DVSR
DIGITAL VOLTAGE SENSE RELAY
12-24V AUTO
IGNITION PROTECTED
140AMP
2ND BATTERY CHARGING
RED-ON
12/24 Volt Selection, and First Powering:
When the DVSR is first powered, it will sample the power supply then decide whether to enter
12 volt (7-15.9 volts), or 24 volt (16 – 32 volts) mode. LED will flash rapidly while this occurs.
Please double check voltage in case batteries are flat, or another power source (e.g. solar panel)
is affecting the voltage. Once the 12 or 24 volt mode is selected, the DVSR will remain in this
mode until power is disconnected.
IMPORTANT!
Read before installing.
Use only “plastic safe” corrosion inhibiting
sprays. Do not wipe solvents/petrochemicals onto any plastic part
of the DVSR. These units are fully sealed, so they do not require any
other form of water proofing. The DVSR has been designed to be
water resistant but is not designed to be partially or fully submerged.
The main studs have been tinned to inhibit corrosion (petroleum base
grease may be used on these for further protection, but should not be used on plastic parts).
ALTERNATOR VS BATTERY BANK SIZE
:
The charging alternator’s amperage output should be between 20% and 35% of the battery
bank size in Amp Hours. e.g. 220AH bank = 44 - 77A alternator
NOTE: Alternator size must not exceed 140A, or 125A if alternator is “hot rated” with a
3 stage regulator
Start Batt Po (Large stud marked red)
: Connects to the battery (Live) side of the
Start Battery Isolator Switch
House Batt Po (Large stud)
: Connect to the battery (Live) side of the House Battery
Isolator Switch
Negative (Black wire)
: Connect to battery negative (ensure both battery banks share common
negative, see diagram)
INSTALLATION
Remove base to expose studs and cables.
Connect the DVSR to the back of the battery isolating switches,
ensuring that the battery cables are correctly sized. The LED on
the front of the DVSR should be visible, as it will instantly
show when it is in operation.
Use countersunk screws for fastening base down.
Use Pan head screws (supplied) for fastening the DVSR onto
the base.
68 mm
68 mm
NOTE:
This diagram
is a guide only showing
DVSR connections
and not intended as a
full electrical systems
wiring diagram.
SEC
OND
BATTER
Y
PO
SIT
IVE
+
SENSE
BATTER
Y
PO
SIT
IVE
+
REAR VIEW
Start
Battery
–
+
Engine
Earth
Start Battery
Isolator
House Battery
Isolator
Black Cable
(Supplied)
Battery
Charger
P/N 3099
Cut and join
jumper here for
ignition or storage
mode control
House
Battery
–
+
Accessories
BLACK
RED
SEC
OND
BATTER
Y
PO
SIT
IVE
+
SENSE
BATTER
Y
PO
SIT
IVE
+
REAR VIEW
ENGINE
BATTERY
Battery Isolating
Switches
BLACK
RED
Plastic safe
Petroleum
based
solvents
HOUSE BA
TT
PO
ST
AR
T BA
TT
PO
LED codes
:
OFF
: DVSR is disengaged, battery banks are not connected
ON
: The DVSR is engaged, battery banks are combined
Brief flash every 5 seconds
: DVSR is disengaging
Fast flash
: System voltage is either too high or too low, check
electrical system
House Batt Po
(Tinned stud)
Orange sticker
(Remote LED connection point)
Start Batt Po
(Tinned stud)
Black wire -
(Negative)
Red wire
(Ignition control/Storage mode)
Wiring Diagrams
DVSR Connections
SPECIFICATIONS
Current: 125 Amps Continuous, 140 Amps Intermittent
Ignition Protected UL 1107
Auto Voltage Sensing 12VDC or 24VDC (max 32VDC)
Power Consumption (Standby) 1.8mA (1.6mA at 24 VDC)
Power Consumption (Storage Mode) 0mA
Cut In/Cut Out Voltages 13.4V (26.8V) / 12.8V (25.6V)
NOTE: Both batteries must be the same voltage, either 12V or 24V DC.
CONNECTIONS
:
Locate DVSR to minimize cable lengths and ensure all cables are sized correctly for
minimum voltage drop (see table below).Voltage drop will decrease effectiveness of
the DVSR, reduce charge efficiency, and could damage the DVSR and surrounding
devices through excessive heat build-up. Ensure all connections are tight and
suitable for the installation. Use a neutral cure sealant to seal any cut cable ends.
DVSR POWER SUPPLY :
The DVSR takes its power supply from the red paint marked stud (Start Batt Positive
+) for standard installations. When the optional Ignition Control/Storage installation is
chosen, the DVSR power supply is supplied via the fused secondary supply and
switch, to the DVSR’s red looped wire. With the switch (or ignition switch) turned off,
the DVSR cannot activate.
OPTIONAL
ORANGE
