PNOZ s4 } Safety relays Operating Manual-21396-EN-18
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 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 ............................................................................................................................ 5 Validity of documentation.......................................................................................................... 5 Using the documentation .......................................................................................................... 5 Definition of symbols..........................................................................
Contents Faults - malfunctions ............................................................................................................. 21 Dimensions in mm ................................................................................................................. 21 Technical details Order no. 750104, 750134, 751104 .......................................................... 22 Technical details Order no. 751134, 751184 ........................................................................
PNOZ s4 Introduction Validity of documentation This documentation is valid for the product PNOZ s4. 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.
PNOZ s4 INFORMATION This gives advice on applications and provides information on special features. Safety Intended use The safety relay provides a safety-related interruption of a safety circuit.
PNOZ s4 Safety regulations Safety assessment Before using a device, a safety assessment in accordance with the Machinery Directive is required. The product as an individual component fulfils the functional safety requirements in accordance with 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 separately.
PNOZ s4 For your safety The unit meets all the necessary conditions for safe operation. However, please note the following: } 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.
PNOZ s4 Block diagram/terminal configuration Unit types with UB 24 VDC } UB: 24 VDC; Order no. 750104, 751104, 751184 * Fig.: Centre: Front view with cover, right: Front view without cover *Insulation between the non-marked area and the relay contacts: Basic insulation (overvoltage category III), Protective separation (overvoltage category II) Unit types with UB 48 - 240 VAC/DC } UB: 48 - 240 VAC/DC; Order no. 750134, 751134 * * Fig.
PNOZ s4 Function description } In2+ Single-channel operation: no redundancy in the input circuit, earth faults in the start circuit and input circuit are detected. } Dual-channel operation without detection of shorts across contacts: Redundant input circuit, detects PNOZ s4 – earth faults in the start and input circuit, – short circuits in the input circuit and, with a monitored start, in the start circuit too.
PNOZ s4 Timing diagram [1] [2] [3] [4] Legend } POWER: Supply voltage } Start: Start circuit } Input: Input circuits } Output safe: Safety contacts } Output aux: Auxiliary contacts } Out semi: Semiconductor output } [1]: Automatic start } [2]: Manual start } [3]: Monitored start with rising edge } [4]: Monitored start with falling edge } a: Input circuit closes before start circuit } b: Start circuit closes before input circuit } t1: Switch-on delay } t2: Delay-on de-energisation } t3: Waiting period w
PNOZ s4 } When installed vertically: Secure the unit by using a fixing element (e.g. retaining bracket or end angle). } Push the device upwards or downwards before lifting it from the DIN rail. Wiring Please note: } Information given in the "Technical details [ 22]" must be followed. } Outputs 13-14, 23-24, 33-34 are safety contacts; output 41-42 is an auxiliary contact (e.g. for display).
PNOZ s4 Preparing for operation Operating modes The operating mode is set via the rotary switch on the unit. You can do this by opening the cover on the front of the unit. NOTICE Do not adjust the rotary switch during operation, otherwise an error message 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. Set operating modes } Switch off supply voltage.
PNOZ s4 Connection Supply voltage Input circuit Unit types with UB 24 VDC Unit types with UB 48 - 240 VAC/DC A1 L+ A2 L- Single-channel Emergency stop without detection of shorts across contacts Dual-channel S1 S1 S11 S11 S12 S12 S22 S22 Emergency stop S1 S11 with detection of shorts across contacts S21 S22 S12 Safety gate without detection of shorts across contacts S1 S11 S11 S1 S2 S12 S22 S12 S22 Safety gate with detection of shorts across contacts S11 S12 S21 S22 Light beam
PNOZ s4 NOTICE When operated with a light grid or sensor – It must not be possible to switch off the supply voltage for the PNOZsigma separately from the supply voltage for the light grid or safety switch. – The operating mode selector switch must be set to "Without detection of shorts across contacts", as shorts across contacts are detected by the ESPE.
PNOZ s4 } : Gate open } : Gate closed Application examples Emergency stop } Dual-channel } with detection of shorts across contacts } Monitored start } falling edge with feedback loop monitoring ) # ) . , . .. # .,< 2 4 8 * . >) >. . , 2 .,< 2 ) : :* > = . 0 4 0 . . ) ), .# " 8 . >, . .. . ?). >. ) %< &- %, , 2 .
PNOZ s4 Safety gate } Dual-channel } with detection of shorts across contacts } Monitored start } falling edge with feedback loop monitoring ) # # ) , . # . .,< 2 4 8 * . . >) >. . , 2 .,< 2 ) : :* > = . 0 4 0 . . .. ) ), .# " 8 . >, . . ?). >. ) %< &- %, , 2 .
