PZE X4 } Safety relays Operating Manual 1003199-EN-09
Preface This document is a translation of the original document. All rights to this documentation are reserved by Pilz GmbH & Co. KG. Copies may be made for internal purposes. Suggestions and comments for improving this documentation will be gratefully received. Pilz®, PIT®, PMI®, PNOZ®, Primo®, PSEN®, PSS®, PVIS®, SafetyBUS p®, SafetyEYE®, SafetyNET p®, the spirit of safety® are registered and protected trademarks of Pilz GmbH & Co. KG in some countries.
Contents Introduction Validity of documentation Using the documentation Definition of symbols 4 4 4 4 Safety Intended use Safety regulations Safety assessment Use of qualified personnel Warranty and liability Disposal For your safety 5 5 5 5 5 6 6 6 Unit features 7 Safety features 7 Block diagram/terminal configuration 7 Function description 8 Installation 8 Wiring 8 Preparing for operation 9 Operation Status indicators 9 9 Faults – Interference 10 Dimensions in mm 10 Technical deta
PZE X4 Introduction Validity of documentation This documentation is valid for the product PZE X4. It is valid until new documentation is published. This operating manual explains the function and operation, describes the installation and provides guidelines on how to connect the product. Using the documentation This document is intended for instruction. Only install and commission the product if you have read and understood this document. The document should be retained for future reference.
PZE X4 INFORMATION This gives advice on applications and provides information on special features. Safety Intended use The contact expansion module PZE X4 meets the requirements of EN 60947-5-1, EN 60204-1 and VDE 0113-1. It is used to increase the number of instantaneous safety contacts available on a base unit. Base units are all safety relays with feedback loop monitoring. The max. achievable safety level depends on the base unit. The expansion module may not exceed this.
PZE X4 A competent person is someone who, because of their training, experience and current professional activity, has the specialist knowledge required to test, assess and operate the work equipment, devices, systems, plant and machinery in accordance with the general standards and guidelines for safety technology.
PZE X4 Unit features } Positive-guided relay outputs: – } 4 safety contacts (N/O), instantaneous LED display for: – Switch status of the safety contacts } Connection for feedback loop } Operation: single-channel Safety features The unit meets the following safety requirements: } The contact expander module expands an existing circuit. As the output relays are monitored via the base unit's feedback loop, the safety functions on the existing circuit are transferred to the contact expander module.
PZE X4 Function description The contact expansion module is an add-on device without delay-on de-energisation, and it is used to expand a safety circuit. The contact expansion module is driven by a base unit (e. g. emergency stop relay). } } Functional procedure once the input circuit is closed (e.g. safety contacts on the base unit are closed): – The supply voltage is present at input (A1) of the contact expansion module. – The safety contacts 13-14, 23-24, 33-34 and 43-44 close. – The LEDs "CH.
PZE X4 } The power supply must comply with the regulations for extra low voltages with protective electrical separation (SELV, PELV) in accordance with VDE 0100, Part 410.
PZE X4 CH.1 Safety contacts of channel 1 are closed. CH.2 Safety contacts of channel 2 are closed. Faults – Interference By closing or interrupting the input circuit you can check whether the unit switches on or off correctly. For safety reasons, the unit cannot be started if the following faults are present: } Contact malfunction: As the contact block is connected to a base unit, reactivation will not be possible if the contacts have welded after the input circuit has opened.
PZE X4 Technical details General Approvals Electrical data Supply voltage Voltage Kind Voltage tolerance Output of external power supply (DC) Residual ripple DC Duty cycle Max. inrush current impulse Current pulse, A1 Pulse duration, A1 Inputs Number Voltage at Input circuit DC Current at Input circuit DC Max. overall cable resistance Rlmax Single-channel at UB DC Relay outputs Number of output contacts Safety contacts (N/O), instantaneous Max.
PZE X4 Relay outputs Utilisation category in accordance with UL Voltage With current Voltage With current Pilot Duty External contact fuse protection, safety contacts In accordance with the standard Max. melting integral Blow-out fuse, quick Blow-out fuse, slow Blow-out fuse, gG Circuit breaker 24V AC/DC, characteristic B/C Contact material Conventional thermal current while loading several contacts Ith per contact at UB DC AC1: 240 V, DC1: 24 V Conv. therm. current with 1 contact Conv. therm.
PZE X4 Environmental data Airgap creepage In accordance with the standard Overvoltage category Pollution degree Rated insulation voltage Rated impulse withstand voltage Protection type Mounting area (e.g.
PZE X4 Safety characteristic data NOTICE You must comply with the safety-related characteristic data in order to achieve the required safety level for your plant/machine. Operating mode – EN ISO 13849-1: 2008 EN ISO 13849-1: 2008 PL PL e Category Cat.
PZE X4 Service life graph Cycles x 1000 The service life graphs indicate the number of cycles from which failures due to wear must be expected. The wear is mainly caused by the electrical load; the mechanical load is negligible. Switching current (A) Cycles x 1000 Fig.: Service life graphs at 24 V DC and 230 V AC Switching current (A) Fig.
PZE X4 Example } Inductive load: 0.2 A } Utilisation category: AC15 } Contact service life: 2 000 000 cycles Provided the application to be implemented requires fewer than 2 000 000 cycles, the PFH value (see Technical details [ 11]) can be used in the calculation. To increase the service life, sufficient spark suppression must be provided on all output contacts. With capacitive loads, any power surges that occur must be noted. With DC contactors, use flywheel diodes for spark suppression.
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