HELLA-New Zealand Limited
81-83 Ben Lomond Crescent
Pakuranga, Auckland, New Zealand
PO Box 51-427, Auckland 2140
HELLA Part No:
4RD 980 830-001 /
3099
DIGITAL
VOLTAGE
SENSITIVE RELAY
Dual battery charging made easy
V
Modern charging systems must be able to safely charge two or more
different types of batteries from one engine. Now, thanks to the DVSR
(Digital oltage Sensitive Relay), 4WD, boat and caravan owners can enjoy
batteries with one easy-to-install charging system.
Operation and Installation Instructions
Features and Benefits
•
Very low power consumption (<2mA)
• Multi-voltage, auto selects between 12VDC or 24VDC
• Digital technology for high e
fficiency and accuracy
• Dual battery bank voltage sensing
• Output for optional remote mounted status LED
• Optional switching circuit activates DVSR or switches it to zero power
consumption storage mode
• Protects start batteries from becoming flat
• High capacity (140A) design allows full alternator charging of heavily
discharged batteries
• Ignition protected
Optional Ignition Conrtol/Storage Mode (red wire)
:
Cut the end of the red looped wire (end closest to red dotted “Start Batt Positive +”
stud) where it joins the PCB/potting connect the remaining tail to the ignition/start
switch. With this feature selected the DVSR will only operate when the ignition key
is in the “ON” position (i.e. engine running). With the ignition switch “OFF”, current
draw
of the DVSR will be zero Amps.
Optional Storage Mode
:
Cut the red looped wire (as detailed above in “Ignition Control”) then connect to the
output from an ON/OFF switch. Connect the input of the switch to a fused positive
supply (+ 8-32V DC). With the switch in the ON position the DVSR will operate as
normal. With the ON/OFF siwtch OFF, the DVSR will not operate and the DVSR
current
draw will be zero Amps.
Optional Remote LED indicator output (Orange sticker on circuit board)
:
Cut silicon potting from above the orange sticker on the circuit board. Remove the
orange sticker and solder a wire to solder-pad on the circuit board. Repair the potting
with either silicon sealer, silicon grease, or marine grease. Connect the soldered wire to
negative leg of LED, connect the LED positive leg to fused 12V positive supply. For
24V supply, use a 2.2K (1/4W) resistor on positive supply.
DVSR Operation Explained - Charging
:
The DVSR is connected between two battery
banks. When the DVSR senses a
charging voltage (13.4V DC or 26.8V DC) on either
of the banks, it automatically
activates and joins the two battery banks after a short
delay (5 seconds), so they are
charged as one battery bank.
Isolation
:
When the DVSR senses that batteries are not being charged (voltage drops
to 12.8V
DC or 25.6V DC) the DVSR deactivates following a 20 second delay, separating the
combined battery banks into two isolated banks.
Optional Storage Mode
:
This can be used where the boat/vehicle is stored for long
periods without any battery
charging, but with the batteries still connected. Power
consumption is zero when this is
activated. Alternatively, the storage mode can be
wired via the ignition switch, so the
DVSR can only operate when the engine is
running. This provides optimal protection of
electronics from electrical spikes, zero
power consumption when ignition is off, and acts
like a single sensing VSR as DVSR will only activate when engine alternator is
charging.
IMPORTANT!
It is recommended that the DVSR is fitted by a qualified marine/
automotive electrician. Please follow the installation instructions supplied. If installation
is not correct, the unit may not perform to its designed potenti
a
l. If in
doubt, consult
your local dealer. It is the installer’s role responsibility to install and
use this product in
a manner that will not cause accidents, personal injury or property
damage.
Manufactured for HELLA by BEP Marine Limited
