PULS CP20.481 Power Supply 1-Phase Installation Guide

: June 12, 2024
: PULS

Table of Contents

Product Description
Intended Use
Installation Instructions
Installation Instructions for Hazardous Location Areas
Functional Description
Technical data
Functional diagram
Output characteristic
Temperature range
Customer Service
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PULS CP20.481 Power Supply 1-Phase Installation Guide

PULS CP20.481 Power Supply 1-Phase Installation Guide

Read this first!

Before operating this device please read this manual thoroughly and retain this manual for future reference! This device may only be installed and put into operation by qualified personnel. If damage or malfunction should occur during operation, immediately turn power off and send device to the factory for inspection. The device does not contain serviceable parts. The information presented in this document is believed to be accurate and reliable and may change without notice. For any clarifications the English translation will be used.

Risk of electrical shock, fire, personal injury, or death:

Turn power off before working on the device. Protect against inadvertent re-powering.
Do not open, modify or repair the device.
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 surfaces may cause burns.

Product Description

The CP20.481 is a DIN-rail mountable single-phase-input power supply, which provides a floating, stabilized and galvanically separated SELV/PELV output voltage.

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. If this device is used in a manner outside of its specification, the protection provided by the device may be impaired.

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. Use ferrules for wires on the input terminals. 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 housing does not provide protection against spilled liquids.
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 or IT mains networks. The continuous voltage between the input terminals and the PE potential must not exceed 300Vac.
The input can also be powered from a battery or a similar DC source. The continuous voltage between the supply voltage and the PE/ground potential must not exceed 375Vdc.
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 5000m. Above 2000m a reduction in output current and over voltage category is required.
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. 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 T4 locations and for use in Group II Category 3 (Zone 2) environments.
Classification: ATEX: EPS 17 ATEX 1 089 X, II 3G Ex ec nC IIC T4 Gc / IECEx EPS 17.0046X
WARNING EXPLOSION HAZARDS!
Do not use with DC input voltages. Do not use with AC input voltages below 90Vac.
Use only in standard vertical mounting orientation with the input terminals on bottom of the unit.
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 and capacitive loads. If capacitors with a capacitance >0.25F 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 63V.
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 26V), 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 16A or 20A 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 60V. The output shuts down and performs three restart attempts. If the failure continues, the output shuts down. Cycle input power to reset.

Technical data

All values are typical figures specified at 230Vac 50Hz input voltage, 48V 10A output load, 25°C ambient temperature and after a 5 minutes run-in time unless otherwise noted.

Output voltage
Adjustment range
Output current| DC48V
48- 56Vdc
12.0-10.3A
10.0 – 8.6A
7.5 – 6.5A| Nominal
Factory setting 48.0V
Below +45°C ambient
At +60°C ambient
At + 70°C ambient
---|---|---
Derate linearly between +45°C and+ 70°C
Input voltage AC
Mains frequency
Input current AC
Power factor| AC 100 – 240V
50- 60Hz
4.26 I 2.23A
0.99 I 0.98| -15%/+10°/o
±6°/o
At 120 / 230Vac
At 120 / 230Vac
Input voltage DC
Input current DC| DC 110 – 150V
4.64A| ±20o/o
At110Vdc
Input inrush current| 10 / 4.5A pk| At 120 / 230Vac
Efficiency
Power losses| 95.0 I 96.3°/o
25.1/18.4W| At 120 / 230Vac
At 120 / 230Vac
Hold-up time| 32 I 32ms| At 120 / 230Vac
Temperature range| -25 to +70°C
Max. wire size (litz wire)
Wire size AWG
Max. wire diameter
Wire stripping length
Tightening torque| 4mm2
AWG 20-10
2.8mm
7mm
1Nm| Power terminals
Power terminals
Power terminals
Power terminals
Power terminals
Max. wire size {litz wire)
Wire size AWG
Max. wire diameter
Wire stripping length| 1.5mm2
24-16
1.6 mm
7mm| Signal terminals
Signal terminals
Signal terminals
Signal terminals
Size (wxhxd)
Weight| 48x124x127mm
830g| Without DIN-rail