(Safety) Temperature limiter (Safety) Temperature monitor B
Contents
1. u 2442444 RR nennen DIMENSIONS 2 laa aaa Mounting on a standard rail es A ee ehr REMOVA ul a Electrical connection Installation notes oooccoonncnconocnncnoncnononancnnnonanncnonanonononcnnnns Connection diagram nn ee nen Lead compensation siciliana Function Indication and controls occcooncnccconoccncncncnnnnonanononaconononanones O TUNCTION dba S function ina Starting up Functional test TSESUISQUGNCY rr a Testing STBs and STWs with O function when thermocouples are connected ooconcnnccncccconannnncnnno Testing STBs and STWs with S function when thermocouples are connected ooconcnnccncccconannnncnnnn Testing STBs and STWs with O or S function when connecting resistance thermometers Test in the event of a fault Technical data 25 1 Introduction 1 1 Description The areas of application for safety temperature limiters or monitors S TB or S TW are to be found wherever thermal processes have to be monitored and where the system must be set to a safe oper ating condition in the event of a fault If the permitted temperature limit is reached or a fault occurs within the permitted temperature range probe break short circuit component defect power failure then the instrument switches off without delay If the fault is no longer present then TB and STB must be reset manually This can be done by means of a reset pushbutton on the instrument or by an external reset bu2. Inductive components in the neighbourhood of the instrument such as contactors or solenoid valves must have RC combinations fitted for interference suppression The approval of the instrument to DIN 3440 is only valid if the temperature probes marked with in Chapter 8 Technical Data are used If temperature probes are used which are not marked or listed then the approval of the instrument and probes must be checked 12 3 Electrical connection 3 2 Connection diagram A The electrical connection must only be carried out by qualified personnel 2 wire circuit LAW Lead compensation resistor Connection for Terminals Relay output 7 common 8 n o make 230V 2A 9 n c break resistive load Supply L1 line as on label N neutral External reset 5 pushbutton 6 Resistance 1 1 2 thermometer in 2 Thermocouple RON 1 1 Thermocouple 1 Thermocouple 2 13 3 Electrical connection 3 3 Lead compensation A lead resistance of 0 50 is allowed for internally as standard 10 10 300 or 500 extra Code to special order A lead compensation resistor LAW 10 Q included in the delivery package when the appropriate extra Code is ordered is required for the connection to Pt 100 resistance thermometers with a max operating temperature of 700 C Measurement circuit with internal comp for lead resistance R 050107100 30 Q or 50 Q Compensa
3. Safety Temperature limiter Safety Temperature monitor to DIN 3440 B 70 1130 Operating Instructions Version 1 8 98 00354358 Conformance symbol The instrument conforms with the requirements of DIN 3440 I cumo E MESS UND REGELTECHNIK DIN 3440 SACHSEN ANHALT ES If any servicing is required the instrument must be returned to the main factory In accordance with the recommendations of Germanische Lloyd specific applications require the availability of a replacement instrument Please read these Operating Instructions before commissioning the instrument Keep the operating instructions in a place which is accessible to all users at all times Please assist us to improve these operating instructions where necessary We are always grateful for your suggestions Phone in Germany 06 61 6003 727 from abroad 49 661 6003 0 Fax in Germany 06 61 60 03 5 08 from abroad 49 661 6003 607 Should any difficulties arise during start up you are asked not to carry out any unauthorised mani pulations on the instrument You could endanger your rights under the warranty Please contact the nearest JUMO office or the main factory 1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4 3 1 3 2 3 3 4 1 4 2 4 3 6 1 6 2 6 3 6 4 Contents Introduction Description sen Block Structfe cui ke Type designation nase ee Registration Number es Installation Location and climatic conditions
4. Switching differential Xgg Satisfactory range OFF Limit value G Response in normal operation gt G temperature falls gt the relay drops out at U UG Response after falling below the limit U lt UG temperature rises gt the relay pulls in automatically at G Xsa STW and TW or has to be reset manually STB and TB Response in fault condition In the event of a fault probe break short circuit faulty electronics supply failure the relay drops out When the fault has been cleared D0G Xsd gt then the relay pulls in automatically STW and TW STB and TB must be reset manually Only in the event of a short term power failure lt 1 min in the satisfactory range of the system will the instrument automatically be enabled after the power has been restored 17 5 Starting up The setting of the limit value must not change by itself under operating conditions A clear cover which is lead sealable is therefore provided to prevent unintentional or unauthorised adjustment Swing the clear cover upwards and remove it Set the required limit on the scale using the limit setting knob The limit setting can easily be read even when the clear cover is in position The start and end of the range are fixed by stops After setting the limit carry out the function test gt Chapter 6 and lead seal the clear cover CS The safety circuit must be reset after
