CD5.121 - PULS Power Supply

CD5.121 - PULS Power Supply
CD5.121
DC/DC Converter 12V, 8A
CD-Series
DC/DC CONVERTER
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
24V DC-Input
Isolated 12Vdc Output
Efficiency up to 88.2%
Width only 32mm
20% Output Power Reserves
Full Power Between -25°C and +60°C
Soft-start Function Included
Minimal Inrush Current Surge
Reverse Input Polarity Protection
3 Year Warranty
GENERAL DESCRIPTION
SHORT-FORM DATA
The Dimension CD-Series offer DIN-rail DC/DC converters
in the 92-120W output power range in a very compact
housing. These DC/DC converters are allowed to run
with a battery or similar sources.
Output voltage
Adjustment range
Output current
The CD5.121 converts a 24V voltage to a 12V voltage.
The CD5.121 includes all the essential basic functions
and has a power reserve of 20% included. This extra
power can be used continuously up to +45°C.
The output is electrically isolated from the input in a
safe way. The input is protected against reversed
voltages and contains a soft start function.
CD-Series
CD5.121
24V->12V
CD5.243
12V->24V
CD5.242
48V->24V
Related products
24V->24V
CD5.241
SLD2.100
24V->5V
24V->24V, NEC Class 2,
CD5.241-L1 Spring-clamp-terminals,
24V->24V,
CD5.241-S1 Spring-clamp-terminals,
Input-low, DC-OK signals
ORDER NUMBERS
DC 12V
12 - 15V
8 – 6.4A
9.6 – 7.7A
Output power
96W
115W
Output ripple
< 75mVpp
Input voltage
DC 24V
Input voltage range 18 to 32.4Vdc
14,4 to 18Vdc
Input current
typ. 4.6A
Input inrush current typ. 1.2A peak
Efficiency
88.2%
Losses
12.8W
Temperature range -25°C to +70°C
Derating
2.5W/°C
Hold-up time
typ. 7ms
Dimensions
32x124x102mm
Weight
425g / 0.94lb
ambient <60°C
ambient <45°C
ambient <60°C
ambient <45°C
20Hz to 20MHz
full specified
with derating
at 24Vdc input
at 24Vdc input
at 24Vdc input
operational
+60 to +70°C
at 24Vdc input
WxHxD
MARKINGS
DC/DC Converter
CD5.121
Standard unit
Accessory
ZM1.WALL
ZM11.SIDE
Wall mount bracket
Side mount bracket
Ind. Cont. Eq.
UL 508
UL 60950-1
IECEx
Class I Div 2
EMC, ATEX
ATEX
II 3G Ex nA nC II T4 Gc
Marine
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
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CD5.121
DC/DC Converter 12V, 8A
CD-Series
INDEX
Page
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
Intended Use .......................................................3
Installation Requirements...................................3
Input Voltage ......................................................4
Soft-start and Input Inrush Current Surge .........5
Output .................................................................6
Hold-up Time.......................................................7
Efficiency and Power Losses................................8
Functional Diagram.............................................9
Front Side and User Elements.............................9
Terminals and Wiring........................................10
Reliability ...........................................................10
EMC....................................................................11
Environment ......................................................12
Protection Features ...........................................13
Safety Features ..................................................13
Dielectric Strength ............................................14
Approvals...........................................................15
Page
18. RoHS, REACH and Other Fulfilled Standards .. 15
19. Physical Dimensions and Weight ..................... 16
20. Accessories ........................................................ 17
21. Application Notes............................................. 18
21.1. Peak Current Capability ...........................18
21.2. Back-feeding Loads ..................................18
21.3. Inductive and Capacitive Loads................18
21.4. Charging of Batteries ...............................19
21.5. External Input Protection.........................19
21.6. Requirements for the Supplying Source..19
21.7. Parallel Use to Increase Output Power....20
21.8. Parallel Use for Redundancy ....................20
21.9. Daisy Chaining of Outputs .......................21
21.10. Series Operation .......................................21
21.11. Use in a Tightly Sealed Enclosure ............21
21.12. Mounting Orientations ............................22
The information presented in this document is believed to be accurate and reliable and may change without notice.
Some parts of this unit are patent by PULS (US patent No 091662,063, Des. 424,529, …).
No part of this document may be reproduced or utilized in any form without permission in writing from PULS GmbH.
TERMINOLOGY AND ABREVIATIONS
PE and
symbol
PE is the abbreviation for Protective Earth and has the same meaning as the symbol
.
Earth, Ground
This document uses the term “earth” which is the same as the U.S. term “ground”.
T.b.d.
To be defined, value or description will follow later.
DC 24V
A figure displayed with the AC or DC before the value represents a nominal voltage with
standard tolerances included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
24Vdc
A figure with the unit (Vac) at the end is a momentary figure without any additional
tolerances included.
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
2/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
1. INTENDED USE
This device is designed for installation in an enclosure and is intended for the general use such as in industrial control,
office, communication, and instrumentation equipment.
Do not use this DC/DC converter in equipment where malfunction may cause severe personal injury or threaten human
life.
