1
ABB
Features
Rated output voltage 24 V DC
Output voltage adjustable via front‑face rotary potentiometer “OUTPUT Adj”
Rated output current 20 A
Rated output power 480 W
Wide range input 115‑230 V AC (90‑264 V AC, 120‑375 V DC)
Typical efficiency of 89 %
Low power dissipation and low heating
Free convection cooling (no forced cooling with ventilators)
Ambient temperature range during operation ‑40...+70 °C
Open‑circuit, overload and short‑circuit stable
Integrated input fuse
Redundancy unit CP‑A RU offering true redundancy, available as accessory
Signalling contact "13‑14" (solid‑state) for output voltage OK
LEDs for status indication
Approvals
AUL 508, CAN/CSA C22.2 No.14 Approval refers to rated input voltage Uin
HANSI/ISA‑12.12 (Class I, Div. 2,
hazardous locations)
HUL 60950, CAN/CSA C22.2 No.60950 Approval refers to rated input voltage Uin
DGOST
ECCC Approval refers to rated input voltage Uin
Marks
aCE
bC‑Tick
Order data
Type Input voltage range Rated output voltage /
current
Order code
CP‑E 24/20.0 90‑264 V AC / 120‑375 V DC 24 V DC / 20 A 1SVR 427 036 R0000
Order data ‑ Accessories
Type Description Order code
CP‑A RU Redundancy unit
The CP‑A RU provides decoupling of two CP‑E power supply
units m 40 V and M 5 A.
1SVR 427 071 R0000
Application
The primary switch mode power supply offers two voltage input ranges. This enables the supply with AC
or DC. Furthermore it is equipped with two generous capacitors, which ensure mains buffering of at least
30 ms (at 230 V AC). That is why the devices can be used worldwide also in high fluctuating networks
and battery‑powered plants.
a OUTPUT L+, L+, L‑, L‑:
terminals ‑ output
b INPUT L, N, PE:
terminals ‑ input
c 13‑14: terminals ‑
signalling contact
d OUTPUT OK: green LED ‑
output voltage OK
e OUTPUT LOW: red LED ‑
output voltage too low
f OUTPUT Adj:
potentiometer ‑
adjustment of the output
voltage
g single/parallel:
sliding switch ‑
adjustment of single or
parallel operation
h Circuit diagram
Power supply CP-E 24/20.0
Primary switch mode power supply
Data sheet
2CDC 271 027 F0008
2ABB
Operating mode
By means of the potentiometer „OUTPUT Adj“ the output voltage can be adjusted within a range of 22.5
to 28.5 V DC. Thus, the power supply can be optimally adapted to the application, e.g. compensating
the voltage drop caused by a long line length.
The green LED „OUTPUT OK“ is lightening during proper operation.
The red LED „OUTPUT LOW“ is lightening when the output voltage is too low.
Switch „single/parallel“ for selection of single or parallel operation.
Signalling contact 13‑14 (max. 60 V DC / 0.3 A) is ON when the output voltage is more than 75 %.
Installation
Mounting
The switch mode power supply can be snapped on a DIN rail
according to IEC/EN 60715 as shown in the accompanying
picture. For that the device is set with its mounting rail slide
on the upper edge of the mounting rail and locked by lifting it
downwards.
Demounting
Remove the switch mode power supply as shown in the
accompanying picture. For that the latching lever is pulled
downwards by means of the screwdriver. Alternatively you
can press the unlock button to release the device. Then in
both cases the device can be unhinged from the mounting
rail edge and removed.
Mounting position
The devices have to be mounted horizontally with the
input terminals on the bottom. In order to ensure a suffi‑
cient convection, the minimum distance to other modules
should not be less than 25 mm in vertical and horizontal
direction.
