Electronic-Key-System Manual Electronic-Key Adapter EKS and EKS FSA with Profibus-DP Interface Order No.
Manual EKS Electronic-Key Adapter Profibus-DP Table of contents 1 General notes...............................................................................................................................................4 1.1 Use of the manual..................................................................................................................................4 1.1.1 Explanation of symbols .........................................................................................................
Manual EKS Electronic-Key Adapter Profibus-DP 6.3 Connection of function earth................................................................................................................18 6.4 Connection of the switched outputs (for EKS FSA only) .....................................................................18 6.4.1 Connection example with enabling switch ...............................................................................19 6.4.2 Connection example without enabling switch ...........
Manual EKS Electronic-Key Adapter Profibus-DP 1 General notes 1.1 Use of the manual This manual describes the technical features and the function of the EKS Electronic-Key adapter EKS-A-IDX-G01-ST09/03 with Profibus-DP interface (order no. 084 800) as well as the version EKS-A-IDXA-G01-ST09/03/04, EKS For Safety Applications (EKS FSA, order no. 100 378). The complete evaluation and interface electronics are integrated in these units. 1.1.
Manual EKS Electronic-Key Adapter Profibus-DP 1.1.
Manual EKS Electronic-Key Adapter Profibus-DP The following requirements must be met for usage: f The data signal (channel LB) and the switched output LA1/LA2 (channel LA) must be polled by a safe downstream evaluation to suit the risk determined. The data wire (channel LB) is used to supply the information as to whether or not an Electronic-Key is inserted and which access rights are assigned to the Electronic-Key.
Manual EKS Electronic-Key Adapter Profibus-DP 2 Safety precautions Warning! The EKS Electronic-Key adapter is not a safety component in the sense of the machinery directive. Without additional precautions the EKS Electronic-Key adapter must not be used to provide a safety function, particularly if failure or malfunction of the unit could endanger the safety or health of persons in the operating area of a machine. On this topic pay particular attention to the sections Correct use (see section 1.
Manual EKS Electronic-Key Adapter Profibus-DP 3 Function 3.1 Functional description 3.1.1 Common functions of EKS Standard and version EKS FSA The EKS is used for access control and monitoring on controllers or parts of controllers for machine installations. Instead of passwords, coded Electronic-Keys are assigned. In this way unauthorized access to control and display systems is prevented to the greatest possible extent. The EKS uses a non-contact, inductive read/write identification system.
Manual EKS Electronic-Key Adapter Profibus-DP The connection to the system is made using the integrated Profibus-DP interface. The Electronic-Key adapter is connected to the field bus as a subscriber (DP slave) using a standard Profibus cable. The Electronic-Key adapter can thus also be used remotely from the controller, e.g. at assembly workstations. Setup and system integration can be realized very straightforwardly and quickly on the Electronic-Key adapter with Profibus-DP interface.
Manual EKS Electronic-Key Adapter Profibus-DP Each of the outputs is operated with diversity by a dedicated processor that switches off the outputs on removal of the Electronic-Key (see Figure Block diagram EKS FSA). Figure 3: Block diagram EKS FSA By separately evaluating channel LA and channel LB, the EKS FSA device can be used in conjunction with a safe evaluation in safety-related applications.
Manual EKS Electronic-Key Adapter Profibus-DP 4 Technical Data 4.1 Dimension drawing of Electronic-Key adapter For installation in a control panel you must provide a cut-out 33 mm x 68 mm according to DIN 43700. 4.1.1 Version EKS-A-IDX-G01-ST09/03 with Profibus-DP interface 70,5 Front panel cut-out acc. to DIN 43700 40 60,7 LED max. 4mm 76 67 DIP-switch 32 83 75 68 33 M4 8 1,5 sealing 8,5 32 51,5 4.1.
Manual EKS Electronic-Key Adapter Profibus-DP 4.2 Technical data, Electronic-Key adapter Attention! All the electrical connections must either be isolated from the mains supply by a safety transformer according to EN IEC 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent isolation measures. General parameters min. Housing Degree of protection according to EN 60529 Ambient temperature at UB = 24 V DC Mounting cut-out acc.
