Pilz PST 4 Operating Manual
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Pilz PST 4 Operating Manual

Safety relays
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Operating Manual-18436-EN-06

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  • Page 1 PST 4 Safety relays Operating Manual-18436-EN-06...
  • Page 2 Preface This document is the original document. All rights to this documentation are reserved by Pilz GmbH & Co. KG. Copies may be made for the user's internal purposes. Suggestions and comments for improving this documenta- tion will be gratefully received.

  • Page 3: Table Of Contents

    Function Description Operating modes Timing diagram Installation Wiring Preparing for operation Operation Status indicators Faults – Interference Dimensions in mm Technical details Safety characteristic data Supplementary data Service life graph Order reference EC declaration of conformity Operating Manual PST 4 18436-EN-06...

  • Page 4: Introduction

    PST 4 Introduction Validity of documentation This documentation is valid for the product PST 4. 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.

  • Page 5: Safety

    This gives advice on applications and provides information on special fea- tures. Safety Intended use The safety relay PST 4 provides a safety-related interruption of a safety circuit. The safety relay meets the requirements of EN 60947-5-1, EN 60204-1 and VDE 0113-1 and may be used in applications with Safety gates...

  • Page 6: Use Of Qualified Personnel

    Note for overvoltage category III: If voltages higher than low voltage (>50 VAC or >120 VDC) are present on the unit, connected control elements and sensors must have a rated insulation voltage of at least 250 V. Operating Manual PST 4 18436-EN-06...

  • Page 7: Unit Features

    14 24 34 44 54 02 A2 14 24 34 44 54 64 S33 S34 *Insulation between the non-marked area and the relay contacts: Basic insulation (over- voltage category III), Protective separation (overvoltage category II) Operating Manual PST 4 18436-EN-06...

  • Page 8: Type: Dc

    71-72, 81-82, 91-92 and 01-02 are closed. – The LEDs "CH.1 OUT" and "CH.2 OUT" go out. If the input circuits have already switched before supply voltage is applied, the PST 4 stops the plant being enabled, to prevent an automatic start-up in accordance with EN 60204 Pt 7.5.

  • Page 9: Operating Modes

    PST 4 Operating modes Dual-channel operation with detection of shorts across contacts: Redundant input cir- cuit, PST 4 detects – earth faults in the start and input circuit, – short circuits in the input circuit, – shorts across contacts in the input circuit.

  • Page 10: Wiring

    The power supply must comply with the regulations for extra low voltages with protect- ive electrical separation (SELV, PELV) in accordance with VDE 0100, Part 410. Ensure the wiring and EMC requirements of EN 60204-1 are met. Operating Manual PST 4 18436-EN-06...

  • Page 11: Preparing For Operation

    In the event of an automatic start or manual start with bridged start contact (fault): The unit starts up automatically when the safeguard is reset, e.g. when the E-STOP pushbutton is released. Use external circuit measures to prevent an unexpected restart. Operating Manual PST 4 18436-EN-06...

  • Page 12: Operation

    Open the safety contacts (switch off output) and start the device again, so that the internal diagnostics can check that the safety contacts open correctly for SIL CL 3/PL e at least 1x per month for SIL CL 2/PL d at least 1x per year Operating Manual PST 4 18436-EN-06...
  • Page 13 PST 4 NOTICE The safety function should be checked after initial commissioning and each time the plant/machine is changed. The safety functions may only be checked by qualified personnel. Operating Manual PST 4 18436-EN-06...

  • Page 14: Status Indicators

    LED "POWER" does not light: Short circuit or no supply voltage. CH.1 OUT and CH.2 OUT do not light: Only one limit switch is closed. Simultaneity was not maintained. Dimensions in mm Operating Manual PST 4 18436-EN-06...