2. INSTALLATION REQUIREMENTS
This device may only be installed and put into operation by qualified personnel.
This device does not contain serviceable parts. The tripping of an internal fuse (if included) is caused by an internal
defect.
If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to
the factory for inspection.
Mount the unit on a DIN-rail so that the output terminals are located on top and input terminal on the bottom. For
other mounting orientations see de-rating requirements in this document.
This device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do
not cover ventilation grid (e.g. cable conduits) by more than 30%!
Keep the following installation clearances: 40mm on top, 20mm on the bottom, 5mm on the left and right sides are
recommended when the device is loaded permanently with more than 50% of the rated power. Increase this clearance
to 15mm in case the adjacent device is a heat source (e.g. another DC/DC converter).
The input must be powered from a SELV source (according to IEC 60950-1), a PELV source (according to IEC 62477-1) or
an Isolated Secondary Circuit (according to UL 508).
WARNING
Risk of electrical shock, fire, personal injury or death.
- Do not use the DC/DC-converter without proper grounding (Protective Earth). Use the terminal on the input block
for earth connection and not one of the screws on the housing.
- Turn power off before working on the device. Protect against inadvertent re-powering.
- Make sure that the wiring is correct by following all local and national codes.
- Do not modify or repair the unit.
- Do not open the unit as high voltages may present inside.
- Use caution to prevent any foreign objects from entering the housing.
- Do not use in wet locations or in areas where moisture or condensation can be expected.
- Do not touch during power-on, and immediately after power-off. Hot surface may cause burns.
Notes for use in hazardous location areas:
The DC/DC Converter is suitable for use in Class I Division 2 Groups A, B, C, D locations and for use in Group II Category
3 (Zone 2) environments and are evaluated according to EN 60079-0 and EN 60079-15.
WARNING EXPLOSION HAZARDS!
Substitution of components may impair suitability for this environment. Do not disconnect the unit or operate the
voltage adjustment unless power has been switched off or the area is known to be non-hazardous.
A suitable enclosure must be provided for the end product which has a minimum protection of IP54 and fulfils the
requirements of the EN 60079-15.
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
3/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
3. INPUT VOLTAGE
Input voltage
Input voltage range
nom.
DC 24V
18.0-32.4Vdc
14.4-18.0Vdc
36.0Vdc
max.
Allowed voltage between input
and earth
Allowed input ripple voltage
Turn-on voltage
Shut-down voltage
Input current
Start-up delay
Rise time
Turn-on overshoot
Input capacitance
max.
max.
60Vdc or
42.2Vac
5Vpp
typ.
typ.
typ.
typ.
typ.
typ.
typ.
max.
typ.
17.5Vdc
14.0Vdc
35.0Vdc
4.6A
420ms
210ms
240ms
500mV
3 000μF
full specified
maximal 60 seconds or with de-rating see Fig. 3-2
absolute maximum continuous input voltage with no
damage to the DC/DC converter
in case the output voltage is not grounded.
47Hz-500Hz, the momentary input voltage must always
be within the specified limits.
steady-state value, see Fig. 3-1
steady-state value, see Fig. 3-1
steady-state value, see Fig. 3-1
at 24Vdc input and output 12V, 8A, see Fig. 3-4
see Fig. 3-3
0mF, 12V, constant current load 5A, see Fig. 3-3
8mF, 12V, constant current load 5A, see Fig. 3-3
see Fig. 3-3
external capacitors on the input voltage bus are allowed
without any limitations.
Fig. 3-2 Allowable output current below 18V
input voltage
Fig. 3-1 Input voltage range
Rated input range
POUT
Turn-on
10A
(a)
8
(b)
6
32.4Vdc
35.0Vdc
VIN
17.5Vdc
18.0Vdc
14.0Vdc
Shut-down
Output Current
Fig. 3-3 Turn-on behavior, definitions
Input
Voltage
(a) Ambient < 45°C
(b) Ambient < 60°C
4
2
Input Voltage
0
14
16
18
Input
Current,
typ.
dc
8V
:1
t
u
c
I np
4Vd
t: 2
u
p
In
6
Start-up
delay
Rise
Time
Overshoot
4
Output
Voltage
24Vdc
Fig. 3-4 Input current vs. output load
8A
- 5%
22
20
2
Output Current
0
1
2
3
4
5
6
7
8
9 10A
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
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CD5.121
DC/DC Converter 12V, 8A
CD-Series
4. SOFT-START AND INPUT INRUSH CURRENT SURGE
Inrush current limitation
An active inrush limitation circuit (inrush limiting resistor which is bypassed by a relay contact) limits the input inrush
current after turn-on of the input voltage.
The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.
Inrush current
max.
typ.
typ.
