Eltek Valere PSC305-LV User manual

DC/DC CONVERTER
PSC305-LV
USER MANUAL
UM_PSC305LV_E_R2.0

DC/DC Converter
PSC305-LV
User Manual
Page 2 (16)
ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
Notes to this manual
ATTENTION! Read this manual very carefully before installing and commissioning the specified module.
This manual is a part of the delivered module. Familiarity with the contents of this manual is required for installing
and operating the specified module.
The rules for prevention of accidents for the specific country and the general safety rules in accordance with IEC
364 must be observed.
The function description in this manual corresponds to the date of publishing.
Technical changes and changes in form and content can be made at any time by the manufacturer without notice.
There are no obligations to update the manual continually.
The module is manufactured in accordance with applicable DIN and VDE standards such as VDE 0106 (part 100) and
VDE 0100 (part 410). The CE marking on the module confirms compliance with EU standards 2006-95-EG (low
voltage) and 89/339 EWG (electromagnetic compatibility) if the installation and operation instructions are followed.
Supplier:
ELTEK VALERE INDUSTRIAL GmbH
Schillerstraße 16
D-32052 Herford
+ 49 (0) 5221 1708-210
FAX + 49 (0) 5221 1708-222
Email [email protected]
Internet http://www.eltekvalere-industrial.com
©Copyright ELTEK VALERE INDUSTRIAL 2007. All rights reserved.

DC/DC Converter
PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
The current revision status of this user manual is the following:
Revision: 2.0
Date: 2009-03-24
Revision Description of change Writer Date
00 First edition RTH 2007-11-06
01 Section “Commissioning” reworked, minor text
modifications RTH 2008-02-15
1.0
Minor layout & text modifications, new revision
status numbering (X.X) introduced, index of figures
inserted.
RTH 2009-01-05
2.0 Default values in section 4.6 changed, minor text
modifications. RTH 2009-03-24

DC/DC Converter
PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
Table of Contents
1. Safety Instructions/Waste Disposal Rules ...............................................................................5
2. General Information ........................................................................................................................6
3. Type Range/Equipment.................................................................................................................6
3.1 Main Data.....................................................................................................................................................................6
3.2 Available Options and Assembly Equipment .....................................................................................................7
3.3 Front view/Front side LED panel ...........................................................................................................................8
3.4 Rear Side Connection ...............................................................................................................................................9
3.5 Cooling/Air flow direction.................................................................................................................................... 10
3.6 Communication Interface..................................................................................................................................... 10
4. Handling.......................................................................................................................................... 11
4.1 Storage ...................................................................................................................................................................... 11
4.2 Commissioning........................................................................................................................................................ 11
4.3 Output Power Diagram.......................................................................................................................................... 12
4.4 LED Indications........................................................................................................................................................ 13
4.5 Monitoring................................................................................................................................................................. 13
4.6 Default Values......................................................................................................................................................... 13
5. Maintenance.................................................................................................................................. 14
6. Trouble Shooting .......................................................................................................................... 14
7. Technical Specifications............................................................................................................ 15
7.1 Dimensional drawings: .......................................................................................................................................... 16
Index of Figures
Figure 1.) DC/DC power rack fully equipped..................................................................................................................7
Figure 2.) Fan rack ................................................................................................................................................................7
Figure 3.) Front view.............................................................................................................................................................8
Figure 4.) Rear side connector...........................................................................................................................................9
Figure 5.) Module airflow.................................................................................................................................................. 10
Figure 6.) Output power diagram................................................................................................................................... 12
Figure 7.) Module dimensions ......................................................................................................................................... 16

DC/DC Converter
PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
1. Safety Instructions/Waste Disposal Rules
Warning!
Because several components of operating electrical modules are charged by dangerous voltage, the improper
handling of electrical modules may be the cause of accidents involving electrocution, injury, or material damages.
•Operation and maintenance of electrical modules must be performed by qualified skilled personnel such as
electricians in accordance with EN 50110-1 or IEC 60950.
•Install the module only in areas with limited access to unskilled personnel.
•Before starting work, the electrical module must be disconnected from mains. Make sure that the module is
earthed.
•Do not touch connector pins as they can hold dangerous voltage up to 30 seconds after disconnection.
•Only spare parts approved by the manufacturer must be used.
All electric modules must be disposed of separate from domestic waste at collecting points that have been set up
by the government or municipal authority.
“Separate collection is the precondition to ensure specific treatment and recycling of WEEE and is necessary to
achieve the chosen level of protection of human health and the environment in the Community.”
The above statement from EU directive 2002/96/EC applies to all electric modules installed within EU countries.
In countries outside the EU, different rules may apply regarding waste disposal of electric modules.
For more information about waste disposal of your discarded equipment, contact your
ELTEK VALERE INDUSTRIAL partner.

