Unipower ARR-M Series User manual

ARR-M Series
Product Manual
PM990.7800.00, Rev. 4
Revision History
UNIPOWER, LLC
65 Industrial Park Rd
Dunlap, TN 37327
Phone: +1-954-346-2442
Toll Free: 1-800-440-3504
Web site – www.unipowerco.com
Rev PCO#
Checked/Approved
& Date
4
45404
W.Deakins 7/10/19

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BATTERY CHARGER USER’S MANUAL

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Table of content
PART–1:INSTALLATION.....................................................................................................................................................1
1.INTRODUCTION...........................................................................................................................................................2
2.IMPORTANTSAFETYINSTRUCTIONS............................................................................................................................2
3.STORAGE/MAINTENANCEDURINGSTORAGE.............................................................................................................2
4.PLACEMENTANDINSTALLATION.................................................................................................................................2
5.VENTILATIONANDCOOLING.......................................................................................................................................3
6.ELECTRICALCONNECTIONSANDWIRING.....................................................................................................................4
7.POWERINGUP............................................................................................................................................................4
8.SYSTEMPOWERINGOFFPROCEDURE..........................................................................................................................4
PART–2:THEORYOFOPERATION........................................................................................................................................5
1.THEORYOFOPERATION..............................................................................................................................................6
1.1LCDDISPLAYANDKEYPAD...................................................................................................................................................6
1.2GETTINGFAMILIARWITHBATTERYCHARGERLCDINTERFACE............................................................................................6
2.ACCESSINGMENUVIAKEYPAD...................................................................................................................................7
3.CHARGINGMODES......................................................................................................................................................8
3.1“ACOUT”MODE..................................................................................................................................................................8
3.2“FLOAT”MODE......................................................................................................................................................................8
3.3“FLOATCURRENTLIMIT1”MODE.............................................................................................................................................8
3.4“EQUALIZE”MODE.................................................................................................................................................................8
3.5“EQUALIZECURRENTLIMIT2”MODE........................................................................................................................................9
4.MANUALACTIVATIONOFEQUALIZEORFLOATMODE.................................................................................................9
5.ACINPUTVOLTAGE(S)ANDCURRENT(S)(OPTIONAL)................................................................................................10
6.BATTERYCURRENT(OPTIONAL)................................................................................................................................11
7.MENUANDCONFIGURATIONPARAMETERS..............................................................................................................11
7.1THEMENU............................................................................................................................................................................12
7.2LEVEL‐0(READINGS)...............................................................................................................................................................12
7.2.1Events format and Reset procedure ............................................................................................................................13
7.2.2Readings......................................................................................................................................................................17
7.2.3Relay test.....................................................................................................................................................................18
7.2.4LED Test .....................................................................................................................................................................18
7.2.5LCD Power Save.........................................................................................................................................................19
7.2.6LCD Contrast..............................................................................................................................................................19
7.2.7Run / Stop Battery Capacity Test (optional) ...............................................................................................................20
7.2.8Ampere-Hour meter Synchronization (optional).........................................................................................................20
7.2.9Run / Stop Formation Mode (optional).......................................................................................................................21
7.2.10Language.....................................................................................................................................................................23
7.3LEVEL‐1(ADJUST)..................................................................................................................................................................23
7.3.1Control........................................................................................................................................................................25
a.SettingVoltageandCurrentforFloatMode...................................................................................................................................25
b.SettingvoltageandcurrentforEqualizeMode...............................................................................................................................26
c.EqualizationStartparameterAdjustments(optional)....................................................................................................................27
i.ManualEqualize(optional).............................................................................................................................................................27
ii.PeriodicalEqualize(optional)......................................................................................................................................................28

