KraftPowercon PRM1 Series User manual

KraftPowercon Sweden AB, Hjalmar Petris väg 49, S-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 voltages 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 authorized service personnel. The equipment housing may only
be removed by authorised personnel when all power has been cut to the equipment 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 for reverse voltage. Power is supplied from several sources.
Manual for
charging rectifier
type PRM1
SAFETY INSTRUCTIONS
Manual: 9-1627-B
P/n: 0001079

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www.kraftpowercon.com
We reserve the right to make changes to the content of this manual without prior notification.

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www.kraftpowercon.com
CONTENTS
1PRESENTATION...................................................................................... 5
2SAFETY INSTRUCTIONS......................................................................... 6
3TECHNICAL DATA ................................................................................. 7
3.1 ELECTRICAL DATA ...................................................................................................................... 7
3.1.1 Assortment............................................................................................................................... 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
3.3.1 PRM1....................................................................................................................................... 8
3.3.2 PRM1-W.................................................................................................................................. 9
3.4 CONFORMITY WITH STANDARDS ............................................................................................ 9
4FUNCTIONAL DESCRIPTION............................................................... 10
4.1 GENERAL................................................................................................................................... 10
4.2 APPLICATION EXAMPLE ........................................................................................................... 10
4.3 RECTIFIER MODULES................................................................................................................ 11
4.4 RACK FOR RECTIFIER MODULES AND OPERATOR PANEL..................................................... 11
4.5 TEST CONTACTS....................................................................................................................... 11
4.6 I/O UNIT.................................................................................................................................... 11
4.7 FUNCTIONS.............................................................................................................................. 11
4.7.1 General.................................................................................................................................. 11
4.7.2 Float charging........................................................................................................................ 11
4.7.3 Equalization charging ............................................................................................................ 11
4.7.4 Battery circuit test .................................................................................................................. 12
5OPERATION ......................................................................................... 13
5.1 GENERAL................................................................................................................................... 13
5.2 OPERATOR PANEL.................................................................................................................... 13
5.3 RECTIFIER MODULES................................................................................................................ 13
5.4 MAINS SUPPLY ......................................................................................................................... 13
5.4.1 PRM1..................................................................................................................................... 13
5.4.2 PRM1-W / PC10 .................................................................................................................... 14
5.5 TEST CONTACTS....................................................................................................................... 14
6INSTALLATION INSTRUCTIONS.......................................................... 15
6.1 SAFETY INSTRUCTIONS............................................................................................................ 15
6.2 GENERAL................................................................................................................................... 15
6.3 STORAGE AND PROTECTION .................................................................................................. 15
6.4 MOUNTING.............................................................................................................................. 15
6.4.1 General.................................................................................................................................. 15
6.4.2 PRM1..................................................................................................................................... 15
6.4.2.1 Rack.............................................................................................................................. 15
6.4.2.2 I/O Unit ........................................................................................................................15
6.4.3 PRM1-W................................................................................................................................ 15
6.4.4 PC10...................................................................................................................................... 16
6.5 ELECTRICAL INSTALLATION..................................................................................................... 16
6.5.1 General.................................................................................................................................. 16
6.5.2 Earthing ................................................................................................................................. 16
6.5.2.1 PRM1............................................................................................................................16
6.5.2.2 PRM1-W ....................................................................................................................... 16
6.5.2.3 PC10............................................................................................................................. 16
6.5.3 Mains voltage ........................................................................................................................ 16
6.5.3.1 External fuse rating........................................................................................................ 16

