KraftPowercon PRX Series User manual

KraftPowercon Sweden AB, Hjalmar Petris väg 49, 352 46 Växjö, Sweden, Tel: [phone], Fax: [phone],
www.kraftpowercon.com
You must read this manual before installation, use or work on the product.
This product contains dangerous voltage that when touched can cause electric shock, burns
or death.
The product must be installed by qualified personnel and according to the installation
instructions. Service may only be performed by authorised service personnel. The equipment
may only be opened by qualified personnel. Work in addition to replacing the rectifier modules
may only be carried out when all power has been cut to the equipment and when the mains
breaker has been closed for at least five minutes. The protective covers and contact safety
devices inside the equipment may only be removed by authorised service personnel.
The power must always be disconnected in a safe way before starting any
service/maintenance.
WARNING! Multiple power sources. Dangerous voltage is possible even with mains power
shut off. The panel mains power switch does not give a dead condition.
Manual for
charging rectifier
type PRX
SAFETY INSTRUCTIONS
Dokumentnr: 9-1719-B
Artikelnr: 0001137

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KraftPowercon Sweden AB, Hjalmar Petris väg 49, 352 46 Växjö, Sweden, Tel: [phone], Fax: [phone],
www.kraftpowercon.com
Vi förbehåller oss rätten till ändringar av innehållet utan föregående avisering.

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KraftPowercon Sweden AB, Hjalmar Petris väg 49, 352 46 Växjö, Sweden, Tel: [phone], Fax: [phone],
www.kraftpowercon.com
INNEHÅLL
1PRESENTATION.............................................................................................. 5
2SAFETY INSTRUCTIONS............................................................................... 6
3TECHNICAL DATA ........................................................................................ 7
3.1 ELECTRICAL DATA.............................................................................................................................. 7
3.1.1 Range.................................................................................................................................................... 7
3.1.2 Common electrical input data .......................................................................................................... 7
3.1.3 Common electrical output data........................................................................................................ 7
3.1.4 Electrical data for rectifier module................................................................................................... 8
3.2 Environmental data ................................................................................................................................ 8
3.3 Mechanical data....................................................................................................................................... 8
3.4 Conformity with standards ................................................................................................................... 8
4FUNCTIONAL DESCRIPTION...................................................................... 9
4.1 GENERAL ................................................................................................................................................ 9
4.2 FRONT PANEL ....................................................................................................................................... 9
4.3 RECTIFIER MODULES .......................................................................................................................... 9
4.4 I/O UNIT ................................................................................................................................................ 10
4.5 FUNCTIONS.......................................................................................................................................... 10
4.5.1 General............................................................................................................................................... 10
4.5.2 Float charging ................................................................................................................................... 10
4.5.3 Equalizing charging ......................................................................................................................... 10
4.5.4 Battery circuit test............................................................................................................................. 10
5OPERATION ................................................................................................... 11
5.1 GENERAL .............................................................................................................................................. 11
5.2 MAINS FEED......................................................................................................................................... 11
5.3 OPERATOR PANEL............................................................................................................................. 11
5.4 LIKRIKTARMODULER ....................................................................................................................... 11
5.5 VOLTMETER TERMINALS ................................................................................................................ 12
6INSTALLATION INSTRUCTIONS ............................................................. 13
6.1 SAFETY INSTRUCTIONS ................................................................................................................... 13
6.2 GENERAL .............................................................................................................................................. 13
6.3 STORAGE AND PROTECTION ......................................................................................................... 13
6.4 MOUNTING .......................................................................................................................................... 13
6.5 ELECTRICAL INSTALLATION ......................................................................................................... 14
6.5.1 General............................................................................................................................................... 14
6.5.2 Earthing ............................................................................................................................................. 14
6.5.3 Mains voltage.................................................................................................................................... 14
6.5.4 Battery/Load...................................................................................................................................... 14
6.5.5 Rectifier modules.............................................................................................................................. 15
6.5.6 I/O unit............................................................................................................................................... 15
6.5.7 Battery voltage measurement ......................................................................................................... 15
6.5.8 Mid voltage measurement (option) ............................................................................................... 15
6.5.9 Battery temperature measurement (option) ................................................................................. 16
7COMMISSIONING......................................................................................... 17