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iii.LowVoltageEqualize(optional)..................................................................................................................................................29
iv.LowCapacityEqualize(optional).................................................................................................................................................30
v.ChargerEqualizeStart(optional).................................................................................................................................................31
vi.ACFailEqualize(optional)...........................................................................................................................................................32
vii.RefreshEqualize(optional)..........................................................................................................................................................33
viii.RemoteEqualize(optional).........................................................................................................................................................34
ix.CurrentLimitEqualize(optional).................................................................................................................................................35
d.EqualizeTermination(optional)......................................................................................................................................................36
i.Stopping Equalize after a preset delay: Security Time....................................................................................................................36
ii.Voltage Post-Charge Mode (optional).........................................................................................................................................37
iii.Current Post-Charge Mode (optional)..........................................................................................................................................38
iv.Temperature Post-Charge Mode (optional).................................................................................................................................39
v. Capacity Post-Charge Mode (optional)........................................................................................................................................40
e.FormationModeparameteradjustments(optional)......................................................................................................................41
f.LoadSharing(optional)...................................................................................................................................................................42
g.VoltageTemperatureCompensation(optional).............................................................................................................................44
g-1. Sensor Installation...........................................................................................................................................................................44
g-2. Temperature compensation menu and examples (This option is disable in equalization mode).....................................................44
7.3.2Alarms.........................................................................................................................................................................47
a.ResetAlarms:AudibleandAlarmMessages...................................................................................................................................48
b.Alarmadjustmentsandconfiguration.............................................................................................................................................49
i.Battery High Voltage Alarm...........................................................................................................................................................50
ii.Battery Low Voltage Alarm.........................................................................................................................................................51
iii.Positive Ground Fault Alarm.......................................................................................................................................................52
iv.Negative Ground Fault Alarm.....................................................................................................................................................53
v.AC Fail Alarm.............................................................................................................................................................................54
vi.Rectifier Fail Alarm.....................................................................................................................................................................55
vii.Rectifier High Voltage Alarm *...................................................................................................................................................56
viii.High Voltage Shutdown Alarm *.............................................................................................................................................57
ix.Rectifier Low Voltage Alarm *...................................................................................................................................................58
x.End of Discharge Alarm (2nd Low Volt Level)*..........................................................................................................................59
xi.Charger High Temperature Alarm *............................................................................................................................................60
xii.Charger Low Temperature Alarm *.............................................................................................................................................61
xiii.Battery High Temperature Alarm **........................................................................................................................................62
xiv.Battery Low Temperature Alarm **........................................................................................................................................63
xv.AC High Voltage Alarm **.........................................................................................................................................................64
xvi.AC Low Voltage Alarm **......................................................................................................................................................65
xvii.High Ripple Alarm *................................................................................................................................................................66
xviii.Rectifier Low Current Alarm *................................................................................................................................................67
xix.Rectifier High Current Alarm *................................................................................................................................................68
xx.Battery Low Current Alarm **....................................................................................................................................................69
xxi.Battery High Current Alarm **................................................................................................................................................70
xxii.Battery High Capacity Alarm **..............................................................................................................................................71
xxiii.Battery Low Capacity Alarm **...............................................................................................................................................72
xxiv.Equalize Alarm *......................................................................................................................................................................73
xxv.PCOM Alarm **......................................................................................................................................................................73
xxvi.PM Alarm **............................................................................................................................................................................74
xxvii.Frequency Alarm *...................................................................................................................................................................74
xxviii.Unbalanced Battery Alarm **.................................................................................................................................................75
xxix.Temperature Probe Alarm **...................................................................................................................................................76
xxx.Battery Discharge Alarm **.....................................................................................................................................................77
xxxi.Common Relay and Audible Alarm configuration **..............................................................................................................78
7.3.3System Clock **..........................................................................................................................................................79
8.CURRENTTEMPERATURECOMPENSATION«OUTPUTCURRENTDERATING»(OPTIONAL).........................................81
9.REMOTESENSING.....................................................................................................................................................81
10.TROUBLESHOOTING..................................................................................................................................................82
11.REGULARPREVENTIVEMAINTENANCE......................................................................................................................85

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FIGURELIST.......................................................................................................................................................................86
ACRONYMLIST..................................................................................................................................................................88
LCDMESSAGESLIST...........................................................................................................................................................90
APPENDIXES......................................................................................................................................................................92