DC/DC Converter
PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
2. General Information
The PSC305 is a module with rear side connectors and is designed to be mounted in an assembly set 19’’ sub rack
according to section 3.2. Due to its state-of-the-art circuit design, the unit has very low losses and therefore very
compact dimensions, low weight and a very high power density.
The PSC305 can be used as electrically isolated DC power supply.
The nominal output power per unit is 480 W. Several units can be switched in parallel to increase the system
output power or to build redundant power supply systems (n + 1-principle)
3. Type Range/Equipment
Type Designation Article Code Nominal Output Voltage Nominal Output Current
PSC305-LV/24-20 201-005-447.00 24VDC 20ADC
PSC305-LV/48-10 201-005-457.00 48VDC 10ADC
PSC305-LV/60-8 201-005-467.00 60VDC 8.0ADC
3.1 Main Data
DC input voltage range: 18 to 75VDC
DC input current: 22.5ADC @24VDC/11.3ADC @48VDC/9.0ADC @60VDC
Nominal Output Power: 480W
For more specific data, see section 7.

DC/DC Converter
PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
3.2 Available Options and Assembly Equipment
Designation Material Code
DC/DC power rack DDR PSC305-LV (assembly set 19’’
sub rack 4U incl. backplane) for
six DC/DC converters PSC305 (single input/output
connection for each module)
202-305-607.00
Cover plate (with handle) to cover not used PSC slots,
3U; RAL 7035 881-MEC-BPL.03.14.B
Fan rack (recommended) 102-308-FR1.LV02
Figure 1.) DC/DC power rack fully equipped
with
six DC/DC converters PSC305
Figure 2.) Fan rack
(recommended)

DC/DC Converter
PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
3.3 Front view/Front side LED panel
The PSC305-LV is equipped with the following three LED
indicators:
•INPUT OK
•OUTPUT OK
•ALARM
For more information about the LED indicators, see section 4.4.
Two captive screws are used for each module to secure it to the
subrack (components of the module)
Figure 3.) Front view

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PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
3.4 Rear Side Connection
Socket outlet (DC-Input, DC-Output & Signals):
Pin assignment of the rear side connector:
Pin Function
2b (+) Output
5b (-) Output
8b PE
11b -
13a CAN-CVpp
13c (-) output voltage sense link
14a CAN-H
14c CAN-L
15a -
15c CAN-CVCC
16a AGND
16c -
17a -
17c Hardwarecoding CODE1
18a General alarm NC
18c General alarm COM
19a General alarm NO
19c –
20a –
20c (+) output voltage sense link
22b PE
25b -
28b (+) DC input
31b (-) DC input
Figure 4.) Rear side connector (shown
from the rear side of the module).

DC/DC Converter
PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
3.5 Cooling/Air flow direction
The PSC305 is convection cooled. The cooling air flows through the device in vertical direction. To provide
sufficient air flow, a minimum space (A) of 2U (approx. 90 mm) is required between the unit and the top cover of
the cabinet as well as an unobstructed supply of air from below.
)In Systems with high packing rate and limited airflow we recommend to use the fan rack for cooling.
Figure 5.) Module airflow
3.6 Communication Interface
The DC/DC converter PSC305 is equipped with a serial data interface in accordance with the Controller Area
Network (CAN) specification.
The CAN-Bus connection is integrated in the rear side connector.
Several modules in a system or parallel connection can be controlled and monitored through the CAN-Bus by a
central DC controller unit UPC3S.
Following parameters of a specific DC/DC converter unit can be controlled or monitored:
•Output voltage
•Output current
•Module temperature
•Module status

DC/DC Converter
PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
4. Handling
4.1 Storage
The modules must be stored in a dry, dust free room with a storage temperature in accordance with the specific
technical data (see section 7).
4.2 Commissioning
Note: Before commissioning the module make sure that the input voltage corresponds to the input voltage range
of the unit as specified on the type plate and that the output voltage of paralleled units matches.
1. Carefully unpack the unit
2. Fill the rack beginning with the left slot.
3. Put the unit into an empty slot.
4. Carefully slide in the unit until the module connector touched the backplane connector.
5. Increase the force until the unit fits in completely. Avoid using too much force. If the unit does not fit in,
begin again at Step 3.
6. Secure the unit using the two captive screws (M3x12) provided with the module.
Note: The PSC305 serially is equipped with an internal output side decoupling diode. This ensures
hot plug-in capability of the unit and enables the operator to add modules under operating conditions.
Note: But if the module is to be removed it previously must be switched off by the input fuse!
Caution: After switching off the module the internal capacitors are still fully charged. Do not touch connector
pins as they can still be charged with dangerous voltage after disconnection.

