PNOZ X2.
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. Source code from third-party manufacturers or open source software has been used for some components. The relevant licence information is available on the Internet on the Pilz homepage.
Contents Introduction Validity of documentation Using the documentation Definition of symbols 4 4 4 4 Safety Intended use Safety regulations Safety assessment Use of qualified personnel Warranty and liability Disposal For your safety 5 5 5 5 5 6 6 6 Unit features 7 Safety features 7 Block diagram/terminal configuration 7 Function Description Operating modes Timing diagram 8 8 8 Installation 9 Wiring 9 Preparing for operation 10 Operation Status indicators 11 12 Faults – Interference 12
PNOZ X2.1 Introduction Validity of documentation This documentation is valid for the product PNOZ X2.1. 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. 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 X2.1 INFORMATION This gives advice on applications and provides information on special features. Safety Intended use The safety relay PNOZ X2.1 provides a safety-related interruption of a safety circuit.
PNOZ X2.1 A competent person is someone who, because of their training, experience and current professional activity, has the specialist knowledge required to test, assess and operate the work equipment, devices, systems, plant and machinery in accordance with the general standards and guidelines for safety technology.
PNOZ X2.1 Unit features } Positive-guided relay outputs: – } } 2 safety contacts (N/O), instantaneous Connection options for: – E-STOP pushbutton – Safety gate limit switch – Start button LED display for: – Supply voltage – Switch status of the safety contacts Safety features The safety relay meets the following safety requirements: } The circuit is redundant with built-in self-monitoring. } The safety function remains effective in the case of a component failure.
PNOZ X2.1 Function Description The safety relay PNOZ X2.1 provides a safety-oriented interruption of a safety circuit. When supply voltage is supplied the "POWER" LED is lit. The unit is ready for operation when the start circuit S33-S34 is closed. } } Input circuit is closed (e.g. E-STOP pushbutton not operated): – Safety contacts 13-14 and 23-24 are closed, the unit is active. – The LEDs "CH.1" and "CH.2" are lit. Input circuit is opened (e.g.
PNOZ X2.1 } a: Input circuit closes before start circuit } b: Start circuit closes before input circuit } t1: Switch-on delay } t2: Delay-on de-energisation } t3: Recovery time 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 element (e.g. retaining bracket or an end angle).
PNOZ X2.1 4. Reset the fuse: remove the short circuit and switch off the supply voltage for approx. 1 minute.
PNOZ X2.1 NOTICE 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.
PNOZ X2.1 Status indicators LEDs indicate the status and errors during operation: LED on POWER Supply voltage is present. CH.1 Safety contacts of channel 1 are closed. CH.2 Safety contacts of channel 2 are closed. Faults – Interference } Earth fault: The supply voltage fails and the safety contacts open. Once the cause of the respective fault has been rectified and the supply voltage is switched off for approx. 1 minute, the unit is ready for operation again.
PNOZ X2.1 Technical details General Approvals CCC, CE, EAC (Eurasian), KOSHA, TÜV, cULus Listed Electrical data 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 X2.1 Relay outputs Utilisation category of safety contacts AC1 at Min. current Max. current Max. power DC1 at Min. current Max. current 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 in accordance with UL Voltage With current Voltage With current Pilot Duty External contact fuse protection, safety contacts In accordance with the standard Max.
PNOZ X2.1 Times Recovery time at max. switching frequency 1/s After E-STOP After power failure Supply interruption before de-energisation Simultaneity, channel 1 and 2 max.
PNOZ X2.1 Mechanical data Dimensions Height Width Depth Weight 87 mm 22,5 mm 121 mm 195 g Where standards are undated, the 2014-07 latest editions shall apply. Safety characteristic data NOTICE You must comply with the safety-related 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 PL e Cat.
PNOZ X2.1 Service life graph Number of cycles x 1000 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 negligible. Switching current (A) Example } Inductive load: 0.
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