Electronic Devices Limited ED830 User manual

ED830
BILGE LEVEL ALARM CONTROL UNIT
INSTRUCTION MANUAL
Address: Enigma House, Enigma Business Park, Malvern, Worcestershire, WR14 1GD
Tel: [phone] Fax: [phone]
Email: [email protected] Website: www.electronic-devices.co.uk
POWER
ALARM
FAULT
ZONE 2
RESET
ALARM
ACCEPT
POWER
ALARM
FAULT
ZONE 1
RESETTEST/
ALARM
ACCEPT
OVERRIDE
POWER
ALARM
FAULT
ZONE 4
RESETTEST/
ALARM
ACCEPT
LEVEL DETECTOR TYPE ED830
POWER
ALARM
FAULT
ZONE 3
RESETTEST/
ALARM
ACCEPT
OVERRIDE
manufactured in malvern, england
LIMITED
DEVICES
ELECTRONIC
E
TEST/
OVERRIDE OVERRIDE

ED830 - BILGE LEVEL ALARM CONTROL UNIT 2
ED830 IM REV 3 13.03.2018
INDEX
CONTROL PANEL DIMENSIONS DIAGRAM 4
ADJUSTMENTS (REACTION/RESET TIMING) 6
FLOAT SWITCH CONNECTION DIAGRAM 5
FLOAT SWITCH CONNECTION DIAGRAM 7
GENERAL 3
SPECIFICATION 3
FUNCTION DIAGRAM 3
PAGE
INSTALLATION- CONTROL PANEL 4
TESTING 6
INSTALLATION- FLOAT SWITCHES 5
ZONE CIRCUIT DIAGRAM 7

ED830 - BILGE LEVEL ALARM CONTROL UNIT 3
ED830 IM REV 3 13.03.2018
GENERAL
The ED830 is a four zone bilge level alarm control unit designed to meet the MCA code of practice. Each of the four zones are
independent from each other with completely separate circuitry, switches, fuses, lamps etc.
Zone wiring is fault monitored with the aid of a 4K7Ω resistor, which must be tted at the end of the line zone wiring in the form
of a end of line oat switch. Both on and off delay times can be adjusted for each zone giving a pump run on facility and avoiding
nuisance alarms due to movement of the vessel.
Please note it is the responsibility of the end user to test the equipment regularly to ensure correct operation.
SPECIFICATION
Power input 12VDC or 24V DC
Typical Current consumption per zone:
in non alarm condition = 20mA
in alarm condition = 25mA
with short circuit wiring fault = 70mA
Ambient temperature range -25C to +55C
Note sounder, beacon and pump consumption not included.
ENCLOSURE DIMENSIONS
See diagram on page 4
FUNCTION DIAGRAM
RESET
POWER
Illuminates green when zone circuit
is powered on.
Illuminates red when zone detector
in alarm condition
Illuminates amber when zone circuit
in short circuit fault.
Deactivates outputs connected to
alarm acceptable contacts
Resets the control panel to display
current condition.
Activates all connected outputs
ZONE
ALARM
ZONE S/C
Illuminates amber when zone circuit
in open circuit fault.
ZONE O/C
RESET
RESET
POWER
ALARM
FAULT
ZONE 2
RESET
ALARM
ACCEPT
POWER
ALARM
FAULT
ZONE 1
RESETTEST/
ALARM
ACCEPT
OVERRIDE
POWER
ALARM
FAULT
ZONE 4
RESETTEST/
ALARM
ACCEPT
LEVEL DETECTOR TYPE ED830
POWER
ALARM
FAULT
ZONE 3
RESETTEST/
ALARM
ACCEPT
OVERRIDE
manufactured in malvern, england
LIMITED
DEVICES
ELECTRONIC
E
TEST/
OVERRIDE OVERRIDE
POWER Illuminates green when power input is active.
ALARM Illuminates red when zone in alarm.
FAULT Illuminates amber when zone in fault.
Deactivates outputs connected to
alarm acceptable contacts
Resets the control panel to
display current condition.
Activates all connected outputs.

ED830 - BILGE LEVEL ALARM CONTROL UNIT 4
ED830 IM REV 3 13.03.2018
INSTALLATION - CONTROL PANEL
The control unit should be mounted in a convenient place for the operator, away from possible mechanical damage or ingress of
moisture and allowing the enclousure to swing open for ease of adjustment. (See diagram below)
N.B. If the only suitable position is exposed to dust or moisture then consideration should be given to having the enclosure to
I.P.54 standards or above. Contact Electronic Devices Ltd if you require advice or assistance.
The enclosure is opened by releasing the two screws on the right hand side of the enclosure and is secured to a wall or bulkhead
by four screws or bolts at the rear of the enclosure. Sufcient cable should be allowed so that the enclosure can swing open on
its hinges. The oat switch should of course be mounted as low as possible in the bilge and will be impervious to attack from
both fresh and salt water, diesel oil, etc. It requires approx 30mm-40mm of travel of the oat to cause operation of the switch.
M3 mounting
holes 25mm
from edges.
LEVEL DETECTOR TYPE ED830
275mm (283mm required for lid clearance)
(335mm required for lid clearance)
283mm
Cable gland entry holes.

