KEYENCE SL-U2 User Manual

96M0932

Safety Light Curtain

Power Supply Unit

SL-U2

Instruction Manual

The SL-U2 is a dedicated power supply unit designed for use with the Safety Light Curtain SL-C Series. The SL-U2 can be mounted on a DIN rail.

This Instruction Manual includes explanations of how to handle the SL-U2 power supply unit as well as important cautionary information. Please read it thoroughly before you use the SL-U2 power supply unit in order to take full advantage of the unit’s performance and store it so that it is easily accessible.

Finally, please see that this manual reaches the person or people who will be operating the power supply.

See the SL-C Series Instruction Manual for detailed information about the SL-C Series.

For safe usage

This manual’s format

This manual uses the following headings to make important sections easy to notice and understand. Always read these sections.

CAUTION

Failure to follow the instructions noted under this heading may result in damage to the product.

When using this device under the following conditions or operating environments, please consult with your KEYENCE sales representative in addition to implementing safety measures such as product operation that allows leeway with respect to features and use of failsafe provisions.

•Use of the product under conditions not described in SL-C Series instruction manual.

•Use of the product in applications involving nuclear power control, railroad facilities, aviation facilities, vehicles, fuel devices, medical equipment, and entertainment machinery.

•Use of the product in applications that may have a significant impact on human life or property, or that place a high priority on safety.

*Contact one of the Sales Offices listed on the back of this manual concerning Instruction Manuals.

General precautions

•Verify that this device is operating normally in terms of functionality and performance before the start of work and when operating the device.

•Implement safety measures as necessary to protect against possible damage that may result in the event that this product fails.

•Proceed with care when modifying the SL-U2, or when using it in a manner that falls outside of the ranges indicated in its specifications, since KEYENCE is unable to guarantee device functionality or performance in such situations.

•Use this product in combination with other devices only after careful consideration, since the SL-U2 may fail to satisfy its functionality and performance capabilities as a result of the conditions and environment in which it is used.

External dimensions

Installation

The SL-U2’s external dimensions are as indicated below.

Units: mm

		35	3.5
	2-ø4.2	11
			(96.6)
		24
			25.8
			35.9
		100	111
		11

The SL-U2 is installed to the left of the SL-R11 or SL-R12EX.

The connector is covered with a seal to protect it, so remove the seal before making the connection.

The connection methods are as follows.
[1] When mounting on a DIN rail	3.	Slide one of the units to connect them both together.
1. Refer to the figure above, and peel off the power	4.	Slide the SL-U2 connection hooks to fasten the
supply connector seal.		units together.

2.Mount both the SL-R11 (SL-R12EX) and SL-U2 to the DIN rail.

* Install while being careful of the connectors

[2] When mounting on the wall with screws

1.Refer to the figure above, and peel off the power supply connector seal.

2.Refer to the figure above, and connect the two units.

3.Slide the SL-U2 connection hooks to fasten the units together.

4.Use M4 screws tightened to a torque of 0.7 N•m to mount both of the units to the wall.

Part names

Wiring

SL-U2 part names are as indicated below.

How to connect wires

Lock button

Read the following precautions before connecting any

wires to the unit. Follow these tips when wiring the unit.

SL-U2

SL-U2

(1) Twisting cables will decrease the effects of

Output indicator

OC

OC

induction.

Terminal block cover

(2) Introducing a 1:1 isolation transformer or noise filter

+

+

into the line will decrease power line noise.

(3) Make wire lengths as short as possible. Separate

-

DC 24 V output terminal

wires from power lines and signal lines that contain

CAUTION AC 240V-100 ONLY

L

-

noise.

PE terminal

D type ground

N

CAUTION AC240V-100 ONLY

L

AC100–240V

(2)(3)

(1)

terminal

Power supply input

N

10%

AC 100 V - 240 V

Isolation transformer,

Lock button

noise filter, etc.

*LED indicator patterns are as follows:

LED No. 1

2 3 4 5 6

*Tightening torque: 5.1 lb-in

LED No. 1 Green ON during voltage output

Wire Rating: AWG #22 - 14,

stranded

wire only,

OC

LED No. 2 Green Output current at least 30%

Copper wire only, 60˚C or higher

LED No. 3 Green Output current at least 50%

LED No. 4 Green Output current at least 60%

LED No. 5 Green Output current at least 70%

LED No. 6 Red

Overcurrent detected

When the yellow LED No. 5 is on, the current being used is approaching

the power supply’s capacity. Consider the use of an additional power

supply.

