Renogy DCDC30 Manuale utente
30A | 50A Version 1.0
Dual Input
DC-DC
On Board Battery Charger w/ MPPT
01
The manufacturer accepts no liablilty for damage in the following cases:
For protection，pay close attention to the following basic safety information when
using eletrical sevices:
Important Safety Instructions
Please save these instructions.
This manual contains important safety, installation, and operating instructions for the DCDC
Battery Charger. Do not operate the Battery Charger unless you have read and understood
this manual and the charger is installed as per these installation instructions. Renogy
recommends that the charger be installed by a qualified professional. Store it in a safe
place.The following symbols are used throughout the manual to indicate poentially
dangerous conditions or important safety information.
Damage to the product resulting from mechanical influences and excess voltage.
Use for purposes other than those described in the operating manual.
Electric shock
Fire hazards
Injury
Faulty assembly or connection.
Alterations to the product without expressed permission from the manufacturer.
CAUTION
WARNING
DANGER
Safety instruction:Failure to observe this instruction will result in
fatal or serious injury.
Safety instruction:Failure to observe this instruction can result in
fatal or serious injury.
Safety instruction:Failure to observe this instruction can lead to
injury.
NOTE
NOTICE
Failure to observe this instruction can cause material damage and
impair the function of the product.
Supplementary information for operating the product.
02
General Safety
Ensure that other objects cannot cause a short circuit to the contacts of the product.
Store the product in a dry and cool place.
In the event of fire，use a fire extinguisher that is suitable for electrical devices.
Only use the product as intended.
The product may not be used if the product itself or the connection cable is visibly
damaged.
This product may only be repaired by qualified personnel. DO NOT disassemble or
attempt to repair the unit. Inadequate repairs may cause serious hazards.
Children must be supervised to ensure that they do not play with the product.
Electrical devices are not toys.
Always keep and use the product out of the reach of children.
Before start-up，check that the voltage specification on the plate is the same as that of
the power supply.
Make sure all connections going into and from the product are tight
Disconnect the product from the battery
——each time before cleaning and maintenance
——before a fuse change (only by specialists)
WARNING
DANGER
NOTE
Do NOT allow water to enter the product
——Detach all connections.
——Make sure that no voltage is present on any of the inputs and outputs.
03
Ensure the PV input voltage does not exceed 25 Vdc to prevent permanent damage. Use
the Open Circuit Voltage (Voc) at the lowest temperature to make sure the voltage does
not exceed this value when connecting panels together.
Danger of fatal electric shock!
If you are working on electrical systems,ensure that there is somebody close at hand who
can help you in emergencies.
NEVER connect the solar panel to the charger without a service battery connection. The
Battery must be connected first.
Make sure that the cables has a suffcient cross-section.
Use ductwork or cable ducts if it is necessary to lay cables through metal panels or
other panels with sharp edges.
Lay the cables so that they cannot be damaged by the doors or the bonnet.
Crushed cables can lead to serious injury.
Lay the cables so that they cannot be tripped over or damaged.
Do not lay the AC cable and DC cable in the same conduit (empty pipe).
Do not lay the cables so that they are loose or heavily kinked.
Firmly secure the cables,contact with each other.
Do not pull on the cables
WARNING
Safety when connecting the product electronically
For installation on boats:
If electrial devices are incorrectly installed on boats，this can lead to corrosion damage
on the boat. Have the product installed by a qualified (boat) electrician.
DANGER
Charger Safety
NOTICE
CAUTION
NOTICE
Danger of explosions!
Never attempt to charge a frozen or defective battery.
In this situation
，
place the battery in a frost-free area and wait until the battery has
adjusted to the ambient temperature.Then start the charging process.
When working on batteries,do not wear any metal objects such as watches or rings.
Lead acid batteries can cause short circuits which can cause serious injuries.
Wear goggles and pretective clothing when you work on batteries. Do not touch your eyes
when working with batteries.
Do not smoke and ensure that no sparks can arise in the vicinity of the engine or battery.
CAUTION
Only use rechargeable batteries.
Use sufficient cable cross sections.
Protect the positive conduit with a fuse.
Prevent any metal parts from falling on the battery.This can cause sparks or short
circuit the battery and other electrical parts.
Follow the instrucions of the battery manufacturer and those of the manufacturer of the
system or vehicle in which the battery is used.
If you need to remove the battery,disconnect it first from the ground connection.
Disconnect all connections from the battery before removing it.
Make sure the polarity is correct when connecting.
NOTICE
Battery Safety
Batteries may contain aggressive and corrosive acids. Avoid battery fluid coming into
contact with your body. If your skin does come into contact with battery fluid,thoroughly
wash that part of your body with water. If you sustain any injuries from the acids，contact
a doctor immediately.
