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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. SD means Secure Digital...
Content Introduction Validity of documentation Retaining the documentation Definition of symbols Intended use For your safety Unit features Safety features Block diagram/terminal configuration Function description Installation Wiring Preparing for operation Operation Status indicators Faults malfunctions Technical details Safety characteristic data Supplementary data Service life graph Order reference EC declaration of conformity Operating Manual PNOZ c2 22212EN02...
PNOZ c2 Introduction Validity of documentation This documentation is valid for the product PNOZ c2. 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. Retaining the documentation This documentation is intended for instruction and should be retained for future reference. Definition of symbols Information that is particularly important is identified as follows: DANGER! This warning must be heeded! It warns of a hazardous situation that poses an immediate threat of serious injury and death and indicates preventive measures that can be taken. WARNING! This warning must be heeded! It warns of a hazardous situation that could lead to serious injury and death and indicates preventive measures that can be taken. CAUTION! This refers to a hazard that can lead to a less serious or minor injury plus material damage, and also provides information on preventive measures that can be taken. NOTICE This describes a situation in which the product or devices could be dam aged and also provides information on preventive measures that can be taken. It also highlights areas within the text that are of particular import ance. Operating Manual PNOZ c2 22212EN02...
PNOZ c2 INFORMATION This gives advice on applications and provides information on special fea tures. Intended use The safety relay meets the requirements of EN 6094751, EN 602041 and VDE 01131 and may be used in applications with dualchannel positive switching OSSDs such as periodically tested light guard type 2 in accordance with EN 614961 Light guard type 4 EN 614961 safe sensors with semiconductor outputs The safety relay provides a safetyrelated interruption of a safety circuit. The following is deemed improper use in particular: Any component, technical or electrical modification to a product Use of a product outside the areas described in the product documentation Any use that is not in accordance with the documented technical details. For your safety Only install and commission the unit if you have read and understood these operating instructions and are familiar with the applicable regulations for health and safety at work and accident prevention. Ensure VDE and local regulations are met, especially those relating to safety. Any guarantee is rendered invalid if the housing is opened or unauthorised modifica tions are carried out. 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. Unit features Positiveguided relay outputs: – 2 safety contacts (N/O), instantaneous 1 semiconductor output (auxiliary output) Connection options for: – Type 2 or Type 4 light guards – safe sensors with semiconductor outputs (OSSD) – Start button LED display for: – Supply voltage –...
PNOZ c2 Safety features The relay meets the following safety requirements: The circuit is redundant with builtin selfmonitoring. 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 onoff cycle. Block diagram/terminal configuration *Insulation to the nonmarked area: Protective separation (overvoltage category III), Insulation of relay contacts against each other: Basic insulation (overvoltage category III), protective separation (overvoltage category II) Function description When the supply voltage is supplied, the "POWER" LED illuminates. The unit is ready for operation when the start circuit is closed or when a start contact is opened and closed again in the start circuit. High signal at input circuit (e.g. light guard nor interrupted): The safety contacts are closed and the semiconductor output transmits. Low signal at the input circuit (e.g. light guard is interrupted): The safety contacts are open and the semiconductor output is deenergised. Dualchannel operation without detection of shorts across contacts: redundant input cir cuit, detects earth faults in the start and input circuit. Automatic start: Unit becomes active as soon a there is a high signal at the input circuit. Monitored start: Unit is active once there is a high signal at the input circuit and then the start circuit is closed. Increase in the number of available instantaneous safety contacts by connecting con tact expander modules or external contactors. Operating Manual PNOZ c2 22212EN02...
PNOZ c2 Installation The unit 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. Ensure the unit is mounted securely on a vertical DIN rail (35 mm) by using a fixing ele ment (e.g. retaining bracket or an end angle). Wiring Please note: Information given in the "Technical details" must be followed. Outputs 1314 and 2324 are safety contacts, the semiconductor output Y32 is an auxil iary output (e.g. for display). Semiconductor output Y32 should not be used for safety circuits! To prevent contact welding, a fuse should be connected before the output contacts (see Technical details). Use copper wire that can withstand 60/75 °C. Do not connect capacitive load. 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. INFORMATION The voltage at the inputs S12, S22 has to be at least 24 V DC less the lower tolerance value of the supply voltage (s. technical details). When the voltage is too low, increase the supply voltage until at least the lower tolerance value is reached at the inputs. Preparing for operation Supply voltage Input circuit Singlechannel Dualchannel Light guard or safe sensor with 24 V DC detection of shorts across con tacts and short circuit proof OSSDs Operating Manual PNOZ c2 22212EN02...
