MDS Power IBC320 User manual

INSTALLATION &
OPERATION MANUAL
IBC320
INTELLIGENT
BATTERY
CHARGER
www.mdspower.com
T.514.369.4919 TF. 800.931.4919

3
AC-SOURCE BATTERY CHARGER
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS — This manual contains important safety and operating
instructions for the battery charger.
BATTERY CHARGER PRECAUTIONS
1. Do not expose the battery charger to rain or snow unless it is a sealed model.
2. Use of an attachment not recommended or sold by the battery charger manufacturer may
result in a risk of re, electric shock, or injury to persons.
3. Do not disassemble the battery charger; return it to the manufacturer or an authorized
service center when service or repair is required. Incorrect reassembly may result in a
risk of electric shock or re. Voltages in excess of 350 volts are present inside the charger
anytime it is plugged into an AC outlet, even if it is switched off.
4. To reduce risk of electric shock, unplug the battery charger from the AC outlet before at-
tempting any maintenance or cleaning. Turning off controls will not reduce this risk.
5. Never place battery charger directly above battery; gases from battery will corrode and
damage battery charger.
6. Never allow battery acid to drip on the battery charger.
BATTERY SAFETY
1. WARNING — RISK OF EXPLOSIVE GASES
i. WORKING IN VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BATTERIES
GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION. FOR THIS
REASON, IT IS OF UTMOST IMPORTANCE THAT EACH TIME BEFORE SERVICING
EQUIPMENT IN THE VICINITY OF THE BATTERY, YOU READ THIS USER GUIDE AND
FOLLOW THE INSTRUCTIONS EXACTLY.
ii. To reduce risk of battery explosion, follow these instructions and those published by
the battery manufacturer and manufacturer of any equipment you intend to use in
vicinity of battery. Review the cautionary marking on these products.
2. PERSONAL PRECAUTIONS
i. Someone should be within range of your voice or close enough to come to your aid
when you work near a battery.
ii. Have plenty of fresh water and soap nearby in case battery acid contacts skin,
clothing, or eyes.
iii. Wear complete eye protection and clothing protection. Avoid touching eyes while
working near battery.
iv. If battery acid contacts skin or clothing, wash immediately with soap and water. If acid
enters eye, immediately ood eye with running cold water for at least 10 minutes and
get medical attention immediately

4
MEDICAL EQUIPMENT NOTICE
This unit is not recommended for use in life support applications where failure or
malfunction can be reasonably expected to cause failure of the life support device
or to signicantly affect its safety or effectiveness. This unit is not recommend the
use of any of its products in direct patient care. Examples of devices considered to
be life support devices are neonatal oxygen analyzers, nerve stimulators (whether
used for anesthesia, pain relief, or other purposes), auto-transfusion devices,
blood pumps, debrillators, arrhythmia detectors and alarms, pacemakers,
hemodialysis systems, peritoneal dialysis systems, neonatal ventilator incubators,
ventilators for both adults and infants, anesthesia ventilators, and infusion pumps
as well as any other devices designated as “critical” by the U.S. FDA.
DANGER: Never alter the AC power cord or plug provided. If it will not t the
output, use an approved adapter or have the proper AC power cord installed by a
qualied electrician. Improper connection can result in the risk of electric shock.
i. NEVER smoke or allow a spark or ame in the vicinity of a battery.
ii. Be extra cautious to reduce risk of dropping a metal tool onto battery. It might spark or
short-circuit the battery or another electrical part and cause a re or explosion.
iii. Remove personal metal items such as rings, bracelets, necklaces, and watches when
working with a lead-acid battery. A lead-acid battery can produce a short- circuit current
high enough to melt metal, causing a severe burn.
iv. NEVER charge a frozen battery.
v. If it is necessary to remove a battery from service, always remove grounded terminal from
battery rst. Make sure all accessories connected to the battery are off, to prevent an arc
when reconnecting the new battery.
vi. Be sure the area around battery is well ventilated.
vii. Clean the battery terminals regularly. Be careful to keep corrosion from coming in contact
with eyes.
viii. Study all the battery manufacturer’s specic precautions such as removing or not removing
cell caps while charging and recommended rates of charge.
GROUNDING AND AC POWER CORD CONNECTION INSTRUCTIONS
The plug must be plugged into an outlet that is properly installed and grounded in accordance
with all local codes and ordinances.