Inrush energy
1.6Apeak
1.2Apeak
negligible
-25°C to +70°C, input: 24Vdc
-25°C to +70°C, input: 24Vdc
-25°C to +70°C, input: 24Vdc
Fig. 4-1 Input inrush current, typical behavior
Input Current
Input Voltage
Input:
Output:
Ambient:
24Vdc
12V, 8A, constant current load
25°C
Upper curve:
Middle curve:
Lower curve:
Time basis:
Input current 2A / DIV
Input voltage 20V / DIV
Output voltage 10V / DIV
100ms / DIV
Output Voltage
Soft-start function:
After the DC/DC converter is turned on, the internal output current rises slowly to its nominal value. This method
charges the output capacitors (internal and external capacitors) slowly and avoids high input currents during turn-on.
High input currents can produce a high voltage drop on the input wiring (especially with long and thin cables) which
reduces the terminal voltage on the DC/DC converter. If the terminal voltage is below the shut-down voltage, the
DC/DC converter will turn-off and will make a new start-up attempt. This effect is avoided with the integrated softstart function. Please note, that this function increases the rise time of the output voltage by a small amount.
Fig. 4-2 Soft-start behavior
Input Current
Input:
24Vdc
Output:
12V, 8A, constant current load
Ambient:
25°C
No additional external output capacitors
Upper curve:
Lower curve:
Time basis:
Input current 2A / DIV
Output voltage 5V / DIV
20ms / DIV
Output Voltage
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
5/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
5. OUTPUT
Output voltage
Adjustment range
nom.
min.
max.
Factory setting
Line regulation
Load regulation
Ripple and noise voltage
Output current
max.
max.
max.
nom.
nom.
nom.
nom.
nom.
nom.
min.
max.
typ.
Output power
Short-circuit current
Output capacitance
12V
12-15V
16.1V
12.0V
25mV
120mV
75mVpp
9.6A
8A
7.7A
6.4A
115W
96W
14A
18A
6 500μF
Fig. 5-1 Output voltage vs. output current at
24Vdc input voltage, typ.
Output Voltage
guaranteed
at clockwise end position of potentiometer
±0.2%, at full load, cold unit
Input voltage variations between 18 to 32.4Vdc
static value, 0A Æ 8A
20Hz to 20MHz, 50Ohm
at 12V, ambient < 45°C, see Fig. 5-1
at 12V, ambient < 60°C, see Fig. 5-1
at 15V, ambient < 45°C, see Fig. 5-1
at 15V, ambient < 60°C, see Fig. 5-1
for ambient temperatures < 45°C
for ambient temperatures < 60°C
continuous current, short circuit impedance 150mOhm
continuous current, short circuit impedance 150mOhm
Fig. 5-2 Current limitation vs. input voltage,
(11.5V constant voltage load), typ.
Output Current
18V
11A
Adjustment
Range
15
10.8
12
10.6
9
10.4
6
10.2
3
10.0
Output Current
0
0
2
4
6
Input Voltage
9.8
8 10 12 14 16 18A
15
18
21
24
27
30
33Vdc
Peak current capability (up to several milliseconds)
The DC/DC converter can deliver a peak current, which is higher than the specified short term current. This helps to
start current demanding loads or to safely operate subsequent circuit breakers.
The extra current is supplied by the output capacitors inside the DC/DC converter. During this event, the capacitors will
be discharged and causes a voltage dip on the output. Detailed curves can be found in chapter 21.1.
Peak current voltage dips
typ.
typ.
typ.
from 12V to 8.3V
from 12V to 6.2V
from 12V to 4.3V
at 16A for 50ms, resistive load
at 40A for 2ms, resistive load
at 40A for 5ms, resistive load
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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CD5.121
DC/DC Converter 12V, 8A
CD-Series
6. HOLD-UP TIME
The input side of the DC/DC converter is equipped with a bulk capacitor which keeps the output voltage alive for a
certain period of time when the input voltage dips or is removed. The bulk capacitor can be discharged by loading the
DC/DC converter on the output side or through a load which is parallel to the input. There is no protection in the
DC/DC converter which prevents current from flowing back to the input terminals. If prevention is needed, an external
diode should be used.
Hold-up Time
typ.
typ.
12.8ms
7ms
input 24Vdc, output: 12Vdc, 4A, see Fig. 6-1
input 24Vdc, output: 12Vdc, 8A, see Fig. 6-1
Fig. 6-1 Hold-up time vs. input voltage
Hold-up Time
12ms
10
(a)
(b)
8
(c)
(d)
6
4
(a) 12V, 4A, typ.
(b) 12V, 4A, min.
(c) 12V, 8A, typ.
(d) 12V, 8A, min.
2
Input Voltage
0
18
20
22
24
28Vdc
26
Fig. 6-2 Shut-down test setup
S1
+
DC
Source
-
DC/DC
Converter
Input
+
Intput
Voltage
S1 opens
+
CD5
Output -
Fig. 6-3 Shut-down behavior, definitions
Load
-
- 5%
Output
Voltage
Hold-up Time
Note: At no load, the hold-up time can be up to several seconds. The green DC-ok lamp is also on during this time.
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
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CD5.121
DC/DC Converter 12V, 8A
CD-Series
7. EFFICIENCY AND POWER LOSSES
Efficiency
Power losses
Fig. 7-1
Input 24Vdc
88.2%
0.6W
6.4W
12.8W
16.8W
typ.
typ.
typ.
typ.
typ.