  • Page 15: Technical Details

    Dual-channel with detection of shorts across contacts at UB AC – 100 Ohm Relay outputs 720300 720301 Number of output contacts Safety contacts (N/O), instant- aneous Auxiliary contacts (N/C) Max. short circuit current IK 1 kA 1 kA Operating Manual PST 4 18436-EN-06...
  • Page 16 Max. current DC13 (6 cycles/min) at 24 V 24 V Max. current Utilisation category of auxiliary con- tacts AC15 at 230 V 230 V Max. current DC13 (6 cycles/min) at 24 V 24 V Max. current Operating Manual PST 4 18436-EN-06...
  • Page 17 Conv. therm. current with 3 con- tacts 5,7 A 5,7 A Conv. therm. current with 4 con- tacts Conv. therm. current with 5 con- 4,4 A 4,4 A tacts Conv. therm. current with 6 con- tacts Operating Manual PST 4 18436-EN-06...
  • Page 18 Airgap creepage In accordance with the standard EN 60947-1 EN 60947-1 III / II III / II Overvoltage category Pollution degree Rated insulation voltage 400 V 400 V 4 kV 4 kV Rated impulse withstand voltage Operating Manual PST 4 18436-EN-06...
  • Page 19 790 g Where standards are undated, the 2017-01 latest editions shall apply. Order no. 720308 – 720309 General 720308 720309 CCC, CE, EAC (Eurasian), TÜV, CCC, CE, EAC (Eurasian), TÜV, cULus Listed cULus Listed Approvals Operating Manual PST 4 18436-EN-06...
  • Page 20 AC1 at Min. current 0,01 A 0,01 A Max. current Max. power 2000 VA 2000 VA DC1 at 24 V 24 V Min. current 0,01 A 0,01 A Max. current 200 W 200 W Max. power Operating Manual PST 4 18436-EN-06...
  • Page 21 In accordance with the standard EN 60947-5-1 EN 60947-5-1 Max. melting integral 240 A²s 240 A²s Blow-out fuse, quick 10 A 10 A Blow-out fuse, slow 10 A 10 A Blow-out fuse, gG Circuit breaker 24V AC/DC, characteristic B/C Operating Manual PST 4 18436-EN-06...
  • Page 22 100 ms Delay-on de-energisation With E-STOP typ. 30 ms 30 ms 50 ms 50 ms With E-STOP max. Supply interruption before de-ener- gisation 10 ms 10 ms Simultaneity, channel 1 and 2 max. 4 s Operating Manual PST 4 18436-EN-06...
  • Page 23 TWIN crimp con- nectors 0,2 - 2,5 mm², 24 - 14 AWG 0,2 - 2,5 mm², 24 - 14 AWG Torque setting with screw terminals 0,6 Nm 0,6 Nm Operating Manual PST 4 18436-EN-06...
  • Page 24 Mechanical data 720308 720309 Dimensions Height 87 mm 87 mm Width 90 mm 90 mm 121 mm 121 mm Depth 790 g 790 g Weight Where standards are undated, the 2017-01 latest editions shall apply. Operating Manual PST 4 18436-EN-06...

  • Page 25: Safety Characteristic Data

    If the service life graphs are not accessible, the stated PFH value can be used irrespective of the switch frequency and the load, as the PFH value already considers the relay's B10d value as well as the failure rates of the other components. Operating Manual PST 4 18436-EN-06...

  • Page 26: Service Life Graph

    Connection type Order No. PST 4 24 VDC Screw terminals 720 300 PST 4 24 VAC Screw terminals 720 301 PST 4 110 VAC Screw terminals 720 308 PST 4 230 VAC Screw terminals 720 309 Operating Manual PST 4 18436-EN-06...

  • Page 27: Ec Declaration Of Conformity

    European Parliament and of the Council. The complete EC Declaration of Conformity is available on the Internet at www.pilz.com/support/downloads. Representative: Norbert Fröhlich, Pilz GmbH & Co. KG, Felix-Wankel-Str. 2, 73760 Ost- fildern, Germany Operating Manual PST 4...
  • Page 28 Back cover Support Technical support is available from Pilz round the clock. Americas Australia Scandinavia +45 74436332 Brazil +61 3 95600621 +55 11 97569-2804 Spain Canada Europe +34 938497433 +1 888-315-PILZ (315-7459) Austria Switzerland Mexico +43 1 7986263-0 +41 62 88979-30...

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