Siemens Simatic S7-1500R System Manual page 8

3.5 Failure scenarios ..................................................................................................................... 72
3.5.1 Failure of an IO device in the PROFINET ring ....................................................................... 73
3.5.2 Failure of a switch (with line topology) in the PROFINET ring................................................ 75
3.5.3 Specific failure scenarios with S7-1500R ............................................................................... 77
3.5.3.1 Two cable interruptions in the PROFINET ring in S7-1500R > 1500 ms apart ...................... 77
3.5.3.2 Two cable interruptions in the PROFINET ring in S7-1500R within ≤ 1500 ms ..................... 79
3.5.3.3 Failure of the primary CPU when IO devices have failed in the PROFINET ring ................... 81
3.5.4 Specific failure scenarios with S7-1500H ............................................................................... 84
3.5.4.1 Failure of both redundancy connections in S7-1500H ≤ 1500 ms apart ................................ 84
3.5.4.2 Failure of one redundancy connection and the primary CPU in S7-1500H ............................ 86
3.6 Hardware configuration ........................................................................................................... 88
3.7 Use of a system power supply ................................................................................................ 90
3.8 Using HMI devices .................................................................................................................. 92
4 Installation ............................................................................................................................................ 96
4.1 Basics...................................................................................................................................... 96
4.2 Installing the mounting rail ...................................................................................................... 98
4.3 Installing a load current supply ............................................................................................. 102
4.4 Installing a system power supply .......................................................................................... 104
4.5 Installing R/H-CPUs .............................................................................................................. 106
5 Wiring ................................................................................................................................................. 108
5.1 Rules and regulations for operation ...................................................................................... 108
5.2 Operation on grounded infeed .............................................................................................. 110
5.3 Electrical configuration .......................................................................................................... 113
5.4 Wiring rules ........................................................................................................................... 114
5.5 Connecting the supply voltage .............................................................................................. 115
5.6 Connecting system power supply and load current supply .................................................. 117
5.7 Connecting the CPU to the load power supply ..................................................................... 118
5.8 Connecting interfaces for communication with S7-1500R .................................................... 120
5.8.1 Connecting the PROFINET ring to S7-1500 ......................................................................... 120
5.9 Connecting interfaces for communication with S7-1500H .................................................... 123
5.9.1 Connecting redundancy connections (fiber-optic cables) ..................................................... 123
5.9.1.1 Synchronization modules for S7-1500H ............................................................................... 123
5.9.1.2 Selecting fiber-optic cables ................................................................................................... 124
5.9.1.3 Installing fiber-optic cables ................................................................................................... 128
5.9.1.4 Connecting redundancy connections (fiber-optic cables) to S7-1500H ............................... 130
5.9.2 Connecting the PROFINET ring to S7-1500H ...................................................................... 134
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
Table of contents
7