MCEnPC23-REV.2.4 Page 1
PART – 1 : INSTALLATION
INSTALLATION

BATTERY CHARGER USER’S MANUAL PART-1:INSTALLATION
MCEnPC23-REV.2.4 Page 2
1. INTRODUCTION
This user manual contains important technical instructions to be followed by qualified personnel responsible for the installation,
start-up, maintenance operations and knowledgeable on batteries and safety requirements/precautions involved. We recommend
this manual to be read attentively to ensure safe and reliable operation of this equipment.
Should you require any assistance, please call our service department.
2. IMPORTANT SAFETY INSTRUCTIONS
Keep these instructions in a safe place: this manual contains important safety and operating instructions
AC and DC currents are present in this system even with indicators and breakers are in “OFF” position.
Before performing any maintenance on this system, make sure that the battery and the AC power are disconnected.
Only experienced and qualified personnel must perform maintenance.
Electrostatic sensitive components are used in this equipment. Proper ESD (electrostatic discharge) procedures must be
followed to prevent any severe damage to electronic components.
Working in the vicinity of Lead Acid or Nickel Cadmium batteries is dangerous: batteries generate explosive gases
during normal operation. Therefore, never smoke or allow an open spark or flame in the vicinity of the battery or
engine.
To reduce risk of battery explosion, follow these instructions and those on the battery.
Never charge a frozen battery.
Do not expose charger/rectifier to rain or snow unless it has the appropriate NEMA/IP rating.
Do not install or operate chargers if they have been dropped or damaged.
Refer to your local/national electrical code for installation
3. STORAGE / MAINTENANCE DURING STORAGE
If the charger/rectifier has to be stored before commissioning, it should be stored in a dry place, in the ambient temperature
within –40oF to 185oF (-40oC to 85oC), not exposed to direct sunlight, on the same pallet, protected against moisture, dust, dirt
and damage. Do not use the charger/rectifier as a stocking shelf.
Remember that storing the charger/rectifier for a long period (5 years or more) can deteriorate performance of the filter
capacitors and can cause also contact oxidation for relays, breakers, contactors… Filter capacitors shall be replaced after storing
the charger/rectifier 5 years or more.
Please contact the manufacturer for capacitor specifications and installation.
Warning
For batteries and other accessories (UPS…), please refer to the specific manufacturer indications for battery periodical
recharge and powering up procedure after storage.
4. PLACEMENT AND INSTALLATION
FOR INSTALLATION, PLEASE REFER TO NATIONAL AND/OR LOCAL ELECTRICAL CODES.
Chargers/rectifiers are very heavy. To prevent personal injury or equipment damage, use appropriate lifting devices and execute
extreme care while handling the equipment.
The following instructions are very important to satisfactory operation. Changing the settings voids the warranty.

BATTERY CHARGER USER’S MANUAL PART-1:INSTALLATION
MCEnPC23-REV.2.4 Page 3
Warning
Battery application and maintenance:
Your battery is a crucial back up for your critical application. Special care and appropriate safety and maintenance
procedures must be implemented.
Please refer to the battery manufacturer instructions and the applicable battery installation, maintenance, testing and
replacement standards for stationary application in order to optimize the life of the battery as well as to determine when
the battery should be replaced.
VRLA case (Lead Acid battery incorrectly called "maintenance free"): As this battery is sealed not allowing visual
inspection or water addition, dry out and thermal runaway inside the battery can happen resulting to an unpredictable
failure occurrence. Great care in installation, maintenance, testing and replacement is required to insure availability of
backup power.
The manufacturer instruction, your local standards and the following standards can be your guide to help to apply
proper procedures: (other standards may apply).
IEEE484: IEEE Recommended Practice for Installation Design and Installation of Vented Lead-Acid Batteries for
Stationary Applications.
IEEE450: IEEE Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for
Stationary applications.
IEEE1188: IEEE Recommended Practice for Maintenance, Testing, and Replacement of Valve-Regulated Lead-Acid
(VRLA) Batteries for Stationary Applications.
IEEE1106: IEEE Recommended Practice for Installation, Maintenance, Testing and Replacement of Vented Nickel-
Cadmium Batteries for Stationary Applications.
5. VENTILATION AND COOLING
The rectifier/charger is rated to better perform within 18F (–10C) and 122F (+50C) temperature range.
To calculate the required air displacement (exchange) volume, please use the following equation:
kr
T
Tk
H
TT
e
BTUV
0
125.0
V= air flow: [cubic meter/hour]
BTU: Total dissipated heat
Tr: Maximum allowed room temperature [K] {i.e. 50C = 323K]
Tk= Temperature of input cooling air
To= 273 K
H= Altitude [km]
WARNING!
Avoid placing the system in direct sunlight
The adequate ventilation and safe access require that the following clearances are respected:
3 in. (10 cm) on the sides and top;
3 feet (1 meter) in front of the unit;
DO NOT INSTALL OVER COMBUSTIBLE SURFACES;
Should seismic conditions require a more secure installation the unit can be bolted to the floor. Four (4) holes are provided for
this purpose.