5. 1 96 creepage distances mains to electronics and probe gt 8mm mains to relay gt 3mm relay to electronics and probe gt 8mm Instrument can be connected to SELV circuits 30 8 Technical data Test voltages to EN 60730 1 96 Tab 13 2 Electromagnetic compatibility to EN 50081 1 EN 50082 2 Ambient conditions to EN 60730 1 96 Para 2 12 6 normal Operating conditions The instrument is designed as a built in device according to VDE 0160 5 5 1 3 5 88 VDE 0106 Part 100 3 83 Operating position unrestricted Weight 250g approx Dimensions WxHxD 54mm x 70mm x 110mm Casing Plastic Combustibility class VO With extra Code GL The instrument meets Application Category C according to the GL guideline Temperature 0 to 55 C Rel humidity not exceeding 100 r H Vibration not exceeding 0 7g Standard accessories Operating Instructions B 70 1130 2 fixing elements only for GL version LAW only with extra Code 229 231 233 235 31 MEASUREMENT AND CONTROL M K JUCHHEIM GmbH amp Co United Kingdom USA 36035 Fulda JUMO Instrument Co Ltd JUMO PROCESS CONTROL INC Germany Temple Bank Riverway 735 Fox Chase Phone 49 6 61 60 03 0 GB Harlow Coatesville PA 19320 Fax 49661 6003 607 Essex CM20 2TT Phone 610 380 8002 Telex 49701 juf d Phone 0 12 79 63 55 33 800 554 JUMO email JUMO_de e mail com Fax 0 12 79 63 5262 Fax 610 380 8009
6. Short circuit the reset button Simulate a probe short circuit O The LEDs S1 and S2 must light up O The LEDs S1 and S2 must go out after approx 5 sec Remove short circuit across the external reset button O The LEDs S1 and S2 light up again Remove the probe short circuit O If the probe temperature is within the permitted temperature range i e below the limit setting by the switching differential for an O function or above the limit setting by the switching differential for an S function then the two LEDs S1 and S2 must go out after approx 5 sec O For an STW the external fault indication must go out and the safety circuit must close 26 6 Functional test O For an STB the external fault indication must continue to be lit up and the safety circuit must remain open It is only closed again when the reset button is pressed Check response after a power failure STB In the satisfactory range of the system Switch off mains O Wait approx 1 min Switch on mains O The LEDs S1 and S2 must light up for approx 5 sec and then go out O The external fault indication must go out after approx a fur ther 2 sec and the safety circuit must close automatically In the event of a fault Simulate a probe break O The LEDs S1 and S2 must light up Remove the probe break O The LEDs S1 and S2 must go out after approx 5 sec O The safety circuit remains open Switch off mains for at least 5 sec Switch on
7. be reset either manually or by means of a tool when the probe temperature has fallen below the limit value by the amount of the switching differential Safety temperature limiter STB Safety temperature limiters are temperature limiters which in addi tion comply with the requirements for enhanced safety according to DIN 3440 Extract from DIN 3440 1 2 Block structure Input 9 Fault indicator O 8 System 1 Introduction 1 3 Type designation 701130 1 2 3 4 kx x kx kk kk 1 Basic type extensions 0151 Temperature monitor with O function 0152 Temperature monitor with S function 0153 Temperature limiter with O function 0154 Temperature limiter with S function 0251 Safety temperature monitor with O function 0252 Safety temperature monitor with S function 0253 Safety temperature limiter with O function 0254 Safety temperature limiter with S function 2 Measurement inputs 001 Resistance thermometer Pt100 in 2 wire circuit 037 W3Re W25Re 042 Fe Con L 043 NiCr Ni K 044 Pt10Rh Pt S 046 Pt30Rh Pt6Rh B 1 Introduction 3 Supply 02 230V AC 10 15 48 63Hz 05 115V AC 10 15 48 63Hz 08 24V AC 10 15 48 63Hz 4 Extra Codes 202 Switching differential 3 C only for Pt100 205 Switching differ
8. every switch on or break in the mains supply by using the internal or exter nal reset button only for TB and STB Only in the event of a short term power failure lt 1 min in the satisfactory range of the installation will the instrument automatically be enabled after the power has been restored For lead sealing a hole is pro vided on each side of the clear cover A wire is passed through these holes to connect the cover and the casing The wire ends are secured by a lead seal 18 6 Functional test 6 1 Test frequency The safety temperature monitors and limiters fulfil the requirements made in Draft DIN 3440 A1 of September 1991 In addition the instrument must undergo an annual functional test ES Generally the functional test always starts from the sat isfactory range of the system i e the fault signal diodes must not be lit up and the STBs must be reset It is necessary to short circuit or open the measurement input cir cuit s for the functional test The reset button must also be short circuited during the test For a rapid functional test it is therefore recommended that the but tons Il and Ill are included in the measurement or reset circuits ES When connecting themocouples and buttons it is impor tant to ensure that no additional thermal e m f occurs temperature differences at the terminals When resistance thermometers and buttons are con nected it must be ensured that the contact r