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PNOZ c2 NOTICE It must not be possible to disconnect the supply voltage of PNOZ c2 and the supply voltage for the safe sensor or light guard separately. * When operating with a light guard: Use the free connections A1 and A2 for connecting the supply voltage of the sender. Start circuit/feedback loop Start circuit Feedback loop automatic start monitored start NOTICE The unit automatically starts when the start circuit S33S35 is overridden. Use external circuit measures to prevent an unexpected restart. Semiconductor output *Connect together the 0V connections on all the external power supplies Operating Manual PNOZ c2 22212EN02...
PNOZ c2 Operation The unit is ready for operation when the Power LED is permanently lit. LEDs indicate the status and errors during operation: Status indicators Power Supply voltage is present. CH.1 Safety contacts of channel 1 are closed. CH.2 Safety contacts of channel 2 are closed. Faults malfunctions Contact malfunctions: If the contacts have welded, reactivation will not be possible after the input circuit has opened. Technical details General 710002 Approvals CCC, CE, EAC (Eurasian), TÜV, cULus Listed Electrical data 710002 Supply voltage Voltage 24 V Kind Voltage tolerance 20 %/+20 % Output of external power supply (DC) 3,0 W Residual ripple DC 20 % Continuous duty 100 % Max. inrush current impulse Current pulse, A1 2,00 A Pulse duration, A1 4,0000 ms Current pulse, input circuit 0,20 A Pulse duration, input circuit 70,0 ms Current pulse, feedback loop...
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PNOZ c2 Electrical data 710002 Current at Input circuit DC 30,0 mA Start circuit DC 40,0 mA Feedback loop 40,0 mA Number of output contacts Safety contacts (N/O), instantaneous Inputs 710002 Number Semiconductor outputs 710002 Number Voltage 24,0 V Current 20 mA Relay outputs 710002 Max. short circuit current IK 1 kA Utilisation category In accordance with the standard EN 6094741 Safety contacts, AC1 at 240 V Max. current 3,0 A Min. current 0,01 A Max. power 750 VA Safety contacts, DC 1 at 24 V Max. current 4,0 A Min. current 0,01 A...
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PNOZ c2 Times 710002 Switchon delay With automatic start typ. 200 ms With automatic start max. 550 ms With monitored start with rising edge typ. 20 ms With monitored start with rising edge max. 50 ms Delayon deenergisation With ESTOP typ. 5 ms With ESTOP max. 12 ms Recovery time at max. switching frequency 1/s After ESTOP 300 ms Waiting period with a monitored start With rising edge 300 ms Min. start pulse duration with a monitored start With rising edge 30 ms Supply interruption before deenergisation 20 ms Simultaneity, channel 1 and 2 ∞ Environmental data 710002 Climatic suitability EN 60068278 Ambient temperature Temperature range 10 55 °C Storage temperature Temperature range 40 85 °C EN 6094751, EN 6100062, EN 6100064 Vibration In accordance with the standard...
PNOZ c2 Mechanical data 710002 Conductor cross section with springloaded terminals: Flexible with/without crimp connector 0,25 1,50 mm², 24 16 AWG Springloaded terminals: Terminal points per connec tion Stripping length 9 mm Dimensions Height 105,0 mm Width 22,5 mm Depth 100,0 mm Weight 160 g The standards current on 201212 apply. Safety characteristic data Operating EN ISO EN ISO EN IEC EN IEC IEC 61511 IEC 61511 EN ISO mode 138491: 138491: 62061 62061 138491: 2008 2008 2008 SIL CL [1/h] Category [year] Safety con...
PNOZ c2 Supplementary data CAUTION! It is essential to consider the relay's service life graphs. The relay outputs' safetyrelated characteristic data is only valid if the values in the service life graphs are met. The PFH value depends on the switching frequency and the load on the relay output. If the service life graphs are not accessible, the stated PFH value can be used irrespective of the switching 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. Service life graph 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 negli gible. Service life graphs at 24 V DC and 230 V AC Operating Manual PNOZ c2 22212EN02...
PNOZ c2 Service life graphs at 110 V DC Example Inductive load: 0.2 A Utilisation category: AC15 Contact service life: 1 000 000 cycles Provided the application requires fewer than 1 000 000 cycles, the PFH value (see tech nical details) can be used in the calculation. To increase the service life, sufficient spark suppression must be provided on all output contacts. With DC contactors, use flywheel diodes for spark suppression. Order reference Type Features Terminals Order no. PNOZ c2 24 VDC With springloaded terminals 710 002 EC declaration of conformity 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/downloads. Representative: Norbert Fröhlich, Pilz GmbH & Co. KG, FelixWankelStr. 2, 73760 Ost fildern, Germany Operating Manual PNOZ c2 22212EN02...
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+49 711 3409-444 represented by our subsidiaries support@pilz.com and sales partners. Please refer to our homepage for further details or contact our headquarters. Pilz GmbH & Co. KG Felix-Wankel-Straße 2 73760 Ostfildern, Germany Telephone: +49 711 3409-0 Telefax: +49 711 3409-133 E-Mail: pilz.gmbh@pilz.de...
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