2

Force guided contact mechanism

(EN50205 Type A TÜV approved)

Complies with International Standards

Response time of 8 ms.

Ensures safety by turning the load off quickly.

(200 m/s2minimum)

Fast Response Time

High shock resistant suitable for use in machine tools and in

environments subjected to vibration and shocks.

High Shock Resistance

Available with a built-in LED.

Clear Visiblilty

Compact size enables size reduction of PC board.

4-pole type: 13W × 40D × 24H mm

6-pole type: 13W × 50D × 24H mm

Compact and Slim

PC board mount and DIN rail mount sockets are available.

Socket Variation

PC board mount

DIN rail mount

Applications

Output expansion for safety relay modules and safety controllers

Contacts of a force guided relay are forced to open and

close by a guide connected to the armature.

Due to requirements of standard EN50205, a force guided

relay has independent NO and NC contacts. If a NO con-

tact welds, a NC contact will not close even when the relay

coil is turned off (de-energized) and must maintain a gap of

at least 0.5 mm. Furthermore, if a NC contact welds, a NO

contact will not close when the relay is turned on (ener-

gized) and must maintain a gap of at least 0.5 mm.

(General-purpose relays do not have the above characteristics.)

What is a force guided relay?

Relays used in safety circuits to detect failures such as contact welding and damage to the

contact spring.

Circuit Example

•

Circuit Example

•

EDM input: External device monitor input

FS1A Safety Controller

•

HR1S Safety Relay Module

•

Safety Relay Module

Interlock Switch/

Emergency Stop Switch

Start

Switch

K2

K1

F1 F2

EDM Input

Safety Output Expansion

Force Guided Relays

Force Guided Relays

Force guided relays are used in safety circuits in combination with in-

terlock switches, light curtains, and emergency stop switches to control

outputs.

They can also be used to expand outputs for safety relay modules and

safety controllers.

De-energized

(Normal

Condition)

Energized

(Normal

Condition)

A gap of at least

0.5 mm is maintained

NO contact

is welded

De-energized

(Abnormal

Condition)

Energized

(Abnormal

Condition)

A gap of at least

0.5 mm is maintained

NC contact

is welded

Armature

Guide

NC

contact

NO

contact

Armature

Guide

NC

contact

NO

contact

Solid state safety outputs of safety controllers can be converted

to mechanical contact outputs.

Cost effective and easy method to expand mechanical

contact outputs.

K2

K1

24V

Interlock Switch/

Emergency Stop Switch

Start

Switch

Safety Controller

EDM Input

Safety Output Expansion

Force Guided Relays

Force Guided Relays

Guide

NC contact

NO contact

Enables flexible construction of safety circuits

(090319)