PNOZ s4 OSSD signals } Dual-channel } without detection of shorts across contacts of PNOZ - detection of shorts across contacts by sensor technology } Automatic start } with feedback loop monitoring .,< 2 # . . 4 8 * . >) >. . , 2 .,< 2 ) : :* > = . 0 4 0 .. . . ) ), .# " 8 . >, . . ?). >. ) %< &- %, , 2 .
PNOZ s4 Operation When the relay outputs are switched on, the mechanical contact on the relay cannot be tested automatically. Depending on the operational environment, measures to detect the non-opening of switching elements may be required under some circumstances. When the product is used in accordance with the European Machinery Directive, a check must be carried out to ensure that the safety contacts on the relay outputs open correctly.
PNOZ s4 Error indicators All LEDs off Diagnostics: Short across contacts/earth fault; unit switched off } Remedy: Rectify short across contacts/earth fault, switch off supply voltage for 1 min. FAULT Diagnostics: Plug terminator not connected } Remedy: Insert plug terminator, switch supply voltage off and then on again. FAULT Diagnostics: Internal error, unit defective } Remedy: Switch supply voltage off and then on again, change unit if necessary.
PNOZ s4 START FAULT Diagnostics: Position of rotary switch is not permitted or rotary switch was adjusted during operation. } Remedy: Switch supply voltage off and then on again. POWER, IN1, IN2, OUT, START, FAULT Diagnostics: The operating mode selector switch "mode" is in its start position (vertical position) } Remedy: Switch off the supply voltage and set the required operating mode on operating mode selector switch "mode".
PNOZ s4 Technical details Order no.
PNOZ s4 Inputs Max.
PNOZ s4 Relay outputs Utilisation category of safety contacts AC1 at Min. current Max. current Min. output Max. power DC1 at Min. current Max. current Min. output Max. power Utilisation category of auxiliary contacts AC1 at Min. current Max. current Min. output Max. power DC1 at Min. current Max. current Min. output Max. power Utilisation category In accordance with the standard Utilisation category of safety contacts AC15 at Max. current DC13 (6 cycles/min) at Max.
PNOZ s4 Relay outputs 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 External contact fuse protection, auxiliary contacts Max.
PNOZ s4 Times 750104 750134 751104 170 ms 170 ms 170 ms 300 ms 300 ms 300 ms 350 ms 350 ms 350 ms 600 ms 40 ms 300 ms 600 ms 40 ms – 600 ms 40 ms 300 ms 35 ms 35 ms 35 ms 50 ms 50 ms 50 ms 55 ms 55 ms 55 ms 70 ms 70 ms 70 ms 10 ms 20 ms 40 ms 80 ms 10 ms 20 ms 40 ms – 10 ms 20 ms 40 ms 80 ms 100 ms 100 ms 50 ms 100 ms 100 ms 100 ms 120 ms 250 ms 120 ms 150 ms 120 ms 250 ms 100 ms 30 ms 100 ms 30 ms 100 ms 30 ms 20 ms 20 ms 20 ms ∞ ∞ ∞ Environmental data 750104
PNOZ s4 Environmental data Climatic suitability Humidity Condensation during operation EMC 750104 750134 751104 93 % r. h. at 40 °C 93 % r. h. at 40 °C 93 % r. h.
PNOZ s4 Mechanical data Torque setting with screw terminals Stripping length with screw terminals Conductor cross section with spring-loaded terminals: Flexible with/without crimp connector Spring-loaded terminals: Terminal points per connection Stripping length with spring-loaded terminals Dimensions Height Width Depth Weight 750104 750134 751104 0,5 Nm 0,5 Nm – 8 mm 8 mm – – – 0,2 - 2,5 mm², 24 - 12 AWG – – 2 – – 9 mm 98 mm 22,5 mm 120 mm 185 g 98 mm 22,5 mm 120 mm 210 g 100 mm 22,5
PNOZ s4 Technical details Order no. 751134, 751184 General 751134 751184 Certifications CCC, CE, EAC, KOSHA, TÜV, cULus Listed CCC, CE, EAC, KOSHA, TÜV, cULus Listed Electrical data 751134 751184 48 - 240 V AC/DC -15 %/+10 % 24 V DC -15 %/+10 % 5 VA – Supply voltage Voltage Kind Voltage tolerance Output of external power supply (AC) Output of external power supply (DC) Frequency range AC Residual ripple DC Duty cycle Max.
PNOZ s4 Inputs 751134 751184 30 Ohm 30 Ohm 30 Ohm – 30 Ohm 60 Ohm 30 Ohm – Max.