ED830 - BILGE LEVEL ALARM CONTROL UNIT 5
ED830 IM REV 3 13.03.2018
INSTALLATION - FLOAT SWITCHES
CONNECTIONS
Ensure the intended supply voltage is suitable for the ED830 supplied, both 12Vdc and 24Vdc models are available.
The diagram below shows both single and multiple oat switch per zone connection possibilities.
ED735
E.O.L
ED735
E.O.L
ED735
E.O.L
ED735
E.O.L
ED735
E.O.L
LEVEL DETECTOR TYPE ED830
Zone 1 Zone 2 Zone 3 Zone 4
LEVEL DETECTOR TYPE ED830
Zone 1 Zone 2 Zone 3 Zone 4
Single E.O.L float
switch per zone
Multiple float switches
per zone wired in
parallel. E.O.L must be
last float switch for
each zone
ED735
Standard
ED735
E.O.L
ED735
Standard
ED735
Standard
ED735
Standard
ED735
Standard
ED735
E.O.L
ED735
Standard
ED735
Standard
ED735
E.O.L

ED830 - BILGE LEVEL ALARM CONTROL UNIT 6
ED830 IM REV 3 13.03.2018
TESTING
ALARM OUTPUT FUNCTIONS
The ED830 has three sets of voltage free contacts for each zone. One set for the pump, if tted. The pump must have a current
consumption of less than 6A or be driven via a suitable external relay. The second set of contacts are for a low power xenon
beacon which could be tted high on the vessel (e.g top of the mast) to attract attention whilst moored etc. The third set is for
electronic audio alarms, this is alarm acceptable, if this facility is not required the beacon or pump contacts can be used. All
peripheral equipment connected to the voltage free contacts should be supplied via external fuses or circuit breakers.
REGULAR TESTING
It is very important to check correct operation of all the bilge level alarm components regularly, and the tests below should be
performed at regular intervals. The magnetic circuit within the oat allows either normally closed or normally open operation.
When the oat is raised the circuit will be made and the 1K5Ω resistance will be connected across the zone line.
TESTING
On completion of installation it is important that both short circuit and open circuit faults are simulated and correct alarm operation
checked.
Check the operation of the unit by testing each oat switch separately. Remove the oat switch from its mounting bracket
and lower into a pail of water. The appropriate light should illuminate and the external items (sounders/beacons/pump) should
operate after a small delay set by adjustable ON delay. The sounder can be muted by pressing alarm accept. Remove the oat
switch from the water, the beacon and pump will continue to operate. Press the reset button and after the short off delay the
pump and beacon will stop.The ON delay and pump RUN ON delay can be adjusted by rotating the potentiometers VR2 and VR3
respectively, clockwise to increase. See adjusting zone reaction time and reset time below.
TEST OUTPUT FUNCTIONS
The ED830 TEST/OVERRIDE button can be used to test the outputs on each individual zone.
ADJUSTMENTS - ON DELAY & PUMP RUN ON DELAY
ADJUSTING ZONE ON DELAY TIME
This adjustment determines the length of time needed before the pump and other outputs operate after the oat switch is
submerged in water.
The on delay can be adjusted by rotating the VR2 potentiometer, clockwise to increase ON delay time and anti-clockwise to
decrease ON delay time.
ADJUSTING ZONE PUMP RUN ON DELAY TIME
This adjustment determines the length of time the pump and other outputs continue to operate after the oat switch is no longer
submerged in water.
The pump run on (reset) delay can be adjusted by rotating the VR3 potentiometer, clockwise to increase pump run on delay and
anti-clockwise to decrease pump run on delay time.

ED830 - BILGE LEVEL ALARM CONTROL UNIT 7
ED830 IM REV 3 13.03.2018
+VE -VE
DC INPUT
+VE -VE
ZONE
C NC NO
ALARM CONTACTS
ACCEPTABLE
VR2
VR3
VR2 Use VR2 to adjust ON DELAY TIME
Clockwise turn increases ON delay time
Anti-clockwise turn decreases ON delay
time
VR3 Use VR3 to adjust RESET TIME
Clockwise turn increases pump RUN
ON delay time
Anti-clockwise turn decreases pump
RUN ON delay time
WARNING!
Ensure correct
voltage before
connecting
12VDC and
24VDC models
available
+VE -VE
DC INPUT
+VE -VE
ZONE
C NC NO
ALARM CONTACTS
ACCEPTABLE
NON ACCEPT
C NO NC
SPARK QUENCHED FOR PUMP
C NO NC
ACCEPTABLE
CONTACTS FOR
SOUNDER
(VOLT FREE)
CONNECT FLOAT
SWITCH(ES) WITH
E.O.L FLOAT
SWITCH AS LAST
FLOAT SWITCH
NON ACCEPT
C NO NC
SPARK QUENCHED FOR PUMP
C NO NC
NON ACCEPTABLE
CONTACTS
(VOLT FREE)
NON ACCEPTABLE
CONTACTS FOR PUMP
(VOLT FREE)
ZONE CIRCUIT, CONNECTION & ADJUSTMENTS DIAGRAM