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6.5.3.2 Connection PRM1......................................................................................................... 16
6.5.3.3 Connection PRM1-W /PC10 ......................................................................................... 17
6.5.4 Battery/Load........................................................................................................................... 17
6.5.4.1 General.........................................................................................................................17
6.5.4.2 PRM1............................................................................................................................17
6.5.4.3 PRM1-W ....................................................................................................................... 17
6.5.4.4 PC10............................................................................................................................. 17
6.5.5 Rectifier modules................................................................................................................... 17
6.5.6 I/O Unit ................................................................................................................................. 18
6.5.6.1 General.........................................................................................................................18
6.5.6.2 Communication cable................................................................................................... 18
6.5.6.3 Power supply PRM1...................................................................................................... 18
6.5.6.4 Power supply PRM1-W ................................................................................................. 18
6.5.6.5 Power supply PC10....................................................................................................... 18
6.5.7 Operator panel ...................................................................................................................... 18
6.5.8 Test contacts.......................................................................................................................... 19
6.5.8.1 PRM1............................................................................................................................19
6.5.8.2 PRM1-W / PC10............................................................................................................ 19
7STARTING UP ...................................................................................... 20
7.1 SAFETY INSTRUCTIONS............................................................................................................ 20
7.2 PREPARATORY INSPECTION .................................................................................................... 20
7.2.1 General.................................................................................................................................. 20
7.3 POWERING UP ......................................................................................................................... 20
7.3.1 DC......................................................................................................................................... 20
7.3.2 AC ......................................................................................................................................... 20
7.4 CHECKING THE CHARGING VOLTAGE................................................................................... 20
7.5 CHECKING THE SETTINGS ....................................................................................................... 21
7.6 CHECKING THE OUTPUTS ....................................................................................................... 21
8MAINTENANCE.................................................................................... 22
8.1 ANNUAL INSPECTION.............................................................................................................. 22
8.1.1 General.................................................................................................................................. 22
8.1.2 Checking the charging voltage............................................................................................... 22
8.1.3 Checking the cooling capacity............................................................................................... 22
9FAULT TRACING.................................................................................. 23
9.1 SAFETY INSTRUCTIONS............................................................................................................ 23
9.2 FAULT TRACING ALARMS........................................................................................................ 23
9.3 OTHER FAULT TRACING .......................................................................................................... 23
Appendices
A LAYOUT AND DIMENSION DIAGRAM, PRM1
B CIRCUIT DIAGRAM, PRM1
C LAYOUT AND DIMENSION DIAGRAM, PRM1-W
D CIRCUIT DIAGRAM, PRM1-W

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KraftPowercon Sweden AB, Hjalmar Petris väg 49, S-352 46 Växjö, Sweden, Tel: [phone], Fax: [phone],
www.kraftpowercon.com
1PRESENTATION
PRM1 is a complete charge rectifier with built-in monitoring, intended for mounting in a 19”
rack.
PRM1-W is a variant where PRM1, together with a 19” wall cabinet comprises a complete unit.
PC10 is a complete DC system where PRM1 is a part of the system.
The system is built on a modular basis for easy service and high flexibility. 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. The rectifiers are of “plug-
in” type and can be connected in parallel to increase capacity and availability.
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 D.C.
system.
For a complete description, this manual is to be used together with the description for the
monitoring unit, Manual for monitoring unit type PCM2.

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www.kraftpowercon.com
2SAFETY INSTRUCTIONS
This product contains dangerous voltages that when touched can cause electric shock, burns or
death.
For safety reasons the concerned personnel are classified according to the following requirements
for specific skills.
Authorised service 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 that the content of this description cannot be
misunderstood.
• Have undergone a product-specific training programme for authorised service personnel
that is 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 that the content of 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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3TECHNICAL DATA
3.1 ELECTRICAL DATA
3.1.1 Assortment
PRM1 can be equipped with up to four rectifier modules, depending on the model. The table
below also applies to model variant PRM1-W.
PRM1 Rectifier module
UNOM I
RATED Number IRATEDModel
designation (VDC) (A) min max (A)
Model
designation
PRM1 24/80 80 1 4 20 L0500B-IW
PRM1 24/240 24 240 1 4 60 V1500B
PRM1 48/48 48 1 4 12 L0600A-IW
PRM1 48/100 100 1 4 25 L1250A-IW
PRM1 48/200
48
200 1 4 50 L2500A-IW
PRM1 110/40 110 40 1 4 10 L1250K
3.1.2 Common electrical input data
Rated voltage ............................................110*1/115*1/120*1/220/230/240 V AC 1- phase*2
Frequency .................................................47 – 63 Hz
Power factor..............................................> 0.95 at 230 VAC, full load
Connection PRM1.....................................1.5 mm2cable, 2 m included
Connection PRM1-W / PC10 ....................Screw terminal block, 0.2 – 6 mm2
*1: *1: Only applies to certain models, see Electrical data for rectifier module.
*2: A single rectifier module is supplied from one phase, but several modules can each be supplied
from separate phases.
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 ...........................................<1% of rated current
Efficiency, typical......................................>90% at 230 VAC
Connection PRM1.....................................For rated voltage 24 V: 16 mm2cable, 2 m included
For rated voltage 48 V: 10 mm2cable, 2 m included
For rated voltage 110 V: 2.5 mm2cable, 2 m included
Connection PRM1-W................................Double screw terminal blocks, 0.75 – 35 mm2each
Connection PC10......................................Internal connection