Efficiency vs. output current at 12V
output and 24Vdc input voltage, typ.
Efficiency
at 12V, 8A
at no output load
at 12V, 4A
at 12V, 8A
at 12V, 9.6A
Fig. 7-2
Losses vs. output current at 12V
output and 24Vdc input voltage, typ.
Power Losses
90%
18W
89
15
88
12
87
9
86
6
85
3
Output Current
84
1
Fig. 7-3
2
3
4
5
Output Current
0
6
7
8A
Efficiency vs. input voltage at 12V,
8A, typ.
0
Fig. 7-4
1
3
4
5
6
7
8A
Losses vs. input voltage at 12V, 8A,
typ.
Efficiency
Power Losses
89%
24W
88.5
20
88.0
16
87.5
12
87.0
8
4
86.5
86.0
18
2
Input Voltage
20
22
24
26
Input Voltage
0
28
30 32Vdc
18
20
22
24
26
28
30 32Vdc
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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CD5.121
DC/DC Converter 12V, 8A
CD-Series
8. FUNCTIONAL DIAGRAM
Fig. 8-1 Functional diagram
Output
Voltage
Regulator
+
-
Input Fuse
&
Input Filter
Chassis
Ground
Reverse
Polarity
Protection
&
Inrush
Limiter
OverTemperature
Protection
Power
Converter
VOUT
Output
Filter
Output
OverVoltage
Protection
+
+
DC
ok
9. FRONT SIDE AND USER ELEMENTS
Fig. 9-1 Front side
A
Input terminals
Screw terminals
+ Positive input
- Negative (return) input
Chassis ground: can be used to bond the housing to PE
Ground this terminal to minimize high-frequency emissions.
B
Output terminals
Screw terminals, dual terminals per pole, both pins are equal
+ Positive output
- Negative (return) output Screw terminals
C
Output voltage potentiometer
Open the flap to set the output voltage. Factory set: 12.0V
D
DC-OK LED (green)
On when the voltage on the output terminals is > 8.5V
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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CD5.121
DC/DC Converter 12V, 8A
CD-Series
10. TERMINALS AND WIRING
Type
Solid wire
Stranded wire
American Wire Gauge
Wire stripping length
Screwdriver
Recommended tightening torque
Input
screw terminals
max. 6mm2
max. 4mm2
20-10 AWG
7mm / 0.275inch
3.5mm slotted or
Pozidrive No 2
1Nm, 9lb.in
Output
screw terminals
max. 6mm2
max. 4mm2
20-10 AWG
7mm / 0.275inch
3.5mm slotted or
Pozidrive No 2
1Nm, 9lb.in
Instructions:
a) The external circuitry of all terminals must meet the safety requirements stipulated by IEC/EN/UL 60950-1: SELV.
b) Use appropriate copper cables that are designed for an operating temperature of:
60°C for ambient up to 45°C and
75°C for ambient up to 60°C minimum.
c) Follow national installation codes and installation regulations!
d) Ensure that all strands of a stranded wire enter the terminal connection!
e) Do not load the terminals with more than 25A! See section 21.9
f) Screws of unused terminal compartments should be securely tightened.
g) Ferrules are allowed.
h) Do not connect or disconnect the wires from the terminals below -25°C (-13°F).
11. RELIABILITY
Lifetime expectancy *)
MTBF **) SN 29500, IEC 61709
MTBF **) MIL HDBK 217F
Input 24Vdc
173 000h
63 000h
35 000h
179 000h
1 161 000h
1 904 000h
610 000h
817 000h
at 12V, 4A and 40°C
at 12V, 8A and 40°C
at 12V, 9.6A and 40°C
at 12V, 8A and 25°C
at 12V, 8A and 40°C
at 12V, 8A and 25°C
at 12V, 8A and 40°C; Ground Benign GB40
at 12V, 8A and 25°C; Ground Benign GB25
*)
The Lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the lifetime
expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according to the
capacitor’s manufacturer specification. The prediction model allows only a calculation of up to 15 years from date of shipment.
**) MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of a
device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that
statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit
has been running for 50 000h or only for 100h.
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
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CD5.121
DC/DC Converter 12V, 8A
CD-Series
12. EMC
The DC/DC converter is suitable for applications in industrial environment as well as in residential, commercial and
light industry environment without any restrictions.
EMC Immunity
Electrostatic discharge
Electromagnetic RF field
Fast transients (Burst)
Surge voltage on input
Surge voltage on output
Conducted disturbance
Generic standards: EN 61000-6-1 and EN 61000-6-2
EN 61000-4-2
Contact discharge
Air discharge
EN 61000-4-3
80MHz-2.7GHz
EN 61000-4-4
Input lines
Output lines
EN 61000-4-5
+Æ+/- Æ chassis ground
EN 61000-4-5
+Æ+ / - Æ chassis ground
EN 61000-4-6
0.15-80MHz
8kV
15kV
10V/m
4kV
2kV
1kV
2kV
500V
1kV
10V
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterion A
Criterions:
A: DC/DC converter shows normal operation behavior within the defined limits.
