Low Voltage Disconnect Installations Guide

Low Voltage Disconnect Installations Guide
m -L VD
Installation
LOW V O LT AGE DI SCONNEC T
Instructions
Scan for
additional
product
information
PN 7635 / 7635B
Senses low battery voltage and automatically disconnects
devices to save power for starting or to preserve battery life
• Status light in both m-LVD and Remote Control Switch provides visual warning of low
voltage state prior to disconnect
• Alarm output available for audible warning of low voltage state
prior to disconnect (optional alarm required)
• Remote Control Switch Functions:
Disconnect Voltage Adjustment - Sets desired disconnect voltage
Override - Temporarily delays circuit disconnect for 10 minutes
OFF - Temporarily disconnects circuits until voltage rises
Override or OFF - Silences alarm (optional alarm required)
• Includes Remote Control Switch PN 7928
CAUTION
CAUTION symbol refers to a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
WARNING
WARNING symbol refers to a potentially hazardous situation which, if not avoided, may
result in death or serious injury.
CAUTION
If you are not knowledgeable about electrical systems, consult an electrical professional.
WARNING
GUARANTEE: Blue Sea Systems stands behind its products for as long
as you own them. Find detailed information at www.bluesea.com/about.
For customer service, call 800-222-7617.
Blue Sea Systems Inc.
425 Sequoia Drive
Bellingham, WA 98226 USA
p 360.738.8230
f 360.734.4195
[email protected]
www.bluesea.com
Before beginning electrical installation, disconnect all AC and DC power sources.
Do not service equipment that has been automatically disconnected by the m-LVD
without first permanently removing power from the equipment by a means other
than the m-LVD.
DC
AC
Mount the m-LVD. Three mounting options are illustrated below:
980016770 Rev.002
1.00" (25.4mm)
SUGGESTED SCREW
LENGTH FOR 1/8"
PANEL THICKNESS
2-5/16" (58.7mm)
MOUNTING HOLE
DIAMETER
Specifications
Intermittent Rating: 5 min.
Continuous Rating
Nominal Voltage
Cable Size (to meet current ratings)
Terminal Stud Size
Disconnect Voltage
Factory Default Disconnect Voltage
Alarm Time Before Disconnect
Reconnect Voltage
Remote Control Switch
Maximum Alarm Current
Maximum External LED Current
115A
65A
12V DC
6 AWG (16mm²)
1/4"-20 (M6)
11.3V–12.1V Adjustable
12.1V
5 minutes
13V DC
Type: SPDT, Action: (ON)-OFF-(ON)
( ) = momentary
250mA
14mA
Regulatory
ISO 8846, Meets SAE J1171 external ignition protection requirements
#10 HEX NUTS
3/8" WIDTH
#10 MACHINE
SCREWS
Rear Panel Mount
1.00" (25.4mm)
SUGGESTED
MINIMUM SCREW
LENGTH
5/16" (7.9mm)
MAXIMUM PANEL
THICKNESS
2-5/8" (66.7mm)
MOUNTING HOLE
DIAMETER
#10 SCREWS
WITH THREAD
APPROPRIATE
FOR MOUNTING
SURFACE
Front Panel Mount
Installation (continued)
Front Panel Mount (Rear View)
Remove rear insulating cover as illustrated.
0.83"
(21.08mm)
2.25 (57.2mm)
SUGGESTED MINIMUM
SCREW LENGTH
1.45"
(36.83mm)
#10 SCREWS
WITH THREAD
APPROPRIATE
FOR MOUNTING
SURFACE
Surface Mount
Remote Control Switch
Mounting Hole Dimensions
Disconnect Voltage Adjustment
•
Remote Control Switch
Press and hold the OVERRIDE position of the remote control switch for 10 seconds to enter adjustment mode. Adjustment
mode can only be entered in the Connected or Disconnected states, not in the Low Voltage Warning state. LED will
begin a flash pattern to indicate the current Disconnect
voltage setting (see table below).
Operation during Low Voltage Warning or when Disconnected
• Press OVERRIDE
to temporarily delay circuit disconnect for 10 minutes.
•Press OVERRIDE or OFF
to silence alarm (optional alarm required).
•Press OFF
to temporarily disconnect circuits until voltage rises.
Disconnect Voltage Adjustment Table
Disconnect Voltage
LED Flash Count
Factory Default:
12.1V
11.9V
11.7V
11.5V
11.3V
5
4
3
2
1
• Press and release OFF to decrease the Disconnect voltage setting in 0.2V increments down to a minimum of 11.3V (1 flash).
Electrical Connections
• Press and release OVERRIDE to increase the Disconnect
voltage in 0.2V increments up to a maximum of 12.1V (5 flashes).
• The Installation Diagram illustrated below represents a common installation and is not meant to be a guide for wiring a specific vessel.
• When you are satisfied with your selection, release the switch, and wait
approximately 20 seconds, the m-LVD will save the new Disconnect Voltage Setting, and automatically return to normal operation.
Caution: Disconnect battery connections before beginning the installation.
Reconnect after the installation is complete.
Use the wire sizing chart below to select the appropriate wire sizes. Consult an ABYC certified electrician for proper fuse placement and sizing.
m-LVD Normal Operation Status Chart
Wire Size and Fuse Rating Chart*
Amps
≤30
≤50
≤65
m-LVD Normal Operation Status Chart
LED
Alarm
Relay
Status
OFF Solid
ON Solid
Double Flash
OFF
ON
OFF
Closed
Closed
Open
Connected
Low Voltage Warning
Disconnected
Min. Wire Size* (AWG)
#10
#8
#6
Fuse Rating
40A-50A
60A-65A
90A-100A
Min. Wire Size* (Metric)
6 mm²
10 mm²
16 mm²
* Larger wire sizes may be required to minimize voltage drop in long wire runs.
For more information please use the Circuit Wizard at www.circuitwizard.bluesea.com.
Installation Diagram
NEG
-
POS
+
ALARM OUTPUT
LED OUTPUT
FUSE
OPTIONAL
ALARM
STEREO OR OTHER
12V DC DEVICES
OPTIONAL BATTERY SWITCH
BATTERY
Required if
the battery is
over 800 Cold
Cranking Amps (CCA)
FUSE*
See Wire Size
and Fuse
Rating Chart
above
FUSE
Connection Legend
10A FUSE
DC Positive
DC Negative (Ground)
Optional
Control
REMOTE
CONTROL
SWITCH
m-LVD Connection Table
m-LVD Connections
Function
A
B
1
2
3
4
Battery
Load
Ground
Remote Switch
Alarm Output
LED Output
COMMON BUSBAR
8
7
1
4
2
5
3
6
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