WARRANTIES AND DISCLAIMERS

Specifications

(1) KEYENCE warrants the Products to be free of defects in

(4)

OTHER

THAN

AS

STATED

HEREIN,

THE

materials and workmanship for a period of one (1) year from the

PRODUCTS/SAMPLES ARE PROVIDED WITH NO OTHER

date of shipment. If any models or samples were shown to

WARRANTIES WHATSOEVER. ALL EXPRESS, IMPLIED, AND

Model

SL-U2

Buyer, such models or samples were used merely to illustrate the

STATUTORY

WARRANTIES,

INCLUDING,

WITHOUT

System

Switching type

general type and quality of the Products and not to represent that

LIMITATION, THE WARRANTIES OF MERCHANTABILITY,

the Products would necessarily conform to said models or

FITNESS FOR A PARTICULAR PURPOSE, AND NON-

Input power supply voltage

AC100 to 240V 10% (50/60Hz)

samples. Any Products found to be defective must be shipped to

INFRINGEMENT OF PROPRIETARY RIGHTS, ARE EXPRESSLY

KEYENCE with all shipping costs paid by Buyer or offered to

DISCLAIMED.

IN NO

EVENT

SHALL KEYENCE AND

ITS

Overvoltage category

KEYENCE for inspection and examination. Upon examination by

AFFILIATED ENTITIES

BE

LIABLE TO

ANY

PERSON

OR

KEYENCE, KEYENCE, at its sole option, will refund the purchase

ENTITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE,

Output voltage

DC24V 10%, Class2

price of, or repair or replace at no charge any Products found to

SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING,

be defective.

This warranty does not apply to any defects

WITHOUT LIMITATION, ANY DAMAGES RESULTING FROM

Ripple/noise

240 mVp-p or less

resulting from any action of Buyer, including but not limited to

LOSS OF USE, BUSINESS INTERRUPTION, LOSS OF

improper installation, improper interfacing, improper repair,

INFORMATION, LOSS OR INACCURACY OF DATA, LOSS OF

Output capacity

1.8 A

unauthorized modification, misapplication and mishandling, such

PROFITS, LOSS OF SAVINGS, THE COST OF PROCUREMENT

Ambient temperature

-10 to +55˚C (no freezing)

as exposure

to excessive current, heat, coldness,

moisture,

OF SUBSTITUTED GOODS, SERVICES OR TECHNOLOGIES, OR

Environment

vibration or outdoors air. Components which wear are not

FOR ANY MATTER ARISING OUT OF OR IN CONNECTION

Ambient humidity

35 to 85% RH (no condensation)

warranted.

WITH THE USE OR INABILITY TO USE THE PRODUCTS, EVEN

(2) KEYENCE is pleased to offer suggestions on the use of its

IF KEYENCE OR ONE OF ITS AFFILIATED ENTITIES WAS

Pollution Degree

2

various Products. They are only suggestions, and it is Buyer’s

ADVISED OF A POSSIBLE THIRD PARTY’S CLAIM FOR

responsibility to ascertain the fitness of the Products for Buyer’s

DAMEGES OR ANY OTHER CLAIM AGAINST BUYER. In some

Withstand voltage

AC 1,500 V, 1 min. (between all external terminals and case)

intended use. KEYENCE will not be responsible for any damages

jurisdictions, some of the foregoing warranty disclaimers or

Vibration resistance

10 to 55 Hz, 0.7 mm compound amplitude, 20 sweeps each in X, Y, and Z directions

that may result from the use of the Products.

damage limitations may not apply.

(3) The Products and any samples (“Products/Samples”)

Shock resistance

100 m/s2 (about 10 G), 16 ms pulse, 1,000 iterations each in X, Y, and Z directions

supplied to Buyer are not to be used internally in humans, for

human transportation, as safety devices or fail-safe systems,

Insulation resistance

At least 50 MΩ

(DC 500 V mega, between all external terminals and case)

unless their written specifications state otherwise. Should any

Products/Samples be used in such a manner or misused in any

Power consumption

135VA

way, KEYENCE assumes no responsibility, and additionally Buyer

Instantaneous stop time

10 ms or less

will indemnify KEYENCE and hold KEYENCE harmless from any

liability or damage whatsoever arising out of any misuse of the

Weight (excluding dedicated brackets)

About 240 g

Products/Samples.

EMC

EN61000-6-2, EN55011 Class A, FCC Part15B Class A

Approved

Standard

Safety

EN60950, EN50178, UL60950, UL508

CAUTION

•Turn the power supply off before making any wire connections.

•Install the unit in a location that is not exposed to direct sunlight and that is characterized by an ambient temperature of -10 to +55˚C and by an ambient humidity of 35 to 85% RH. Avoid installation in locations prone to rapid temperature changes.

•Always connect the protective conductor terminal to the protective earthing line in your building or other facility.

•Use the power supply unit only inside a control board.

•Use the following crimp terminals, which are compatible with M4 terminal screws.

Max. 6.0 mm

Max. 6.0 mm

Copyright (c) 2002 KEYENCE CORPORATION. All rights reserved. 0932E 1094-3 96M0392

Printed in Japan