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M-LB-(Ex-)2000-System – Surge Protection Barriers

Dismounting, Maintenance, and Repair

201

9-03

29

5.3

Dismounting

Dismounting the Insulation Spacer

Remove the insulation spacer (1) from the DIN mounting rail (2).

Figure 5.3

1

Insulation spacer M-LB-2800

2

DIN mounting rail

2

1

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Summary of Contents for M-LB 2000 Series

Page 1: ...ISO9001 3 M LB Ex 2000 System Surge Protection Barriers PROCESS AUTOMATION MANUAL ...

Page 2: ...y for Products and Services of the Electrical Industry published by the Central Association of the Electrical Industry Zentralverband Elektrotechnik und Elektroindustrie ZVEI e V in its most recent version as well as the supplementary clause Expanded reservation of proprietorship M LB Ex 2000 System Surge Protection Barriers ...

Page 3: ...orking Voltage 9 2 4 Surge Protection Barrier 10 2 5 Accessories 13 3 Installation 14 3 1 Mounting 14 3 2 Connection 18 3 3 Signal Loops Disconnection for Checking 23 4 Operation 25 5 Dismounting Maintenance and Repair 26 5 1 Signal Loops Disconnection for Checking 26 5 2 Disconnection of the Circuits 26 5 3 Dismounting 29 6 Technical Specifications 31 6 1 Technical Data 31 6 2 Model Number Descri...

Page 4: ...le EU type examination certificate EU declaration of conformity Attestation of conformity Certificates Control drawings Additional documents 1 2 Target Group Personnel Responsibility for planning assembly commissioning operation maintenance and dismounting lies with the plant operator Only appropriately trained and qualified personnel may carry out mounting installation commissioning operation mai...

Page 5: ...ages are displayed in descending order as follows Informative Symbols Action This symbol indicates a paragraph with instructions You are prompted to perform an action or a sequence of actions Danger This symbol indicates an imminent danger Non observance will result in personal injury or death Warning This symbol indicates a possible fault or danger Non observance may cause personal injury or seri...

Page 6: ... applications Protection of 2 signal lines Protection of grounded or not grounded signal lines Protection of intrinsically safe or non intrinsically safe circuits Protection of circuits with rated voltage of 1 V or 24 V A big advantage of using the M LB Ex 2000 surge protection system is that the devices are only 6 2 mm thick This means that the space in the switch cabinet can be optimally used Th...

Page 7: ... 21 and 22 The system components suitable for this application are marked in blue Additional surrounding enclosure Protected electrical equipment Protected field device Field side Control side Surge protection barrier Surge protection barrier Isolator 24 V 2 1 7 8 9 250 Ω 11 12 Power Rail 24VDC 2 1 3 5 4 2 1 3 5 4 2 1 7 8 x3 Additional surrounding enclosure Protected electrical equipment Protected...

Page 8: ... signal lines 2 2 2 Surge Protection Barriers for Not Grounded Signal Lines Surge protection barriers for not grounded signal lines are connected with earth via a gas discharge tube only This results in a greater insulation voltage from line to earth Use these surge protection barriers if the device to be protected is operated in an unearthed signal loop Typical applications for this device are ga...

Page 9: ...nuous operating voltage UC 30 V DC The typical area of application for these surge protection barriers are 24 V signal loops such as 4 mA 20 mA digital inputs or digital outputs Rated voltage U 1 V DC maximum continuous operating voltage UC 6 V DC These surge protection barriers are optimized for applications with a small voltage increase in the mV range such as resistance thermometers thermocoupl...

Page 10: ...ounting rail according to EN 60715 The DIN mounting rail is used to attach the device in the switch cabinet and is responsible for grounding the surge protection barriers The DIN rail mounting ensures a grounding connection with the lowest possible resistance of the device Assembly Figure 2 6 Device assembly 1 Surge protection barrier M LB 21 with screw terminals and equipment protection level Gc ...

Page 11: ...ted module and on the operating location The connection terminals are screw terminals or spring terminals The terminals offer a terminal compartment for conductors with a maximum core cross section of 1 x 2 5 mm2 14 AWG The device is equipped with a ground connection C An optional shielding or grounding can be connected to terminal 1 D Figure 2 7 Device connections A Connection of the unprotected ...