5
TABLE OF CONTENTS
• Front Cover, Product Photo and Title
• Product Warnings and Advisories
• Table of Contents
• Introduction
• Box Contents
• Main Parts
• Installation
• Operation
• Troubleshooting
• Specications
• Warranty
Revised - March 31, 2020

6
Introduction
Box Contents
The box you have received should contain the following:
• One IBC320 Intelligent Battery Charger
• One Battery Temperature Sensor
• One USB cable
• This user guide
• One Warranty Registration Card
If anything is missing or damaged please contact your dealer for a replacement
The IBC320 series Intelligent AC-source Battery Charger works any standard AC voltage
worldwide to deliver up to 300 watts of precision charging power to charge your 12, 24, 32, or 48
volt battery systems (The batteries must share a common ground).
This unit uses advanced Power Factor Correction circuitry on the input to use the electricity in the
most effective and efcient way. Inside, LLC Resonant Converter technology allows Zero Voltage/
Zero Current switching on the primary or high voltage side of the main power transformer. On
the secondary or low voltage side, active rectication ensures maximum efciency and minimum
electromagnetic interference (EMI) for operation near sensitive radio frequency communication
equipment.
On the front panel, eight dual color LEDs to clearly indicate charging levels and operating
condition. Two sets of easy-to-use color coded battery connection terminals. Two battery
temperature sensor ports are available for connection with the supplied battery temperature
sensor (a second sensor can be added for monitoring two bank systems).
The charger is pre-programmed with the charging proles for three standard types of Lead Acid
batteries; Flooded (traditional Lead Acid), AGM (Absorbed Glass Mat Lead Acid) and Gel or
VRLA (Valve Regulated Lead Acid). A fourth prole pre-set for a typical Lithium Ion battery is also
available. These proles can be further customized by choosing 2 or 3 stage charging using the
stage select switch on the front panel.
Any of the charging proles can adjusted to suit any specic make and model of battery
using the free-to-download PowerWizard software. PowerWizard adds advanced algorithm
reprogramming, charger monitoring and graphing function all accessible through the front panel
USB port.
The charger uses the temperature data to compensate the output voltage for optimal charging
as well as for monitoring purposes to prevent the battery from overheating during charging and
equalize cycles. Other safety features include charger over temperature shutdown, current
limiting, short circuit protection, input under voltage shutdown and output over voltage protection
all with automatic recovery.

7
Main Parts
1. Power Button
2. MicroUSB Port
3. Indicator LEDs
4. Battery Temperature Sensor Connection
5. Program Select Button
6. Stage Select Switch
7. End-of-Charge function Switch
8. Equalize Cycle Start Button
9. DC Output Connection: 2x Phoenix
VDFK Terminal Block Connetions (Red:
Positive, Black Negative)
10. Chassis Ground Stud
Front Panel
2
3
10
9
4
1
8
5
6
7
Rear Panel
1. AC Power Input Connection:
6-foot/2-meter cord ending in a NEMA
5-15 Plug
2. Input Fuse: AGC-5 Amp
2
1

Operation
1. Connect the unit to the battery and AC power source.
2. Press the Power Button on the unit’s front panel.
3. The charger will go through its startup sequence. All 6 microprocessor-controlled LEDs
ash red and then green. When the Power Button starts glowing, the sequence is
complete.
4. The charger will automatically begin charging the connected battery or batteries according
to the settings selected during setup. See Conguration Mode for more information.
The IBC320 battery charger is designed for simple and intuitive operation. It is intended to
operate fully unattended and will attempt to recover from any fault, including Charger Over-
Temperature, Battery Over-Temperature, Low Input Voltage, AC Power Failure and more.
In addition to being a battery charger, the IBC320 is also capable of functioning as a power
supply. While in Power Supply Mode, the unit’s functionality is changed in the following
ways:
• The DC outputs will be live regardless of whether or not a battery is detected.
• The End-of-Charge switch and Stage Select switch have no function.
• The Equalize push button has no function.
• The output voltage of the Power Supply is set to the Float Voltage. This value can be
changed using PowerWizard. For more information, see the PowerWizard manual.
BATTERY CHARGER MODE
In Charger mode, the LED indicators show the amount of current being supplied to the
battery. This current drops and the battery voltage rises as charging nishes.
75
BLINKING
CHARGING CURRENT
60-84%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CHARGING COMPLETE
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CHARGING CURRENT
1-10%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CHARGING CURRENT
40-59%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CHARGING CURRENT
>85%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CHARGING CURRENT
11-39%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
8