BATTERY CHARGER USER’S MANUAL PART-1:INSTALLATION
MCEnPC23-REV.2.4 Page 4
6. ELECTRICAL CONNECTIONS AND WIRING
Before connecting the battery charger ensure that:
The battery is disconnected (if applicable)
The circuit breakers are OFF
The relays, fuses and circuit boards are installed
The unit is wired in accordance with the instructions (refer to the wiring connections and electrical diagram)
The appropriate cable sizes are very important. The nameplate provides the essential information regarding the input and output
voltages and currents.
Use a branch feeder (circuit breaker or fused disconnect switch), sized to the maximum input current.
Refer to your Local or National Electrical Code for LOCKOUT, WIRE GAUGE and GROUNDING instructions.
The ampacity of the power cables must be sized to the maximal correspondent current.
Correct voltage and polarity are of critical importance. Check all connections for tightness and polarity. Connect battery (if
applicable to the output terminals observing its polarity.
7. POWERING UP
After the installation of all wires is completed and has been double checked, the unit may be powered up as follow:
Before connecting a load to a charger, compare the critical characteristics of the load against those of the
charger (i.e. measure ripple, line-neutral voltage, positive-neutral voltage).
Keep a log of the values entered for VFLOAT and VEQUALIZE values entered, alarm messages, alarm and SCR
blinking LEDs, etc.
All input and output breakers must be in ”OFF” position
Apply power to the equipment from a source
Turn on AC breaker (if supplied) (”ON” position)
Wait 30 seconds
Turn on DC breaker (if supplied) (”ON” position)
Green LED must light up
Wait 5 seconds until the LCD display will show the system’s output voltage and status
The system soft starts by rising the output current and the voltage
If an adjustment or calibration of the unit is necessary, refer to the field programming section for more information.
8. SYSTEM POWERING OFF PROCEDURE
Open the DC breaker (if supplied) (OFF position);
Open the source panel’s AC breaker (if supplied) (OFF position);
Open the AC breaker feeding the powering the battery charger from external distribution panel;
If work inside a unit has to be performed, wait 5 minutes to let the filter capacitors to discharge or use
bleeding resistors of the correct rating to discharge the capacitors;
After following all previous steps, the battery charger can be considered de-energized.

MCEnPC23-REV.2.4 Page 5
PART – 2: THEORY OF OPERATION
THEORYOFOPERATION

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 6
1. THEORY OF OPERATION
The battery charger provides a fully regulated and Isolated DC output from the main AC input. The LCD show
continuously the battery charger status: DC Voltage, DC current, alarms ….
1.1 LCDDISPLAYANDKEYPAD
F1 F2 F3 F4
CONTROL, ALARM & COMMUNICATION
136.2V 10.5A
Equalize
A B C D
OR
ONAC
ALARM(S)
Each key corresponds
to above function as
described on the
following figures
Figure 1 : Battery charger home screen.
The LCD display and keypad provide very flexible and user friendly interface. The standard display is a high
visibility backlit two-line LCD display. Four (4) long life membrane switches are used as the keypad buttons.
1.2 GETTINGFAMILIARWITHBATTERYCHARGERLCDINTERFACE
All adjustable values and readings are displayed on the first line. Ex.: alarm activation status, voltage and current
readings…
On the second line, soft keys are used: each keyboard button’s function is displayed. The assignment of a button to a
function can change as needed by different menus or at different levels of access. The Red LED will blink when any
alarm occurs. A corresponding alarm message will also be displayed on the second line. If more than one message
is to be displayed then the messages will scroll sequentially.
All settings can be saved individually. The lit green LED indicates that the AC is on. The LCD back lighting will
turn off after 5 min of inactivity, if the power save function is selected. It will turn back on whenever a button is
pressed or any alarm occurs. The accuracy of all readings is 0.5% +/- 1digit.

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 7
2. ACCESSING MENU VIA KEYPAD
All gray buttons in all figures inside this manual mean that this button is pressed and activated. When more than one
button is gray, this means that we have a choice to press any button on keypad.
WARNING!
All values indicated in the following figures are given as examples. These values don’t apply necessarily
to your system. For more information about the real values and options set for your application, please
refer to the test report at the end of this manual.
On power-up the following readings appears on the screen:
F1 F2 F3 F4
136.2V
Equalize
10.5A
A B C D
Figure 2 : Home screen example after turning ON the battery charger.
From that point, if you press any button once from F1 to F4 (or A to D with other keypad), you reach the menu
screen:
EqFltMode
Ok
Next
P
r
Exit
Figure 3 : LCD Display after pressing any button.
From this menu, buttons F2 and F3 (B and C with other keypad) allow us to navigate all other menus and
sub-menus, adjustments and enable or disable functions. A detailed description of all menus and sub-menus will be
provided in the following paragraph.
Important!
All adjustments of your battery charger are made in our service department. Some sub-menus are password
protected. Only authorized personal will be able to access these sub-menus.

