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GHM Martens TB225, Operating Manual, Page: 1 / 36

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Translation of the original German version. In questions of 
technical incorrectness or wrong translations, please refer to 
the german version. 
 
Save for later reference.

 

 

 

English 

Company / brands of GHM 

 

www.ghm-group.de 

Operating manual

 

 

Temperature limiter/ 
Temperature monitor

 

TB225 

Approved in accordance with: 

DIN EN 14597 (replacing DIN 3440) 
SIL 2 (optional) 

 

Option: 

Summary of Contents for Martens TB225

Page 1: ...tness or wrong translations please refer to the german version Save for later reference English Company brands of GHM www ghm group de Operating manual Temperature limiter Temperature monitor TB225 Approved in accordance with DIN EN 14597 replacing DIN 3440 SIL 2 optional Option ...

Page 2: ...echanical assembly 7 3 2 Electrical installation 8 3 3 Connection diagram 9 4 Controls and functional description 10 4 1 Basic operation of the TB225 10 4 2 Menu structure and parameter overview 12 4 3 Display menu 13 4 4 Input menu 16 4 5 Output menu 18 4 6 Function menu 22 4 7 Error messages 25 5 Functional Safety 26 6 Function Test 27 7 Commissioning maintenance and service 28 7 1 Commissioning...

Page 3: ...o SIL with the option SIL chosen by ordering code General safety instructions use This operating manual must be kept in a location such that qualified personnel can refer to it at all times Any processes described in this operating manual may only be carried out by trained qualified personnel who are authorized by the owner and wearing protec tive clothing All rights reserved 1 1 Safety signs and ...

Page 4: ...ely ruled out Therefore we cannot assume any guarantee for complete conformity The speci fications in this document are checked regularly and any necessary corrections are incorporated into subsequent versions This document is subject to technical changes In addition all claims are based on the valid Standard Terms for the Supply of Products and Services of the Electrical Industry GHM Messtechnik ...

Page 5: ...using an external switch or external voltage 2 1 Scope of delivery TB225 this operating manual further documents if applicable 2 2 Functional principle The connected temperature signal is evaluated and monitored If the permissible threshold is reached or an error occurs within the permissible temperature range sensor break sensor short circuit failure of a component in the device error in the soft...

Page 6: ...V 24 V 20 V Grafikdisplay Tasten Analog Digital Analog Digital Microcontroller Relais 1 Relais Voralarm Relais Voralarm Relais 1 Analogausgang Netzteil Eingang 1 Eingang 2 Ext Taster Eingang 3 Analog Digital Analog Digital Terminals for auxiliary voltage and switch outputs Type plate Connection for analogue output and ext button Connection for temperature sensor Fig 1 Temperature limiter TB225 Fig...

Page 7: ...Type and article name Technical data Serial number bar code 3 Assembly and installation 3 1 Mechanical assembly Carrier rail mounting TS35 DIN EN 60715 The mounting of multiple devices without spaces is only permitted on horizontally mounted carrier rails Fig 3 Type plate Fig 4 ...

Page 8: ...ge is connected at Connections 11 and 13 of the plug in termi nal strip Terminals 41 44 are for the universal inputs of the TB225 The 2 switch outputs are available at Connections 21 23 main relay and 31 33 alarm relay The active analogue output is provided at Terminals 63 and 64 it switches between current and voltage signal depending on the resistance For the external resetting of the TB225 in t...

Page 9: ...9 3 3 Connection diagram Fig 5 Connection ...

Page 10: ... first after the TB225 is switched on The Reset menu Fig 7a and 7b and the peak value buffer Fig 8 can be opened by briefly pressing the middle button For a reset the upper arrow key must be pressed until the bar has reached its full length Along with the operating mode the operating level provides information about the threshold of the safety function as well as the measured temperature and the s...

Page 11: ...enu item has a black background The actuated selection is opened by pressing the centre button The back parameter takes you back up one level If no buttons are pressed for 2 minutes the system automatically returns to the operating level By pressing the middle button for 2 seconds you can also exit the menu again The main menu is divided into the following submenus Back Display Input Output Functi...

