EUCHNER CET3-AR Series User Manual

Subject to technical modifications, no responsibility is accepted for the accuracy of this information. © EUCHNER 2016
AP000152-05_03/16 Page 1 of 10
Connection of serial wired CET3-AR to Safety Relay PNOZ s5
Content
Guard locking spring applied − power on released according to EN ISO 14119 (closed-circuit current principle) ........ 2
Components/modules used ................................................................................................................................. 2
EUCHNER ..................................................................................................................................................... 2
Other ............................................................................................................................................................ 2
Functional description ......................................................................................................................................... 3
General ......................................................................................................................................................... 3
Connections .................................................................................................................................................. 3
Safety assessment ............................................................................................................................................. 4
Principle circuit diagram ...................................................................................................................................... 5
AR safety switches connected in series ................................................................................................................ 7
Usage of the Reset input ................................................................................................................................ 7
Teaching in actuators ..................................................................................................................................... 7
Setting of the operating mode selector switch “mode” ........................................................................................... 8
Automatic, manual start – without short circuit detection .................................................................................. 8
Monitored start rising edge – without short circuit detection ............................................................................. 8
Monitored start falling edge – without short circuit detection ............................................................................. 8
Setting of the Reset for PNOZ s5 ......................................................................................................................... 9
Manual Reset................................................................................................................................................. 9
Automatic Reset ............................................................................................................................................ 9
Important note – please observe carefully! .......................................................................................................... 10

EUCHNER CET3-AR Series Specifications

General

Protection Rating	IP67
Housing Material	Plastic
Number of Switching Contacts Auxiliary	Up to 1
Rated Insulation Voltage	250 V
Series	CET3
Operating Temperature	-25°C to +70°C
Voltage Rating	24V DC / 230V AC
Connection Type	Cable
Number of Switching Contacts Safety-Related	1
Electrical Life	1 x 10^5 operations

Summary

Guard Locking Principle EN ISO 14119

Safety Function

Defines the safety function of guard locking for personal protection per EN ISO 14119.

Reliability Figures EN ISO 13849

Lists reliability figures for safety function according to EN ISO 13849.

Components and Modules Used

EUCHNER Components

Lists EUCHNER components used, including safety switches and their order numbers.

Other Components

Lists other components used, specifically the Safety relay PNOZ s5.

Functional Description

General Overview

Provides a general overview of the CET3 guard locking device and its principle.

Device Connections

Details the designation, function, and use of connections for the CET3-AR device.

Safety Assessment

Principle Circuit Diagram

Series Connection of AR Safety Switches

Reset Input Usage

Explains how to use the Reset input for synchronizing switches in a series connection.

Actuator Teaching Procedure

Details the procedure for teaching-in actuators, with and without a teach-in input.

Operating Mode Selector Switch Settings

Automatic/Manual Start (No Short Circuit)

Configures the operating mode for automatic/manual start without short circuit detection.

Monitored Start Rising Edge (No Short Circuit)

Configures monitored start with rising edge, without short circuit detection.

Monitored Start Falling Edge (No Short Circuit)

Configures monitored start with falling edge, without short circuit detection.

PNOZ s5 Reset Configuration

Manual Reset Setup

Details the switch settings for manual reset on the PNOZ s5 safety relay.

Automatic Reset Setup

Details the switch settings for automatic reset on the PNOZ s5 safety relay.

Important Notes and Disclaimer

Brand and Company Name Usage

Clarifies the use of brand names for identification of compatible peripheral devices.