PNOZ s4 Relay outputs Utilisation category of auxiliary contacts AC1 at Min. current Max. current Min. output Max. power DC1 at Min. current Max. current Min. output Max. power Utilisation category In accordance with the standard Utilisation category of safety contacts AC15 at Max. current DC13 (6 cycles/min) at Max. current Utilisation category of auxiliary contacts AC15 at Max. current DC13 (6 cycles/min) at Max.
PNOZ s4 Relay outputs External contact fuse protection, auxiliary contacts Max. melting integral Blow-out fuse, quick Blow-out fuse, slow Blow-out fuse, gG Circuit breaker 24 V AC/DC, characteristic B/C Contact material Conventional thermal current while loading several contacts 751134 751184 66 A²s 6A 4A 6A 160 A²s 10 A 6A 6A 4A AgCuNi + 0,2 µm Au 6A AgCuNi + 0,2 µm Au 751134 751184 6A – 6A – 4,5 A – 6A 6A Ith per contact at UB AC; AC1: 240 V, DC1: 24 V Conv. therm.
PNOZ s4 Times 751134 751184 10 ms 20 ms 40 ms 80 ms 10 ms 20 ms 40 ms 80 ms 50 ms 100 ms 100 ms 100 ms 120 ms 150 ms 120 ms 250 ms Delay-on de-energisation With E-STOP typ. With E-STOP max. With power failure typ. With power failure max. Recovery time at max. switching frequency 1/s After E-STOP After power failure Waiting period with a monitored start With rising edge With falling edge Min.
PNOZ s4 Mechanical data 751134 751184 Mounting position Mechanical life Material Bottom Front Top Connection type Mounting type Conductor cross section with spring-loaded terminals: Flexible with/without crimp connector Spring-loaded terminals: Terminal points per connection Stripping length with spring-loaded terminals Dimensions Height Width Depth Weight Any 10,000,000 cycles Any 10,000,000 cycles PC PC PC Spring-loaded terminal plug-in PC PC PC Spring-loaded terminal plug-in 0,2 - 2,5 mm², 24 -
PNOZ s4 Safety characteristic data NOTICE You must comply with the safety characteristic data in order to achieve the required safety level for your plant/machine. Operating mode EN ISO 13849-1: 2015 EN ISO 13849-1: 2015 PL Category Safety contacts, instantaneous PL e Cat.
PNOZ s4 Classification according to ZVEI, CB24I The following tables describe the classes and specific values of the product interface and the classes of interfaces compatible with it. The classification is described in the ZVEI position paper "Classification of Binary 24 V Interfaces - Functional Safety aspects covered by dynamic testing". Input Interfaces Drain Interface Class Source Interface Class Module C0 Sensor C1, C2, C3 Drain parameters Max. test pulse duration Min. input resistance Max.
PNOZ s4 Supplementary data CAUTION! It is essential to consider the relay's service life graphs. The relay outputs' safety-related characteristic data is only valid if the values in the service life graphs are met. The PFH value depends on the switch frequency and the load of the relay output.
Cycles x 1000 PNOZ s4 Switching current (A) Fig.: Service life graphs at 110 V DC 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 [ 22]) 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.
PNOZ s4 Unit types with UB 48-240 VAC/DC } UB: 48 – 240 VAC/DC; Order no. 750134, 751134 10000 Number of operating cycles x 1000 5000 1000 500 DC-1: 24V AC-1: 230V 100 AC-15: 230V 50 DC-13: 24V 10 0,1 0,5 1 2 3 4 5 6 8 10 Switching current (A) Number of cycles x 1000 Fig.: Service life graphs at 24 VDC and 230 VAC Switching current (A) Fig.
PNOZ s4 Example } Inductive load: 0.2 A } Utilisation category: AC15 } Contact service life: 1 000 000 cycles Provided the application to be implemented requires fewer than 1 000 000 cycles, the PFH value (see Technical details [ 22]) can be used in the calculation. To increase the service life, sufficient spark suppression must be provided on all relay contacts. With capacitive loads, any power surges that occur must be noted. With DC contactors, use flywheel diodes for spark suppression.
PNOZ s4 Permitted operating height The values stated in the technical details apply to the use of the device in operating heights up to max. 2000 m above sea level. When used in greater heights, constraints have to be taken into account: } Permitted maximum operating height 5000 m } Only device versions with UB 24 V DC are permitted (order no.
PNOZ s4 Remove plug-in terminals Procedure: Insert the screwdriver into the housing recess behind the terminal and lever the terminal out. Do not remove the terminals by pulling the cables! Order reference Product type Features Connection type Order no.
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