C: Temporary loss of function is possible. DC/DC converter may shut-down and restarts by itself. No damage or hazards for the DC/DC
converter will occur.
EMC Emission
Conducted emission
Generic standards: EN 61000-6-3 and EN 61000-6-4
Class B, input lines
(Limits for DC power ports)
Class B
IEC/CISPR 16-1-2, IEC/CISPR 16-2-1
Radiated emission
EN 55011, EN 55022
This device complies with FCC Part 15 rules.
Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired operation.
Switching frequency
Variable between 90kHz and 145kHz depending on load and input voltage
(output current > 0.5A)
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
11/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
13. ENVIRONMENT
Operational temperature *)
Storage temperature
Output de-rating
Humidity **)
Vibration sinusoidal ***)
Shock ***)
Altitude
-25°C to +70°C (-13°F to 158°F)
-40 to +85°C (-40°F to 185°F)
1.25W/°C
2.5W/°C
5 to 95% r.H.
2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g
2 hours / axis
30g 6ms, 20g 11ms
3 bumps / direction, 18 bumps in total
0 to 6000m (0 to 20 000ft)
reduce output power according Fig. 13-1
for storage and transportation
45-60°C (113°F to 140°F)
60-70°C (140°F to 158°F)
IEC 60068-2-30
IEC 60068-2-6
IEC 60068-2-27
reduce output power or ambient temperature
above 2000m sea level.
6W/1000m or 5°C/1000m
above 2000m (6500ft), see Fig. 13-2
III
IEC 62477-1, EN 50178, altitudes up to 2000m
II
altitudes from 2000m to 6000m
2
IEC 62477-1, EN 50178, not conductive
The unit does not release any silicone or other LABS-critical substances and is suitable for
use in paint shops.
Altitude de-rating
Over-voltage category
Degree of pollution
LABS compatibility
*) Operational temperature is the same as the ambient temperature and is defined as the air temperature 2cm below the unit.
**) Do not energize while condensation is present
***) Tested in combination with DIN-Rails according to EN 60715 with a height of 15mm and a thickness of 1.3mm and standard mounting
orientation.
Fig. 13-1 Output current vs. ambient temp.
Allowable Output
Current at 12V
short term
Fig. 13-2 Output current vs. altitude at 24V
Allowable Output
Current at 12V
10A
10A
8
8
6
6
4
4
2
2
0
-25
Ambient Temperature
0
20
45
short term
C
B
A
A... Tamb < 60°C
B... Tamb < 50°C
C... Tamb < 40°C
Altitude
0
60 70°C
0
2000
4000
6000m
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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12/22
CD5.121
CD-Series
DC/DC Converter 12V, 8A
14. PROTECTION FEATURES
Output protection
Output over-voltage protection
Electronically protected against overload, no-load and short-circuits *)
typ. 16.5Vdc
in case of an internal power supply defect, a redundant
max. 16.8Vdc
circuit limits the maximum output voltage. The output
shuts down and automatically attempts to restart.
Reverse input polarity protection Included
unit does not start when input voltage is reversed
Output over-current protection
electronically limited *)
see Fig. 5-1
Degree of protection
IP 20
EN/IEC 60529
Penetration protection
> 3.5mm
e.g. screws, small parts
Over-temperature protection
yes
output shut-down with automatic restart
Input transient protection
MOV
Metal Oxide Varistor
Internal input fuse
included
not user replaceable
*)
In case of a protection event, audible noise may occur.
15. SAFETY FEATURES
Classification of output voltage
Class of protection
Isolation resistance
PE resistance
Touch current (leakage current)
*)
SELV
PELV
III
IEC/EN 60950-1
IEC/EN 60204-1, EN 50178, IEC 62477-1, IEC 60364-4-41
PE (Protective Earth) connection not required. A
connection of the “Chassis Ground” pin to earth is
recommended for best EMI performance
> 5MOhm
input to output, 500Vdc
< 0.1Ohm
between housing and Chassis Ground terminal
The leakage current which is produced by the DC/DC converter itself depends on the
input voltage ripple and need to be investigated in the final application.
For a smooth DC input voltage, the produced leakage current is less than 100μA.
provided, that the input voltage meets the requirements of chapter 2.
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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CD5.121
DC/DC Converter 12V, 8A
CD-Series
16. DIELECTRIC STRENGTH
The output voltage is floating and has no ohmic connection to the ground.
Type and factory tests are conducted by the manufacturer. Field tests may be conducted in the field using the
appropriate test equipment which applies the voltage with a slow ramp (2s up and 2s down). Connect all phaseterminals together as well as all output poles before conducting the test. When testing, set the cut-off current settings
to the value in the table below.
