Operating Instructions Edition 11/2005. Process monitoring Ex-barrier for Diagnostics Unit SITRANS DA400 7MJ2010-1AA. sitrans

Transcription

1 Operating Instructions Edition 11/2005 Process monitoring Ex-barrier for Diagnostics Unit SITRANS DA400 7MJ2010-1AA sitrans

2

3 Introduction 1 General safety instructions 2 SITRANS Process monitoring Ex-barrier for Diagnostics Unit SITRANS DA400 Operating Instructions Description 3 Connecting and commissioning 4 Maintenance and service 5 Technical specifications and dimension drawings 6 7MJ2010-1AA 11/2005 A5E

4 Safety Guidelines This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are graded according to the degree of danger. Danger indicates that death or severe personal injury will result if proper precautions are not taken. Warning indicates that death or severe personal injury may result if proper precautions are not taken. Caution with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken. Caution without a safety alert symbol, indicates that property damage can result if proper precautions are not taken. Notice indicates that an unintended result or situation can occur if the corresponding information is not taken into account. If more than one degree of danger is present, the warning notice representing the highest degree of danger will be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property damage. Qualified Personnel The device/system may only be set up and used in conjunction with this documentation. Commissioning and operation of a device/system may only be performed by qualified personnel. Within the context of the safety notes in this documentation qualified persons are defined as persons who are authorized to commission, ground and label devices, systems and circuits in accordance with established safety practices and standards. Prescribed Usage Trademarks Note the following: Warning This device may only be used for the applications described in the catalog or the technical description and only in connection with devices or components from other manufacturers which have been approved or recommended by Siemens. Correct, reliable operation of the product requires proper transport, storage, positioning and assembly as well as careful operation and maintenance. All names identified by are registered trademarks of the Siemens AG. The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner. Disclaimer of Liability We have reviewed the contents of this publication to ensure consistency with the hardware and software described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions. Siemens AG Automation and Drives Postfach NÜRNBERG GERMANY Order No.: A5E Edition 11/2005 Copyright Siemens AG Technical data subject to change

5 Table of contents 1 Introduction Purpose of this document Additional information General safety instructions General information Correct usage Laws and directives Qualified Personnel Measures Description Design How ex-barrier works Connecting and commissioning Connection safety information Connection Commissioning Maintenance and service Maintenance Servicing Technical specifications and dimension drawings Ex-barrier technical specifications Dimensional drawing of the ex-barrier Operating Instructions, 11/2005, A5E iii

6 Table of contents iv Operating Instructions, 11/2005, A5E

7 Introduction Purpose of this document These instructions contain all the information you need for commissioning and use of the exbarrier. It is aimed both at persons mechanically installing the device, connecting it electronically, configuring the parameters and commissioning it as well as service and maintenance engineers. 1.2 Additional information Information The contents of these instructions shall not become part of or modify any prior or existing agreement, commitment or legal relationship. All commitments on the part of Siemens AG are contained in the respective sales contract, which also contains the complete and solely applicable warranty conditions. These contractual warranty provisions are neither extended nor further limited by the information in the manual. The contents reflect the current state of technology at time of going to press. We reserve the right to make technical changes in the course of further development. Offices If you need more information or have particular problems that are not covered sufficiently in the operating instructions, contact your local Siemens office. You will find your local Siemens office on the Internet at: Click on "Contact" and select the town closest to you. Operating Instructions, 11/2005, A5E

8 Introduction 1.2 Additional information Product information The operating instructions are a constituent part of the enclosed CD of the diagnostics unit SITRANS DA400 "sitrans da ACOUSTIC DIAGNOSTICS" (order number A5E ) and are available on the Internet at: Click on "More Info" and "-> Instructions and Manuals". 1-2 Operating Instructions, 11/2005, A5E

9 General safety instructions General information This device left the factory free from safety problems. In order to maintain this status and to ensure safe operation of the device, please observe the safety information and warnings contained in these instructions. 2.2 Correct usage The device may only be used for the purposes specified in these instructions. Insofar as they are not expressly stated in these instructions, all changes to the device are the sole responsibility of the user. 2.3 Laws and directives The regulations of the test certification valid in your country are to be observed. Electrical connection in hazardous zones with explosive atmospheres The national directives and laws for hazardous areas valid in your country must be observed for electrical connection. For example, in Germany these are: Working reliability regulaton Directive for the installation of electrical systems in hazardous areas DIN EN (previously VDE 0165, T1) 2.4 Qualified Personnel "Qualified personnel" means those who are familiar with the installation, mounting, commissioning and operation of the product. They must have the following, appropriate qualifications for their activities: Training or instruction/authorization in operating and maintaining devices and systems according to the safety regulations for electrical circuits, high pressures and aggressive as well as hazardous media. For explosion-proof devices: Training or instruction/authorization in carrying out work on electrical circuits for hazardous systems. Operating Instructions, 11/2005, A5E