1. Connect the unit to the load and AC power source.
2. Press the Power Button on the unit’s front panel.
3. The charger will go through its startup sequence. All 6 microprocessor-controlled LEDs
ash red and then green. When the Power Button starts glowing, the sequence is
complete.
4. Press and hold the Power Button until you hear two beeps,to change the unit to Power
Supply mode. The unit will remain in Power Supply mode until switched back to Charger
mode, even if it is turned off.
5. To change the unit back to Battery Charger mode, press and hold the Power Button until
you hear one beep.
POWER SUPPLY MODE
In Power Supply mode, the LED indicators show show the amount of current being
drawn by the load(s).
75
BLINKING
CURRENT > 11-39%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CURRENT = 100%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CURRENT >85%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CURRENT > 40-59%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CURRENT < 10%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CURRENT > 60-84%
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
9

Installation
MOUNTING
When mounting your unit, take the
following into consideration:
• The indicator LEDs and front panel
controls should be easy to see and
access.
• There are at least 2 inches of clear-
ance all around the charger for air
circulation and heat dissipation.
• The battery should be close to the
charger to easy connection and to
prevent trampling of the wiring.
• If there is possibility of water drippage, such as if the charger is in a marine environment,
install the optional drip shield above the unit.
European Plug
Brown - AC Hot / Phase 1
Blue - AC Neutral / Phase 2
Green/Yellow - Ground
All connections should be made inside of an appropriate junction box with appropriately rated
circuit breakers used in the circuit panel to feed power to the IBC320. See Specications for
the maximum input current and recommended fuses.
AC INPUT CONNECTION
This unit is equipped with a 5-foot (2.5m) power cable terminating in a NEMA 5-20 Connector
(for North American models) or a CEE7/7 Connector (for European models) to serve as an AC
Input Connection.
If you must extend the power cable be sure to use a 3 conductor grounded type extension
cable. For hard wiring to a source of power, cut off the plug, and strip the wires as necessary.
The wire colors are as follows:
North American Plug
Black - AC Hot
White - AC Neutral
Green - Ground
10

DC OUTPUT CONNECTION
This unit is equipped with a pair of Phoenix VDFK Terminal block connectors to serve as a DC Output
connection for connection to battery banks. The connection can support up to two connected battery
banks. The polarity for these connections can be found on the unit’s front panel label.
CAUTION: IF YOU ARE CHARGING TWO BANKS OF BATTERIES, THEY MUST SHARE
A COMMON GROUND!
Connector Color Polarity
Red Battery Positive Output
Black Battery Negative Output
CAUTION: DO NOT CONNECT THE BATTERY IN THE REVERSE POLARITY!!
This will activate the reverse connection protection which will blow the output fuses inside the unit
in order to protect the device.The unit will be inoperable until these fuses have been replaced.
Max. Output Current 24.00 A 15.00 A 9.30 A 5.90 A 3.70 A
American Wire Gauge #8AWG #10AWG #12AWG #14AWG #16AWG
Max. Output Current 2.30 A 1.50 A 0.92 A 0.58 A 0.23 A
American Wire Gauge #18AWG #20AWG #22AWG #24AWG #28AWG
IMPORTANT: OUTPUT CONNECTION WIRING USED MUST BE APPROPRIATELY
RATED FOR THE EXPECTED OUTPUT CURRENT. See specications or your unit’s label for
the maximum output current and the table below for usable wire gauges.
11

AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
Connection
Conguration Mode
1. Connect the charger to the batteries as indicated
under Installation.
2. Check the POL LED on the front panel. If it is glow-
ing red, the battery is connected in reverse polarity.
Correct the connection to the battery (The red terminal
should go to Positive and black to Negative).
3. Once the POL LED is off, connect the charger to the AC
power source. The AC LED should start glowing green.
This indicates that the charger is receiving power from
the AC source and that its internal power supply is
working.
1. Press and hold the Program (PRG) button for three seconds until you hear a beep and the
DEV LED starts blinking. This indicates that the unit is in Conguration mode.
2. Press the Program (PRG) button to cycle through the parameters you can program. The pa-
rameter which you programming can be determined by which bottom row LED is blinking.
If the DEV LED is
blinking, you are
programming
the Battery Type
parameters.
If the FLT LED is
blinking, you are
programming the
Default Battery
Temperature
parameters.
If the BAT LED is blinking, you are
programming the Current Limit
parameters.
3. Press the Select (SEL) button to cycle through the settings for each parameter. The setting
can be determined by the combination of top row LEDs glowing.
After turning the charger on, it will immediately begin charging any connected batteries with
its pre-programmed parameters. These parameters can be accessed and changed through
Conguration mode.
TO ACCESS CONFIGURATION MODE:
CONNECTION INDICATORS
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
AC PRESENT
BATTERY POLARITY REVERSED
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
12

BATTERY TYPE
The Battery Type parameters controls
the type of charging prole that the
unit will use to charge the battery.
Different types of batteries have
different optimal charging voltages
and currents due to their construction
and chemical composition. This
unit is pre-programmed with four
common battery types.
• Flooded Lead-Acid
• Absorbed Glass Mat (AGM)
• Gel Lead-Acid
• Lithium Ion (Li-on)
You can create your own custom
charging prole using PowerWizard.
For more information, see the
PowerWizard manual.
CURRENT LIMIT
The Current Limit parameters
controls the unit’s maximum charging
current. Depending on the size and
type of your batteries, this unit’s
standard maximum current may
be more than what is optimal or
recommended. Refer to your battery
manufacturer’s documentation
to determine its maximum safe
charging current.
If needed, the unit’s maximum
charging current can be reduced to
25, 50 or 75 percent of the standard
maximum rating.
BLINKING
FLOODED LEAD ACID (DEFAULT)
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
BATTERY TYPE INDICATORS
GEL LEAD ACID
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
LITHIUM ION
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
ABSORBED GLASS MAT
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
25% OF MAX CURRENT
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CURRENT LIMIT INDICATORS
75% OF MAX CURRENT
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
DEFAULT CURRENT (100%)
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
50% OF MAX CURRENT
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
BLINKING
13

The Default Battery Temperature
parameters controls the charger’s
estimated value of the battery
temperature. The optimal charging
voltage of a battery will decrease
as its temperature increases. The
charger uses this value to calculate
its charging compensation if there
are no battery temperature sensors
installed and it cannot obtain real-
time data.
The three settings are 5°C, 21°C
and 38°C and Auto. In Auto, the
charger measures its own internal
temperature during startup and
estimates the batteries to be the
same. If the charger detects the
battery temperature sensor(s) is/are installed, their readings will take precedence.
DEFAULT BATTERY TEMPERATURE
75
BLINKING
DEFAULT COLD (5°C/41°F)
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
DEFAULT AUTO
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
DEFAULT HOT (38°C/105°F)
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
DEFAULT WARM (21°C/70°F)
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
DEFAULT BATTERY
TEMPERATURE INDICATORS
To restore the charger to its factory settings, press and hold both the Program (PRG) and
Equalize (EQL) buttons for 10 seconds until you hear multiple beeps.
FULL RESET
To save your settings and exit Conguration mode at any point, press and hold the Program
(PRG) button until you hear a one second beep.
To exit without saving, simply press then Power Button to turn the unit off.
NOTE: If 60 seconds passes and no button is pressed, the charger will automatically exit
Conguration mode without saving any settings.
SAVING AND EXITING
14