Fig. 16-1 Dielectric strength
Type test
Input
+
B
-
60s
A
1500Vac
B
1500Vac
C
500Vac
Factory test
5s
1500Vac
1500Vac
500Vac
Field test
5s
1000Vac
1000Vac
500Vac
> 30mA
> 30mA
> 12mA
Cut-off current setting
Output
A
Chassis
ground
+
C
-
To fulfill the PELV requirements according to EN60204-1 § 6.4.1, we
recommend that either the + pole, the – pole or any other part of
the output circuit shall be connected to the protective earth
system. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth
faults occur.
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
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CD5.121
DC/DC Converter 12V, 8A
CD-Series
17. APPROVALS
EC Declaration of Conformity
The CE mark indicates conformance with the
- EMC directive and the
- ATEX directive.
CB Scheme,
Information Technology Equipment
IEC 60950-1
2nd Edition
UL 508
IND. CONT. EQ.
UL 60950-1
EN 60079-0, EN 60079-15
ATEX
II 3G Ex nA nC II T4 Gc
IEC 60079-0, IEC 60079-15
ANSI / ISA 12.12.01-2007
Class I Div 2
Marine
EAC TR Registration
IECEx
LISTED for use as Industrial Control Equipment;
U.S.A. (UL 508) and Canada (C22.2 No. 107-1-01);
E-File: E198865
RECOGNIZED for the use as Information Technology
Equipment, Level 3; U.S.A. (UL 60950-1) and Canada (C22.2
No. 60950-1); E-File: E137006
Approval for use in hazardous locations Zone 2 Category 3G.
Number of ATEX certificate: EPS 08 ATEX 1 142 X
The device must be built-in in an IP54 enclosure.
Suitable for use in Class 1 Zone 2 Groups IIa, IIb and IIc
locations. Number of IECEx certificate: IECEx EPS 14.0001X
Recognized for use in Hazardous Location Class I Div 2 T4
Groups A,B,C,D systems; U.S.A. (ANSI / ISA 12.12.01) and
Canada (C22.2 No. 213-M1987)
GL (Germanischer Lloyd) classified and
ABS (American Bureau for Shipping) PDA
Environmental category: C, EMC2
Marine and offshore applications
Registration for the Eurasian Customs Union market
(Russia, Kazakhstan, Belarus)
18. ROHS, REACH AND OTHER FULFILLED STANDARDS
RoHS Directive
REACH Directive
Directive 2011/65/EU of the European Parliament and the
Council of June 8th, 2011 on the restriction of the use of
certain hazardous substances in electrical and electronic
equipment.
Directive 1907/2006/EU of the European Parliament and the
Council of June 1st, 2007 regarding the Registration,
Evaluation, Authorisation and Restriction of Chemicals
(REACH)
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
15/22
CD5.121
CD-Series
DC/DC Converter 12V, 8A
19. PHYSICAL DIMENSIONS AND WEIGHT
Weight
DIN-Rail
Installation Clearances
425g / 0.94lb
Use 35mm DIN-rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm.
The DIN-rail height must be added to the unit depth (102mm) to calculate the total required
installation depth.
See chapter 2
Fig. 19-1 Front view
Fig. 19-2 Side view
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
16/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
20. ACCESSORIES
ZM1.WALL Wall mounting bracket
This bracket is used to mount specific Dimension units onto a flat surface without utilizing a DIN-Rail. The two
aluminum brackets and the black plastic slider of the unit have to be removed, so that the two steel brackets can be
mounted.
Fig. 20-1 ZM1.WALL Wall mounting bracket
*)
Fig. 20-2 Assembled wall mounting bracket *)
Picture of the DC/DC converter is for representation only
ZM11.SIDE Side mounting bracket
This bracket is used to mount Dimension units sideways with or without utilizing a DIN-Rail. The two aluminum
brackets and the black plastic slider of the unit have to be detached, so that the steel brackets can be mounted.
For sideway DIN-rail mounting, the removed aluminum brackets and the black plastic slider need to be mounted on
the steel bracket.
Fig. 20-3
ZM11.SIDE Side mounting bracket *)
*)
Fig. 20-4
Side mounting with DIN-rail brackets *)
Picture of the DC/DC converter is for representation only
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
17/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
21. APPLICATION NOTES
21.1. PEAK CURRENT CAPABILITY
Solenoids, contactors and pneumatic modules often have a steady state coil and a pick-up coil. The inrush current
demand of the pick-up coil is several times higher than the steady-state current and usually exceeds the nominal
output current (including the PowerBoost) The same situation applies, when starting a capacitive load.
Branch circuits are often protected with circuit breakers or fuses. In case of a short or an overload in the branch circuit,
the fuse needs a certain amount of over-current to trip or to blow. The peak current capability ensures the safe
operation of subsequent circuit breakers.
Assuming the input voltage is turned on before such an event, the built-in large sized output capacitors inside the
DC/DC converter can deliver extra current. Discharging this capacitor causes a voltage dip on the output. The following
two examples show typical voltage dips:
Fig. 21-1 Peak loading with 2x the nominal
current for 50ms, typ.
Fig. 21-2 Peak loading with 5x the nominal
current for 5ms, typ.
