KEYENCE CA-U4 User Manual

WARNING

CAUTION

NOTICE

WARNING

CAUTION

NOTICE

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)

20mm min.

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 serious injury.

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

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

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

• UL File No. E195940, E242533

• UL category NMTR, NMTR7 / QQGQ2, QQGQ8

UL60950-1 Information Technology Equipment - Safety CAN/CSA C22.2 No. 14-M95

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

Industrial Control Equipment

Information Technology Equipment - Safety

• Use wires that meet the following conditions for the terminal block. (tightening torque : 1.2 N·m)

• 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.

Wire range AWG#14-22 Wire Material Copper wire only Wire type Stranded wire only Temperature rating 60ºC/75ºC

Part Names and Functions

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 prod uct in a hazard ous locatio n 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.

• 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.

• 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 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

• 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.

EN50178

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

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

in which water, oil, or chemicals may splash onto the unit.

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.

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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Wiring

8.0 mm max. 8.0 mm max.

M4 size M4 size

.3.0.7

Output current display

Load factor display

Peak current display

Output voltage display

Displays the output current down to 0.1 A.

Displays the load factor down to 1%. When the load factor is over 100% , displays "FFP".

Displays the maximum value of the output current down to

0.1 A. The current and "PH" are displayed alternately.

Displays the output voltage down to 0.1 V.

.3.5.P

.3.1.3

.2.4.0

Load factor (%)

100

90 80 70 60 50 40 30 20 10

-100 1020304050 7060

Surrounding air temperature (°C)

The side mounting bracket can be attached to either sides.

When front mounted (Mounting bracket : OP-42174)

When side mounted (Mounting bracket : OP-51629)

14.3

122.5

2.5

16.1

(12)

120

85.5

16.5

15.5

4-M3 Screw insertion depth 5 max.

Screw hole for mounting

170

12.5

122

t=2

12.5

20.575

12.5

157

t=2

When bottom mounted (Mounting bracket : OP-42175)

160

150

5540

132.5

t=2

12.5

4-φ5

43.3

35.9

13023E 1054-1 96M13023 Printed in Japan

Ter mi nals

Screw size Tightening torque

M4 1.2 N·m

Crimp terminals

Cables

Select cables with a wire diameter suited to the output rated current.

Method of Operation

The display mode changes each time when the MODE switch is pressed.

• The CA-U4 is set to the output current display mode before shipment. It retains the display mode that was used before the power was turned off.

• The maximum value for the peak current display mode is cleared when the power is turned off and the display mode is changed.

• When the switch is held down for 3 seconds or more, the current mode is locked and cannot be changed. To unlock the mode, hold down the switch again for 3 seconds or more.

Dimensions

Specificatons

Model CA-U4

Rated Input voltage

Rated Frequency

Input

Input current (100/200 VAC) 2.2 A/1.1 A max.

conditons

Efficiency (100/200 VAC) 82%/85% typ. (with 100% load) Leakage current (100/200 VAC) Rush current (100/200 VAC) 2 5 A/50 A max. (with 100% load, at 25 ºC cold start) Rated output voltage 24V DC

Adjustable voltage range

Rated output current 6.5 A Ripple/noise voltage 180mVp-p max.

Output

Input fluctu ation 0.4 % max.

conditons

Load fluctuation 1 .5 % max. Temperature fluctuation 0.02 %/ºC max.

Starting time

Output holding time

Overcurrent protection

Protection

Overvoltage protection

Display method 3-digit, 7-segmen t LED (Character height: 10 mm)

Display

Memory backup time Approx. 10 years (at 20ºC) Display resolution 0.1 A/0.1 V/1% Surrouding Air Temperature

(for operation) Relative humidity 25 to 85%, No cond ensation Surrounding Air Temperature

(for storage)

Withstand voltage

Environment

Shock

Vibration

Insulation resistance

Safety standard

Applicable standard

EMC standard Limits for harmonic current

emissions

Parallel operation

Serial operation

Other

Cooling method Natural air-cooling Weight Approx. 700g

*1 For conforming to safety standards shown above, rated input voltage is 100 to 240 VAC 50/60 Hz. *2 To reset the unit, turn off the input power once, wait for 1 minute or more, and then turn on the input power again. *3 The Applicab le standards do not apply for parallel and serial operations.

Output Derating Characteristics

100 to 240 VAC (85 to 264 VAC, 110 to 370 VDC)

50/60 Hz (47 to 63 Hz, DC)

0.4 mA/0.75 mA max. (with 100% load)

± 5% (with V.ADJ)

500 ms max. (at Surrounding Air Temperature of 0 to 55ºC under rated I/O conditions)

20 ms min. (at Surrounding Air Temperature of 25ºC under rated I/O conditions) Constant current voltage limiting. Automatic reset

7.9 A min. Activates when the voltage reaches 26.4 V or more. Voltage turn-off.

Operation resumes when the input power is turned on again.

–10 to 55ºC, No condensation (See "Output Derating Characteristics".)

–20 to 70ºC, No condensation

3.0 kVAC 50/60 Hz 1 min (across input and output t erminals),

2.0 kVAC 50/60 Hz 1min (across input terminals and PE terminal) 500 VAC 50/60 Hz 1 min (across output terminals and PE t erminal)

Peak acceleration: 300 m/s2, in X, Y, and Z directions, 2 times respectively In X, Y, and Z directions, 2 hours respectively under the following conditions 10 to 57 Hz, 0.3 mm double-amplitude, 57 to 500 Hz, 19.6 m/s2 (2G), 5.5-minute cycle 100 M min. (with 500 VDC megohmmeter) (across input and output terminals)

(across input termi nals and PE terminal) across output terminal s and PE terminal) UL : UL508, UL60950-1

C-UL : CSA C22.2 No.14-M95, CSA C22.2 No.60950-1-03 EN : EN60950-1, EN50178 IEC : IEC60950-1

FCC Part15B ClassA, EN55011 ClassA, EN61000-6-2

EN61000-3-2

Possible (OP-42207 is required.)

Possible (External diode is required.)

WARRANTIES AND DISCLAIMERS : KEYENCE, at its sole option, will refund, repair or replace at no charge any defective Products within 1 year from the date of shipment. Unless stated otherwise herein, the Products should not be used internally in humans, for human transportation, as safety devices or fail-safe systems. EXCEPT FOR THE FOREGOING, ALL EXPRESS, IMPLIED AND

STATUTORY WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF PROPRIETARY RIGHTS, ARE EXPRESSLY DISCLAIMED. KEYENCE SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL OR OTHER DAMAGES, EVEN IF DAMAGES RESULT FROM THE USE OF THE PRODUCTS IN ACCORDANCE WITH ANY SUGGESTIONS OR INFORMATION PROVIDED BY KEYENCE. In

some jurisdictions, some of the foregoing warranty disclaimers or damage limitations may not apply.

E1101-3

* The characteristic data shown above are obtained when this unit is installed as described in this Manual. * The surrounding air temperature is the temperature 50 mm below the bottom of the unit.

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