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Summary of Contents for Pilz PU3Z
- Page 1 PU3Z Safe monitoring relays Operating Manual-19093-EN-07...
- 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.
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Page 3: Table Of Contents
....................Installation ..........................Wiring ............................Preparing for Operation ......................Operation ..........................Status indicators ........................Faults – Interference ......................Dimensions in mm ......................... Technical details ........................Safety characteristic data ......................Supplementary data ......................Service life graph ........................Operating Manual PU3Z 19093-EN-07... - Page 4 Contents Order reference ........................EC declaration of conformity ....................Operating Manual PU3Z 19093-EN-07...
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Page 5: Introduction
PU3Z Introduction Validity of documentation This documentation is valid for the product PU3Z. It is valid until new documentation is pub- lished. This operating manual explains the function and operation, describes the installation and provides guidelines on how to connect the product. -
Page 6: Safety
EN ISO 13849 and EN 62061. However, this does not guarantee the functional safety of the overall plant/machine. To achieve the relevant safety level of the overall plant/ machine’s required safety functions, each safety function needs to be considered separ- ately. Operating Manual PU3Z 19093-EN-07... -
Page 7: Use Of Qualified Personnel
600 V. Unit features Redundant measuring inputs for 3-phase AC circuits Positive-guided relay outputs: – 3 safety contacts (N/O), instantaneous – 1 auxiliary contact (N/C), instantaneous 7 semiconductor outputs LED display for: – Supply voltage Operating Manual PU3Z 19093-EN-07... -
Page 8: Safety Features
The circuit is redundant with built-in self-monitoring. The safety function remains effective in the case of a component failure. The correct opening and closing of the safety function relays is tested automatically in each on-off cycle. Operating Manual PU3Z 19093-EN-07... -
Page 9: Block Diagram/Terminal Configuration
(overvoltage category III), protective separation (overvoltage category II); at 250 V, 4 kV ***Insulation against the non-marked area and between the measurement connections: , L2 , L3 : Basic insulation (overvoltage category III), protective separation (over- voltage category II); at 600 V, 6 kV Operating Manual PU3Z 19093-EN-07... -
Page 10: Function Description
PU3Z Function description The voltage monitoring relay PU3Z operates as a threshold switch. It measures the three phase voltages L1, L2, L3. The N/C contact of the contactor to be monitored must be con- nected at the input circuit and the measuring voltages have to be connected to the measur- ing circuit. -
Page 11: Operating Modes
Manual start: Device becomes active after the input circuit and the start circuit has been closed and all the measuring voltages are <U Increase in the number of safety contacts available by connecting external contactors. Operating Manual PU3Z | 11 19093-EN-07... -
Page 12: Timing Diagram
VOLTAGE HAZARD DETECTION: LED lights when there is a measuring voltage of >10 VAC, although the input circuit is closed. SYSTEM FAULT: LED on: Open circuit on at least one measuring line or internal error. : Automatic test duration ** Open circuit or internal error Operating Manual PU3Z | 12 19093-EN-07... -
Page 13: Installation
To meet the requirements of the safety circuits, separate wires in separate multicore cables must be used for the measuring voltages L1, L2, L3, N and the measuring voltages L1*, L2*, L3*, N*. The three-phase network must be earthed in the star point. Operating Manual PU3Z | 13 19093-EN-07... -
Page 14: Preparing For Operation
Measuring voltage L1 Measuring voltage L2 Measuring voltage L3 Measuring voltage N Start circuit Automatic start Manual start Feedback loop with feedback loop monitoring without feedback loop monitoring Contacts from external contactors or link Operating Manual PU3Z | 14 19093-EN-07... -
Page 15: Operation
Open circuit on at least one measuring circuit or internal error. VOLTAGE HAZARD DETECTION Input circuit closes and a measuring voltage >10 V AC. VL1-L2(Y41) … VL3-N(Y46) Status of the measuring voltage (s. chapter "Function Description [ 10]") Operating Manual PU3Z | 15 19093-EN-07... -
Page 16: Faults - Interference
Y4-Y5 is closed. Contact malfunctions: If the contacts have welded, reactivation will not be possible after the input circuit has opened. Dimensions in mm 75 (2.95") 112,5 (4.41") 87 (3.42") Operating Manual PU3Z | 16 19093-EN-07... -
Page 17: Technical Details
Max. inrush current impulse Current pulse, input circuit 0,1 A 0,1 A Pulse duration, input circuit 200 ms 200 ms Current pulse, feedback loop 0,1 A 0,1 A Pulse duration, feedback loop 150 ms 150 ms Operating Manual PU3Z | 17 19093-EN-07... - Page 18 1200 VA 1200 VA DC1 at 24 V 24 V Min. current 0,01 A 0,01 A Max. current Max. power 120 W 120 W Utilisation category In accordance with the standard EN 60947-5-1 EN 60947-5-1 Operating Manual PU3Z | 18 19093-EN-07...
- Page 19 With automatic start after power on typ. 2.700 ms 2.700 ms With automatic start after power on max. 4.000 ms 3.500 ms With manual start typ. 20 ms 20 ms With manual start max. 3.000 ms 3.000 ms Operating Manual PU3Z | 19 19093-EN-07...
- Page 20 III / II Pollution degree Rated insulation voltage 600 V 600 V Rated impulse withstand voltage 6 kV 6 kV Protection type Housing IP40 IP40 Terminals IP20 IP20 Mounting area (e.g. control cab- inet) IP54 IP54 Operating Manual PU3Z | 20 19093-EN-07...
- Page 21 8 mm 8 mm Dimensions Height 87 mm 87 mm Width 112,5 mm 112,5 mm Depth 121 mm 121 mm Weight 735 g 735 g Where standards are undated, the 2020-07 latest editions shall apply. Operating Manual PU3Z | 21 19093-EN-07...
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Page 22: 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 PU3Z | 22 19093-EN-07... -
Page 23: Supplementary Data
With capacitive loads, any power surges that occur must be noted. With DC con- tactors, use flywheel diodes for spark suppression. Order reference Type Features Terminals Order no. PU3Z 120 - 240 VAC Screw terminals 775505 PU3Z 24 V DC Screw terminals 775510 Operating Manual PU3Z | 23 19093-EN-07... - Page 24 This product/these products meet the requirements of the directive 2006/42/EC for ma- chinery of the 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 PU3Z...
- Page 25 We are represented internationally. Please refer to our homepage www.pilz.com for further details or contact our headquarters. Headquarters: Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: info@pilz.com, Internet: www.pilz.com...
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