Manual EKS Electronic-Key Adapter Profibus-DP 4.3 Pin assignment 4.3.1 Socket, Profibus-DP 5 9 1 6 SUB-D socket 9-pin PIN 1 2 3 4 5 6 7 8 9 Housing Designation Not used Not used RxD/TxD-P CNTR-P DGND VP Not used RxD/TxD-N Not used Function earth Function (according to EIA RS-485) Transmit/receive data P, B-wire Direction detection signal for repeater Data ground Power supply DC +5 V for termination resistor plug Transmit/receive data N, A-wire Electrically connected to the housing 4.3.
Manual EKS Electronic-Key Adapter Profibus-DP 4.4 DIP switch settings The device address 0...126 (decimal) can be set using the DIP switches S1 to S7. The device address is given by the sum of the address values on each DIP switch. Write protection can be enabled using DIP switch S8. In this way the writing of data to the Electronic-Key read/write is prevented. Information! The settings are only applied when the power supply is switched on.
Manual EKS Electronic-Key Adapter Profibus-DP 4.6 Profibus-DP Specification for bus cables A cable specified as cable type A according to EN 50170 must be used for the bus connection: Parameter Cable structure Effective capacitance Characteristic impedance Loop impedance Core diameter Core cross-section Cable type A Two core twisted, screened ≤ 30 135 ... 165 (at a frequency of 3 ... 20 MHz) ≤ 110 > 0.64 > 0.34 Unit pF/m Ω Ω/km mm mm2 4.6.
Manual EKS Electronic-Key Adapter Profibus-DP 5 Mounting Warning! Mounting must be performed only by authorized personnel. Warning! To achieve the degree of protection IP 67, it is necessary to install the Electronic-Key adapter in a clean, flat metal plate at least 2 mm thick and to tighten the screws with a tightening torque of 0.25 ... 0.35 Nm. A suitable strain relief must be provided for the connection cables in order to avoid damage to the connection sockets or malfunctions.
Manual EKS Electronic-Key Adapter Profibus-DP 6 Electrical connection Electrical connection may only be performed by authorized personnel trained in EMC and with the device and wiring isolated. For use and operation as per the be used. requirements, a power supply for use in class 2 circuits must The Electronic-Key adapter is only allowed to be connected if it is electrically isolated. Otherwise the Electronic-Key adapter may be damaged.
Manual EKS Electronic-Key Adapter Profibus-DP 6.2 Connection of power supply (For information on pin assignment see section 4.3.2 Plug-in screw terminals for power supply) It is imperative that the following points are observed: f The connections must be made as appropriate to maintain EMC performance. f A power supply of suitable EMC performance must be used for the power supply. f Conductor cross-section maximum 1.5 mm². f Tighten the terminal screws on the plug to 0.22 Nm. 6.
Manual EKS Electronic-Key Adapter Profibus-DP 6.4.1 Connection example with enabling switch Figure 4: Principle of operation (illustration with selected operating mode and all parts in actuated position) 6.4.1.1 Description of the application example with enabling switch The danger area on a machine is secured with a fence. To make set-up work on the machine possible with the guard open, an EKS FSA system is integrated in conjunction with a control system, an enabling switch and a safety relay.
Manual EKS Electronic-Key Adapter Profibus-DP The switching contact LA1/LA2, in series with a switching contact on the enabling switch, is connected to the first input on the safety relay. The switching contact A100.0 is connected to the second input on the safety relay in series with the second switching contact on the enabling switch. The result is that these inputs on the safety relay are only enabled if f the EKS-FSA (switching contact LA1/LA2) and f the control system (switching contact A100.
Manual EKS Electronic-Key Adapter Profibus-DP 6.4.1.
Manual EKS Electronic-Key Adapter Profibus-DP 6.4.2 Connection example without enabling switch Figure 6: Principle of operation (illustration with selected operating mode and all parts in actuated position) 6.4.2.1 Description of the application example without enabling switch The danger area on a machine is secured with a fence. To make set-up work on the machine possible with the guard open, an EKS FSA system is integrated in conjunction with a control system and a safety relay.
Manual EKS Electronic-Key Adapter Profibus-DP The safety relay is de-energized without a time delay (stop category 0) and the machine movement is stopped if f the Electronic-Key is removed or f the machine control system cancels the enable state (switching contact A100.0 is opened). Note: The switching contact A100.0 is only allowed to be set if f the related Electronic-Key is inserted and f a suitable operating mode is selected. 6.4.2.