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www.kraftpowercon.com
7.1 SAFETY INSTRUCTIONS ................................................................................................................... 17
7.2 PREPERATORY INSPECTION ........................................................................................................... 17
7.3 ELECTRIFICATION ............................................................................................................................. 17
7.3.1 DC....................................................................................................................................................... 17
7.3.2 AC....................................................................................................................................................... 17
7.4 CHECK OF CHARGING VOLTAGE................................................................................................. 18
7.5 CHECK OF SETTINGS......................................................................................................................... 18
7.6 CHECK OF OUTPUTS ......................................................................................................................... 18
8MAINTENANCE............................................................................................ 19
8.1 ANNUAL INSPECTION...................................................................................................................... 19
8.1.1 General............................................................................................................................................... 19
8.1.2 Check of charging voltage............................................................................................................... 19
8.1.3 Check of cooling capacity................................................................................................................ 19
9FAULT TRACING.......................................................................................... 20
9.1 SAFETY INSTRUCTIONS ................................................................................................................... 20
9.2 OTHER FAULT TRACING.................................................................................................................. 20
Bilagor
A DIMENSION DIAGRAM
B CIRCUIT DIAGRAM PRX

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KraftPowercon Sweden AB, Hjalmar Petris väg 49, 352 46 Växjö, Sweden, Tel: [phone], Fax: [phone],
www.kraftpowercon.com
1PRESENTATION
PRX is a family of charging rectifiers in single phase configuration with integrated monitoring
that are designed for wall mounting.
The charging rectifier is constructed using plug-in rectifier modules for simple maintenance
and high flexibility and availability. Its compact design allows it to be used even in confined
spaces. The clear display and well-arranged system of menus of the monitoring unit make it
easy and pleasant to work with.
This description primarily deals with all installation, commissioning, service, maintenance
and technical data and is principally aimed at the personnel who are responsible for these
areas. An equivalent description of the parts of the equipment that relate to the monitoring
unit are detailed in the Manual for monitoring unit type PCM2.
Operation is handled primarily via the monitoring unit described in the Manual for monitoring
unit type PCM2. This is therefore chiefly aimed at the personnel that have the day to day
responsibility for the plant, but also to other personnel who have cause to work with the
charging rectifier.
For a complete description, this manual is to be used together with the description for the
monitoring unit, Manual for monitoring unit type PCM2.
The term “charging rectifier” is replaced henceforth with the shorter term “rectifier”.

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KraftPowercon Sweden AB, Hjalmar Petris väg 49, 352 46 Växjö, Sweden, Tel: [phone], Fax: [phone],
www.kraftpowercon.com
2SAFETY INSTRUCTIONS
This product contains dangerous voltage that when touched can cause electric shock, burns
or death.
For safety reasons the affected personnel are classified according to the following requirements
for specific skills.
Authorised service personnel:
•Have electrical training and adequate experience in avoiding the dangers that electricity
can cause.
•Are certified to meet authority requirements for the work in question.
•Have linguistic skills that ensure the content in this description cannot be
misunderstood.
•Have undergone a product specific training programme for authorised service personnel
that are approved by KraftPowercon Sweden AB.
Qualified personnel:
•Have electrical training and adequate experience to avoid the dangers that electricity can
cause.
•Are certified to meet authority requirements for the work in question.
•Have linguistic skills that ensure the content in this description cannot be
misunderstood.
Installation, service, maintenance and fault tracing may only be carried out by authorised
personnel and in accordance with the installation instructions.
The protective covers and contact safety devices inside the equipment may only be removed by
authorised service personnel.

