RND 305-00016 User manual

1
RND 305-00016 & 305-00017
USER MANUAL – BEDIENUNGSANLEITUNG
3 Stage Ba ery Charger
RND 305-00016 & 305-00017

2
RND 305-00016 & 305-00017
Keep this manual in a safe place for quick reference at all times.
This manual contains important safety and operation instructions for correct use of the ba ery charger. Read through the manual
and pay special a ention to the markings and labels of the charger, ba ery and
equipment connected to the ba ery system.
Pay special a ention to these two types of notices used in this manual.
WARNING:
Failure to heed this warning may cause injury to persons and damage to Equipment.
CAUTION:
Failure to observe this warning may result in damage to equipment and improper
functioning of the Charger.
WARNING:
• The charger is designed for in-door use. Protect the charger from ingress of water.
• This charger is made to charge only properly sized lead acid ba eries.
• Charging other types of ba ery or under-sized lead acid ba eries may cause fi re or explosion.
• Install the charger in accordance with all local codes
• Do not use the charger if it has been dropped or damaged.
• Do not remove casing of the charger, there is no user –serviceable parts inside.
• Do not charge the ba ery on boats. Remove the ba ery and charge on shore.
• Never a empt to charge a frozen ba ery
• Never a empt to charge a damaged ba ery.
• Wear protective goggles and turn your face away when connecting or disconnecting the ba ery.
• Never place the charger on top of a ba ery.
• Never smoke, use an open fl ame, or create sparks near ba ery or charger during normal charging
operation as ba eries may give out explosive gas.
• Do not charge ba eries in an enclosure (box- in) due to possible explosion of entrapped explosive gas.
• Use of accessory not recommended may cause risk of fi re, electric shock.
• Disconnect the mains supply before connecting or disconnecting the links to the ba ery.
• If the charger does not work properly or if it has been damaged, unplug its AC and DC connection.
CAUTIONS:
• Refer to ba ery manufacturer’s specifi c recommended values for ba ery type se ings and fl oat voltage se ing.
• Fix the charger to a stable surface using the holes at the fl ange.
• Ensure all ventilation ports are not obstructed for effi cient fan cooling, keep loose so material or paper off at the bo om of the
charger.
• If longer output charging cord is required, make sure the diameter is adequate for the current in given cable length.

3
RND 305-00016 & 305-00017
ENGLISH
Introduction
Congratulations on purchasing our new 3-Stage (IU0U) Switching Mode Ba ery Charger.
This ba ery charger is suitable for wet, sealed (RVLA), calcium-calcium, Gel and AGM in both car (SLI) and
deep cycle type of lead acid ba ery.
It is a “set and forget” automatic charger which can be permanently connected to ba ery.
The 15A and 20A models have dual charge banks for charging two ba eries simultaneously.
The special selectable Power Supply Mode allows charging ba ery with external load.
Intended Use:
All Automotive, Marine, Mobile Home, Electric Scooters, Golf Carts, Solar, Deep Cycle, UPS Standby,
Industrial & Commercial Applications.
A. Control and Indicators
1. Power Switch
To turn on and off AC power to Charger.
2. Ba ery Charger / Power Supply Selection
Slide Switch to set Charger to 3 Stage Charger or Power Supply Mode (See Section G)
3. Ba ery Type Selection
Slide Switch to set charger for AGM/Gel, Wet and Calcium-Calcium type ba ery.
4. Float Voltage Selection
Slide Switch to set Float Charge voltage to 13.2 /13.5V /13.8V.
5. Charge Status LED Display
Charger ON LED : Green - 3 Stage Charger Mode
Red - Power Supply Mode
BULK LED (Red) : Bulk Charging with constant max. current
ABSORPTION LED (Orange) : Absorption charging with preset constant max. voltage.
FLOAT LED (Green) : Float charging with preset constant voltage
6. FAULT LED (Red)
Charger malfunction (See Trouble Shooting)
7. Car Blade Fuse
Thermal fuse for reverse polarity protection
8. Charging Banks
Screw Terminals to connect to supplied charging cable.
9. Temperature Sensor Socket
Connection to optional accessory ATS-5100
Sensor to increase / decrease charge voltage at low/ high ba ery temperature.

