Catalog ST PCS 7.1 - September 2005

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7 Distributed I/O on the PROFIBUS AddFEM: Redundant distributed I/O module for fast response times ■ Overview The Front End Module AddFEM is an autonomous unit for the input/output of analog and digital process signals that can be connected with standardized protocols via the PROFIBUS DP fieldbus to the SIMATIC PCS 7 automation system. In addition to the AddFEM basic version, the product range also comprises special product versions implemented with an intelligent front end function (FEF) (AddFEM PoCo, AddFEM SoE) or based on the stand-alone hardware (AddFEM HART): • AddFEM PoCo is designed for fast position control. • AddFEM SoE (Sequence of Event) has 31 digital inputs with highly accurate time tagging. • AddFEM HART is a redundant I/O module for operation with sensors and actuators with HART capability. ■ Benefits • The redundantly operable AddFEM has particularly fast response times for signal recording, processing and redundancy switching (switchover time less than 500 µs). • The AddFEM has extended level ranges for analog signals and counters. • The analog and digital areas are electrically isolated from one another. • All outputs are monitored and can be switched in parallel with other outputs (redundancy, performance increase). • Analog and digital outputs are permanently short-circuitproof. 7/6 Siemens ST PCS 7.1 · September 2005 ■ Design Built into a rugged high-grade steel housing, which is in line with the SIMATIC S7 design in terms of dimensions and shape, the AddFEM meets stringent environmental requirements. It is prepared for mounting on DIN rails and for direct mounting with bolts. These installation options support both freestanding construction and installation in cabinets or wall-mounted housings. The connecting elements are protected by a removable hood on which the connector pin assignment of the peripheral signals is printed. The functions are set by means of two mode selectors and indicated by 12 LEDs. In accordance with the PLC standard, 2 x 16 LEDs are available in the display panel of the module for signaling the binary I/O signals. ■ Function The AddFEM is equipped with the following process connections: • 12 analog inputs • 8 analog outputs • 12 digital inputs • 3 timer inputs (can also be configured as digital inputs) • 16 digital outputs (can also be configured as digital inputs) The AddFEM PoCo offers: • 8 positioners The AddFEM SoE has: • 31 digital inputs with time tagging The AddFEM HART has: • 24 analog inputs with HART capability • 8 analog outputs with HART capability • 8 power supplies for four-wire transmitters (can alternatively be used as digital outputs) The various signal types are distributed across the process connections in such a way that small applications can be executed with a single module. Applications with a large quantity framework can be implemented by using several modules. The measuring ranges of the analog inputs and outputs are designed so that when using the AddFEM, e.g. for turbine controllers, no additional signal transducers have to be used. By means of an additional current range of ± 50 mA for the analog outputs, additional actuators with a higher required drive power, e.g. fuel control valves, can also be controlled without additional signal amplifiers. The 24 analog inputs and 8 analog outputs of the AddFEM HART are recorded and output in a fast cycle of 833 µs. Transmission of additional signals via HART protocol and monitoring of the transmitters are carried out parallel to this in a 2-s cycle. The AddFEM HART is integrated in SIMATIC PDM and in the PCS 7 Asset Management.
■ Technical specifications AddFEM/AddFEM PoCo/AddFEM SoE General data Dimensions (H x W x D) in mm 295 x 75 x 209 Mass 2.8 kg Power supply 24 V DC Bridging of power failures 10 ms (minimum) Power consumption PROFIBUS DP interfaces 20 W Number of interfaces 2 Baud rate 11 Mbps Max. cable length of a bus segment 100 m Connectable load per interface Digital inputs (programmable) 5 V, max. 80 mA Quantity 12 Type of input Type 1 compliant with IEC 1131-2 Voltage range -30 ... +33 V DC 0-signal level -30 ... +5 V DC 1-signal level +11 ... +30 V DC Electrical isolation 3 groups of 4 digital inputs each Display Digital outputs (programmable) LED in display panel Quantity 16 Type of output Digital semiconductor outputs Nominal output voltage 24 V DC Output voltage with 0-signal < 1 V Output voltage with 1-signal Power supply less 2 V Rated output current 500 mA Short-circuit-proof Yes Short-circuit-to-ground monitoring Yes (internal monitoring) Electrical isolation Analog inputs (programmable) Yes (8 outputs each with same reference potential) Inputs, total 12 Current input (fixed) 6 Current/voltage input 6 Measurement range of current inputs 0 ... 20 mA (parameterizable) 4...20 mA -30 ... +30 mA Measurement range of voltage input 0 ...10 V (parameterizable) -10...+10 V Input impedance, current 41.8 Ω Input impedance, voltage 100 kΩ Max. error (over the entire temperature range) 0.2% relative to full-scale value Resolution of A/D converter 13 bit + sign Conversion method Successive approximation Distributed I/O on the PROFIBUS AddFEM: Redundant distributed I/O module for fast response times Analog outputs (parameterizable) Outputs, total 8 Current output range 0...20 mA (500 Ω) Unipolar 4...20 mA (500 Ω) Current output range ±20 mA (500 Ω) Bipolar ±50 mA (300 Ω) Max. error (over the entire tempera- 0.4% ture range) Resolution of A/D converter 13 bit + sign Counting pulse input (parameterizable) Number of inputs 3 Type of input Type 1/2 compliant with IEC 1131-2 Voltage range ±33 V DC 0-signal level -28...+3V 1-signal level +8...+28V Load 1...3 kΩ Input frequency (fin ) 0 ... 20 kHz Counter resolution 1/60,000 referred to measured value Updating interval 2 ms Digital inputs with time tagging: AddFEM SoE Quantity 31 Time resolution 1 ms Position controller: AddFEM PoCo Quantity 8 Cycle time 2 ms Approvals/identifications UL Recognition Mark Underwriters Laboratories (UL) compliant with Standard UL 508 File E 85972 CSA Certification Mark Canadian Standard Association (CSA to Standard C22.2 No. 142 File LR 63533) CE marking Compliant with EU directive 89/336/EEC "Electromagnetic compatibility" Quality assurance According to ISO 9001 Siemens ST PCS 7.1 · September 2005 7/7 7
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simatic PCS 7 Add-ons for the SIMAT
Page 3 and 4: SIMATIC Add-ons for the SIMATIC PCS
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Page 23 and 24: Industry-specific software 4/2 CEMA
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Page 45 and 46: ■ Overview The Standard Chemical
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Page 59 and 60: Simulation 8/2 Introduction 8/3 SIM
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Page 91 and 92: Appendix 14/2 A&D Online Services 1
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Page 99 and 100: ■ Appendix Siemens ST PCS 7.1 ·
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Catalog ST PCS 7.1 - September 2005

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