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www.kraftpowercon.com
3TECHNICAL DATA
3.1 ELECTRICAL DATA
3.1.1 Range
PRX can be equipped with one or two rectifier modules.
PRX
Likriktarmodul
Model
designation
UNOM
IRATED
Mains
power*1
Mains
current*1
Mains
fuse*2
Power
loss*3
Number
of
modules
IRATED
Model
designation
(VDC)
(A)
(VA)
(ARMS)
(A)
(W)
(A)
PRX 24/36
24
36
1150
6
10
160
1
36
PCS 24/36
PRX 24/2x36
72
2300
12
16
310
2
36
PCS 24/36
PRX 24/70
70
2200
12
16
185
1
70
PCS 24/70
PRX 48/18
48
18
1150
6
10
145
1
18
PCS 48/18
PRX 48/2x18
36
2300
12
16
280
2
18
PCS 48/18
PRX 48/50
50
2900
15
20
220
1
50
PCS 48/50
PRX 110/8
110
8
1150
6
10
145
1
8
PCS 110/8
PRX 110/2x8
16
2300
12
16
280
2
8
PCS 110/8
PRX 110/16
16
2200
12
16
170
1
16
PCS 110/16
PRX 110/2x16
32
4400
23
25
330
2
16
PCS 110/16
PRX 110/22
22
2900
15
20
210
1
22
PCS 110/22
PRX 110/2x22
44
5800
30
35
410
2
22
PCS 110/22
PRX 220/10
220
10
2700
14
16
210
1
10
PCS 220/10
PRX 220/2x10
20
5400
28
35
410
2
10
PCS 220/10
*1: max at 195 VAC
*2: recommended value
*3: type at 230 VAC and full load. Also includes monitoring unit.
3.1.2 Common electrical input data
Rated voltage ...............................................120*1/127*1/220/230/240 VAC 1- phase
Frequency .....................................................50 –60 Hz
Power factor ................................................. > 0.99 at 230 VAC, full load
Connection screw terminal block.............. 0.5 –10 mm2
*1: Power derating below 190 VAC.
3.1.3 Common electrical output data
Voltage regulation (static) ..........................<±0.5% of nominal output voltage
Voltage regulation (dynamic)....................<±1% within 3 seconds, 0-100 / 100-10 % load change
Current regulation.......................................<±1% of rated current
Setting range, current limit ........................0 - 100% of rated current
Ripple voltage.............................................. <0.1 %RMS
Ripple current ..............................................<0.1 % of rated current
Efficiency, typical ........................................up to 92 % at 230 VAC
Connection screw terminal block.............. 1.5 - 35 mm2

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3.1.4 Electrical data for rectifier module
Model
designation,
rectifier
module
Output data
Input data
Power
loss*2
UNOM
Setting
range
IRATED
Voltage
range*3
Mains
power*1
Mains
current*1
(VDC)
(VDC)
(A)
(VAC)
(VA)
(Arms)
PCS 24/36
24
22 –33
36
90 - 290
1150
6
150
PCS 24/70
70
90 - 290
2200
12
175
PCS 48/18
48
42 –63
18
90 - 290
1150
6
135
PCS 48/50
50
90 –290
2900
15
210
PCS 110/8
110
100 –158
8
90 –290
1150
6
135
PCS 110/16
16
90 –290
2200
12
160
PCS 110/22
22
90 –290
2900
15
200
PCS 220/10
220
187 –292
10
90 - 290
2700
14
200
*1: max at 195 VAC
*2: type at 230 VAC and full load
*3: Power derating below 190 VAC.
3.2 Environmental data
Class of enclosure...................................................... IP21 as per EN 60529
Cooling........................................................................ Temperature controlled fans in rectifier
modules
Ambient temperature (specified data applies)...... 0 to +40 °C
Storage temperature.................................................. -40 to +70 °C
Humidity .................................................................... <90 % RH, non-condensed
Altitude above sea..................................................... <2000 m
Noise level at 1 m, +20 °C, 25 % load..................... <50 dBA
3.3 Mechanical data
Design ......................................Wall cabinet
Arrangement...........................On a wall indoors in dry, clean room
Weight......................................18 kg, fully equipped
Dimensions..............................400/274/333 mm (h/w/d), see also dimension diagram Appendix_A
Colour ......................................RAL 7035 light grey
Cable inlets..............................From underneath
3.4 Conformity with standards
EN 60529..............................Class of enclosure IP21
EN 50178..............................LVD. Electronic equipment, including power electronics in electrical
power installations.
EN 50272-2...........................Safety requirements for secondary batteries and battery installations
EN 61000-6-2 .......................EMC. Immunity for industrial electronics
EN 61000-6-4 .......................EMC. Emission from industrial electronics

