Safety Integrated Functional Examples - February 2007 A&D CD MM 2

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Specifications	Safety Integrated Functional Examples - February 2007 A&D CD MM 2
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390Functional Example No. AS-FE-I-012-V10-EN Ex. No.12Network 1 to 4 In these networks, the value of the speed determined by

Specifications	Safety Integrated Functional Examples - February 2007 A&D CD MM 2
Outline	Safety Integrated Functional Examples - March 2007 Contents Safety-related controls - SIRIUS Safety Integrated Functional examples with SIRIUS 3TK28 safety relay CD-FE-I-001-V11-EN - E-Stop with manual start Category 2 acc. to EN 954-1 with a SIRIUS 3TK28 safety relay CD-FE-I-002-V10-EN - E-Stop with monitored start Category 4 acc. to EN 954-1with a SIRIUS 3TK28 safety relay CD-FE-I-003-V11-EN - Protective door monitoring with automatic start Category 2 acc. to EN 954-1 with a SIRIUS 3TK28 safety relay CD-FE-I-004-V10-EN - Protective door monitoring with automatic start Category 4 acc. to EN 954-1 with a SIRIUS 3TK28 safety relay CD-FE-I-017-V10-EN - E-Stop with monitored start Category 2 acc. to EN 954-1 with a SIRIUS 3TK28 safety relay with contactor relays CD-FE-I-018-V10-EN - E-Stop with monitored start Category 2 acc. to EN 954-1 with/without operational switching with a SIRIUS 3TK28 safety relay with contactor relay CD-FE-I-019-V10-EN - E-Stop with monitored start Category 4 acc. to EN 954-1 with/without operational switching with a SIRIUS 3TK28 safety relay with contactor relays CD-FE-I-020-V10-EN - Protective door monitoring with automatic start Category 2acc. to EN 954-1 with a SIRIUS 3TK28 safety relay with contactor relays CD-FE-I-021-V10-EN - Protective door monitoring with automatic start Category 2 acc. to EN 954-1 with/without operational switching with a SIRIUS 3TK28 safety relay with contactor relays CD-FE-I-022-V10-EN - Protective door monitoring with automatic start Category 4 acc. to EN 954-1 with/without operational switching using a SIRIUS 3TK28 safety relay with contactor relays CD-FE-I-023-V10-EN - E-Stop with monitored start, protective door monitoring with automatic start and service mode, Category 2 acc. to EN 954-1 with a SIRIUS 3TK2845 safety relay CD-FE-I-024-V10-EN - E-Stop with monitored start, protective door monitoring with automatic start and service mode, Category 4 acc. to EN 954-1 with a SIRIUS 3TK2845 safety relay
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Content	390Functional Example No. AS-FE-I-012-V10-EN Ex. No.12Network 1 to 4 In these networks, the value of the speed determined by PROFIBUS is formed (N_PB -> N_PB_POS). This value is re- quired further. The speed value determined via the count module of ET 200S is always positive. Network 5 to 7 In these networks the plausibility checks whether the actual speed value determined with PROFIBUS and the actual speed value determined with the ET 200S count module are deviat- ing. First, the difference SUB_RES is formed of both deter- mined values (NW5). This difference is in NW7 compared with the tolerance value N_DIFF. If the difference is outside this tolerance value, this is interpreted as error. In this case N_ERR2=1 which, if safe speed (SG) mode is set, causes a safe drive shutdown. Network 8 In this network it is checked whether the actual speed value exceeds the limit value N_MAX. In this case N_ERR1=1 which in safe speed (SG) mode causes a safe drive shutdown. Network 9 In this network the safe standstill is defined. The switch-on delay CHECK_TON becomes 1 ■if the drive is not in standstill AND ■the time parameterized at PT has elapsed. In case of an error at CHECK_TON =1 during plausibility check in safe speed (SG) mode, the drive is switched off safely. Without the switch-on delay CHECK_TON the drive would stop after switching on, as due to the inertia of the mechanical contacts, the plausibility conditions at times t<DELAY_ON are not fulfilled. Note When determining the standstill, the drive speed (here: N_PB_POS and N_COUNT) is not compared with0, but with N0_TOL (here: 2). This takes into account, that the incremental shaft encoder can also detect speeds not equal to 0 due to small movements of the drive. On average, however, the speeds are 0. The comparison value must be adjusted to your indi- vidual situation.
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