Renogy ROVER Series Bedienungsanleitung

ROVER

20A | 30A | 40A

SERIES

Version 1.5

General Safety Information

Charge Controller Safety

Important Safety Instructions

Please save these instructions.

This manual contains important safety, installation, and operating instructions for the charge

controller. The following symbols are used throughout the manual to indicate potentially

dangerous conditions or important safety information.

There are no serviceable parts for this controller. Do NOT disassemble or attempt to repair

the controller.

Make sure all connections going into and from the controller are tight.

NEVER connect the solar panel array to the controller without a battery. Battery must be

connected first.

Ensure input voltage does not exceed 100 VDC to prevent permanent damage. Use the

Open Circuit Voltage (Voc) to make sure the voltage does not exceed this value when

connecting panels together.

Read all of the instructions and cautions in the manual before beginning the installation.

NOT

allow water to enter the controller.

NOTE

CAUTION

WARNING

Indicates a potentially dangerous condition. Use extreme caution

when performing this task

Indicates a critical procedure for safe and proper operation of the

controller

Indicates a procedure or function that is important to the safe and

proper operation of the controller

Battery Safety

Use only sealed lead-acid, flooded, gel or lithium batteries which

must be deep cycle.

Explosive battery gases may be present while charging. Be certain there is enough

ventilation to release the gases.

Be careful when working with large lead acid batteries. Wear eye protection and have

fresh water available in case there is contact with the battery acid.

Over-charging and excessive gas precipitation may damage the battery plates and

activate material shedding on them. Too high of an equalizing charge or too long of one

may cause damage. Please carefully review the specific requirements of the battery

used in the system.

Equalization is carried out only for non-sealed / vented/ flooded / wet cell lead acid

batteries.

NOT

equalize VRLA type AGM / Gel / Lithium cell batteries UNLESS permitted by

battery manufacturer.

Default charging parameters in Li mode are programmed for 12.8V Lithium Iron

Phosphate (LFP) Battery only. Before using Rover to charge other types of lithium

battery, set the parameters according to the suggestions from battery manufacturer.

Please set the correct battery type the first time you use.

Carefully read battery manuals before operation.

NOT

let the positive (+) and negative (-) terminals of the battery touch each other.

Connect battery terminals to the charge controller BEFORE connecting

the solar panel(s) to the charge controller. NEVER connect solar panels to

charge controller until the battery is connected.

Do NOT connect any inverters or battery charger into the load terminal of

the charge controller.

Once equalization is active in the battery charging, it will not exit this stage

unless there is adequate charging current from the solar panel. There

should be NO load on the batteries when in equalization charging stage.

WARNING

Recycle battery when it is replaced.

Table of Contents

General Information

Additional Components

Optional Components

Operation

LED Indicators

Rover Protections

System Status Troubleshooting

Maintenance

Fusing

Technical Specifications

Electrical Parameters

Battery Charging Parameters

ROVER: PV Power – Conversion Efficiency Curves

Dimensions

Identification of Parts 09

General

Installation

Error Codes

General Information

Customizable charging voltages

The MPPT Charge Controller utilizes Maximum Power Point Tracking technology to extract

maximum power from the solar module(s). The tracking algorithm is fully automatic and

does not require user adjustment. MPPT technology will track the array’smaximum power point

voltage (Vmp) as it varies with weather conditions, ensuring that the maximum power is

harvested from the array throughout the course of the day.

The Rover Series charge controllers are intelligent controllers suitable for various off-grid solar

applications. It protects the battery from being over-charged by the solar modules and

over-discharged by the loads. The controller features a smart tracking algorithm that maximizes the

energy from the solar PV module(s) and charge the battery. At the same time, the low voltage

disconnect function (LVD) will prevent the battery from over discharging.

The Rover's charging process has been optimized for long battery life and improved system

performance. The comprehensive self-diagnostics and electronic protection functions can prevent

damage from installation mistakes or system faults.