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RND 305-00016 & 305-00017
Ba ery Type Selection
AGM/GEL : Sealed type (VRLA) , AGM-GEL , Maintenance Free , Automotive or Deep Cycle lead acid
ba eries
WET : Flooded Type lead acid ba eries (to which water can be added) Automotive or Deep Cycle
Calcium-Calcium : Sealed type (VRLA) Lead Acid ba eries with Calcium content Automotive or Deep Cycle
B1. FLOAT VOLTAGE SELECTION
These fi ne tuned selections of fl oat voltages enable the best voltage level for maximum ba ery life. Choose 13.8V when in doubt
or in Power Supply Mode.
Follow the markings on Deep Cycle ba eries of the Standby fl oat voltage.
B2. Recommended Ba ery Capacity
The following minimum AH capacities are a generalized suggestion, some ba eries can take higher charge current, check with
ba ery manufacturers for charging ba eries with smaller capacity.
C. Ba ery Charger Installation and Connection
Observe the warnings & safety precautions before rushing to install and operate the charger.
Check ba ery condition, fi ll up cells for wet ba ery, clean ba ery poles.
Secure the ba ery charger in a well ventilated place, make sure the mounting surface is fl at and without so covering material or
loose paper sheet. The air intake is at the bo om and air outlet at the back. Make sure both intake and outlet are not blocked.
Never place charger on top of ba ery.
Plug in the AC mains and turn on Power Switch , the Charger On LED and the Float LED should be on green indicating Charger is in
good order for charging lead acid ba ery.
Before connecting or disconnecting the charging cable, turn off the Power Switch and unplug AC cord from the mains.
First connect the Red cable to Positive + terminal of charger and the ba ery Positive + Pole. Then connect the Black cable to the
Negative – terminal and the Negative – Pole of the ba ery.
Make sure all the connections are secured and well tighten up, double check on the correct polarity.
Double check again for correct selection of Slide Switch 1 at Charger Mode, Switch 2 for Ba ery type and Switch 3 for Float Voltage
se ing value.
D. Normal 3 Stage (IUoU) Charging Operation
The 3 stage IU0U charge algorithm ensures fast , complete and at the same time gentle charging of the lead acid ba ery.
Charger Model
Ba ery Capacity
RND 305-00017 RND 305-00016
40 Ah - 100 Ah 80 Ah - 200 Ah

5
RND 305-00016 & 305-00017
ENGLISH
Stage 1. THE I-PHASE. The constant current charging, Bulk LED is on.
Normally the ba ery is charged at constant maximum current until it rises to the selected Absorption voltage level.
The charging voltage changes with the ba ery voltage.
If the initial ba ery voltage is less than 9V due to deep discharge, the bulk charge current is reduced to half of the maximum
until ba ery voltage rises over 9V.
Stage 2. THE UO-PHASE. The constant voltage charging, Absorption LED is on .
Ba ery Type Selection: Gel: 14.1V / Wet: 14.4V / Calcium: 15.5V
When the ba ery voltage rises to the selected Absorption voltage level, the charging switches to Constant voltage
charging and ba ery is over 85% full. The ba ery is kept at this high voltage while the current reduces gradually to set value
at which the charger automatically switches to Float Stage.
Stage 3. THE UO-PHASE. The constant voltage charging, Float LED is on.
Float Voltage Selection: 13.2 V / 13.5V / 13.8V
In this stage, the ba ery is full and only takes in the amount of current necessary for maintaining the capacity. The fl oat
voltage is preset independently by user according to the type of ba ery such that ba ery can be connected permanently to
the charger when it is not in use.
E. Manual Equalization Charging for wet type ba ery only
Wet lead acid ba ery requires periodic high voltage charging (about 10% overcharge absorption voltage) to balance the
voltage of each cell, reverse the high concentration of electrolyte at the bo om and clear up large sulfate crystals on the
plates. You can use the Calcium–Calcium selection to perform the manual equalization by carefully following the
ba ery maker’s recommended frequency and duration.
Make sure to manually switch off charger when time is up.
Take special precautions as ba ery will emit explosive gas during equalization charge.
F. Dual bank charging ( RND 305-00016 )
This feature is for caravans, and vehicles with two separate ba eries.
The two ba eries must be of same chemical make up and type to avoid over and under charging because only one se ing of
charging profi le for both.
Two ba eries are charged simultaneously and the ba ery with the lowest level gets most share of the current in the Bulk
charge stage until it is up to the same voltage level of the second ba ery (ba ery with higher initial level).
Both ba eries will go to the Absorption and the Float Charge at the same time.
G. Power Supply / 2-Stage Charger Mode (see Fig.3)
At this mode the Charger On (5) LED becomes red color and only Bulk and Float LED will function. The bulk LED will be off
when ba ery is charged to about 80% full.
The 3-stage charger becomes a 2-stage charger or as power supply in this selected mode because 3-stage charger over
charges ba ery with external load.
This selected mode is intended for use to charge ba ery with external load such as caravan or other ba ery and external
load combination.
A 2-Stage charger can be used as a combination charger/power supply. An external load can draw current from the charger
while the charger is recharging a ba ery. The charger does not care how much current is being diverted by an external
circuit as it switches from Bulk mode (constant current ) to Float mode based only on the ba ery terminal voltage.
However, a 2-Stage charger cannot completely charge the ba ery when the charger switches from bulk mode to fl oat mode.
A er switching to fl oat mode, the ba ery will, in most cases, be about 80% recharged. The ba ery receives the remaining
recharge while in fl oat mode over several days.
It is highly recommended to switch back to the 3-Stage Charger Mode periodically when the external load is disconnected.
Also the external load should not be more than 50% of the max. current of the charger , unless the ba ery is fully charged
up . If the bulk LED is on most of the time then the load is too large.
G1. As a stand alone power supply
It can also be used as a stand alone power supply without connection to a ba ery
It will provide a constant voltage according to the selected Float Voltage (13.2/13.5/13.8V) and rated DC current of the
charger.
However, it is not recommended for high surge load (such as lamp) in stand alone application as the initial high surge current
will trigger the overload protection of the power supply.