2CDC 272 021 F0b08
2CDC 272 017 F0b08
2CDC 272 018 F0b08
Power supply CP-E 24/20.0
Primary switch mode power supply
Data sheet
3
ABB
Installation
Electrical connection
Connect the input terminals L and N. The protective earth conductor PE must be connected. The
installation must be executed acc. to EN 60950, provide a suitable disconnecting device (e. g. line
protection switch) in the supply line. The input side is protected by an internal input fuse.
Rate the lines for the maximum output current (considering the short‑circuit current) or provide a
separate fuse protection. We recommend to choose the cable section as large as possible in order to
minimize voltage drops. Observe the polarity. The device is overload, short‑circuit and open‑circuit proof.
The secondary side of the power supply unit is electrically isolated from the input and internally not
earthed (SELV) and can therefore be earthed by the user according to the needs with L+ or L‑ (PELV).
Connection diagram
L+, L‑ Output voltage
L, N Input voltage
13‑14 Signalling contact for output voltage OK
PE Protective earth
Safety instructions and warnings
The device must be installed by qualified persons only and in accordance with the specific national
regulations (e.g., VDE, etc.). The devices are maintenance‑free chassis‑mounted units.
Disconnect system from supply network!
Before any installation, maintenance or modification work: Disconnect the system from the supply
network and protect against switching on.
Before start of operation:
Attention! Improper installation/operation may impair safety and cause operational difficulties or
destruction of the unit. Before operation the following must be ensured:
Connect to main according to the specific national regulations.
Power supply cables and unit must be sufficiently fused. A disconnecting device has to be provided
for the power supply to disengage unit and supply cables from supply mains if required.
The protective earth conductor must be connected to the terminal PE (Protection class I)
The secondary side of the power supply unit is not earthed and can be earthed by the user according
to the needs with L+ or L‑.
Rate the output lines for the output current of the power supply and connect them with the correct
polarity.
In order to ensure sufficient air‑cooling the distance to other devices has to be considered.
In operation:
Do not modify the installation (primary and secondary side)! High current! Risk of electric arcs and
electric shocks (danger to life)!
Risk of burns: Depending on the operation conditions the enclosure can become very hot.
The internal fuse is not user‑replaceable. If the internal fuse blows, most probably the device is
defective. In this case, an examination of the switch mode power supply by the manufacturer is
necessary.
Attention! High voltage! Danger to life!
The power supplies contain components with high stored energy and circuits with high voltage! Do
not introduce any objects into the unit, and do not open the unit. With some units of this range the
output is capable of providing hazardous energy. Ensure that the service personnel is protected against
inadvertent contact with parts carrying energy.
L+ L+ L-13 14
PE NL
L-
L-
L+
L
N
PE
PWM
2CDC 272 024 F0b08
Power supply CP-E 24/20.0
Primary switch mode power supply
Data sheet
4ABB
Power supply CP-E 24/20.0
Primary switch mode power supply
Data sheet
Technical data
Data at Ta = 25 °C, Uin = 230 V AC and rated values, unless otherwise indicated
Type CP-E 24/20.0
Input circuit L, N
Rated input voltage Uin 115‑230 V AC
Input voltage range 90‑264 V AC,
120‑375 V DC
Frequency range AC 47‑63 Hz
Typical input current at 115 V AC 4.9 A
at 230 V AC 2.5 A
Typical power consumption 539 W
Inrush current limiting at 115 V AC 25 A (max. 5 ms)
at 230 V AC 50 A (max. 5 ms)
Discharge current input / output 0.25 mA
input / PE 3.5 mA
Power failure buffering time at 115 V AC min. 25 ms
at 230 V AC min. 30 ms
Internal input fuse 10 A slow‑acting / 250 V AC
Power factor correction (PFC) yes, active, 115 V AC: 0.99 / 230 V AC: 0.97