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3.1.4 Electrical data for rectifier module
Output data Input data
UNOM Setting range IRATED Voltage range
Mains
power*
1
Mains
current
*1
Model
designation,
rectifier
module (VDC) (VDC)(A) (VAC) (VA) (Arms)
Power
loss*2
L0500B-IW 20 85 - 295 670 3.4 92
V1500B 24 21 – 28 60 180 - 264 1960 10.0 187
L0600A-IW 12 85 - 295 800 4.1 92
L1250A-IW 25 85 - 295 1600 8.2 156
L2500A-IW
48 42 - 56
50 150 - 295 3150 16.1 312
L1250K 110/125 97.5 - 145 10 90 - 300 1410 7.2 139
*1: max at 195 VAC
*2: typical at 230 VAC and full load
3.2 ENVIRONMENTAL DATA
Class of enclosure PRM1........................................IP20 as per EN 60529
Class of enclosure PRM1-W...................................IP20 as per EN 60529 (IP21 on request)
Cooling ..................................................................Temperature controlled fans in rectifier
modules
Ambient temperature (spec. data applies)...............0 to +40 °C
Storage temperature ...............................................-40 to +70 °C
Humidity................................................................<90 % RH, non-condensed
Altitude a.s.l...........................................................<2000 m
Noise level, at 25 % load, built into cabinet ..........<50 dBA, 1 rectifier module
<54 dBA, 2 rectifier modules
<56 dBA, 3 rectifier modules
<57 dBA, 4 rectifier modules
3.3 MECHANICAL DATA
3.3.1 PRM1
Version.................................. Rack for 19” frame
Placement ............................. Indoors in dry, clean room
Mounting, rack...................... Mounted in 19” rack
Mounting, I/O module .......... Mounted on 35 mm guide
rails or directly on
mounting plate
Weight .................................. 18 kg, fully equipped with 4 rectifier modules
Dimensions, rack .................. 3 HU, 133/483/312 mm (h/w/d), see also dimension diagram
Appendix_A
Dimensions, I/O module....... 117/224/66 mm (h/w/d), see also dimension diagram Appendix_A
Colour, rack .......................... RAL 7035 light grey

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3.3.2 PRM1-W
Version.................................. Wall mounted cabinet
Placement ............................. Indoors in dry, clean room
Weight .................................. 50 kg, fully equipped with 4 rectifier
modules
Dimensions........................... 604/600/500 mm (h/w/d), see also
dimension diagram Appendix_C
Colour................................... RAL 7035 light grey
Cable inlet ............................ From below and above
3.4 CONFORMITY WITH STANDARDS
EN 60529...........................Encapsulation class IP20
EN 50178........................... LVD. Electronic equipment, including power electronics in electrical
power installations.
EN 61000-6-2 ....................EMC. Immunity for industrial electronics
EN 61000-6-4 .................... EMC. Emission from equipment in an industrial environment

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4FUNCTIONAL DESCRIPTION
4.1 GENERAL
PRM1 is a complete rectifier unit
with built-in monitoring, intended
for mounting in a 19” rack.
PRM1 can also be
supplied built into a wall
mounted cabinet and is
then designated PRM1-W.
Another alternative is PRM1 mounted as a part of a complete
DC system of type PC10.
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 APPLICATION EXAMPLE
PRM1/PRM1-W is intended for integration in a complete DC system. An example of such is shown
in the simplified schematic below.
Figure 1 Application example PRM1
1-4: Rectifier modules (T1-4), PRM1 9: I/O unit (K1), PRM1
5: Battery 10: Operator panel (P1), PRM1
6: Battery block 11: Alarm outputs
7-8: Distribution unit 12: Capacity test terminals