10 General safety instructions 2.5 Measures Training and instruction in maintenance and use of adequate safety equipment according to safety regulations. Should be trained in first aid. 2.5 Measures In the interests of safety, the following precautions must be observed: Warning "Intrinsically safe" type of protection Devices of the "intrinsically safe" type of protection lose their certification as soon as they are operated on circuits that do not correspond with the test certification valid in your country. Caution Electrostatic sensitive componentry This device contains electrostatic sensitive componentry. Electrostatic sensitive componentry may be destroyed by voltages that are undetectable to a human. Voltages of this kind occur as soon as a component or the electrical connections of componentry is touched by a person who is not grounded against static electricity. The damage to componentry as a result of overvoltage cannot usually be detected immediately. It may only become apparent after a long period of operation. 2-2 Operating Instructions, 11/2005, A5E

11 Description Design Design of the ex-barrier The printed circuit board of the ex-barrier is permanently connected to the mount. The housing is made of plastic. The screw terminals are directly accessible. The foot elements are suited for snapping open bearing rail NS 32 or NS 35/7.5. Figure 3-1 Design Operating Instructions, 11/2005, A5E

12 Description 3.2 How ex-barrier works 3.2 How ex-barrier works General information The ex-barrier contains intrinsically safe circuits. The intrinsically safe circuits serve the purpose of operating intrinsically safe components, such as the sensors, within areas with danger of explosion and of securely separating them from the non-hazardous area in which the SITRANS DA400 is located. Functional principle Ex-barriers limit the energy supplied from circuits that are not intrinsically safe to intrinsically safe amounts, so that an explosion in the area with danger of explosion is not caused by sparks or by thermal effects such as hot surfaces. The non-intrinsically-safe circuits are galvanically connected to the intrinsically safe circuits. The laws, regulations and guidelines applicable to the use or planned use of the product must be observed. Figure 3-2 Functional principle 3-2 Operating Instructions, 11/2005, A5E

13 Connecting and commissioning Connection safety information Warning Electrical connection in hazardous zones with explosive atmospheres Connection and commissioning involving areas with danger of explosion may only be carried out by personnel specially qualified for this task. The national regulations and laws for areas with danger of explosion valid in your country must be observed for electrical connection. For example, in Germany these are: Operational safety regulations. Directive for the installation of electrical systems in areas with danger of explosion DIN EN (previously VDE 0165, T1). The information on the accompanying EC-type examination certificate TÜV 05 ATEX 2917X must be observed. Warning Adverse ambient conditions The ex-barrier is constructed according to protection type IP20. Under adverse ambient conditions such as the presence of splashing water or dirt, the ex-barrier must be protected according to its protection type. Operating Instructions, 11/2005, A5E

14 Connecting and commissioning 4.1 Connection safety information Warning Explosion protection The ex-barrier may not be connected and operated in an area with danger of explosion, since some of its circuits are intrinsically safe, but others are not. Intrinsically safe and not intrinsically safe circuits are galvanically connected to each other. The ex-barrier, the SITRANS DA400 diagnostic unit and the sensor form one measuring unit. Only intrinsically safe sensors of type 7MJ2000-1B*00 may be connected. The ex-barrier is constructed so that the connection of intrinsically safe circuits for Zone 1 and of the EEx ib type of protection is possible. When interconnecting the non-intrinsically-safe input circuits In1 and In2 of the ex-barrier with non-intrinsically-safe devices, the maximum permissible supply voltage Um of these circuits must be observed. Warning Earthing The blue terminals (Out1 and Out2) of the ex-barrier are circuits in the "intrinsically safe" type of protection according to EN Only earth-free resources may be connected to these terminals (41, 42, 51, 52). It must be ensured that a potential equalization exists between the ex-barrier and the sensor; in other words, between the areas with and without a danger of explosion. The necessary connection for the potential equalization must be done with a cable shield on the earthing terminal (M4). The cross-section of the connection must be at least 4 mm² for one copper wire. This connection for the potential equalization must be secured to a high degree and be maintained according to the norm EN Sec /special case b. 4-2 Operating Instructions, 11/2005, A5E

