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Siemens 6SN1123-1AA00-0DA2 Configuration Manual
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805.018.5 Start inhibit in the drive modules/safe standstill8-255© Siemens AG 2012 All Rights ReservedSIMODRIVE 611 Configuration Manual (PJU) – 02/2012 EditionNoticeThe start inhibit relay has pick–up and drop–out delay times ofmax. 40 ms. The external wiring must be connected to terminals AS1/AS2 sothat it is short–circuit proof.One side of the excitation coil of the safety relay is connected to the groundedelectronics chassis (PELV circuit according to DIN VDE 0160). When supplyingthe excitation coil (relay coil) from an external 24 V power supply, its negativepole must be connected to ground potential. The external 24 V power supplymust fulfill the requirements for a PELV circuit in compliance with DIN VDE0160.Table 8-1 Technical data of the safety relayTermi-nalDesignation Description Type1)SectionAS12) Contact 1 Feedback signalcontact, relayNC 30 V DC/max. 2 AAS22) Contact 2 Start inhibit 250 V AC/max. 1 A3)663 Control input”start inhibit”Nominal resist-ance of the ex-citation coil600 Ω ... 1000 ΩI 21 – 30 V DCMax. switching frequency:6/minElectrical lifetime: min.100.000 operating cyclesMechanical lifetime: 10 mil-lion operating cycles9 Enable voltageFR+ (internal)O + 24 V19 ReferenceFR– (external)O Chassis ground1) I = input; O = output; NC = NC contact2) When the AS1/AS2 contacts are connected in series a contact resistance ofapprox. 0.20 Ohm must be taken into consideration over the lifetime of the contacts.For a 24 V switching voltage, due to the non–linear contact characteristics, fromexperience, five contacts can be simply connected in series without encounteringany problems.3) In accordance with EN 60204–1 (machine safety), control transformers must be usedfor AC control voltages.! WarningOnly qualified personnel may install and commission the ”safe standstill”function.All of the external safety–relevant cables, e.g. control cable for the safety relay,feedback signal contacts, must be routed so that they are protected, e.g. usingcable ducts. The possibility of short–circuits and cross–circuits must beexcluded.8 Important Circuit Information05.08 |
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