9. mains O Wait for approx 1 min Switch on mains O The LEDs S1 and S2 must light up for approx 5 sec and then go out O The external fault indicator must go out after a further 2 sec approx and the safety circuit must close automatically In the event of a fault Simulate a probe break of the thermocouple 1 O The LEDs S1 and S2 must light up Remove the probe break of thermocouple 1 O The LEDs S1 and S2 must go out after about 5 sec O The safety circuit remains open 21 6 Functional test Switch off mains for at least 5 sec Switch on mains O The LEDs S1 and S2 must light up for about 5 sec and then go out O The external fault indication continues to be lit up and the safety circuit remains open The safety circuit will only close again and the external fault indication will go out when the reset button is pressed 6 3 Testing STBs and STWs with S function when thermocouples are connected safety external Li N circuit fault 230 indicator ie external ah reset button 1 probe 2 22 6 Functional test Short circuit the reset button Simulate a probe short circuit of thermocouple 1 O O O O The LEDs S1 and S2 must light up The external fault indication must light up The safety circuit must be open LEDs S1 and S2 must go out after approx 5 sec The external fault indication remains lit and the safety circuit remains open Remove short
10. the fixing elements into the guides on the sides Insert the unit from above into the rail and swing it down until it snaps into position as above Push the fixing elements up to the rail and tighten them evenly with a spanner see diagram on next page 10 2 Installation 2 4 Removal Insert a screwdriver in the direction of the arrow under the clip Press the clip down and swing the unit up at the same time 11 3 Electrical connection 3 1 Installation notes HM The requirements of VDE 0100 Regulations for the installation of power equipment with rated voltages up to 1000V or the equivalent national regulations must be observed in the choice of cable material the installation and the electrical connection of the equipment The electrical connection must only be made by properly qualified personnel Isolate the instrument on both poles from the supply if there may be contact with live parts during work The electromagnetic compatibility EMC conforms to the standards and regulations listed under Technical Data gt Chapter 8 Sensor output or supply cables should be routed separately from one another and not laid in parallel Sensor cables must be twisted and shielded Avoid running them close to current carrying components or cables Do not connect any additional loads to the supply terminals of the instrument The instrument is not suitable for installation in hazardous areas
11. circuit of reset button O O The LEDs S1 and S2 light up again The external fault indication remains on Remove probe short circuit O If the probe temperature is within the permitted temperature range i e above the limit setting by the switching differential then the two LEDs S1 and S2 must go out after approx 5 sec For an STW the external fault indication must also disappear and the safety circuit must close For an STB the external fault indication must continue to be lit up and the safety circuit must remain open It will only close again when then reset button is pressed Repeat the procedure for thermocouple 2 Check the response after power failure STB only In the satisfactory range of the system Switch off mains O Wait for approx 1 min Switch on mains O The LEDs S1 and S2 must light up for approx 5 sec and then go out 23 6 Functional test O The external fault indication must go out after a further 2 sec approx and the safety circuit must close automatically In the event of a fault Simulate a probe short circuit of thermocouple 1 O The LEDs S1 and S2 must light up Remove the probe short circuit of thermocouple 1 O The LEDs S1 and S2 must go out after approx 5 sec O The safety circuit remains open Switch off mains for at least 5 sec Switch on mains O The LEDs S1 and S2 must light up for approx 5 sec and then go out O The external fault indication con
12. ential 10 C 206 Switching differential 30 C 208 Switching differential 100 C 229 Lead resistance 1Q internally compensated 231 Lead resistance 100 internally compensated 233 Lead resistance 30Q internally compensated 235 Lead resistance 50Q internally compensated 245 Internal reset button extra Code with TB only 062 GL Lead compensation resistor LAW 10Q is included in the delivery Accessories External reset button RT Sales No 70 97097865 Mounting plate BS Sales No 70 000591 72 Lead compensation resistor LAW 10Q Sales No 70 00322800 1 4 Registration number For Type 701130 TB TW STB STW 1091 97 2 Installation 2 1 Location and climatic conditions The location and the climatic conditions must meet the requirements defined in the specifications under Technical Data Chapter 8 2 2 Dimensions 7 110 119 5 Dimensions with lateral fixing elements only for GL version mm inch 33 1 30 49 1 93 51 2 01 54 2 13 66 6 2 62 PERE 70 2 76 MY A 119 5 4 70 2 Installation 2 3 Mounting on a standard rail or a mounting plate The instruments are designed as built in units and are protected to IP20 as standard Insert the instrument from above into the standard rail or into the cut out of the mounting plate and swing it down until it snaps into position Mounting the GL version Push
