KEYENCE CA-U4 User Manual

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KEYENCE CA-U4 User Manual

96M13023

Compact Switching Power Supply

CA-U4

Instruction Manual

Read this manual before using the product in order to achieve maximum performance. Keep this manual in a safe place after reading it so that it can be used at any time.

Introduction

Symbol Guide

The following symbols are used to show potentially hazardous situations or to provide extra information. Be sure to read this section carefully.

 

 

 

It indicates a hazardous situation which, if not avoided, could result in death or

 

WARNING

 

 

 

serious injury.

 

 

 

 

 

 

 

It indicates a hazardous situation which, if not avoided, could result in minor or

 

CAUTION

 

 

 

moderate injury.

 

 

 

 

 

 

 

 

NOTICE

It indicates a situation which, if not avoided, could result in product damage as

 

well as property damage.

 

 

 

 

Safety Information for CA-U4

 

 

 

Do not use this product for the purpose to protect a human body or part of

 

 

 

 

a human body.

 

 

 

This product is not intended for use as an explosion-proof product. Do not

 

 

 

 

use this product in a hazardous location and/or potentially explosive

 

 

 

 

atmosphere.

 

 

 

• Do not perform any electrical wiring while electric current is applied.

 

 

 

 

Failure to follow this may result in an electric shock or fire.

 

WARNING

 

Be sure to connect the grounding cable. Failure to follow this may result

 

 

 

 

in an electric shock or fire.

 

 

 

Do not touch this unit within 1 minute after AC input is turned off. Failure

 

 

 

 

to follow this may result in an electric shock.

 

 

 

Do not modify or repair this unit. Failure to follow this may result in an

 

 

 

 

electric shock, accident, or product failure.

 

 

 

Do not touch any terminal of this unit while electric current is applied. Use

 

 

 

 

the unit with the terminal cover installed to avoid an electric shock.

 

 

 

When this unit is used in a system that may cause a serious accident or

 

 

 

 

damage if the unit fails, be sure to install a safety device.

 

 

 

• Pay attention to prevent foreign matter such as metal particles, dust,

 

 

 

 

paper or wood chips from entering the inside of this unit. Failure to follow

 

 

 

 

this may result in a fire or product failure.

 

CAUTION

 

Do not touch any metallic part while electric current is applied or

 

 

 

 

immediately after input is shut off. Failure to follow this may result in a

 

 

 

 

burn due to a high temperature.

 

 

 

If a failure or abnormality occurs while this unit is in use, immediately turn

 

 

 

 

off AC input and stop operation of this unit . Failure to follow this may

 

 

 

 

result in a fire or accident.

 

 

 

Check that the AC input rated voltage of this unit is equal to the voltage of

 

NOTICE

 

the AC power supply.

 

Do not connect the AC power supply to the DC output terminals.

 

 

 

 

 

 

Do not disturb the convection of air near the vent of the casing.

 

 

 

 

 

Precautions on Regulations and Standards

CE Marking

Keyence Corporation has confirmed that this product complies with the essential requirements of the applicable EC Directives, based on the following specifications. Be sure to consider the following specifications when using this product in the Member States of European Union.

EMC Directive (2004/108/EC)

Applicable standard EMI: EN55011-Group 1, Class A

Applicable standard EMS: EN61000-6-2

Remarks: These specifications do not give any guarantee that the end-product with this product incorporated complies with the essential requirements of EMC Directive. The manufacturer of the end-product is solely responsible for the compliance on the endproduct itself according to EMC Directive.

Low-Voltage Directive (2006/95/EC)

• Applicable standard

EN60950-1

 

 

EN50178

Overvoltage category

II

Pollution degree

2

The CA-U4 is designed as a Class I Equipment. Be sure to connect the protective earthing terminal on the terminal block to the protective earthing conductor in the building installation.

The CA-U4 is an open-type device. Be sure to install it in an appropriate enclosure rated as IP54 or better.

Use the CA-U4 according to the derating conditions and the installation conditions described in this manual.

The CA-U4 does not include a disconnecting device. Be sure to install a disconnecting device such as a circuit breaker in the building installation wiring.

Precautions for UL Standards

The CA-U4 meets the following UL standards and has obtained UL and C-UL certification.

• Applicable standard

UL508

Industrial Control Equipment

 

UL60950-1

Information Technology Equipment - Safety

 

CAN/CSA C22.2 No. 14-M95

 

 

Industrial Control Equipment

 

CAN/CSA C22.2 No. 60950-1-03

• UL File No.

E195940, E242533

Information Technology Equipment - Safety

 

• UL category

NMTR, NMTR7 / QQGQ2, QQGQ8

<Precautions>

• Use wires that meet the following conditions for the terminal block.

(tightening torque : 1.2 N·m)

 

Wire range

AWG#14-22

Wire Material

Copper wire only

Wire type

Stranded wire only

Temperature rating

60ºC/75ºC

The CA-U4 is designed as a Class I Equipment. Be sure to connect the protective earthing terminal on the terminal block to the protective earthing conductor in the building installation.

The CA-U4 is an open-type device. Be sure to install it in an appropriate enclosure rated as IP54 or better.

Use the CA-U4 according to the derating conditions and the installation conditions described in this manual.

The CA-U4 does not include a disconnecting device. Be sure to install a disconnecting device such as a circuit breaker in the building installation wiring.

Part Names and Functions

Digital display window

Displays the current values of output current/voltage and other items.

Display mode selection (MODE)

Switches the display mode.

Output voltage adjustment trimmer (V.ADJ)

Adjusts the output voltage within the range of ±5%.

DC output terminal (+, –)

A load is connected here. (24 VDC)

Protective earthing terminal ()

Connect to the protective earthing conductor in the building installation.

AC input terminal (N, L)

An input cable is connected here. (100 to 240 VAC)

Installation Conditions

Installation environment

Installation this unit indoors.

Do not install this unit in locations exposed to direct sunlight.

Do not install this unit in locations in which there is corrosive gas or flammable gas.

Do not install this unit in locations exposed to a lot of dust, soot, or steam.

Do not install this unit in locations in which water, oil, or chemicals may splash onto the unit.

When installing this unit in a location subject to vibration or impact, consider the vibration proof mounting.

When installing this unit in a control console

The ambient temperature for this unit should not exceed the upper temperature limit (refer to the derating characteristic). When the upper temperature limit may be exceeded, install a cooling fan or cooler so that the ambient temperature is below the upper temperature limit.

Leave a sufficient ventilation space around this unit for head dissipation.

Do not install this unit just above a device with high head generation (transformer, inverter, servo amplifier, etc.).

Installation

Space around the unit

The CA-U4 uses natural air-cooling. To ensure sufficient convection of air to dissipate heat, provide enough space between the CA-U4 and the control panel or other nearby devices as shown below.

 

20mm min.

 

20mm min.

20mm min.

 

20mm min.

 

Installation orientation

 

Install this unit with the base

down as shown below. Do not install the unit in any other

orientation.

 

 

Mounting bracket (optional)

Make sure that the tightening torque for the mounting screw holes of this unit is 0.5 N·m or less.

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