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www.kraftpowercon.com
4FUNCTIONAL DESCRIPTION
4.1 GENERAL
PRX is a complete rectifier with integrated monitoring.
Most functions are handled by the monitoring unit and are described in the Manual for
monitoring unit PCM2. Only the functions that feature at a general rectifier level are described
here.
4.2 FRONT PANEL
The front panel includes the operator panel, mains breaker and voltmeter terminal.
The operator panel is the unit used as the user interface. It is fitted with a display, keypad and
indicator lamp for alarm.
The mains breaker handles the mains feed to the rectifier modules.
The voltmeter terminal has short-circuit protection for safe measurement of the battery voltage
and is designed for standard 4 mm banana plugs.
4.3 RECTIFIER MODULES
The rectifier modules are of the “plug-in” type and can in principle be replaced during
operation. There is room for up to two parallel modules. The rectifier modules are accessible
from the front without the need to loosen the cover
.
There are three indicator lamps on the front of the module:
AC OK - Green: Mains OK
Off: Mains power failure
WARNING- Yellow (permanent): Remote shutdown (standby) or
high temperature warning
Yellow (flashing): Communication fault
Off: Normal operation
ALARM - Off: OK
Red: Alarm (shutdown after DC overvoltage,
over temperature, fan error or internal fault)

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4.4 I/O UNIT
The I/O unit contains an adapter for the external connections required for the monitoring unit.
It is fitted directly on the back plate together with the terminal blocks for AC input and DC
output.
4.5 FUNCTIONS
4.5.1 General
Only the most important functions are specified here. For more information, see the Manual for
monitoring unit PCM2.
4.5.2 Float charging
Float charging is the normal operating mode determined by the battery. The voltage level is to
be set according to the battery manufacturer instructions.
For more information, see the Manual for monitoring unit PCM2.
4.5.3 Equalizing charging
Equalizing charging means charging with raised voltage level over a limited period. It is used
partly for the initial charge, and partly for equalizing cell voltages if spread has occurred.
For more information, see the Manual for monitoring unit PCM2.
WARNING: Generally, batteries of VR-type (vent regulated) should not be subject to equalizing
charging. For some battery types equalizing charging could even be harmful to the batteries. Always
follow the instructions stated by the battery manufacturer.
4.5.4 Battery circuit test
A battery circuit test is automatically carried out at optional intervals (normally once a day).
The test involves checking that the entire battery circuit, i.e. not only the battery block is in
working order.
For more information, see the Manual for monitoring unit PCM2.

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5OPERATION
5.1 GENERAL
The bulk of the operation is associated to the monitoring unit. This is described in the Manual
for monitoring unit PCM2. Other operation is detailed in this section.
5.2 MAINS FEED
The mains breaker handles the mains feed to the rectifier modules.
Note that the breaker only cuts the mains feed to the rectifier modules. The
monitoring unit, however, is fed from the battery and thereby continues to work.
WARNING: Note that the breaker for mains feed does not make the equipment dead.
For a total dead state, the mains feed must also be cut externally and the equipment's
DC output disconnected from the battery.
5.3 OPERATOR PANEL
The operator panel is the link between the equipment and the user. It is made
up of a display, a keypad and a LED. Operation is described in the Manual for
monitoring unit PCM2.
5.4 LIKRIKTARMODULER
There are three indicator LEDs on the front of the rectifier
module with the following functions:
AC OK - Green: Mains OK
Off: Mains power failure
WARNING- Yellow (permanent): Remote shutdown (standby) or
high temperature warning
Yellow (flashing): Communication fault
Off: Normal operation
ALARM - Off: OK
Red: Alarm (shutdown after DC overvoltage,
over temperature, fan error or internal fault)
When the module gives an alarm you have the option of finding out in detail the cause of the
alarm via the operator panel menus, see the Manual for monitoring unit PCM2.

