E-STOP relay, safety gate monitor Up to Category 4, EN 954-1 PNOZ 16S Unit features E-STOP pushbuttons Safety gates Positive-guided relay outputs: Safety mats 2 safety contacts (N/O), instanta- Safe edges neous The safety relay is not suitable for non- 2 semiconductor outputs contact barriers because Connection options for: a dynamic start is not possible E-STOP pushbutton the unit can be started during the Safety gate limit switch delay-on de-energisation time. Reset button Safe edges Safety features Safety mats LED indicator for: The relay meets the following safety Safety relay for monitoring emergency Switch status channel 1/2 requirements: stop pushbuttons, safety gates, safety Supply voltage The circuit is redundant with built-in mats and safe edges Detection of shorts across con- self-monitoring. tacts on safety matEXT. The safety function remains effec- Approvals FAUL tive in the case of a component fail- Semiconductor outputs signal: ure. Switch status channel 1/2 The correct opening and closing of PNOZ 16S Supply voltage is presentDetec- the safety function relays is tested tion of shorts across contacts on automatically in each on-off cycle. safety matEXT. FAUL The tranformer is short circuit- proof. An electronic fuse is used on Unit description a DC supply. The safety relay meets the require- ments of EN 60947-5-1, EN 60204-1 and VDE 0113-1 and may be used in applications with Block diagram Pilz GmbH & Co. KG, Felix-Wankel-Strae 2, 73760 Ostfildern, Germany NSG-D-2-357-2008-06 Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh pilz.deE-STOP relay, safety gate monitor Up to Category 4, EN 954-1 PNOZ 16S Function description short circuits and shorts be- ready for operation again once the tween contacts in the input cir- recovery time has elapsed. Single-channel operation: no re- cuit. Automatic start: Unit is active once dundancy in the input circuit, earth When the safety mat is actuated, a the input circuit has been closed. faults in the reset circuit are detect- short is formed between the inputs Manual reset: Unit is active once ed. and internal fault detection is ener- the input circuit is closed and then Dual-channel operation with detec- gised. The safety contacts open the reset circuit is closed. tion of shorts across contacts: re- and the LED EXT.FAULT is lit. If the Increase in the number of available dundant input circuit, detects safety mat is cleared and supply contacts by connecting contact ex- earth faults in the reset and input voltage is maintained, the unit is pansion modules or external con- circuit, tactors/relays. Timing diagram Key Power: Supply voltage Out semi CH: Semiconductor out- a: Input circuit closes before reset Reset/start: Reset circuit S33-S34 put switch status Y32 circuit Input: Input circuits S11-S12, S21- FAULT: Short between contacts in b: Reset circuit closes before input S22, S31-S32 the input circuit due to actuation of circuit Output safe: Safety contacts 13-14, safety mat t : Switch-on delay 1 23-24 c : Automatic reset t : Delay-on de-energisation 2 Out semi FAULT: Semiconductor d : Manual reset t : Recovery time after short across 3 output supply voltage Y35 contacts Wiring Please note: R /km = cable resistance/km l Information given in the Technical Use copper wire that can withstand details must be followed. 60/75 C. Outputs 13-14, 23-24 are safety Sufficient fuse protection must be contacts. provided on all output contacts with To prevent contact welding, a fuse capacitive and inductive loads. should be connected before the output contacts (see technical de- tails). Calculation of the max. cable runs l in the input circuit: max R = max. overall cable resist- lmax ance (see technical details) Pilz GmbH & Co. KG, Felix-Wankel-Strae 2, 73760 Ostfildern, Germany NSG-D-2-357-2008-06 Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh pilz.de -2