In many cases, the MPPT charge controller will “boost” up the current in the solar system. The

current does not come out of thin air. Instead, the power generated in the solar panels is the

same power that is transmitted into the battery bank. Power is the product of Voltage (V) x

Amperage (A).

Automatically detect 12V or 24V DC system voltages

Deep cycle Sealed, Gel, Flooded and Lithium (12.8V LFP) battery option ready

Electronic protection: Overcharging, over-discharging, overload, and short circuit

Innovative MPPT technology with high tracking efficiency up to 99% and peak

conversion efficiency of 98%

Reverse protection: Any combination of solar module and battery, without causing

damage to any component

Charges over-discharged lithium batteries

RS232 port to communicate with BT-1 Bluetooth module

MPPT Technology

Current Boost

Key Features

Therefore, assuming 100% efficiency:

Power In = Power Out

Volts In * Amps In = Volts out * Amps out

Although MPPT controllers are not 100% efficient, they are very close at about 92-95% efficient.

Therefore, when the user has a solar system whose Vmp is greater than the battery bank

voltage, then that potential difference is proportional to the current boost. The voltage generated

at the solar module needs to be stepped down to a rate that could charge the battery in a stable

fashion by which the amperage is boosted accordingly to the drop. It is entirely possible to have

a solar module generate 8 amps going into the charge controller and likewise have the charge

controller send 10 amps to the battery bank. This is the essence of the MPPT charge controllers

and their advantage over traditional charge controllers. In traditional charge controllers, that

stepped down voltage amount is wasted because the controller algorithm can only dissipate it

as heat. The following demonstrates a graphical point regarding the output of MPPT technology.

Temperature is a huge enemy of solar modules. As the environmental temperature

increases, the operating voltage (Vmp

) is reduced and limits the power generation of the solar

module. Despite the effectiveness of MPPT technology, the charging algorithm will

possibly

not have much to work with and therefore there is an inevitable decrease in

performance.

In this scenario, it would be preferred to have modules with higher nominal

voltage, so that

despite the drop in performance of the panel, the battery is still receiving

a current boost

because of the proportional drop in module voltage.

Limiting Effectiveness

Maximum

Power Point

Traditional

Controller

Operating

Range

Maximum

Power Point

Current vs. Voltage (12V System)Output Power(12V System)

Typical Battery

Voltage Range

CURRENT

VOLTAGE

10 15 17

CURRENT

VOLTAGE

10 15 17

The Rover MPPT charge controller has a 4-stage battery charging algorithm for a rapid,

efficient, and safe battery charging. They include: Bulk Charge, Boost Charge, Float Charge,

and Equalization.

Bulk Charge: This algorithm is used for day to day charging. It uses 100% of available solar

power to recharge the battery and is equivalent to constant current. In this stage the battery

voltage has not yet reached constant voltage (Equalize or Boost), the controller operates in

constant current mode, delivering its maximum current to the batteries (MPPT Charging) .

Float Charge: After the constant voltage stage, the controller will reduce the battery voltage

to a float voltage set point. Once the battery is fully charged, there will be no more chemical

reactions and all the charge current would turn into heat or gas. Because of this,

Constant Charging: When the battery reaches the constant voltage set point, the controller

will start to operate in constant charging mode, where it is no longer MPPT charging. The current

will drop gradually. This has two stages, equalize and boost and they are not carried out

constantly in a full charge process to avoid too much gas precipitation or overheating of the

battery.



Boost Charge:

Boost stage maintains a charge for 2 hours by default. The user

can adjust the constant time and preset value of boost per their demand.

Four Charging Stages

Battery

Voltage

Equalize

Boost

Float

Recharge

Bulk Charge

A B C

Constant charging

Cumulative Time:3h

Float Charge

Boost

Time

Battery

Current

Time

Bulk

Max Current

Duration Time:2h

(Range:10-180min)

The charge controller will reduce the voltage charge to smaller quantity, while lightly charging

the battery. The purpose for this is to offset the power consumption while maintaining a full

battery storage capacity. In the event that a load drawn from the battery exceeds the charge

current, the controller will no longer be able to maintain the battery to a Float set point and the

controller will end the float charge stage and refer back to bulk charging.