Page 12: ... disconnect levers can be used to disconnect the signal loops for the following checks Insulation check of the cable on the unprotected side Check of the signal loops Figure 2 8 1 Disconnect lever 1 for terminal 3 2 Terminal 3 3 Disconnect lever 2 for terminal 2 4 Terminal 2 1 2 4 3 Note See corresponding datasheets for further information ...

Page 13: ...applications see chapter 3 1 for optical or structural separation of individual device series as the termination of a device series for closing the open side wall Figure 2 9 Insulation spacer M LB 2800 DIN Mounting Rail on the User Side The device is mounted on a 35 mm x 7 5 mm DIN mounting rail according to EN 60715 Figure 2 10 Example DIN mounting rail 35 mm x 7 5 mm Note See corresponding datas...

Page 14: ...unting the device in the wrong way can impair suitability for specific temperature class This can cause surface temperatures which can ignite a potentially explosive atmosphere Observe the derating of the current depending on the ambient temperature and the temperature class Danger Explosion hazard from wrong mounting of devices with equipment protection level Gc The device safety can be impaired ...

Page 15: ...tion Barrier Only use a 35 mm x 7 5 mm DIN mounting rail Clip the device 1 onto the DIN mounting rail 2 The device is fixed on the DIN mounting rail The grounding connection is established Figure 3 1 Mounting the device onto the DIN mounting rail 1 Surge protection barrier 2 DIN mounting rail 2 1 ...

Page 16: ... the insulation spacer 2 onto the DIN mounting rail 3 Figure 3 2 Mounting between the devices Figure 3 3 Mounting the insulation spacer onto the DIN mounting rail 1 Surge protection barriers 2 Insulation spacer M LB 2800 3 DIN mounting rail 4 Surge protection barriers 1 Insulation spacer M LB 2800 2 DIN mounting rail 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5...

Page 17: ...he insulation spacer as the termination of a device series 4 for closing the open side wall 2 Clip the insulation spacer 1 onto the DIN mounting rail 3 3 Secure the insulation spacer on the DIN mounting rail against shifting or falling over For example use terminal block USLKG5 2 Figure 3 4 Mounting as termination of a device series Figure 3 5 Mounting the insulation spacer onto the DIN mounting r...

Page 18: ... the absence of a potentially explosive atmosphere Danger Danger to life from electric shock Absent or insufficient insulation can result in electric shock Only connect circuits that provide protection against electric shock e g SELV or PELV Danger Danger to life from incorrect installation Incorrect installation of cables and connection lines can compromise the function and the electrical safety ...

Page 19: ... 0 5 Nm to 0 6 Nm Figure 3 6 Screw terminal connection Connecting the Cable via the Spring Terminal 1 Push the cable B into the terminal on the device A 2 Check that the cable B is fixed Figure 3 7 Spring terminal connection with push in connection technology A Device with screw terminals B Slot head screwdriver C Cable 5 4 3 2 1 A B C 6 5 4 3 2 1 A Device with spring terminals with push in connec...

Page 20: ...a sufficient distance between the unprotected cabling connected to earth and the protected cabling The following figures show examples of incorrect or correct ground connections Correct Ground Connection Figure 3 8 1 Unprotected side 2 Protected side 3 Surge protection barriers 4 Insulation spacer 5 DIN mounting rail 6 Earth connection 7 Equipotential bonding 8 Terminal block USLKG5 1 2 3 4 5 6 1 ...

Page 21: ...ncorrect Ground Connection Figure 3 9 1 Unprotected side 2 Protected side 3 Surge protection barriers 4 Equipotential bonding 5 Earth connection 6 DIN mounting rail 7 Terminal block USLKG5 8 Insulation spacer 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 4 5 3 1 6 8 7 2 ...

Page 22: ...ncorrect Ground Connection Figure 3 10 1 Unprotected side 2 Protected side 3 Surge protection barriers 4 Insulation spacer 5 DIN mounting rail 6 Earth connection 7 Equipotential bonding 8 Terminal block USLKG5 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 7 5 8 4 3 1 2 6 ...