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The modules are of the “plug-in” type and can in principle be replaced during operation. For
more information, see the INSTALLATION INSTRUCTIONS section.
5.5 VOLTMETER TERMINALS
When measuring the battery voltage you should avoid measuring directly at the battery
terminals due to the risk of arcing in the event of a possible short circuit. Use the short-circuit
protected voltmeter terminal on the front panel instead.
The voltmeter terminal fits a standard 4 mm measuring pin. To avoid
measurement errors, the voltmeter used should have high ohms, 10 Mohm
or better.

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6INSTALLATION INSTRUCTIONS
6.1 SAFETY INSTRUCTIONS
WARNING! This product contains dangerous voltage that when touched can cause electric shock, burns
or death. Protective earth must always be connected in a reliable way to avoid the risk of live parts in the
equipment in the event of faults. No live parts are permitted during installation. The product must be
installed by qualified personnel (see 2SAFETY INSTRUCTIONS) section.
WARNING! Check both before and after setting-up that the equipment does not have any mechanical
damage. Check that the equipment and individual rectifier modules have the intended rated voltage.
Cables for input and output power must be correctly dimensioned to avoid fire hazard.
6.2 GENERAL
Installation of the parts that belong to the monitoring unit are not dealt with in this manual. For
complete installation instructions these instructions should therefore be used in combination
with the installation instructions included in the Manual for monitoring unit PCM2.
6.3 STORAGE AND PROTECTION
Storage is to be in a dry area and at a temperature that does not exceed the -40 to +70 °C range.
6.4 MOUNTING
The equipment is designed for wall mounting indoors in a room that is dry, clean and free from
conductive dust. In order to guarantee free air flow for all ventilation openings, at least 25mm
of free space should be left on each side.
The rear plate of the equipment has four mounting holes shaped as keyholes.
In order to fit the key hole, the screw should have a diameter of a max of 6
mm and the screw head diameter 9.5 - 13.5 mm. See also dimension diagram
Appendix_A.
Before mounting, the cover must be removed and the rectifier modules
removed temporarily, partly because the two upper mounting holes are only accessible via the
opening for the rectifier modules but also by considerably lower weight.
Attention! Loosen the earth wire on the underside of the device before removing the cover. Do
not forget to restore the earth wire when the cover put back.
WARNING! The equipment may cause personal injury or damage to property if dropped. Use secure
lifting aids where appropriate. Make sure the mounting screws and their attachments to the wall can
easily and safely handle the weight of the equipment.

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6.5 ELECTRICAL INSTALLATION
6.5.1 General
The equipment is designed for permanent installation. Protective earth
must be connected before any other installation.
For cable inlets there are six “knock-out” holes of which two has a
diameter of 32.5 mm designed for fitting type M32 and five with a
diameter of 20.5 mm designed for fitting type M20.
To enable installation, the cover must be removed by first loosening the
screw on the front and then pulling the cover straight out.
Attention! Loosen the earth wire on the
underside of the device before removing
the cover. Do not forget to restore the
earth wire when the cover put back.
6.5.2 Earthings
For earth and screen connections, use the earth bar available in
the connection area, see adjacent figure.
There is an additional earth terminal specially designed for the
incoming mains cable in direct connection to the mains terminal
block.
For potential equalization in connection with the cable inlet there
is a hole designed for an M8 bolt intended for a ring cable shoe.
6.5.3 Mains voltage
Check that the outer fuse conforms with the recommendations in
the ELECTRICAL DATA section.
Connect single phase mains voltage to the terminal marked L and
N. Connect the earth conductor where possible to the adjacent
earth terminal, although this can also be connected to the earth
bar.
6.5.4 Battery/Load
Check that the rectifier's rating plate shows the rated voltage that
conforms with the battery's nominal voltage.
Connect the DC system to the terminals marked + and -. Select
cables that are dimensioned for handling the rectifier's rated
current.
WARNING! The rectifier's DC output does not have an internal fuse.