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 8
3. CHARGING MODES
3.1 “ACOUT”MODE
In the case of a power outage, if the AC breaker is open or if the control board fuse has blown, an AC fail alarm will
be generated, warning you that one of the cases has occurred. In this mode, the rectifier waits for the AC input to be
reconnected to the charger or the control board.
Note: In this mode, the load will be powered by the battery only.
0.0V
0.0
A
OUTAC
Figure 4 : AC OUT Mode Display.
3.2 “Float”MODE
The Float mode is the default charging mode. It can be run via:
Keypad (manually);
Preset delay (periodically);
External signal (optional);
ModBus RS232 / RS485, or ModBus TCP/IP communication (optional);
DNP3 RS232 / RS485 communication (optional);
The image below shows the LCD display when the charger is in “Float” mode.
Float
132.6V
14.5A
Figure 5 : Float Mode Display.
3.3 “FloatCurrentLimit1”MODE
The maximum Float current is preset at the factory. The image below shows the LCD display when the charger is in
“Float Current Limit” mode.
Limit1Current
130.5V
20.0A
Figure 6 : Float Current Limit Mode Display.
3.4 “Equalize”MODE
Some batteries need to be periodically Equalized. Basically, Equalization refers to a controlled charging at a higher
voltage than Float level. Equalize Mode can be run:
Via Keypad (manually);

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 9
Via a preset delay (periodically);
Via external signal (optional);
Via ModBus RS232 / RS485, or ModBus TCP/IP communication (optional);
Via DNP3 RS232 / RS485 communication (optional);
If DC Output voltage is within a preset value (Low Volt Equalize: optional);
If battery capacity is within a preset value (optional);
After an AC Failure during a preset delay (optional);
If the battery charger is within a current limit during a preset delay (optional);
The image below shows the LCD display when the charger is in “Equalize” mode.
Equalize
136.2V
9.5A
Figure 7 : Equalize Mode Display.
3.5 “EqualizeCurrentLimit2”MODE
The maximum Equalize current is preset at the factory. The image below shows the LCD display when the charger
is in “Equalize Current Limit” mode.
Limit2Current
128.5V
20.1A
Figure 8 : Equalize Current Limit Mode Display.
4. MANUAL ACTIVATION OF EQUALIZE OR FLOAT MODE
When ordered, the charger can be configured for the manual “Equalize” mode. Please refer to your order and the
battery manufacturer to confirm the Equalize requirement. If “Equalize” function does not appear on the LCD, then
this automatic function has been disabled at the factory. Contact the agent or the manufacturer for more information.
Switching the charger from “Float” to “Equalize” mode can be done manually through the menu. Other equalizing
options are also included below. The equalizing time is adjustable between 1 hour and 8191 hours.

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 10
120.5V
10.2A
Equalize
MODE
EqFlt
Ok
Next
Exit
P
r
Float
Exit
Eq
Float
Float Exit
Eq
Equalize
Float Exit
Eq
Figure 9 : Enabling Manually Float or Equalize Mode.
5. AC INPUT VOLTAGE(S) AND CURRENT(S) (OPTIONAL)
If this option is ordered, the AC Input Voltage and Current are displayed on the LCD.
VAC1
136.4V
20.0
A
120.5V
IAC1
136.4V 20.0
A
80.3A
Figure 10 : AC Input Voltage and Current Readings.
In case of 3 phase units, the phase voltage and current readings will be scrolling on the LCD as follow: VAC1,
VAC2, VAC3, IAC1, IAC2 and IAC3.

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 11
6. BATTERY CURRENT (OPTIONAL)
The current flowing IN or OUT of the battery will be displayed on LCD if this option is enabled. Negative (-) sign
will be displayed in case of battery discharging.
IBatt
136.2V
20.1A
23.3A
IBatt
136.1V
20.0
A
80.4A-
Figure 11 : Battery Current Display.
7. MENU AND CONFIGURATION PARAMETERS
The battery charger is controlled by a 32-bit Microcontroller installed on the control board. All parameters are saved
into a EEPROM. The settings are configured into two categories:
1. Charger active parameters such as the alarm settings, O/P voltage and current, etc.
2. Charger active configuration: Temperature compensation, load sharing (if ordered). The calibration settings
are reserved for factory use only.
The battery charger allows users to adjust and visualize the following parameters:
DC Output voltage and current;
Equalize operation mode;
Float operation mode;
Charger current limit mode;
Battery voltage remote sensing;
Alarm adjustments;
Temperature compensation;
Load sharing;
250 events monitoring (date and time stamp are optional);
Reset alarms and relays;
Measures :
AC Frequency.
Rectifier voltage.
Voltage between positive output and chassis.
Voltage between negative output and chassis.
Remaining time for Equalize.
Elapsed time for Equalize.
Charger temperature.
Battery temperature (optional).
Battery Voltage discharge test (optional).
Battery current discharge test (optional).
Battery discharge time (optional).
Relay test.
LCD contrast adjustment.