12V
12V
Output
Voltage
Output
Voltage
8.3V
4.3V
40A
16A
Output
Current
Output
Current
1A
1A
10ms/DIV
1ms/DIV
Peak load 16A (resistive load) for 50ms
Output voltage dips from 12V to 8.3V.
Peak load 40A (resistive load) for 5ms
Output voltage dips from 12V to 4.3V.
21.2. BACK-FEEDING LOADS
Loads such as decelerating motors and inductors can feed voltage back to the DC/DC converter. This feature is also
called return voltage immunity or resistance against Back- E.M.F. (Electro Magnetic Force).
This DC/DC converter is resistant and does not show malfunctioning when a load feeds back voltage to the DC/DC
converter. It does not matter, whether the DC/DC converter is on or off.
The maximum allowed feed-back-voltage is 16Vdc. The absorbing energy can be calculated according to the built-in
large sized output capacitance which is specified in chapter 5.
21.3. INDUCTIVE AND CAPACITIVE LOADS
The unit is designed to supply any kind of loads, including unlimited capacitive and inductive loads.
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0
Germany
18/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
21.4. CHARGING OF BATTERIES
The DC/DC converter can be used to charge lead-acid or maintenance free 12V VRLA batteries.
Instructions for charging batteries:
a)
Ensure that the ambient temperature of the DC/DC converter is below 45°C
b)
Do not use DC/DC converters in mounting orientations other than the standard mounting orientation (input
terminals on the bottom and output terminals on top of the unit).
c)
Set output voltage (measured at no load and at the battery end of the cable) very precisely to the end-of-charge
voltage.
End-of-charge voltage
13.9V
13.75V
13.6V
13.4V
Battery temperature
10°C
20°C
30°C
40°C
d)
Use a 10A circuit breaker (or blocking diode) between the DC/DC converter and the battery.
e)
Ensure that the output current of the DC/DC converter is below the allowed charging current of the battery.
f)
The return current to the DC/DC converter (battery discharge current) is typ. 15mA when the DC/DC converter is
switched off (except in case a blocking diode is utilized).
21.5. EXTERNAL INPUT PROTECTION
The unit is tested and approved for branch circuits up to 50A. An external protection is only required, if the supplying
branch has an ampacity greater than this. Check also local codes and local requirements. In some countries local
regulations might apply.
If an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of
the circuit breaker. A minimum value of 10A B- or 8A C-Characteristic breaker should be used.
21.6. REQUIREMENTS FOR THE SUPPLYING SOURCE
In certain circumstances, the input filter of the DC/DC converter can show a resonant effect which is caused by the
supplying network. Especially when additional external input filters are utilized, a superimposed AC voltage can be
generated on the input terminals of the DC/DC converter which might cause a malfunction of the unit. Therefore,
additional input filters are not recommended. To avoid the resonant effects, the minimal resistance of the supplying
network which depends on the inductance of the input network, shall be above the boundary curve in Fig. 21-3.
Fig. 21-3 External input filter requirements to
avoid filter instabilities
Resistance of the
supplying network
1 Ohm
(a)
(b)
100 mOhm
10 mOhm
(a) max.
(b) typ.
1 mOhm
0.1mH
1mH
10mH
Inductance of the supplying network
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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Germany
19/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
21.7. PARALLEL USE TO INCREASE OUTPUT POWER
Unit A
The DC/DC-converter can be paralleled to increase the output power. There are
no feature included which balances the load current between the DC/DCconverters. Therefore some restrictions and limitations apply. The DC/DCconverter with the higher adjusted output voltage draws current until it goes
into current limitation. This means no harm or switch-off to this DC/DC-converter
as long as the ambient temperature stays below 45°C. The CD5.121 can also be
paralleled with power supplies from the QS10.121 from the DIMENSION QSseries. For other power supplies consult PULS.
Input
Output
Unit B
Input
+
-
Load
+
+
-
Output
The output voltages of all DC/DC-converters shall be adjusted to the same value
(±100mV) at full load. A fuse or diode on the output of each unit is only required
if more than three units are connected in parallel. This avoid that more than 2 times of the nominal output current can
flow backwards into the DC/DC converter in case the output stage of one DC/DC converter has a defect. If a fuse (or
circuit breaker) is used, choose one with approximately 150% of the rated output current of one DC/DC-converter.
Keep an installation clearance of 15mm (left / right) between two DC/DC-converters and avoid installing the DC/DCconverters on top of each other. Do not use DC/DC-converters in parallel in mounting orientations other than the
standard mounting orientation (input terminals on the bottom and output terminals on top of the unit).
21.8. PARALLEL USE FOR REDUNDANCY
The DC/DC converters can be paralleled for 1+1 redundancy to gain higher system availability. Redundant systems
require a certain amount of extra power to support the load in case one DC/DC converter fails. The simplest way is to
put two DC/DC converters in parallel. This is called a 1+1 redundancy. In case one DC/DC converter fails, the other one
is automatically able to support the load current without any interruption. Redundant systems for a higher power
demand are usually built in an N+1 method. E.g. six DC/DC converters, each rated for 8A are paralleled to build a 40A
redundant system.