The Rover MPPT charge controller has a reactivation feature to awaken a sleeping lithium

battery. The protection circuit of lithium battery will typically turn the battery off and make it

unusable if over-discharged. This can happen when storing a lithium battery pack in a

discharged state for any length of time as self-discharge would gradually deplete the remaining

charge. Without the wake-up feature to reactivate and recharge batteries, these batteries would

become unserviceable and the packs would be discarded. The Rover will apply a small charge

current to activate the protection circuit and if a correct cell voltage can be reached, it starts a

normal charge.

Equalization: Is carried out every 28 days of the month. It is intentional overcharging of

the battery for a controlled period of time. Certain types of batteries benefit from periodic

equalizing charge, which can stir the electrolyte, balance battery voltage and complete

chemical reaction. Equalizing charge increases the battery voltage, higher than the standard

complement voltage, which gasifies the battery electrolyte.

When using the Rover to charge a 24V lithium battery bank, set the system

voltage to 24V instead of auto recognition. If auto recognition is accidently

selected the Rover will allow you to change it to 24V when the lithium battery

activation. In the activation interface press and hold the enter button to

trigger the system voltage selector. To change the system voltage, press the

Up or Down buttons then long press Enter to save the selected system voltage.

Lithium Battery Activation

Once equalization is active in the battery charging, it will not exit this stage unless

there is adequate charging current from the solar panel. There should be NO load

on the batteries when in equalization charging stage.

Over-charging and excessive gas precipitation may damage the battery plates

and activate material shedding on them. Too high of equalizing charge or for too

long may cause damage. Please carefully review the specific requirements of the

battery used in the system.

Equalization may increase battery voltage to a level damaging to sensitive DC

loads. Ensure that all load allowable input voltages are greater than the equalizing

charging set point voltage.

CAUTION

WARNING

Optional Components

Optional components that require a separate purchase:

The BT-1 Bluetooth module is a great addition to any Renogy charge

controllers with a RS232 port and is used to pair charge controllers with the

Renogy DC Home App. After pairing is done you can monitor your system

and change parameters directly from you cell phone or tablet. No more

wondering how your system is performing, now you can see performance

in real time without the need of checking on the controller’s LCD.

Renogy BT-1 Bluetooth Module:

Additional Components

Additional components included in the package:

This sensor measures the temperature at the battery and uses this

data for very accurate temperature compensation.The sensor is

supplied with a 9.8ft cable length that connects to the charge

controller.Simply connect the cable and adhere the sensor on top

or the side of the battery to record ambient temperature around the

battery.

NOTE

Do Not use this sensor when charging lithium battery.

Remote Temperature Sensor:

These brackets can be used to mount the Rover charge

controller on any flat surface. The screws to mount the

brackets to the charge controller are included, screws to

mount charge controller to surface are not included.

Mounting Brackets

The DM-1 4G Module is capable of connecting to select Renogy charge

controllers through an RS232, and is used to pair charge controllers with

Renogy 4G monitoring app. This app allows you to conveniently monitor

your system and charge syeters parameters remotely from anywhere 4G

LTE network service is available.

Renogy DM-1 4G Data Module:

Mounting Oval:7.66 x 4.70mm (0.30 x 0.18in)

9 10 11 12

Key Parts

Identification of Parts

1. PV LED Indicator

2. Battery LED Indicator

3. Load LED Indicator

4. System Error LED Indicator

5. LCD Screen

6. Operating Keys

7. Mounting Holes

8. Remote Temperature Sensor Port (optional accessory)

9. PV Terminals

10. Battery Terminals

11. Load Terminals

12. RS-232 Port (optional accessory)

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