Page 23: ...erminal 3 lift disconnect lever 1 3 until the lever reaches its end position 3 To disconnect the protected side on terminal 2 lift disconnect lever 2 2 until the lever reaches its end position Figure 3 11 Danger Explosion hazard from sparking when using operating elements on devices with equipment protection level Gc Using operating elements in a potentially explosive atmosphere can cause sparks t...

Page 24: ...2019 03 24 M LB Ex 2000 System Surge Protection Barriers Installation Connecting the Signal Loops Lower the disconnect levers again after testing is complete Figure 3 12 1 3 2 ...

Page 25: ...tmosphere Only connect or disconnect energized non intrinsically safe circuits in the absence of a potentially explosive atmosphere Danger Explosion hazard from sparking when using operating elements on devices with equipment protection level Gc Using operating elements in a potentially explosive atmosphere can cause sparks that can ignite the surrounding atmosphere Only use operating elements e g...

Page 26: ...ged or repaired devices Using a defective or repaired device can compromise its function and its electrical safety Do not use a damaged or polluted device The device must not be repaired changed or manipulated If there is a defect always replace the device with an original device from Pepperl Fuchs Caution Property damage from use of inappropriate tool Using an inappropriate tool may damage the ho...

Page 27: ...019 03 27 Remove the Cable from the Screw Terminal 1 Loosen the screw of the terminal with the slot head screwdriver B 2 Pull the cable C out of the terminal Figure 5 1 Screw terminal connection A Device with screw terminals B Slot head screwdriver C Cable 5 4 3 2 1 A B C 6 5 4 3 2 1 ...

Page 28: ...t head screwdriver B into the terminal on the device A 2 Pull the cable C out of the terminal Figure 5 2 Spring terminal connection with push in connection technology A Device with spring terminals with push in connection technology B Slot head screwdriver C Cable 5 4 3 2 1 B C A 6 5 4 3 2 1 Note See corresponding datasheets for further information ...

Page 29: ...tion Barriers Dismounting Maintenance and Repair 2019 03 29 5 3 Dismounting Dismounting the Insulation Spacer Remove the insulation spacer 1 from the DIN mounting rail 2 Figure 5 3 1 Insulation spacer M LB 2800 2 DIN mounting rail 2 1 ...

Page 30: ...g the device 1 Insert the screwdriver 2 into the groove of the mounting bracket 3 2 Press the screwdriver 2 in the specified direction until the lock on the DIN mounting rail 4 opens see figure 3 Remove the device 1 from the DIN mounting rail 4 Figure 5 4 Dismounting the device from the DIN mounting rail 1 Device 2 Slot head screwdriver 3 Mounting bracket 4 DIN mounting rail 2 4 3 1 ...

Page 31: ...C 40 F to 185 F Relative humidity Max 95 without condensation Mechanical Data Mounting Mounting the device on 35 mm DIN mounting rail according to EN 60715 Horizontal or vertical side by side mounting Housing material Polyamide PA Dimensions For dimensional drawings see chapter 6 3 Degree of protection IP20 in accordance with EN 60529 after appropriate installation Connection Rigid cable core cros...

Page 32: ...r connection of non intrinsically safe circuits Ex For connection of intrinsically safe circuits Position 4 2 Nominal discharge current 5 kA DIN mounting rail mounting one piece Position 5 1 Surge protection barrier 8 Insulation spacer Position 6 0 Not specified 1 Nominal voltage 1 V DC 4 Nominal voltage 24 V DC Position 7 0 Not specified 2 2 protected signal lines non grounded 4 2 protected signa...

Page 33: ...Figure 6 1 Dimensions of M LB Ex 21 surge protection barrier with screw terminals Figure 6 2 Dimensions of M LB Ex 21 SP surge protection barrier with spring terminals Figure 6 3 Dimensions of M LB 2800 insulation spacer 1 2 3 4 5 6 6 2 67 4 72 4 93 1 2 3 6 5 4 6 2 93 67 4 72 4 93 65 8 70 6 76 7 2 ...

Page 34: ...erl fuchs com Worldwide Headquarters Pepperl Fuchs GmbH 68307 Mannheim Germany Tel 49 621 776 0 E mail info de pepperl fuchs com For the Pepperl Fuchs representative closest to you check www pepperl fuchs com contact PROCESS AUTOMATION PROTECTING YOUR PROCESS DOCT 6222 03 2019 ...

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