporation Modbus is a registered trademark of Modicon Inc...