Siemens: S7-1500 Selection Guide

The SIMATIC S7-1500 is Siemens’ modular, top-of-the-line controller with a variety of CPU types and additional modules that support multiple performance classes and applications with high processing speeds, integrated system diagnostics, and more. The S7-1500 is ideal for mid-size to large-scale applications with high density I/O modules – 8, 16, or 32-count digital I/O modules and 4 or 8-count analog I/O modules are available. The below steps provide a step-by-step guide in selecting the correct S7-1500 hardware configuration for any application.

Please click HERE for complete part number information for the S7-1500 family.

Best-Practice-IconBest Practice: On its own, a contactor is merely a switch device that allows a motor to turn on or off. However, the combination of a contactor (1) and an overload relay (3) creates a motor starter, which combines the functionality of the contactor (switching) and the overload relay (overcurrent protection to the motor) in one single device.

If the contactor does not have auxiliary contacts built in, an additional auxiliary contact (2) is added so that feedback of the contactor’s current state can be provided to external equipment to sound an alarm, activate a backup power source, or other status indicators.

A combination starter uses a motor starter protector (MSP) (4) instead of an overload relay, for additional levels of overcurrent and short-circuit protection. Each motor starter protector will come with a separate connector (5) that attaches the device to a contactor without any additional configuration required. Note: components are only physically compatible with other components of the same series.

IEC starter assembly diagram

The SIMATIC S7-1500 is Siemens’ modular, top-of-the-line controller with a variety of CPU types and additional modules that support multiple performance classes and applications with high processing speeds, integrated system diagnostics, and more. The S7-1500 is ideal for mid-size to large-scale applications with high density I/O modules – 8, 16, or 32-count digital I/O modules and 4 or 8-count analog I/O modules are available. The below steps provide a step-by-step guide in selecting the correct S7-1500 hardware configuration for any application.

Please click HERE for complete part number information for the S7-1500 family.

Best-Practice-IconBest Practice: Use Siemens TIA Selection tool for power budgeting: http://www.siemens.com/tstcloud

  1. Select a CPU based on internal memory and on-board interface(s).
  2. Select a memory card for the CPU.
  3. Select any additional I/O modules required.
  4. Select front connectors based on the “Required Front Connector” field in the I/O module selection table.
  5. Select any communications modules required.
  6. Up to 31 modules can be located on the main CPU rack. If additional or remotely located modules are required, add racks by selecting an ET200MP interface module for each rack. Additional modules are added using the same steps as those for the main rack.
  7. Profinet/Profibus cable and (2) Profinet/ Profibus connectors are required to connect an ET200MP interface module to a CPU. The cable and connector types are dependent on the types of interfaces on the CPU and interface module.
  8. Select a system power module (PM) based on the total current consumption of the system.
  9. Select a bus extension power supply (PS) when the total current consumption of the rack exceeds the power supplied to the backplane by the CPU or ET200MP interface module. This usually happens after 8-10 modules have been added to the rack. Note the AWC Best Practice above!
  10. Select an S7-1500 mounting rail.
  11. Select cables and use the programming software selection guide to select programming software, if required.
Selection steps for S7-1500 PLC family

 

>Use Siemens TIA Selection tool for power budgeting: http://www.siemens.com/tstcloud

  1. Select a CPU based on internal memory and on-board interface(s).
  2. Select a memory card for the CPU.
  3. Select any additional I/O modules required.
  4. Select front connectors based on the “Required Front Connector” field in the I/O module selection table.
  5. Select any communications modules required.
  6. Up to 31 modules can be located on the main CPU rack. If additional or remotely located modules are required, add racks by selecting an ET200MP interface module for each rack. Additional modules are added using the same steps as those for the main rack.
  7. Profinet/Profibus cable and (2) Profinet/ Profibus connectors are required to connect an ET200MP interface module to a CPU. The cable and connector types are dependent on the types of interfaces on the CPU and interface module.
  8. Select a system power module (PM) based on the total current consumption of the system.
  9. Select a bus extension power supply (PS) when the total current consumption of the rack exceeds the power supplied to the backplane by the CPU or ET200MP interface module. This usually happens after 8-10 modules have been added to the rack. Note the AWC Best Practice above!
  10. Select an S7-1500 mounting rail.
  11. Select cables and use the programming software selection guide to select programming software, if required.
Selection steps for S7-1500 PLC family

 

Nitin Patel is an Automation Specialist for AWC, Inc. in the Dallas, TX office. He is a Certified Siemens Technology Specialist for Factory Automation. With over 14 years of experience in industrial automation, he has a BS in Electrical Engineering from Texas A&M University.

Nitin Patel

Product Specialist

Nitin Patel

Product Specialist

Nitin Patel is an Automation Specialist for AWC, Inc. in the Dallas, TX office. He is a Certified Siemens Technology Specialist for Factory Automation. With over 14 years of experience in industrial automation, he has a BS in Electrical Engineering from Texas A&M University.
Leave a Reply

Your email address will not be published. Required fields are marked *