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4.3 RECTIFIER MODULES
The rectifier modules are of the ”plug-in” type and can be replaced during operation. Depending
on the model, up to two or four parallel modules can be fitted.
There are three indicator lamps on the front of the module:
AC OK - Green -> Mains OK
Off -> Mains power failure
DC OK - Green -> DC OK
Off -> Low DC voltage
ALM - Red -> Alarm
Off -> OK
4.4 RACK FOR RECTIFIER MODULES AND OPERATOR PANEL
The rack unit contains the operator panel and the rectifier modules.
The operator panel P1 is the unit used as the user interface. It is mounted modularly to the left of
the rectifier modules.
The rectifier modules (T1 – T4) are ”plug-in” modules. Of the four locations, two or four of them
can be equipped, depending on the PRM1 model, see section TECHNICAL DATA.
4.5 TEST CONTACTS
There are short-circuit proof test contacts (X30) alongside the operator panel, for checking the
battery voltage. The test contacts accept 4 mm banana plugs.
4.6 I/O UNIT
The I/O unit contains connection terminals for the external connections required for the
monitoring unit.
4.7 FUNCTIONS
4.7.1 General
Only the most important functions are specified here. For more information, see the Manual for
monitoring unit PCM2.
4.7.2 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’s instructions.
For more information, see the Manual for monitoring unit PCM2.
4.7.3 Equalization charging
Equalization charging means charging at an increased voltage level over a limited period. It is used
partly for the initial charge, and partly for equalizing cell voltages if spreading 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 equalization
charging. For some battery types equalization charging could even be harmful to the batteries.
Always follow the battery manufacturer’s instructions.

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4.7.4 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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www.kraftpowercon.com
5OPERATION
5.1 GENERAL
Most of the operation is associated with the monitoring unit. This is described in the Manual for
monitoring unit PCM2. Other operation is detailed in this section.
5.2 OPERATOR PANEL
The operator panel is the link between the equipment and the user. It is made up
of a display, a keypad and an LED. Operation is described in the Manual for
monitoring unit PCM2.
5.3 RECTIFIER MODULES
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
DC OK - Green -> DC OK
Off -> Low DC voltage
ALM - Red -> Alarm
Off -> OK
When the module gives an alarm you have the option of finding the cause of the alarm out in
detail via the operator panel menus, see the Manual for monitoring unit PCM2.
The modules are of the ”plug-in” type and can in principle be replaced during operation. For more
information, see the INSTALLATION INSTRUCTIONS section.
5.4 MAINS SUPPLY
5.4.1 PRM1
PRM1 is supplied with a cable stump (phase, neutral, earth) per rectifier module. The rectifier
modules can therefore be supplied either from one common phase or from separate phases.

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5.4.2 PRM1-W / PC10
The rectifier module mains breaker Q1 is behind the front plates
(behind door in PC10). Only the phase connection is switched,
not the neutral connection.
Note that the breaker only switches 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 remove all voltages. To remove all
voltages, the battery must also be disconnected.
5.5 TEST CONTACTS
When measuring the battery voltage you should avoid measuring directly
on the battery poles, due to the risk of arcing in the event of a possible short
circuit. Instead, use the short-circuit protected test contacts just below the
operator panel.
The test contacts accept 4 mm insulated safety plugs, and also 4 mm
banana plugs. To avoid measurement errors, the voltmeter used should
have high internal resistance, 10 Mohm or better.

