Instructions

EN
CP20.241, CP20.241-C1 Installation Manual
Product Description
The CP20.241 is a DIN-rail mountable single-phase-input power supply, which provides a floating,
stabilized and galvanically separated SELV/PELV output voltage.
The CP20.241-C1 device is the same as the CP20.241 but with conformal coated pc-boards.
Intended Use
This device is designed for installation in an enclosure and is intended for commercial use, such as in
industrial control, process control, monitoring and measurement equipment or the like. Do not use this
device in equipment where malfunction may cause severe personal injury or threaten human life.
Installation Instructions
Install the device in an enclosure providing protection against electrical, mechanical and fire hazards.
Install the device onto a DIN-rail according to EN 60715 with the input terminals on the bottom of the
device. Other mounting orientations require a reduction in output current.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper
cables that are designed for a minimum operating temperature of 60°C for ambient temperatures up to
+45°C, 75°C for ambient temperatures up to +60°C and 90°C for ambient temperatures up to +70°C.
Ensure that all strands of a stranded wire enter the terminal connection.
Unused screw terminals should be securely tightened.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or
frost is allowed.
The enclosure of the device provides a degree of protection of IP20.
The isolation of the device is designed to withstand impulse voltages of overvoltage category III
according to IEC 60664-1.
The device is designed as “Class of Protection I” equipment according to IEC 61140.
Do not use without a proper PE (Protective Earth) connection.
The device is suitable to be supplied from TN-, TT- and IT mains networks. The voltage between the L
or N terminal and the PE terminal must not exceed 300Vac continuously.
The input can also be powered from batteries or similar DC sources. The voltage between the input
terminal and the PE terminal must not exceed 375Vdc continuously.
A disconnecting means shall be provided for the input of the device.
The device is designed for convection cooling and does not require an external fan. Do not obstruct
airflow and do not cover ventilation grid!
The device is designed for altitudes up to 6000m (19685ft). See additional requirements in the product
datasheet for use above 2000m (6560ft).
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and
right side. Increase the 5mm to 15mm in case the adjacent device is a heat source. When the device
is permanently loaded with less than 50%, the 5mm can be reduced to zero.
The device is designed, tested and approved for branch circuits up to 32A (IEC) and 30A (UL) without
additional protection device. If an external fuse is utilized, do not use circuit breakers smaller than 10A
B- or C-Characteristic to avoid a nuisance tripping of the circuit breaker.
The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the
same as the ambient or surrounding air temperature and is defined 2cm below the device.
The device is designed to operate in areas between 5% and 95% relative humidity.
Installation Instructions for Hazardous Location Areas
The device 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.
Hazardous Location Classification: ATEX: EPS 17 ATEX 1 089 X, II 3G EX ec nC IIC T4 Gc
WARNING EXPLOSION HAZARDS!
Substitution of components may impair suitability for this environment.
Do not disconnect the device 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 60079-0.
Functional Description
The output is electronically protected against no-load, overload and short circuit and can supply any
kind of loads, including unlimited inductive loads and capacitive loads. If capacitors with a capacitance
>1F are connected, the unit might charge the capacitor in an intermittent mode.
Do not apply return voltages from the load to the output higher than 35V.
The output voltage can be adjusted with a small flat-blade screwdriver on the front of the unit.
The green DC-OK LED reports an output voltage above 90% of the adjusted voltage of a running
device.
The DC-OK relay monitors the output voltage and the contact is closed when the DC-OK LED is on.
Contact ratings: 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A for resistive loads.
The device is equipped with an over-temperature protection. In case of a high temperature, the output
shuts down and starts automatically again after cooling off.
At heavy overloads (when output voltage falls below 13V), the device delivers continuous output
current for 2s. After this, the output is switched off for 18s before a new start attempt is automatically
performed. This cycle is repeated as long as the overload exists.
Devices can be paralleled to increase the output power. The ambient temperature is not allowed to
exceed 60°C. The output voltage of all devices shall be adjusted to the same value (±100mV) in
“Single Use” mode with the same load conditions on all units, or the units can be left with the factory
settings. After the adjustments, set the unit to “Parallel Use” mode, in order to achieve load sharing.
The “Parallel Use” mode regulates the output voltage in such a manner that the voltage at no load is
approx. 4% higher than at nominal load. Energize all units at the same time. It also might be
necessary to cycle the input power (turn-off for at least five seconds), if the output was in overload or
short circuit. If more than three devices are connected in parallel, a diode, fuse or circuit breaker with a
rating of 30A or 32A is required on each output.
Same devices can be connected in series for higher output voltages. It is allowed to connect as many
devices in series as needed, providing the sum of the output voltage does not exceed 150Vdc.
In case of an internal defect, a redundant circuit limits the maximum output voltage to 32V. The output
shuts down and automatically attempts to restart.
Technical data
All values are typical figures specified at 230Vac 50Hz input voltage, 24V
20A output load, 25°C ambient temperature and after a 5 minutes run-in
time unless otherwise noted.
Output voltage DC 24V Nominal
Adjustment range 24 – 28Vdc Factory setting 24.1V
Output current 24.0 – 20.6A Below +45°C ambient
20.0 – 17.1A At +60°C ambient
15.0 – 13.0A At +70°C ambient
Derate linearely between +45°C and +70°C
Input voltage AC AC 100 - 240V -15%/+10%
Mains frequency 50 – 60Hz ±6%
Input current AC 4.26 / 2.23A At 120 / 230Vac
Power factor 0.99 / 0.98 At 120 / 230Vac
Input voltage DC DC 110 - 150V ±20%
Input current DC 4.64A At 110Vdc
Input inrush current 10 / 4.5A pk At 120 / 230Vac
Efficiency 94.2 / 95.6% At 120 / 230Vac
Power losses 29.6 / 22.1W At 120 / 230Vac
Hold-up time 32ms
Temperature range -25 to +70°C
Max. wire size (litz wire) 4mm² Power terminals
Wire size AWG AWG 20-10 Power terminals
Max. wire diameter 2.8mm Power terminals
Wire stripping length 7mm / 0.28inch Power terminals
Tightening torque 1Nm / 9lb.inch Power terminals
Max. wire size (litz wire) 1.5mm² Signal terminals
Wire size AWG AWG 24-16 Signal terminals
Max. wire diameter 1.6 mm Signal terminals
Wire stripping length 7mm / 0.28inch Signal terminals
Size (wxhxd) 48x124x127mm Without DIN-rail
Weight 830g / 1.83lb
Functional diagram
+
+
-
-
Output
Over-
Voltage
Protection
PFC
Converter
Power
Converter
Output
Filter
Output
Power
Manager
Temper-
ature
Shut-
down
Input Fuse
Input Filter
Input Rectifier
Inrush Current
Limiter
L
N
-
13
14
Output
Voltage
Regulator
Output
Voltage
Monitor
V
OUT
DC-ok
Contact
DC-ok
LED
DC-ok
Relay
Link for
Parallel
Use
Output characteristic
Output voltage (single use)
35A
24V
Output current
12V
0V
5A 15A 20A 25A0A
Adjustment range
28V
10A
A: continuous current
B: intermitted current
30A
A
B
Temperature range
Allowed output current at 24V
Ambient temperature
0A
-25
A: continuous
B: short term (max. 5s)
24A
+250 +45 +70°C
15A
A
B
20A
+60