Using the two switches between the Program and Select buttons on the front panel, you can
select whether a 2-stage or 3-stage charging prole is used to charge the batteries and control
the battery charger’s behavior when the charging cycle ends.
Front Panel Adjustments
The End-of-Charge (EOC) select switch controls the charger’s behavior after it nishes
charging the battery/ batteries.
SETTING THE SWITCH TO REST:
• Causes the unit to remain in rest mode after nishing the recharge cycle. The charger
will remain like this until it detects that the battery voltage has dropped <90% of the
rated voltage. It will then initiate a new recharge cycle.
• The charger will also initiate a new recharge cycle if power to the unit is disconnected or
cycled.
• This EOC Select Switch MUST be in the Rest position for the unit to meet the California
Energy Commission regulations.
SETTING THE SWITCH TO FLOAT:
• Causes the unit to maintain the battery at the oat voltage indenitely. This will ensure
that the battery is always fully recharged and ready for use.
• A new recharge cycle will only be initiated if the charger is proving its full rated current
to keep the battery at oat, or if the power is disconnected or cycled.
END-OF-CHARGE SELECT
15

• The battery is charged at a constant
current (higher than in two-stage)
until the battery’s voltage reaches
the absorption voltage.
• Then the charging current
diminishes as necessary to
maintain the battery at that voltage.
• Once the current drops to 10%,
the charging cycle is complete.
The unit switches to keeping the
battery at the oat voltage and will maintain the battery at full charge until needed.
•Three-stage charging is faster than two-stage, however the battery is subjected to higher
voltages and currents. Three-stage charging is not recommended for charging loaded batteries
because the unit cannot differentiate between current going to a load connected to the battery
and current being absorbed by the battery; this can cause overcharging.
Charging Proles
This unit has both two-stage and three-stage charging capability. You can choose which
charging prole is used during operation by using the Stage Select switch on the front panel.
Below are explanations of the two proles:
•The battery is charged at a constant
current until the battery’s voltage
reaches the oat voltage.
•Then the charging current
diminishes as necessary to
maintain the battery at that voltage.
• Once the current drops to 10%, the
charging cycle is complete. The
unit will maintain the battery at
full charge until needed.
•Two-stage charging is gentler on the battery since the battery is subjected to lower voltages
and currents than in three-stage. In addition, a reasonable load can be connected to the
battery without affecting the charger’s ability to keep the battery at full charge.
TWO-STAGE CHARGING
THREE-STAGE CHARGING
16

Equalize Cycle
If a battery’s cells are left discharged for too long, sulfate crystals can form on the plates
interfering with their conductance. This reduces the battery’s capacity and recharging ability.
An equalize cycle is a deliberate overcharge of the battery at high voltage (110% of oat
voltage) and low current (10% of standard output) to force undercharged cells to match charge
of the good cells in the battery.
An equalize cycle should only be performed once every six months as it is hard on the good
cells of the battery and can cause water loss in non-sealed batteries.
DANGER: AN EQUALIZE CYCLE CAN ONLY BE PERFORMED IN A WELL
VENTILATED AREA. Hydrogen gas is a normal by-product of the cycle and is explosive at
concentrations greater than 4%.
CAUTION: BATTERY TEMPERATURE SENSOR MUST BE USED. DURING EQUALIZE
A battery temperature sensor must be connected and installed at the battery. Careful
temperature monitoring is required during the equalize cycle. Failure to do so can result in
severe damage to the battery!
TO PERFORM AN EQUALIZE CYCLE
1. Connect the battery temperature sensor to the unit
and install the sensor at the battery as indicated in
Installation.
2. The charger must be in battery charger mode and not
power supply mode.
3. Push the Equalize button on the front panel. The
button is recessed to prevent accidental operation; a
ballpoint pen can be used to access it.
4. The EQUALIZE LED will glow green indicating the
beginning of the equalize cycle. If the battery charger
is currently charging a battery, the EQUALIZE LED
will blink green. Once the charging cycle is complete,
the EQUALIZE LED will glow green
5. Three hours later, the Equalize cycle will end and the
EQUALIZE LED will turn off. The cycle will also end if
the charger detects that the battery temperature has
reached 40°C or higher.
6. Afterwards, the charger will maintain that battery at
either standby or rest depending on the position of
the End-of-Charge switch.
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
EQUALIZING
EQUALIZE PENDING
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
EQUALIZATION
INDICATORS
17