Indication of operational states
Output voltage OUTPUT OK: green LED V: output voltage OK
OUTPUT LOW: red LED V: output voltage too low
Output circuit L+, L+, L-, L-
Rated output voltage 24 V DC
Tolerance of the output voltage 0...+1 %
Adjustment range of the output voltage 22.5‑28.5 V DC
Rated output power 480 W
Rated output current IrTa m 55 °C 20 A
Derating of the output current 55 °C < Ta m 70 °C 2.5 %/°C
Signalling contact for output voltage OK 13‑14 solid‑state (max. 60 V DC, 0.3 A)
Minimum fuse rating to achieve short‑circuit protection 13‑14 M 60 V DC, m 0.3 A fast‑acting
Maximum deviation with load change statical w1 % (single mode)
w5 % (parallel mode)
change of input voltage within
the input voltage range w0.5 %
Control time < 2 ms
Starting time after applying the supply voltage at Irmax. 1 s
with 7000 µF max. 1.5 s
Rise time at Irmax. 150 ms
with 7000 µF max. 500 ms
Fall time max. 150 ms
Residual ripple and switching peaks BW = 20 MHz 100 mV
Parallel connection configurable, to increase power, up to 3 devices,
min. 0.1 Ir ‑ max. 0.9 Ir
Series connection yes, to increase voltage, max. 2 devices
Resistance to reverse feed max. 35 V DC
Output circuit - No-load, overload and short-circuit behaviour
Characteristic curve of output U/I characteristic curve
Short‑circuit protection continuous short‑circuit proof
Short‑circuit behaviour continuation with output power limiting
5
ABB
Power supply CP-E 24/20.0
Primary switch mode power supply
Data sheet
Type CP-E 24/20.0
Overload protection output power limiting
No‑load protection continuous no‑load stability
Starting of capacitive loads 7000 µF
General data
Power dissipation typ. 63 W
Efficiency typ. 89 %
Duty time 100 %
Dimensions (W x H x D) 175 x 123.6 x 123.6 mm
(6.89 x 4.87 x 4.87 in)
Weight 1.850 kg (4.079 lb)
Material of housing metal
Mounting DIN rail (IEC/EN 60715), snap‑on mounting without any tool
Mounting position horizontal
Minimum distance to other units horizontal / vertical 25 mm / 25 mm (0.98 in / 0.98 in)
Degree of protection housing / terminals IP20 / IP20
Protection class I
Electrical connection - input circuit / output circuit
Wire size fine-strand with wire end ferrule 0.2‑4 mm² (24‑11 AWG)
fine-strand without wire end ferrule 0.2‑6 mm² (24‑10 AWG)
rigid
Stripping length 8 mm (0.31 in)
Tightening torque input / output 1.0 Nm (9 lb.in) / 0.62 Nm (5.5 lb.in)
Environmental data
Ambient temperature range operation ‑40…+70 °C
rated load ‑40...+55 °C
storage ‑40…+85 °C
Damp heat 95 % RH, without condensation
Vibration (sinusoidal) (IEC/EN 60068‑2‑6) 10‑500 Hz, 2 G, along X, Y, Z each axis, 60 min. for each axis
Shock (half‑sine) (IEC/EN 60068‑2‑27) 15 G, 11 ms, 3 axis, 6 faces, 3 times for each face
Isolation data
Rated insulation voltage Uiinput / output 3 kV AC
input / PE 1.5 kV AC
Pollution degree 2
Overvoltage category (UL/IEC/EN 60950‑1) II
Standards
Product standard EN 61204‑3
Low Voltage Directive 2006/95/EC
EMC directive 2004/108/EC
RoHS directive 2002/95/EC
Electrical safety EN 60950‑1, UL 60950‑1, UL 508,
EN 61558‑1, EN 61558‑2‑17, EN 60204‑1
Protective low voltage SELV (EN 60950)
Electromagnetic compatibility
Interference immunity to IEC/EN 61000‑6‑2
electrostatic discharge IEC/EN 61000‑4‑2 Level 4 (air discharge 15 kV / contact discharge 8 kV)
radiated, radio‑frequency, electro‑
magnetic field IEC/EN 61000‑4‑3 Level 3 (10 V/m)
electrical fast transient / burst IEC/EN 61000‑4‑4 Level 4 (4 kV / 2.5 kHz)
surge IEC/EN 61000‑4‑5 L‑L Level 3 (2 kV) / L‑PE Level 4 (4 kV)
6ABB
Power supply CP-E 24/20.0
Primary switch mode power supply
Data sheet
Technical diagrams
Output behaviour
U
out
[
V
]
Iout [A]
81216 20 28 3224
4
4
8
12
16
20
24
28
2CDC 272 008 F0b08
Characteristic curve of output at Ta = 25 °C
The switch mode power supply CP‑E 24/20.0 is able to supply at 24 V DC output voltage and
at an ambient temperature of:
≤ 55 °C a continuous output current of approx. 20 A
at ambient temperatures of:
55 °C < Ta ≤ 70 °C the output power has to be reduced by 2.5 % per °C temperature increase.