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6INSTALLATION INSTRUCTIONS
6.1 SAFETY INSTRUCTIONS
WARNING! This product contains dangerous voltages 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 SAFETY INSTRUCTIONS section 2. )
WARNING! Check both before and after setting-up that the equipment does not have any
mechanical damage. Check that the equipment is designed for the existing rated voltage. Cables
for input and output power must be correctly dimensioned to avoid fire hazard.
6.2 GENERAL
Installation of parts belonging to the monitoring unit is 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 within the -40 to +70 °C range.
6.4 MOUNTING
6.4.1 General
The equipment is intended for placement in a dry, clean environment that is free from conductive
dust. For EMC reasons, both rack and I/O unit must be placed within the same metal enclosure.
6.4.2 PRM1
6.4.2.1 Rack
Mount the rack unit in a 19” rack frame. Make sure there is sufficient space for ventilation, see
Appendix A, DIMENSION DIAGRAM.
6.4.2.2 I/O Unit
The I/O unit is supplied with adapters for 35 mm guide rails. The unit can also be mounted
directly on a flat surface by removing the adapters first. Make sure that the distance between the
rack and I/O unit is sufficiently close for the supplied 2 m cable to reach.
6.4.3 PRM1-W
The cabinet is intended for wall mounting.
Special wall mountings are supplied to
simplify assembly. Undo the screw on the
left front edge (see arrow) and open the
cabinet. Fix the wall mountings on the back
of the cabinet with two screws each. Close the cabinet again and fix
with the screw. The cabinet can now be hooked onto suitable attachment screws in the wall.

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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.
6.4.4 PC10
For DC system PC10, the PRM1 unit is already installed.
6.5 ELECTRICAL INSTALLATION
6.5.1 General
The equipment is designed for permanent installation. Protective earth must be connected before
any other installation.
6.5.2 Earthing
6.5.2.1 PRM1
Earth the rack using the 6 mm2earthing wire connected to the back plane in the rack.
Earth the I/O unit via the 1.5 mm2earthing wire connected to the unit’s cover.
6.5.2.2 PRM1-W
The earthing and shielding are to be connected to the earth rail
shown on the adjacent figure.
There are 5 mm threaded studs welded on the top inside of the
hinged part, for potential equalization.
6.5.2.3 PC10
For earth and shield connections, the earth bar located close to the terminal bar should be used.
6.5.3 Mains voltage
6.5.3.1 External fuse rating
The size of the external primary fuse is selected as follows:
1. Find the maximum mains current for the type of rectifier module in question from the
table in section Electrical data for rectifier module.
2. Multiply it by the number of rectifier modules.
3. Choose the next highest fuse rating.
NOTE: If you choose to feed the rectifier modules from different phases (see below), point 2 above
must naturally be suitably modified.
6.5.3.2 Connection PRM1
Each rectifier module has its own wiring for phase and neutral. It is therefore possible to select
between feeding the modules from individual phases or to connect two or more modules in
parallel to the same phase. The wires are marked Ln for phase and Nn for neutral, where n is the
rectifier module number (1-4).

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6.5.3.3 Connection PRM1-W /PC10
Each rectifier module has its own terminal blocks
for phase and neutral. It is therefore possible to
select between feeding the modules from
individual phases or to link two or more to the
same phase. To simplify this, the terminal blocks
are fitted with connection links. The links can be
cut to suit the required number of poles. At
delivery, all mains inputs are connected in parallel.
NOTE: When cutting the connection links, ensure
the “tag” is removed completely, so that the
insulation distance is not reduced.
6.5.4 Battery/Load
6.5.4.1 General
Check that the rectifier's rating plate shows a rated voltage that conforms with the battery's
nominal voltage.
WARNING! The rectifier module's DC output does not have an internal fuse. Ensure that there is
an external fuse to the battery. Not valid for PC10 though, since it has an internal fuse.
Check the polarity carefully before connection, incorrect polarity can damage the rectifier.
6.5.4.2 PRM1
Each rectifier module has its own wires for DC output. They are marked +n and –n respectively,
where n is the number of the rectifier module (1-4). The DC output of the rectifier modules shall
be connected in parallel, i.e. all modules are to be connected to a common fuse group at the
battery block. Select cables that are dimensioned for handling the rectifier's rated current.
6.5.4.3 PRM1-W
The DC output is connected to the existing DC system (normally to a fuse group
in the battery block) via terminal X31. Each pole has double terminal blocks,
which are connected in parallel.
Connect the positive pole to one or both terminal blocks X31:1-2 marked ”DC
out +”.
Connect the negative pole to one or both terminal blocks X31:3-4 marked ”DC
out -”.
6.5.4.4 PC10
The DC output is already internally connected to a fuse group in the battery distribution.
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.
The modules can in principle be replaced during operation. However, we
recommend disconnection of the mains supply first.
Press bottom left (see figure above) to release the module. This releases a
handle that can be pulled out to enable the module to be extracted from its position.

