RF1V Force Guided Relays/ SF1V Relay Sockets

(4)

(3)

K3

K1

KM1

M

S2

RF1V force guided contacts

L (–)

0V

F3 to F5

K2

KM2

KM1

KM2

K1

K3

K2

F2

Safety guard open

12

HS6B

Subminiature Interlock Switch

S1

4

3

F1

L(+)

24V DC

(1)

(2)

(5)

S1:

HS6B subminiature

interlock switch

S2:

Start switch

Start

switch

(S2)

ON

→OFF

K3:

Force guided

contacts

Safety

guard

open

Safety

guard

closed

K1, K2: Force guided

contacts

Safety contactor output

(KM1, KM2)

S1:

HS6B subminiature interlock switch

S2:

Start switch (HW series momentary type)

K1, K2, K3: RF1V force guided relays

KM1, KM2: Safety contactor

M:

Motor

F1:

Protection fuse for safety circuit

F2:

Protection fuse for mechanical contact

output of force guided relay contact

F3 to F5:

Protection fuse for mechanical contact

output of safety contactors

Control circuits conforming with safety categories 2, 3, and 4 can be constructed.

The circuit example below consisting of interlock

switches, force guided relays, and safety contactors are

only a part of a safety-related system in a machine. In

actual machines, risk assessment must be performed

taking various aspects into consideration such as

hazard types, safeguarding measures, and change of

hazard level in operating mode, in order to reduce the

risk of the entire machine to a tolerable level. The safety

category of a machine needs to be evaluated for the

entire safety-related system.

Time Chart

•

Safety category 4 control circuits

•

IDEC CORPORATION (USA)

1175 Elko Drive, Sunnyvale, CA 94089-2209, USA

Tel: +1-408-747-0550 / (800) 262-IDEC (4332)

Fax: +1-408-744-9055 / (800) 635-6246

E-mail: opencontact@idec.com

IDEC CANADA LIMITED

3155 Pepper Mill Court, Unit 4, Mississauga,

Ontario, L5L 4X7, Canada

Tel: +1-905-890-8561, Toll Free: (888) 317-4332

Fax: +1-905-890-8562

E-mail: sales@ca.idec.com

IDEC AUSTRALIA PTY. LTD.

2/3 Macro Court, Rowville, Victoria 3178, Australia

Tel: +61-3-9763-3244, Toll Free: 1800-68-4332

Fax: +61-3-9763-3255

E-mail: sales@au.idec.com

IDEC ELECTRONICS LIMITED

Unit 2, Beechwood, Chineham Business Park,

Basingstoke, Hampshire RG24 8WA, UK

Tel: +44-1256-321000, Fax: +44-1256-327755

E-mail: sales@uk.idec.com

7-31, Nishi-Miyahara 1-Chome, Yodogawa-ku, Osaka 532-8550, Japan

Tel: +81-6-6398-2571, Fax: +81-6-6392-9731

E-mail: marketing@idec.co.jp

Specifications and other descriptions in this catalog are subject to change without notice.

Cat. No. EP1260-0 MARCH 2009 8.2T PRINTED IN JAPAN

IDEC ELEKTROTECHNIK GmbH

Wendenstrasse 331, 20537 Hamburg, Germany

Tel: +49-40-25 30 54 - 0, Fax: +49-40-25 30 54 - 24

E-mail: service@idec.de

IDEC (SHANGHAI) CORPORATION

Room 608-609, 6F, Gangtai Plaza, No. 700,

Yan'an East Road, Shanghai 200001, PRC

Tel: +86-21-5353-1000, Fax: +86-21-5353-1263

E-mail: idec@cn.idec.com

IDEC (BEIJING) CORPORATION

Room 211B, Tower B, The Grand Pacific Building,

8A Guanghua Road, Chaoyang District,

Beijing 100026, PRC

Tel: +86-10-6581-6131, Fax: +86-10-6581-5119

IDEC (SHENZHEN) CORPORATION

Unit AB-3B2, Tian Xiang Building, Tian’an Cyber Park,

Fu Tian District, Shenzhen, Guang Dong 518040, PRC

Tel: +86-755-8356-2977, Fax: +86-755-8356-2944

IDEC IZUMI (H.K.) CO., LTD.

Units 11-15, Level 27, Tower 1,

Millennium City 1, 388 Kwun Tong Road,

Kwun Tong, Kowloon, Hong Kong

Tel: +852-2803-8989, Fax: +852-2565-0171

E-mail: info@hk.idec.com

IDEC TAIWAN CORPORATION

8F-1, No. 79, Hsin Tai Wu Road, Sec. 1,

Hsi-Chih, Taipei County, Taiwan

Tel: +886-2-2698-3929, Fax: +886-2-2698-3931

E-mail: service@tw.idec.com

IDEC IZUMI ASIA PTE. LTD.

No. 31, Tannery Lane #05-01,

HB Centre 2, Singapore 347788

Tel: +65-6746-1155, Fax: +65-6844-5995

E-mail: info@sg.idec.com

www.idec.com

Safety function at occurrence of single faults

•

1. If a short-circuit failure occurs at either of the S1 channels, when

the safety guard is opened, K2 does not turn off but K1 turns off, so

safety function (power interruption to the motor) is maintained. The

system does not restart because the NC contact of K2 remains open

and K3 is not energized even when S2 is turned on.

2. If a short-circuit failure occurs between S1 channels, the potential dif-

ference of K1 and K2 coils become 0V, turning K1 and K2 off. (Fault

detection function between safety input circuits)

3. If NO contact of KM1 is welded, KM2 turns off when the safety guard

is opened, so the safety function (power interruption to the motor)

is maintained. The system does not restart because the NC contact

remains open and K3 is not energized even when S2 is turned on.

4. If the NO contact of K1 is welded, K2 turns off when the safety guard

is opened, so the safety function (power interruption to the motor) is

maintained. The system does not restart because the NC contact of

K1 remains open and K3 is not energized even when S2 is turned on.

5. If NC contact of K3 is welded, K1 and K2 turn off when the safety

guard is opened, so the safety function (power interruption to the

motor) is maintained. Also, the system does not restart because NO

contact of K3 does not shut, therefore K1 and K2 cannot be ener-

gized.

(090319)