If the switch mode power supply is loaded with an output current > 20 A, the operating point is
passing through the U/I characteristic curve shown.
Temperature behaviour
-40 55 70
10
20
30
40
50
60
70
80
90
100
Pout [%]
Ta [°C]
2CDC 272 018 F0211
Characteristic curve of temperature at rated load
Type CP-E 24/20.0
conducted disturbances, induced
by radio‑frequency fields IEC/EN 61000‑4‑6 Level 3 (10 V)
power frequency magnetic fields IEC/EN 61000‑4‑8 Level 4 (30 A/m)
voltage dips, short interruptions
and voltage variations IEC/EN 61000‑4‑11 dip: >95 % 10 ms / >30 % 500 ms
interruptions: >95 % 5000 ms
Interference emission IEC/EN 61000‑6‑3
high‑frequency radiated IEC/CISPR 22, EN 55022 Class B
high‑frequency conducted IEC/CISPR 22, EN 55022 Class B
limits for harmonic current
emissions IEC/EN 61000‑3‑2 Class D
7
ABB
Power supply CP-E 24/20.0
Primary switch mode power supply
Data sheet
Dimensions
in mm
CP-E 24/20.0
Dimensions accessories
in mm
144,5 [5.69”] 60,0 [2.36”]
137,0 [5.39”]
130,0 [5.12”]
130,0 [5.12”]
56,5 [2.22”]
93,5 [3.68”]
90,0 [3.54”]
203,5 [8.01”]
200,0 [7.87”]
135,5 [5.33”]
130,0 [5.12”]
2CDC 272 015 F0b07
144,5 [5.69”] 60,0 [2.36”]
137,0 [5.39”]
130,0 [5.12”]
130,0 [5.12”]
56,5 [2.22”]
93,5 [3.68”]
90,0 [3.54”]
203,5 [8.01”]
200,0 [7.87”]
135,5 [5.33”]
130,0 [5.12”]
2CDC 272 015 F0b07
CP-A RU
Further Documentation
Document title Document type Document number
Electronic Products and Relays Technical catalogue 2CDC 110 004 C020x
Power Supply Units Application manual 2CDC 114 048 M020x
Redundancy unit CP‑A RU Data sheet 2CDC 114 036 D0202
You can find the documentation on the internet at www.abb.com/lowvoltage R Control Products R Power Supplies
175,0 [6.89“]
123,6 [4.87“]
116,6 [4.59“]
123,6 [4.87“]
2CDC 272 004 F0b08
As part of the on‑going product improvement, ABB reserves
the right to modify the characteristics of the products
described in this document. The information given is
non‑contractual.
For further details please contact (www.abb.com/contacts)
the ABB company marketing these products in your country.
Document number: 2CDC 114 062 D0201 (02/2012)
ABB
ABB STOTZ-KONTAKT GmbH
Eppelheimer Strasse 82, 69123 Heidelberg, Germany
Postfach 10 16 80, 69006 Heidelberg, Germany
Internet http://www.abb.com/lowvoltage R Control Products
Contact: http://www.abb.com/contacts R Low Voltage Products and Systems
