E-STOP relays up to Category 2, EN 954-1 PNOZ X1 Unit features Safety features Positive-guided relay outputs: The relay meets the following safety 3 safety contacts (N/O), instanta- requirements: neous The circuit is redundant with built-in 1 auxiliary contact (N/C), instan- self-monitoring. taneous The safety function remains effec- Safe separation of safety contacts tive in the case of a component fail- 13-14, 23-24, 33-34 from input cir- ure. cuits A1-A2, feedback loop Y1-Y2 The correct opening and closing of and auxiliary contact 41-42. the safety function relays is tested Connection options for: automatically in each on-off cycle. E-STOP pushbutton Reset button LED indicator for: Safety relay for monitoring E-STOP Switch status channel 1/2 pushbuttons. Supply voltage Approvals Unit description PNOZ X1 The safety relay meets the require- ments of EN 60204-1 and IEC 60204- 1 and may be used in applications with E-STOP pushbuttons The safety relay is not suitable for non- contact barriers because a dynamic start is not possible the unit can be started during the delay-on de-energisation time. Block diagram * Safe separation in accordance with EN 60947-1, 6 kV (see unit features) Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Strae 2, 73760 Ostfildern, Germany NSG-D-2-069-2006-09 Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh pilz.deE-STOP relays up to Category 2, EN 954-1 PNOZ X1 Function description Automatic start: Unit is active once Increase in the number of available the input circuit has been closed. contacts by connecting contact ex- Single-channel operation: no re- Manual reset: Unit is active once pander modules or external contac- dundancy in the input circuit, earth the input circuit is closed and then tors/relays. faults in the reset circuit are detect- the reset circuit is closed. ed. Timing diagram Key Power: Supply voltage Output aux: Auxiliary contacts 41- b: Reset circuit closes before input Reset/start: Reset circuit Y1-Y2 42 circuit Input: Input circuits A1-L+ c : Automatic reset t : Switch-on delay 1 Output safe: Safety contacts 13-14, d : Manual reset t : Delay-on de-energisation 2 23-24, 33-34 a: Input circuit closes before reset circuit Wiring Please note: Information given in the Technical details must be followed. Outputs 13-14, 23-24, 33-34 are safety contacts, output 41-42 is an auxiliary contact (e.g. for display). 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. Sufficient fuse protection must be provided on all output contacts with capacitive and inductive loads. Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Strae 2, 73760 Ostfildern, Germany NSG-D-2-069-2006-09 Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh pilz.de -2