Page 12: ...ction 1 5 Lighting Selection 1 6 Decimal place Selection 2 Input 2 1 Back Jump to 1st Menu level 2 2 Signal Selection 2 3 Start analogue input Number input C F 2 4 End analogue input Number input C F 3 Output 3 1 Back Jump to 1st Menu level 3 2 Analogue Selection 3 3 Start analogue output Number input C F 3 4 End analogue output Number input C F 3 5 Analogue output error Selection 3 6 Alarm relay ...

Page 13: ... parameters Back Unit Contrast Language Lighting Decimal place 4 3 1 Display menu Unit parameter The temperature unit C or F is specified with the Unit parameter Fig 10 Display menu Display back Dec point Unit Contrast Language Backlight Fig 11 Unit parameter Unit C F ...

Page 14: ...p de 14 4 3 2 Display menu Contrast parameter The Contrast parameter specifies the contrast setting of the display with a per centage between 0 and 100 4 3 3 Display menu Language parameter The Language parameter specifies the display language Fig 12 Contrast parameter Fig 13 Language parameter Contrast 50 Language deutsch english ...

Page 15: ...pecifies whether the temperature is displayed with or without a decimal place without no decimal place 0 0 one decimal place Auto The display lighting is automatically deac tivated after 2 min if the device is not oper ated On The display lighting is permanently acti vated Fig 14 Lighting parameter Fig 15 Decimal place parameter Backlight auto on Dec place without 0 0 ...

Page 16: ...uctor circuit Type J Double thermocouple Fe CuNi Type K Double thermocouple NiCr Ni Type S Double thermocouple Pt10Rh Pt Type N Double thermocouple NiCrSi NiSi 0 10V Analogue input 0 10V 2 10V Analogue input 2 10V 0 20mA Analogue input 0 20mA 4 20mA Analogue input 4 20mA Fig 16 Input menu Input back Signal Start AIn Ende AIn Fig 17 Signal parameter Warning 0 10 V and 0 20 mA must not be selected i...

Page 17: ...ed to the lower analogue value 0 2V and or 0 4mA 4 4 3 Input menu Analogue input end value parameter The Analogue input end value parameter is used to define the temperature which is assigned to the upper analogue value 10V and or 20mA Fig 18 Analogue input start value parameter Fig 19 Analogue input end value parameter An In St C 0 An In En C 100 ...

Page 18: ...eters Back Analogue output Start value scaling End value scaling Error behaviour analogue output Function alarm relay Alarm value Alarm hysteresis 4 5 1 Output menu Analogue output parameter The Analogue output parameter defines the control range of the analogue output Fig 20 Output menu Fig 21 Analogue output parameter Output back Al Rel Analog St AOut En AOut An Err Analog off 0 10V 2 10V 0 20mA...

Page 19: ...which 0 2V and or 0 4mA is output at the analogue output 4 5 3 Output menu Scaling end value parameter This parameter defines the corresponding temperature value at which 10V and or 20mA is output at the analogue output Fig 22 Scaling end value parameter Fig 23 Scaling end value parameter An O St C 0 An O En C 100 ...

Page 20: ... Output menu Alarm relay function parameter This parameter is used for the setting of the alarm relay function Analogue output setting Error behavior selection 0 20mA 22mA 0mA 4 20mA 22mA 3 6mA 0 10V 11V 0V 2 10V 11V 1 8V off Alarm relay permanently deactivated min Alarm relay is deactivated when the adjusted alarm value is undercut max Alarm relay is deactivated when the adjusted alarm value is e...

Page 21: ...r specifies the switching point of the alarm relay 4 5 7 Output menu Alarm hysteresis parameter The Alarm hysteresis parameter specifies the switching hysteresis of the alarm relay Fig 26 Alarm value parameter Fig 27 Alarm hysteresis parameter Alarmval C 20 Al Hyst C 1 ...

Page 22: ...on menu Operating mode parameter The Operating mode parameter sets the desired operating mode Maximum monitor Relay is deactivated when the adjusted threshold is exceeded Minimum monitor Relay is deactivated when the adjusted threshold is undercut TB max Temperature limiter maximum monitor TB min Temperature limiter minimum monitor TW max Temperature monitor maximum monitor TW min Temperature moni...