WARNING
04
Table of Contents
General Information
Product Overview
Identification of Parts
Dimensions
Installation
Mount the Battery Charger
Connect the Battery Charger
Typical Setup
Cable and Fuse Sizing
Operation
LED Indicators
Charging Logic
Trouble shooting
Technical Specification
06
07
07
09
11
10
11
14
15
15
16
16
17
18
21
22
Additional Components
Solar Charger Algorithm
05
General Information
The Renogy Dual Input DC-DC On Board Battery Charger w/ MPPT is designed to charge your
service battery to 100% from two inputs: solar and alternator. Featuring multi-battery
compatibility including Lithium, this DCDC utilizes alternator power, solar power with MPPT
technology, or both to make sure that you're always charged and can enjoy being off the grid
longer!
Designed to charge service batteries from two DC inputs—solar panels and alternator
Built-in Maximum Power Point Tracking (MPPT) to maximize the solar power
Key Features
Trickle charges the starting battery via solar panels if the service battery is fully charged
3-phase charging profile (Bulk, Boost, and Float) ensures your service battery will be
accurately charged at the correct voltage levels to 100%
Compatible with smart alternators (with variable output voltage)
Isolation of the starting battery and the service battery
Compatible with multiple battery types: Sealed, AGM, GEL, Flooded, and Lithium
Compact with a sturdy design, it was built tough for all conditions
Temperature and voltage compensation features prolong battery life and improve system
performance
Smart Protection Features: battery isolation, over-voltage protection, battery temperature
protection, over-current protection, overheat protection, reverse current protection, solar
panel and alternator reverse polarity protection
06
07
Identification of Parts
Product Overview
#
Labeling
Description
OUT+
ALT+
NEG-
1
2
RS485 Communication port for app and monitoring screen;
future development.
Battery Temperature Sensor port utilizing data for accurate
temperature compensation and charge voltage adjustment
Battery Voltage Sensor (RVSCC) port for measuring the
battery voltage accurately with longer line runs. Due to the
connection and cable resistance, there can be discrepancies in
voltages at the terminal vs the BVS.
PV+ Positive (+) input terminal for the PV Array. Requires ring terminal
Positive (+) input terminal from the Starter Battery
Positive (+) output terminal for House Battery
Common Negative (-) Terminal for Solar Panel Array,
Starter Battery, and House Batt
BTS
BVS
3
6
7
4
5
Key Parts
BVS+
BVS-
4
3
1
2
8
7
9
11 12 13
6
5
10
IGN+
08
#
Labeling
Description
Battery type push button. Change the LED to the matching
battery type of your application.
Alternator/Charging Indicator
Solar Charging Indicator
Service Battery Indicator
Battery Type Indicator
IGN+
8
9
10
TYPE
Key Parts
11
12
13
Ignition Signal Input port for triggering the battery charger for
smart alternators. IGN wire recommended 18-16AWG .
Standard/Traditional Alternator –has a fixed voltage
when charging (Do not connect IGN wire)
Smart Alternator—has a controlled charging output based on
operating conditions Variable. (Requires IGN signal wire).
Dimensions
NOTE
227mm [8.94in]
215mm [8.46in]
244mm [9.60in]
φ4.5mm
140mm [5.51in]
146mm [5.75in]
108mm [4.25in]
77mm
[0.18in]
[3.03in]
The 30A/50A models are the same dimensions.
09
Additional components included in the package:
Optional components require a separate purchase.
Additional Components
Optional Components
The proper battery charging voltage is important for optimum battery
performance and longevity. This Remote Temperature Sensor measures
temperature at the battery, allowing the DC-DC charger to use this data for
accurate temperature compensation and charge voltage adjustment.
NOTE
No temperature compensation when charging lithium battery.
Battery Temperature Sensor
Smart alternators allows the vehicle to control the output voltage depending
on the operating conditions whereas traditional alternators output a fixed
higher voltage. If your readings are around 14.4V DC then then you most
likely have the traditional, non-smart alternator. If your reading is closer to
12.5-13.5V then it’s likely that you have a smart alternator. Check with your
vehicle manufacturer to determine alternator status.
Communication cable for RS485 port for App and Monitoring Screen; future
development.
NOTE
Not connected if using traditional alternator.
IGN wire recommended 18-16AWG .
IGN Signal Wire for Smart Alternator
RS485 Communication Cable
The Battery Voltage Sensor provides users with more accurate battery
charging giving you peace of mind that the charge controller is operating as
effectively as it should. On certain applications with long line runs, there can
be a difference between the voltage measured at an MPPT/PWM solar
charger’s terminals and that measured at the battery terminals. The BVS is
the perfect solution by providing a more accurate battery voltage to the
controller and allowing it to adjust the charging stage more precisely
resulting in overall extension of your battery life.
Battery Voltage Sensor (RVSCC)
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