Furthermore, 1+1 redundant systems can be built by using a DC/DC converter powered from a battery and a power
supply with AC input.
Please note: This simple way to build a redundant system does not cover failures such as an internal short circuit in
the secondary side of the DC/DC-converter. In such a case, the defect unit becomes a load for the other DC/DCconverters and the output voltage can not be maintained any more. This can only be avoided by utilizing decoupling
diodes which are included in the decoupling module YR2.DIODE.
Recommendations for building redundant power systems:
a)
Use separate input fuses for each DC/DC-converter.
b)
Monitor the individual DC/DC-converter units.
c)
1+1 Redundancy is allowed up to an ambient temperature of 60°C
N+1 Redundancy is allowed up to an ambient temperature of 45°C
d)
It is desirable to set the output voltages of all units to the same value (± 100mV) or leave it at the factory setting.
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0
Germany
20/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
21.9. DAISY CHAINING OF OUTPUTS
Daisy chaining (jumping from one DC/DC-converter output to the next) is allowed as long as the average output
current through one terminal pin does not exceed 25A. If the current is higher, use a separate distribution terminal
block.
Fig. 21-4 Daisy chaining of outputs
Fig. 21-5 Using distribution terminals
max 25A!
+
-
Output
+ + - -
Output
+ + - -
DC/DC
Converter
DC/DC
Converter
DC/DC
Converter
DC/DC
Converter
Input
Input
Input
Input
Load
Output
+ + - -
Output
+ + - -
21.10. SERIES OPERATION
+
-
Load
Distribution
Terminals
Unit A
+
Input
DC/DC converters of the exact same type can be connected in series for higher
output voltages. It is possible to connect as many units in series as needed,
providing the sum of the output voltage does not exceed 150Vdc. Voltages with
Output
a potential above 60Vdc are not SELV any more and can be dangerous. Such
voltages must be installed with a protection against touching. Earthing of the
Unit B
+
output is required when the sum of the output voltage is above 60Vdc. Avoid
Input
return voltage (e.g. from a decelerating motor or battery) which is applied to the
output terminals. Keep an installation clearance of 15mm (left / right) between
two DC/DC-converters and avoid installing the DC/DC-converters on top of each
Output
other. Do not use DC/DC-converters in series in mounting orientations other than
the standard mounting orientation (input terminals on the bottom and output terminals on top of the unit).
Load
+
-
21.11. USE IN A TIGHTLY SEALED ENCLOSURE
When the DC/DC-converter is installed in a tightly sealed enclosure, the temperature inside the enclosure will be
higher than outside. In such situations, the inside temperature defines the ambient temperature for the DC/DCconverter.
The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure.
The DC/DC-converter is placed in the middle of the box, no other heat producing items are inside the box
Enclosure:
Load:
Input:
Temperature inside enclosure:
Temperature outside enclosure:
Temperature rise:
Rittal Typ IP66 Box PK 9516 100, plastic, 110x180x165mm
12V, 6.4A; (=80%) load is placed outside the box
24Vdc
48.0°C (in the middle of the right side of the DC/DC converter with a distance of 2cm)
22.6°C
25.4K
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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21/22
CD5.121
DC/DC Converter 12V, 8A
CD-Series
21.12. MOUNTING ORIENTATIONS
Mounting orientations other than input terminals on the bottom and output on the top require a reduction in
continuous output power or a limitation in the max. allowed ambient temperature. The amount of reduction
influences the lifetime expectancy of the DC/DC converter. Therefore, two different derating curves for continuous
operation can be found below:
Curve A1
Curve A2
Recommended output current.
Max allowed output current (results in approximately half the lifetime expectancy of A1).
Fig. 21-6
Mounting
Orientation A
(Standard
orientation)
Output Current
OUTPUT
10A
8
6
4
2
0
DC/DC
Converter
INPUT
A1
Ambient Temperature
10
Fig. 21-7
Mounting
Orientation B
(Upside down)
INPUT
10A
8
6
4
2
0
DC/DC
Converter
OUTPUT
Fig. 21-8
Mounting
Orientation C
(Table-top
mounting)
40
50
60°C
A2
A1
Ambient Temperature
20
30
40
50
60°C
Output Current
10A
8
6
4
2
0
A2
A1
Ambient Temperature
10
20
30
40
50
60°C
Output Current
OUTPUT
DC/DC
Converter
INPUT
10A
8
6
4
2
0
A2
A1
Ambient Temperature
10
20
30
40
50
60°C
INPUT
DC/DC
Converter
Output Current
OUTPUT
Fig. 21-10
Mounting
Orientation E
(Horizontal ccw)
30
Output Current
10
Fig. 21-9
Mounting
Orientation D
(Horizontal cw)
20
10A
8
6
4
2
0
A2
A1
Ambient Temperature
10
20
30
40
50
60°C
Mar. 2016 / Rev. 1.5 DS-CD5.121-EN
All parameters are specified at 12V, 8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0
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