Battery Temperature Sensor
This unit is supplied with one battery temperature sensor. This sensor communicates the
temperature of the battery to the charger and is required to access the charger’s voltage
temperature compensation, batttery over temperature alarm and equalize cycle functions.
BATTERY TEMPERATURE SENSOR CONNECTION
This unit is equipped with 2 RJ45 Telephone Jack connector to connect to up to two battery
temperature sensor(s).
There are multiple ways to install the sensor at the battery. Regardless of which method you
use, the sensor must be rmly secured to the battery. The sensor should not lose physical
contact with the battery at any point in the charging cycle.
TO INSTALL THE SENSOR AT THE BATTERY, YOU MAY:
• Slide the sensor between the side of the battery and wall of the battery platform so it
sits ush.
• Place the battery so it is sitting on top of the sensor to hold it in place.
• Apply a small amount of silicone RTV sealant to the sensor and stick it to the top of the
battery.
VOLTAGE TEMPERATURE COMPENSATION
Heat is a normal by-product of the charging cycle. However, excessive heat can cause
overcharging, damaging the battery. With a battery temperature sensor installed, your battery
charger will automatically reduce the charging voltage to compensate for rising temperature.
The ambient battery temperature is set to 77°F (25°C). For each degree above 77°F (25°C),
the charger will reduce the charging voltage by a small amount. See Specications for
the temperature compensation coefcient specic to your unit. You can adjust the voltage
temperature compensation and the temperature compensation range using the free-to-
download software PowerWizard.
Pictured: An Battery Temperature Sensor (B-TEMP)
18

Maintenance
Dry Contact Relay
This charger requires no maintenance other than the occasional wipe down to remove dust
that could reduce its ability to dissipate heat. Carefully blow air through the cooling vent to
remove any dust buildup inside the unit.
The charger can be tted with a 1 amp dry contact relay to indicate charger status to a
monitoring system. It has both a normally-open and normally-closed contact which changes
state depending on the presence or absence of charging voltage on the output and is
independent of the microprocessor.
If the charger is producing voltage on the output, the normally closed contact will be closed
and there will be an electrical connection between NC and COM. If the voltage on the
output of the charger goes to zero, the contact will change state. The Normally Open contact
operates exactly in the reverse of the Normally Closed contact.
19

Troubleshooting
The IBC320 is designed to provide years of reliable service and to auto-recover in the event of
an operational failure. In the event of malfunction, the unit is tted with eight LED indicators
and an audible alarm to help diagnose the cause of the issue. Below is a list of potential
issues, and how to repair them.
NO AC POWER DETECTED
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
No AC Power Detected
The charger is not detecting any AC power. Using a
multimeter, check that the power source is working.
Check that the input fuse hasn’t blown. If the fuse is
open, replace it with the recommended fuse listed on the
label and reconnect to AC power. If the AC LED still does
not glow, then there is likely an internal failure and the
charger will have to be returned for service.
Low Input Voltage Indication
The charger has detected that the input voltage has
dropped below the minimum level needed for normal
operation. The charger will shut off and wait for the
voltage to recover.
BATTERY OVERTEMP
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CHARGER LO VOLTAGE
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
CHARGER OVERTEMP
AC
POL
TEMP
25
DEV
CH
75
SVC
FLT
LO V
BAT
50
EQ
PS
Charger Over Temperature Indication
The charger has detected that its internal temperature
is above safe operating limits. The charger will shut
off until the temperature has returned to normal limits.
If this happens frequently, the charger may need to be
remounted for better air circulation.
Battery Over Temperature Indication
The charger has detected that the battery is too hot to
safely charge (>43°C/110°F) and shut off. The charger
will automatically reconnect when the battery cools to a
safe temperature (<32°C/90°F). If this happens frequently,
particularly in relatively normal ambient temperatures,
the battery is likely damaged or defective and should be
replaced.
FAULT INDICATORS BLINKING
20