Manual EKS Electronic-Key Adapter Profibus-DP 6.4.2.
Manual EKS Electronic-Key Adapter Profibus-DP 7 Setup During setup proceed as follows: Check mounting and electrical connection are correct (see section 5 Mounting and section 6 Electrical connection). Set device address on the DIP switches on the Electronic-Key adapter (see section 4.4 DIP switch settings). Switch on power supply. After the power supply is switched on, the LED on the front of the Electronic-Key adapter illuminates red.
Manual EKS Electronic-Key Adapter Profibus-DP 8 Operation on the Profibus-DP The Profibus-DP is a standardized field bus for decentral peripherals. Communication between the ElectronicKey adapter (DP slave) and bus master is performed according to DIN EN 50170 Vol. 2. Data transfer rates from 9.6 kbps to 12 Mbps are supported. The Electronic-Key adapter automatically synchronizes itself to the data transfer rate of the bus master.
Manual EKS Electronic-Key Adapter Profibus-DP Read-only operation in conjunction with Electronic-Key read-only* (cyclic) Five bytes of Electronic-Key content are read cyclically. Data field size I/O area of bus master inputs / outputs 7 bytes Key content 5 bytes * The read-only transponder type can also be read using the Electronic-Key adapter with Profibus DP interface. However, we do not recommend using this transponder type in new installations.
Manual EKS Electronic-Key Adapter Profibus-DP 8.3 Configuration message After the parameters for the Electronic-Key adapter have been set, the bus master sends a configuration message. This message contains the configuration of the Electronic-Key adapter currently saved in the bus master. The Electronic-Key adapter compares the configuration message received with its own values. If the values match, the Electronic-Key adapter confirms the configuration. 8.
Manual EKS Electronic-Key Adapter Profibus-DP 8.6 Read/write operation in conjunction with Electronic-Key read/write 8.6.1 Reading the content of the Electronic-Key In read/write operation, following successful configuration, a transfer message with up to 128 bytes, depending on the parameters set, is continually transferred to the input area of the bus master during each bus cycle, i.e. the Electronic-Key adapter is read.
Manual EKS Electronic-Key Adapter Profibus-DP 8.6.2 Reading/writing any data areas Each time an Electronic-Key is inserted, the Electronic-Key user data area from byte no. 0 defined by the parameters via the GSD file is always transferred first from the EKS to the input area of the bus master. It is then possible to read or write any data area in the next step. This arbitrary area of the user data on the Electronic-Key is defined in the output area of the bus master.
Manual EKS Electronic-Key Adapter Profibus-DP 8.6.3 Reading the serial number The Electronic-Key read/write contains a unique 8-byte serial number. This number is written by laser during the Electronic-Key production process and can never be changed or deleted. The serial number is used for secure distinction of every single Electronic-Key. If you want to use the serial number, it is necessary to completely evaluate all 8 bytes. The serial number is appended to the freely programmable user data.
Manual EKS Electronic-Key Adapter Profibus-DP 9 Exclusion of liability Exclusion of liability under the following conditions: f if the device is not used for its intended purpose f non-compliance with safety regulations f if mounting and electrical connection are carried out by unauthorized personnel f if modifications are made 10 Service and repair f No servicing is required.
Manual EKS Electronic-Key Adapter Profibus-DP 13 Appendix The procedure described below is to be followed when reading or writing arbitrary data areas (see section 8.6.2). The bits for the read or write job in the command byte in the output area of the bus master must be actively set and also reset again by the application. 13.1 Timing diagram Figure 9: EKS timing diagram 13.1.1 Explanations Electronic-Key adapter ready The Electronic-Key adapter must basically be ready (see section 7 Setup).
Manual EKS Electronic-Key Adapter Profibus-DP Job in progress The job is now executed. The execution of the job is signaled automatically in the input area of the bus master in byte no. 0 (status byte) (see section 8.6.1) by the value 1 in bit no. 7. Once job execution has been started, bit no. 6 (read) or bit no. 7 (write) in byte no. 0 (command byte) in the output area of the bus master must be again reset to the value 0.
Manual EKS Electronic-Key Adapter Profibus-DP 13.3 Output area of the bus master Figure 11: Output area of the bus master, example based on SIMATIC S7 13.
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