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The module is installed in reverse order by carefully pushing it into place.
Move the last part by pressing in the handle until it snaps in place.
WARNING! Check carefully that the rectifier modules have the correct
rated voltage. Equipment with a rated voltage lower than 110V has a
mechanical block that prevents a 110V module from being incorrectly fitted to equipment with a
lower rated voltage. The block may not be removed.
6.5.6 I/O Unit
6.5.6.1 General
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. Only the connections that are made between
the rack unit and I/O unit via the supplied PRM1 wiring are described here,
as well as the power supply to the PRM1-W I/O unit (already done in PC10).
For other connections to the I/O unit, see Manual for monitoring unit PCM2.
6.5.6.2 Communication cable
The supplied RJ45 cable (standard network cable) is already connected to the operator panel in
the rack at one end, the other end shall be connected to the I/O unit connector X4. Note that there
are two physically identical connectors beside each other; X3 and X4. X4 is closest to the short
side of the unit.
This only applies to PRM1. On PRM1-W and PC10, the cable is already connected at delivery.
6.5.6.3 Power supply PRM1
The negative pole cable for the monitoring unit power supply is included and one end is already
connected to the back plane card in the rack. Connect the other end marked ”Aux-” to the I/O unit
screw plinth X5:1.
The monitoring unit positive power supply (screw plinth X5:2) is most suitably connected to a fuse
group in the battery distribution board.
6.5.6.4 Power supply PRM1-W
The negative pole cable to the monitoring unit’s power supply is already connected.
The monitoring unit positive power supply (screw plinth X5:2) is most suitably connected to a fuse
group in the battery distribution board.
6.5.6.5 Power supply PC10
For PC10, this is already taken care of.
6.5.7 Operator panel
The operator panel is already installed at delivery. The following
description is mainly intended for service in the future.
To release the operator panel, press the upper part of the panel causing
a magnetic lock to disengage (see upper figure).
Pull the upper edge so that the magnet releases and then pull the lower
edge free from the spring catch (lower figure). There are two wires on
the rear of the panel, if these are released, the panel can be removed
completely.
To refit the panel, first connect the two wires. Then check that both the

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magnetic lock and the spring lock are extended. Press the lower edge onto the spring lock and
then the upper edge onto the magnetic lock until it clicks into place.
6.5.8 Test contacts
6.5.8.1 PRM1
The I/O unit’s connection terminal X7 has a contact for a short-circuit proof test contact, used to
measure the battery voltage. Use the supplied cable to connect X7:1 and X7:6, marked V- and V+
respectively, to the test contacts located just below the operator panel.
6.5.8.2 PRM1-W / PC10
The short-circuit proof test contact is already connected and ready for use on the front of the
equipment.

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www.kraftpowercon.com
7STARTING UP
7.1 SAFETY INSTRUCTIONS
WARNING! This product contains dangerous voltages that when touched can cause electric shock,
burns or death. All contact safety devices and plates must be fitted when operating.
7.2 PREPARATORY INSPECTION
7.2.1 General
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 all contact safety devices are in place.
Check that the rated voltage of the equipment corresponds to the rated voltage of the plant.
7.3 POWERING UP
7.3.1 DC
Start by connecting the rectifier to the battery, by connecting a fuse in the battery circuit, for
example. Note that a connection current occurs when the rectifier modules' output capacitors start
charging. This could give rise to some sparks at the point of connection.
After a few seconds, the operator panel display lights up, and after a few more seconds text
appears on the display. All measurement values are initially reset. The measurement starts after
around 10 seconds. Any alarms are activated first after around 30 seconds have passed.
7.3.2 AC
Turn the mains power on. On PRM1-W and PC10 this is done with
breaker Q1 inside the cabinet. 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 initial equalizing charge.
Always follow the recommendations given by the battery manufacturer.
7.4 CHECKING THE 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 8.1.2 Checking the charging voltage.