E-STOP relay, safety gate monitor Up to Category 4, EN 954-1 PNOZ 16 Unit features The safety relay is not suitable for non- contact barriers because Positive-guided relay outputs: a dynamic start is not possible 2 safety contacts (N/O), instanta- the unit can be started during the neous delay-on de-energisation time. Connection options for: E-STOP pushbutton Safety features Safety gate limit switch Reset button The relay meets the following safety Safe edges requirements: Safety mats The circuit is redundant with built-in LED indicator for: self-monitoring. Switch status channel 1/2 The safety function remains effec- Supply voltage tive in the case of a component fail- Safety relay for monitoring emergency Detection of shorts across con- ure. stop pushbuttons, safety gates, safety tacts on safety matEXT. The correct opening and closing of mats and safe edges FAUL the safety function relays is tested See order reference for unit types automatically in each on-off cycle. Approvals The tranformer is short circuit- proof. An electronic fuse is used on Unit description a DC supply. PNOZ 16 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 E-STOP pushbuttons Safety gates Safety mats Safe edges Block diagram Pilz GmbH & Co. KG, Felix-Wankel-Strae 2, 73760 Ostfildern, Germany NSG-D-2-060-2008-06 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 16 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 and input circuit short is formed between the inputs Manual reset: Unit is active once are detected. 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 FAULT: Short between contacts in b: Reset circuit closes before input Reset/start: Reset circuit S33-S34 the input circuit due to actuation of circuit Input: Input circuits S11-S12, S21- safety mat t : Switch-on delay 1 S22, S31-S32 c : Automatic reset t : Delay-on de-energisation 2 Output safe: Safety contacts 13-14, d : Manual reset t : Recovery time after short across 3 23-24 a: Input circuit closes before reset contacts circuit Wiring Please note: Sufficient fuse protection must be Information given in the Technical provided on all output contacts with details must be followed. capacitive and inductive loads. Outputs 13-14, 23-24 are safety contacts. To prevent contact welding, a fuse 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) R /km = cable resistance/km l Use copper wire that can withstand 60/75 C. Pilz GmbH & Co. KG, Felix-Wankel-Strae 2, 73760 Ostfildern, Germany NSG-D-2-060-2008-06 Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh pilz.de -2