15 Connecting and commissioning 4.2 Connection 4.2 Connection Introduction With the ex-barrier, you can connect two intrinsically safe sensors to the SITRANS DA400 diagnostic unit. Two ex-barriers are necessary to connect all four sensors to the SITRANS DA400 diagnostic unit. Procedure The procedure for connecting the ex-barrier is as follows: 1. Switch the SITRANS DA400 diagnostic unit off. 2. Connect the earth terminal of the ex-barrier with the potential equalization. 3. Connect the sensor to the potential equalization. 4. Connect the intrinsically safe circuits of the sensor to the blue output terminals Out1 and Out 2 of the ex-barrier. For Out1 and Out 2, these are terminals 41, 42, 51 and Connect the non-intrinsically-safe circuits of the SITRANS DA400 diagnostic unit Sens1 through Sens4 to the green input terminals In1 and In2 of the ex-barrier. For In1 and In2, these are terminals 22, 21, 32 and 31. Operating Instructions, 11/2005, A5E

16 Connecting and commissioning 4.2 Connection Figure 4-1 Earthing block diagram 4-4 Operating Instructions, 11/2005, A5E

17 Connecting and commissioning 4.3 Commissioning 4.3 Commissioning Precondition The ex-barrier must be properly connected. The ex-barrier and the sensor are properly connected with the potential equalization. Warning Earthing The ex-barrier and the sensor must be safely earthed before commissioning. Procedure Do the following to commission the ex-barrier, the SITRANS DA400 diagnostic unit and the sensor: 1. Check the outputs of the ex-barrier. They should not be short-circuited. 2. Check the potential equalization. 3. Check the maximum supply voltage Um of the SITRANS DA400 diagnostic unit. 4. Switch on the SITRANS DA400 diagnostic unit after performing these checks. Notice If one of the outputs is short-circuited, this can destroy the fuse of the ex-barrier. See also Connection (Page 4-3) Connection safety information (Page 4-1) Operating Instructions, 11/2005, A5E

18 Connecting and commissioning 4.3 Commissioning 4-6 Operating Instructions, 11/2005, A5E

19 Maintenance and service Maintenance No changes may be made to devices operated with intrinsically safe devices in areas with danger of explosion. Warning A defective ex-barrier may not be repaired for safety reasons. 5.2 Servicing Due to the design, no servicing is necessary. Operating Instructions, 11/2005, A5E

20 Maintenance and service 5.2 Servicing 5-2 Operating Instructions, 11/2005, A5E

21 Technical specifications and dimension drawings Ex-barrier technical specifications Field of application Input Operating conditions For the inherently safe supply of the acoustic sensors in Zone 1. When the sensors are used in the Ex-Zone, the ex-barrier between the acoustic diagnostic unit SITRANS DA400 and the sensor have to be set. A maximum of two sensors can be connected. Degree of protection as per EN IP20 Permissible ambient temperature C ( F) Construction Weight 115 g (0.254 lb) Housing material Plastic, polyamide Type of installation Installation on mounting rail NS 32 or NS 35/7.5 The diagnostic unit SITRANS DA400 and the exbarrier have to be used outside of the Ex-Zone. Connection Electrical Screw terminals 2.5 AWG28-12 Earthing Threaded terminal M4 Dimensions (W x H x D) 68 x 77 x 42 mm (2.68 x 3.03 x 1.65 inch) Connection data Terminal Max. series resistance Fuse nominal current Uz ±5 % In Out Ohm ma V Earth terminal - 4 x Certificates and approvals Explosion protection Intrinsic safety "i" TÜV 05 ATEX 2917 X Identifier II (2) G [EEx ib] IC Operating Instructions, 11/2005, A5E

22 Technical specifications and dimension drawings 6.2 Dimensional drawing of the ex-barrier See also How ex-barrier works (Page 3-2) 6.2 Dimensional drawing of the ex-barrier Figure 6-1 Dimensional drawing of the ex-barrier, dimensions in mm (inch) See also How ex-barrier works (Page 3-2) 6-2 Operating Instructions, 11/2005, A5E

23

24 A5E A5E Siemens Aktiengesellschaft Automation and Drives Process Instrumentation and Analytics KARLSRUHE GERMANY