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- Page 1 PNOZ s4.1 Operating Manual-21890-EN-15 - Safety relays...
- Page 2 We do assure you that all persons are regarded without discrim- ination and on an equal basis. 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
Set operating modes .........................13 Connection ..........................14 Application examples ......................17 Operation ..........................20 Status indicators........................20 Error indicators..........................21 Faults - malfunctions ......................22 Dimensions in mm .........................22 Technical details ........................23 Safety characteristic data......................30 Classification according to ZVEI, CB24I ...................31 Operating Manual PNOZ s4.1 21890-EN-15... - Page 4 Contents Supplementary data .......................32 Service life graph ........................32 Permitted operating height ......................34 Remove plug-in terminals .....................35 Order reference ........................35 EC declaration of conformity ....................35 UKCA-Declaration of Conformity ..................36 Operating Manual PNOZ s4.1 21890-EN-15...
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Page 5: Introduction
PNOZ s4.1 Introduction Validity of documentation This documentation is valid for the product PNOZ s4.1. 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 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 PNOZ s4.1 21890-EN-15... -
Page 7: 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 PNOZ s4.1 21890-EN-15... -
Page 8: Unit 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 PNOZ s4.1 21890-EN-15... -
Page 9: Block Diagram/Terminal Configuration
: 48 - 240 VAC/DC; Order no. 750154, 751154 Fig.: Centre: Front view with cover, right: Front view without cover *Insulation between the non-marked area and the relay contacts: Basic insulation (over- voltage category III), Protective separation (overvoltage category II) Operating Manual PNOZ s4.1 21890-EN-15... -
Page 10: Function Description
Dual-channel operation without detection of shorts across contacts: Redundant input cir- cuit, detects PNOZ s4.1 – earth faults in the start and input circuit, – short circuits in the input circuit and, with a monitored start, in the start circuit too. -
Page 11: Timing Diagram
The safety relay should be installed in a control cabinet with a protection type of at least IP54. Use the notch on the rear of the unit to attach it to a DIN rail (35 mm). Operating Manual PNOZ s4.1 | 11 21890-EN-15... -
Page 12: Wiring
If you connect contact expansion modules to a base unit with a universal power supply, you will need to limit the conventional thermal current at the contact expansion modules' safety contacts to 70 % of the stated current (see technical details for contact expansion module). Operating Manual PNOZ s4.1 | 12 21890-EN-15... -
Page 13: Preparing For Operation
Do not adjust the rotary switch during operation, otherwise an error mes- sage will appear, the safety contacts will open and the unit will not be ready for operation until the supply voltage has been switched off and then on again. Operating Manual PNOZ s4.1 | 13 21890-EN-15... -
Page 14: Connection
ESPE (only when UB = 24 VDC) NOTICE With single-channel wiring the safety level of your machine/plant may be lower than the safety level of the unit (see Safety characteristic data [ 30]). Operating Manual PNOZ s4.1 | 14 21890-EN-15... - Page 15 E-STOP pushbutton is released. Use external circuit measures to prevent an unexpected restart. Semiconductor output Unit types with U 24 VDC Unit types with U 48 - 240 VAC/DC *Connect together the 0V connections on all the external power supplies Operating Manual PNOZ s4.1 | 15 21890-EN-15...
- Page 16 If a base unit and a contact expansion module from the PNOZsigma range are connected via the connector, no additional wiring is necessary. Legend S1/S2: E-STOP/safety gate switch S3: Reset button : Switch operated : Gate open : Gate closed Operating Manual PNOZ s4.1 | 16 21890-EN-15...
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Page 17: Application Examples
Monitored start falling edge with feedback loop monitoring 6WDUW 9'& )HHGEDFN /RRS 3RZHU ,Q ,Q 312= V 6WDUW PRGH 9'& )DXOW QR QF < 3,/= 312= V 9'& QR QF Operating Manual PNOZ s4.1 | 17 21890-EN-15... - Page 18 Monitored start falling edge with feedback loop monitoring 6WDUW 9'& )HHGEDFN /RRS 3RZHU ,Q ,Q 312= V 6WDUW PRGH 9'& )DXOW QR QF < 3,/= 312= V 9'& QR QF Operating Manual PNOZ s4.1 | 18 21890-EN-15...
- Page 19 Automatic start with feedback loop monitoring 9'& 266' 266' )HHGEDFN /RRS 3RZHU ,Q ,Q 312= V 6WDUW PRGH 9'& )DXOW QR QF < 3,/= 312= V 9'& QR QF Operating Manual PNOZ s4.1 | 19 21890-EN-15...