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Ensure that there is an external fuse to the battery.
6.5.5 Rectifier modules
The rectifier modules are normally packed separately and are to be
put in place during the installation. The rack module slots should be
equipped with modules starting from the leftmost position and with
spare slots to the right.
A module is installed by gently pushing the module into place and
pushing it into the bottom. Then push the handle towards the
module and finally secure the handle with the two screws.
The modules can in principle be replaced during operation. However, we recommend
disconnection of the mains supply first.
To remove a module, loosen the two screws on the upper handle. It loosens the handle, making
it angled downwards. Use the handle and then pull out the module from its place.
WARNING! Check carefully that the rectifier modules have the correct rated voltage.
6.5.6 I/O unit
All the connections to the monitoring units are grouped in a unit called
the I/O unit. The connectors are pluggable, i.e. they can be removed for
better accessibility when installing. For more information on these
connections, see the Manual for monitoring unit PCM2.
6.5.7 Battery voltage measurement
To make the installation as simple as possible, the device is prepared
for internal measurement of battery voltage. If measurement from an external source is desired,
normally the battery control unit, the connection between K1.X7:3 to X1:4 and K1.X7:5 is
replaced by X1:3 with a connection directly to K1.X7:3 and K1.X7:5. See also circuit diagram
Appendix_B.
6.5.8 Mid voltage measurement (option)
For monitoring the mid voltage of the battery, connection to the I/O unit input X7:4 can be made
via a special overcurrent protected cable.
Mid voltage measurement is an option and is therefore only installed where applicable. Check
that the parameters for the mid voltage measurement are correctly set. See circuit diagram
Appendix_B and Manual for monitoring unit PCM2.
WARNING: The measurement cord must have current limitation via short circuit protection in direct
connection to the connection point on the battery. Use the short-circuit protected cables that are normally
supplied.

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6.5.9 Battery temperature measurement (option)
Measurement of the battery temperature is done via an enclosed Pt-1000 sensor. It is used both
to monitor the temperature level and for temperature control of the float charging voltage. As
the sensor is a Pt-1000 model, bipolar measurement is sufficient, as opposed to the more
common Pt-100 which often needs four-pole measurement to ensure that conductor resistance
does not impact negatively on the measurement results.
Place the sensor where it best represents a mean value for the battery temperature.
Connect the sensor to input X9:1-2 “TEMP SENSOR”.
To fully comply with the EMC requirements, the sensor cable should be provided with the
enclosed ferrite ring, see picture. The ferrite ring is normally attached to the sensor.
If the sensor cable needs extending, there are no special requirements for cables and junction
boxes in addition to normal electrical installation directives. The insulation class is determined
by the battery voltage.
The temperature sensor is an option and is therefore only installed where applicable. Check that
the parameters for temperature measurement are correctly set.
See circuit diagram Appendix_B and Manual for monitoring unit type PCM2.

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7COMMISSIONING
7.1 SAFETY INSTRUCTIONS
WARNING! This product contains dangerous voltage that when touched can cause electric shock, burns
or death. All contact safety devices must be fitted during operation.
7.2 PREPERATORY INSPECTION
Check that the equipment is free from damage, correctly fitted and that all the ventilation
openings are free from obstacles.
Check that all cable installations, electrical connections and protective earths are correctly
implemented.
Check that the earth wire on the underside of the device is in place.
Check that all contact safety devices and breakers are disconnected.
Check that the rated voltage of the equipment corresponds to the rated voltage of the plant.
7.3 ELECTRIFICATION
7.3.1 DC
Start by connecting the battery by connecting a fuse in the battery circuit, for example. Note that
a connection current occurs when the rectifier modules' output capacitors are being charged.
This could give rise to some spark formation at the point of connection.
After a few seconds, the operator panel display lights up, and after a few more seconds the text
appears on the display. All measurement values are initially reset. The measuring begins after
around 10 seconds. Any alarms are activated when a total of around 30 seconds has passed.
WARNING! Connection of the battery with wrong polarity may harm the rectifier. At any uncertainty,
do this:
1. Pull out the rectifier modules.
2. Engage the battery circuit and check the polarity on the rectifier DC output terminals.
3. Disengage the battery circuit and restore the rectifier modules.
4. The continue according to the instructions above
7.3.2 AC
Close the mains breaker on the front of the equipment. The rectifier modules will then start up.
The battery now starts to charge, and if it was in a state of deep discharge, the charging starts
with rated current until the float charging level is reached. Certain types of battery require an