DC/DC Converter
PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
4.3 Output Power Diagram
The output characteristic of the PSC305 is a power limited IV characteristic curve in accordance with
DIN 41772/DIN 41773.
For modules in parallel operation mode, a load balance of approximately ±10% is attained due to a sloping output
voltage line (-1% at 100% Inom).
The module is sustained short-circuit proof due to constant current control.
Output power (example PSC305-LV/48-10)
Figure 6.) Output power diagram

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PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
4.4 LED Indications
Functions of front panel LED indicators
LED Colour Function
green Input voltage ok
(criterion: Vi= 20VDC to 75VDC)
green Vout ok (criterion: Vout ≥85% of adjusted value)*
red General fault**: Vin incorrect, Vout incorrect,
module overtemperature, short circuit
*For the output voltage threshold values (factory-set), see section 4.6
**The module is equipped with an isolated signalling contact (normally open contact).
The maximum load is 60VDC/500 mA. The contact is time-delayed and reacts after approximately 10 seconds.
4.5 Monitoring
Monitored values Criteria Function
DC input voltage Input voltage less than 20V; higher 75V The module automatically switches off.
The module automatically switches off (self
locking). The module must be manually
restarted.
DC output voltage Output voltage higher than the adjusted
operating threshold*
The module automatically switches off. It
automatically switches on when the heat
sink cools down to ≤70°C.
Module temperature Heat sink temperature ≥80°C
*For the output voltage threshold values (factory-set), see section 4.6
4.6 Default Values
The following factory-set default values are stored in PSC305 modules:
Default values 24V version 48V version 60V version
Vo (VDC) 24.0 48.0 60.0
V> (VDC) 25.2 50.4 63.0
Iconst (ADC) 20.0 10.0 8.0
V< (VDC) 22.8 45.6 57.0

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PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
5. Maintenance
In general, the module is maintenance free.
A yearly inspection with following checks is recommended checking the following:
•Mechanical inspection
•Removal of dust and dirt, especially on radiator surfaces
•Check for internal dust or humidity
Attention! Dust combined with moisture or water may influence or destroy the internal electronic circuits. Dust
inside the unit can be blown out with dry compressed air.
The interval between the checks depends on ambient conditions of the installed module.
6. Trouble Shooting
Symptom Possible reason Corrective action
No output voltage •Is the input voltage present?
•PSC305 module plugged in securely?
•Incorrect polarity of input voltage?
•Short circuit at the output?
→Check
→Check
→Check
→Check
Deviation of the
output voltage
•Is the unit operating in current limiting
mode due to overload?
•If an external sensor lead is used for the
output voltage, is the connection
faultless?
→Reduce the load
→Check
If the unit still does not work even though all checks have been done, contact your sales agent or the ELTEK
VALERE INDUSTRIAL service department.

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PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
7. Technical Specifications
Type designation PSC305-LV/24-20 PSC305-LV/48-10 PSC305-LV/60-8
Article code 201-005-447.00 201-005-457.00 201-005-467.00
DC input:
DC input voltage range 18-75VDC
Input current 22.5ADC @ 24VDC/11.3ADC @ 48VDC/9.0ADC @ 60VDC
Efficiency ≥89%
Internal input fusing 40A
DC output:
Nominal output
voltage
24VDC 48VDC 60VDC
Nominal output current 20.0ADC 10.0ADC 8.0ADC
Nominal output power 480W
Voltage ripple ≤20mVpp
≤20mVpp ≤20mVpp
Psophometric acc. to
CCITT-A
≤1.8mV ≤1.8mV ≤1.8mV
Dynamic accuracy of
the charge voltage
≤3% Vnom at load changes between 10%-90%-10% Inom; transient time
≤1.5ms
Short circuit
protection
sustained short-circuit proof; 1 x Inom
Parallel operation yes (max. 24 units with DC controller unit UPC3S); current balance ±10% Inom
Internal decoupling at
the output
yes; active low loss decoupling circuit in the negative output line
Internal output fuse 40A 25A 20A
Standard Features:
LED signalling Operation (green), Vo OK (green), Alarm (red)
Isolated signalling
contact
“General fault”; maximum load: 60 VDC/500 mA
Communications
interface
CAN- Bus, proprietary protocol
Environmental:
Ambient temperature Operation: -20°C to +55°C; storage: -40°C to +85°C; output power derating
down to 100W depending on ambient temperature and cooling
Climatic conditions according to IEC 721-3-3 class 3K3/3Z1/3B1/3C2/3S2/3M2
Max. installation
altitude
≤1500m
Noise emission ≤30dBA

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PSC305-LV
User Manual
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ELTEK VALERE INDUSTRIAL ©2007 UM_PSC305LV_E_R2.0
Mechanical:
Type of construction 1/6 x 19’’, 3U
Cooling Convection cooling, bottom to top airflow (forced cooling recommended)
Connections DC input, DC output and signalization: DIN41612-M-connector
Dimensions (W/H/D) 71/128/285mm
Weight approx. 2.2 kg approx. 2.2 kg approx. 2.2 kg
Type of enclosure /
Protection class
IP20 (front panel)/1
Colour (front panel) RAL 7035, black print
Compliances:
CE conformity yes
Compliance to safety
standards
EN60950-1; VDE0100 T410; VDE0110; EN50178; EN60146
Compliance to EMC
standards
EN55011/22 class “B“; EN61000-4 T2-5
7.1 Dimensional drawings:
Figure 7.) Module dimensions