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Page 20: Operation
Supply voltage is present. Input circuit at S12 is closed. Input circuit at S22 is closed. Safety contacts are closed and semiconductor output Y32 carries a high signal. START 24 VDC is present at S34. Operating Manual PNOZ s4.1 | 20 21890-EN-15... -
Page 21: Error Indicators
IN1, IN2 sim- FAULT ultaneously Diagnostics: Power-up blocked due to short-term interruption at S12 and S22; channels in the input circuit not opened simultaneously. Remedy: Open S11-S12 and S21-S22 simultaneously and then close again. Operating Manual PNOZ s4.1 | 21 21890-EN-15... -
Page 22: Faults - Malfunctions
"mode". Faults - malfunctions Contact malfunctions: If the contacts have welded, reactivation will not be possible after the input circuit has opened. Dimensions in mm *with spring-loaded terminals Operating Manual PNOZ s4.1 | 22 21890-EN-15... -
Page 23: Technical Details
15 ms 15 ms 15 ms 15 ms Current pulse, start circuit 0,2 A 0,2 A 0,2 A 0,2 A Pulse duration, start circuit 15 ms 15 ms 15 ms 15 ms Operating Manual PNOZ s4.1 | 23 21890-EN-15... - Page 24 0 mA 0 mA Utilisation category in accordance with EN 60947-1 DC-12 DC-12 DC-12 DC-12 Relay outputs 750124 750154 751124 751154 Number of output contacts Safety contacts (N/O), instantan- eous Auxiliary contacts (N/C) Operating Manual PNOZ s4.1 | 24 21890-EN-15...
- Page 25 Max. current 0,6 A 0,6 A 0,6 A 0,6 A DC13 (6 cycles/ min) at 24 V 24 V 24 V 24 V Max. current 0,4 A 0,4 A 0,4 A 0,4 A Operating Manual PNOZ s4.1 | 25 21890-EN-15...
- Page 26 Blow-out fuse, gG 4 A Circuit breaker, 24 V AC/DC, characteristic B/C 3 A Conventional thermal current AgCuNi + 0,2 µm AgCuNi + 0,2 µm AgCuNi + 0,2 µm AgCuNi + 0,2 µm Contact material Operating Manual PNOZ s4.1 | 26 21890-EN-15...
- Page 27 150 ms Min. start pulse dur- ation with a mon- itored start with falling edge 100 ms 100 ms 100 ms 100 ms with rising edge 30 ms 30 ms 30 ms 30 ms Operating Manual PNOZ s4.1 | 27 21890-EN-15...
- Page 28 Terminals IP20 IP20 IP20 IP20 Mounting area (e.g. control cab- inet) IP54 IP54 IP54 IP54 Mechanical data 750124 750154 751124 751154 Mounting position Mechanical life 10,000,000 cycles 10,000,000 cycles 10,000,000 cycles 10,000,000 cycles Operating Manual PNOZ s4.1 | 28 21890-EN-15...
- Page 29 22,5 mm 22,5 mm 22,5 mm Depth 120 mm 120 mm 120 mm 120 mm Weight 190 g 210 g 185 g 210 g Where standards are undated, the 2022-09 latest editions shall apply. Operating Manual PNOZ s4.1 | 29 21890-EN-15...
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Page 30: Safety Characteristic Data
A safety function's SIL/PL values are not identical to the SIL/PL values of the units that are used and may be different. We recommend that you use the PAScal software tool to calculate the safety function's SIL/PL values. Operating Manual PNOZ s4.1 | 30 21890-EN-15... -
Page 31: Classification According To Zvei, Cb24I
Relay outputs Interfaces Source Interface Module Class Drain Interface Actuator Class Source parameters Min. switching voltage 12 V Max. switching voltage 250 V Min. switching current 0,003 A Max. switching current Potential isolation Operating Manual PNOZ s4.1 | 31 21890-EN-15... -
Page 32: Supplementary Data
AC-1: 230V AC-1: 230V AC-15: 230V AC-15: 230V DC-13: 24V DC-13: 24V 3 4 5 6 8 10 Switching current (A) Fig.: Service life graphs at 24 V DC and 230 V AC Operating Manual PNOZ s4.1 | 32 21890-EN-15... - Page 33 To increase the service life, sufficient spark suppression must be provided on all relay con- tacts. With capacitive loads, any power surges that occur must be noted. With DC contact- ors, use flywheel diodes for spark suppression. Operating Manual PNOZ s4.1 | 33 21890-EN-15...
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Page 34: Permitted Operating Height
From an operating height of 2000 m the max. permitted ambient temperature is reduced by 0.5 °C/100 m Operating height Permitted ambient temperature 3000 m 50 °C 4000 m 45 °C 5000 m 40 °C Operating Manual PNOZ s4.1 | 34 21890-EN-15... -
Page 35: Remove Plug-In Terminals
European Parliament and of the Council. The complete EC Declaration of Conformity is available on the Internet at www.pilz.com/downloads. Authorised representative: Norbert Fröhlich, Pilz GmbH & Co. KG, Felix-Wankel-Str. 2, 73760 Ostfildern, Germany Operating Manual PNOZ s4.1... -
Page 36: Ukca-Declaration Of Conformity
This product(s) complies with following UK legislation: Supply of Machinery (Safety) Regu- lation 2008. The complete UKCA Declaration of Conformity is available on the Internet at www.pilz.com/ downloads. Representative: Pilz Automation Technology, Pilz House, Little Colliers Field, Corby, Northamptonshire, NN18 8TJ United Kingdom, eMail: mail@pilz.co.uk Operating Manual PNOZ s4.1 | 36... - Page 37 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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