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 12
Battery Test (optional).
Formation test (optional).
Language selection.
DNP3 and Modbus Communication (optional).
Battery charger parameter adjustment and visualization.
Pre-programmable 4 messages, to be displayed on LCD (Refer to ModBus manual).
Four external command via a four normally open contact (optional):
Display of the four pre-programmable messages (Refer to ModBus manual).
Switching to Equalize mode.
Switching to Float mode.
Reset relays.
Run or Stop the battery charger.
7.1 TheMenu
The menu is divided into three levels: Level-0 for Readings, Level-1 for Adjustments and Level-2 for Advanced
Settings.
LEVEL-0 (Readings): This level is directly accessible by the user with no password need. In this level, the user can
perform basic operation of the charger such as:
Run or stop any other operating function as Battery Test;
Read different data such as the Battery Temperature (optional);
Read different events: AC frequency or others;
LEVEL-1 (Adjustments): This level is protected by a password and reserved for charging parameters adjustments
such as float voltage, current, alarms, etc. A user can disable / enable this password in Level 2.
LEVEL-2 (Advanced settings): This level is reserved for the Factory calibration purpose and protected by a
password. This level is to adjust, calibrate, enable or disable different charger functions.
7.2 Level‐0(Readings)
The following figure shows all steps to access Level-0:

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 13
136.4V
50.1A
Alarms?Reset
Ok
Next
P
r
Exit
Ok
Next
P
r
Exit
Ok
Next P
r
Exit
EqFltMode
Readings?Level0
Charger Output
Home Screen
Equalize
This message will appear
only if an alarm is active
This menu will display only if
Equalize mode is Enabled
Press F1(or A) to access
Level0
NextPress
NextPress
A B C D
F1 F2 F3 F4
Figure 12 : Procedure to access Level-0.
7.2.1 Events format and Reset procedure
The latest 250 events are saved in the memory. Please refer to Table-1 for the event index. Please note that if dated
events are required, then a special circuit with a backup battery has to be ordered at the time of placing your
purchase order. Table-1 provide a list of events with associated number

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 14
Events Associated Number
Float mode 1
Equalize mode 2
Current limit mode 3
Formation 4
reserved 5
Battery continuity test running 6
Battery test OK 7
Battery test fault 8
Test problem 9
Battery is under test 10
Battery high voltage 11
Battery low voltage 12
High voltage shutdown 13
Low voltage disconnect 14
Battery High temperature 15
Battery Low temperature 16
Charger high temperature 17
Charger low temperature 18
Positive ground fault 19
Negative ground fault 20
AC fail 21
Rectifier fail 22
Rectifier high voltage 23
Rectifier low voltage 24
AC low voltage 25
AC high voltage 26
High ripple 27
Charger Low current 28
Charger High current 29
Battery Low current 30
Battery High current 31
Battery High capacity 32
Battery Low capacity 33
Faulty communication between PCOM & PC23 34
Faulty communication between PM & PC23 35
Temperature probe alarm 36
Frequency fail 37
Battery discharge alarm 38
Cell defect 39
Battery continuity test fails 40
Table-1
Please, note that some of the above mentioned items can be excluded in your charger depending on your charger
configuration.

BATTERY CHARGER USER’S MANUAL PART- 2: THEORY OF OPERATION
MCEnPC23-REV.2.4 Page 15
The following figure shows the procedure to visualize Events:
F1 F2 F3 F4
F1 F3 F4
F1 F2 F3 F4
Events
ExitPrNextOk
Readings?Level0
F1 F2 F3 F4
10135E03/0804/0
20138E08/0807/0
F2
Press F2 (or B) to visualize next event
Press F3 (or C) to visualize previous event
ExitPrNextOk
A B C D
ExitPrNext1
ExitPrNext250
A B C D
A B C D
A B C D
Figure 13 : Procedure to visualize Events.
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