Page 23: ...f the safety function is set with this parameter 4 6 3 Function menu Hysteresis parameter The Hysteresis switching difference of the threshold of the safety function is set here Fig 30 Threshold parameter Fig 31 Hysteresis parameter Limitval C 20 Hyst Lim C 1 ...

Page 24: ...n function parameter 4 6 5 Function menu Temperature correction parameter An error of the measuring sensor can be corrected with this parameter off No function at Terminal 61 62 Reset Reset in temperature limiter operating mode Keylock Block of the entire button operation Parameter lock Block of the menu level only the operating level can be operated Fig 32 External button function parameter Fig 3...

Page 25: ...ce ex ceeded Check the sensor connection Internal Pt100 An error has occurred in the device please send the device to the manufac turer Connection TC Check the sensor connection Difference TC Check the sensor connection I In too high Check the input current I In too low Check the input current U In too high Check the input voltage U In too low Check the input voltage Internal voltage An error has ...

Page 26: ...d to use single thermocouples and set the inputs parallel by wire bridges If sepa rate sensor fittings are used they must be mounted directly next to each other so that both can reach the same temperature Fault and Error If there is an accident at the plant the cause must be eliminated immediately If the tem perature limiter TB225 is decommissioned the process must be secured in a different way If...

Page 27: ...t circuit A correct alarm function of the TB225 is given when the relay is deactivated and the contact takes the resting position the respective error in the display is displayed correctly as plain text the display lighting of the TB225 changes to red After the temperature has been changed back to the good range with the simulator a correct function of the TB225 is given when in the operating mode...

Page 28: ...re the monitoring circuit with an external fuse maximum 1 6 A medium inert When the internal fuse is detached the device must be sent to the fac tory for repairs 7 Commissioning maintenance and service 7 1 Commissioning 1 Ensure that the connection assignment takes place according to the connec tion diagram and matches the auxiliary voltage 2 Ensure that the terminals are firmly screwed in 3 After...

Page 29: ... 0 01 K Thermocouple Type J Fe CuNi 100 800 C Type K NiCr Ni 150 1200 C Type N NiCrSi NiSi 150 1200 C Type S Pt10RH PT 0 1600 C Integrated comparison position compensation Basic precision 0 3 1 Digit Temperature coefficient 0 01 K Analogue input 0 2 10V 0 4 20mA 0 10V and 0 20mA not permitted for temperature limiting Basic precision 0 2 1 Digit Temperature coefficient 0 01 K Output Switching outpu...

Page 30: ...hnik GmbH Kiebitzhörn 18 22885 Barsbüttel Germany Phone 49 40 670 73 0 info ghm group de www ghm group de 30 8 1 Mechanical design dimensions Connection terminals 11 14 21 24 31 34 Connection terminals 41 44 61 64 Fig 35 Dimensions ...

Page 31: ...fety temperature limiter STL50 Safety thermocouple TC293 TC296 Safety temperature sensor TR293 TR296 9 2 Troubleshooting Error Cause Remedy Nothing appears on the dis play Auxiliary voltage 18 V Check auxiliary voltage at Terminal 11 and 13 10 Device transport and storage Gentle and tension free packaging of the housing must be ensured for transport no machine wrapping of the package The device mu...

Page 32: ... data sheet for the measuring medium is affixed to the outside of the package if the device has come into contact with a critical substance 12 Disposal Separation by material and recycling of device components and pack aging must take place when the device is disposed of The valid legal regulations and directives applicable at the time must be observed The device may not be disposed of with househ...

Page 33: ...33 14 EC Certificate of Conformity ...

Page 34: ... Lighting auto 1 6 Decimal place without 2 2 Signal PT100 2 3 Start analogue input 0 C 2 4 End analogue input 100 C 3 2 Analogue off 3 3 Start analogue output 0 C 3 4 End analogue output 100 C 3 5 Analogue output error 11V 3 6 Alarm relay off 3 7 Alarm value 20 C 3 8 Alarm hysteresis 1 C 4 2 Operating mode TB max 4 3 Threshold 20 C 4 4 Hysteresis 1 C 4 5 External button function off 4 6 Temperatur...

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