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initial equalizing charge. Always follow the recommendations given by the battery
manufacturer.
7.4 CHECK OF CHARGING VOLTAGE
Check the settings of the monitoring units to ensure the voltage level for float charging and
equalizing charging conform to the battery manufacturer's specifications, see Manual for
monitoring unit PCM2.
When the battery is charged to a level where the “High current” alarm is no longer active, you
should check that the actual output voltage conforms with the set float charging voltage, see
section 0 Check of charging voltage.
7.5 CHECK OF SETTINGS
Each time the monitoring unit has been without voltage, the built-in clock must be set with the
current date and time, see the Manual for monitoring unit PCM2.
Check that the measurement values presented agree with the actual position. Check that the
parameters for charging voltages, alarms and other parameters conform with the intended
function, see the Manual for monitoring unit PCM2.
7.6 CHECK OF OUTPUTS
The alarm outputs A-D and the output for fan control can be operated manually for simple and
smooth control of external circuits, see the Manual for monitoring unit PCM2.

19
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8MAINTENANCE
8.1 ANNUAL INSPECTION
8.1.1 General
In addition to these instructions, you must observe the instructions for maintenance in the
Manual for monitoring unit PCM2 and the battery manufacturer's maintenance instructions.
8.1.2 Check of charging voltage
Connect a measuring instrument to the voltmeter terminal (see section 5.5 VOLTMETER
TERMINAL). Check that the rectifier's output voltage corresponds to the set value.
If the float charging voltage is temperature controlled, it is difficult to determine what the
expected output voltage should be. The solution is to temporarily shut down the temperature
control. You do this using the menu option Functions, battery temperature to specify that the
temperature sensor is not installed (see the Manual for monitoring unit PCM2, section on
Operation, Functions). Do not forget to reset the parameter for the installed temperature sensor
following a completed measurement!
All control is based on measurement. If charge voltage is found to be in a state of non-
conformance it is therefore the voltage measurement that should be calibrated, see the
instructions for maintenance in the Manual for monitoring unit PCM2.
8.1.3 Check of cooling capacity
Check that the ventilation openings for the equipment and the individual rectifier modules are
not clogged with dust or other contamination. Clean where necessary.

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www.kraftpowercon.com
9FAULT TRACING
9.1 SAFETY INSTRUCTIONS
WARNING! This product contains dangerous voltage that when touched can cause electric shock, burns
or death.
Service/maintenance work that involves working with removed contact protection devices may only be
carried out by authorised service personnel (see section 2SAFETY INSTRUCTIONS).
Before work can commence on the equipment, it must be guaranteed that the internal capacitors are
discharged through the following procedure:
1. Disconnect the incoming mains feed.
2. Close the equipment's mains breaker.
3. Wait at least 5 minutes to allow the capacitors to discharge.
WARNING! In the event of overvoltage, the electrolytic capacitors and varistors may explode.
If work must be done when the equipment is powered up and with exposed circuit boards,
splinter protection must therefore be used (protective goggles and screens).
Fault tracing in connection with alarm messages is described in the Manual for monitoring unit
PCM2.
9.2 OTHER FAULT TRACING
The type of faults that can be attributed to the rectifier in general are dealt with here. For faults
that relate to the monitoring unit see the Manual for monitoring unit PCM2.
The primary fuse trips when the rectifier is turned on
Cause 1: Incorrect type of mains fuse. Check that the mains fuse observes the specifications in
section 3 ELECTRICAL DATA.
Cause 2: Internal rectifier module fault. Install one module at a time in order to identify the
module that is responsible for the problem. Replace the defective module.
The rectifier has no output, green indicator lamp “AC OK” is out
Cause 1: Mains voltage missing. Check that there is mains voltage to the mains input
terminals and that the mains breaker is closed.
Cause 2: Rectifier modules are not properly inserted.
The rectifier has no output, green indicator lamp ”AC OK” is lit, yellow indicator lamp
”WARNING” is lit and red indicator lamp ”ALARM” is off
Cause 1: Input ”EXT. FAULT” is used as external blocking and is in open state.
Cause 2: The rectifier module has been switched off due to overtemperature. Check that the
rectifier modules´ ventilation vents are not clogged with dust or other contaminants.
Clean where necessary. Check that the ambient temperature is within permitted
limits.