13. esistance is not too high 0 4Q 1 C error o Carry out a functional test after every malfunction 19 6 Functional test 6 2 Testing STBs and STWs with O function when thermocouples are connected safety external Li N circuit fault 230V indicator Lenna external reset button 1 probe 2 Short circuit the reset button Simulate a probe break of thermocouple 1 O The LEDs S1 and S2 must light up O The external fault indicator must light up The safety circuit must be opened O The LEDs S1 and S2 must go out after about 5 sec O The external fault indicator remains lit up and the safety cir cuit remains open 20 6 Functional test Remove the short circuit across the reset button O The LEDs S1 and S2 light up again O The external fault indicator remains on Remove the probe break O If the probe temperature is within the permitted temperature range e below the limit setting by the switching differential then the two LED S1 and S2 must go out after approx 5 sec O For an STW the external fault indication must also disappear and the safety circuit must close O For an STB the external fault indication must continue to be lit up and the safety circuit must remain open The safety cir cuit is only closed again when the reset button is pressed Repeat the procedure for thermocouple 2 Check response on power failure STB In the satisfactory range of the system Switch off
14. mains O The LEDs S1 and S2 must light up for approx 5 sec and then go out O The external fault indication continues to be lit up and the safety circuit remains open Only when the reset button is pressed will the safety circuit close and the external fault indication go out 27 7 Test in the event of a fault In the event of a system fault the instrument switches off the sys tem This condition is indicated by LED S1 lighting up S1 and S2 on instruments with enhanced safety The fault is signalled simulta neously by the external fault indication In this condition the relay of the temperature limiting device STB TB STW TW is not operated Initial condition STB has switched off the system Fault indicators are lit Fault indicators are off The fault is still present in the system over undertemperature probe break short circuit Press the reset button at least 5 sec until S1 and S2 go out If the safety circuit remains open the system and the probe circuit have to be checked Press the reset button If the instrument remains inhib ited after pressing the reset button the replacement instru ment must be installed and the functional test carried out 28 8 Technical data Inputs Resistance thermometer Pt100 in 2 wire circuit 0 120 C 0 300 C 0 400 C 0 600 C 200 500 C Ambient temperature error 0 8 C 10 C Lead compensation A lead resis
15. tance of 0 5Q is allowed for internally as standard 10 109 30Q or 50Q on request A lead compensation resistor LAW 100 is required for connection to resistance thermometers with a max operating temperature of 700 C Double thermocouples NiCr Ni K 200 600 C 400 800 C 600 1000 C 800 1200 C Pt10Rh Pt S 400 800 C 800 1200 C 1000 1400 C 1200 1600 C Pt30Rh Pt6Rh B 800 1200 C 1000 1400 C 1200 1600 C 1400 1800 C Fe Con L 50 450 C 200 600 C 500 900 C W3Re W25Re 1600 2000 C Ambient temperature error 2 0 C 10 C For temperature probes used in accordance with DIN 3440 the max limit temperature of the instrument is determined by the upper meas temperature of the selected temperature probe 29 8 Technical data Outputs Relay with floating changeover contact Switching capacity 2 A 230 V AC resistive load protected by fuse 2A M Contact life 100 000 switching operations at rated load General data Switching point accuracy 2 of span Switching differential 3 C for Pt100 only 10 C 30 C or 100 C Supply 230V AC 10 15 48 63Hz 115V AC 10 15 48 63Hz 24V AC 10 15 48 63Hz Power consumption 4 VA approx Permissable ambient temperature 0 to 55 C Permissable storage temperature 40 to 80 C Climatic conditions rel humidity 75 max no condensation Protection IP20 to EN 60529 Electrical safety to EN 60730
16. tinues to be lit up and the safety circuit remains open Only when the reset button is pressed will the safety circuit close and the external fault indication go out 24 6 Functional test 6 4 Testing STBs and STWs with O or S function when connecting resistance thermometers external LI N circuit fault 230V indicator external Pt 100 reset button Short circuit the reset button Simulate a probe break O The LEDs S1 and S2 must light up O The external fault indication must light up The safety circuit must be open O The LEDs S1 and S2 must go out after approx 5 sec 25 6 Functional test O The external fault indication continues to be lit up and the safety circuit remains open Remove the short circuit across the reset button O The LEDs S1 and S2 light up again O The external fault indication remains on Remove the probe break O If the probe temperature is within the permitted temperature range i e below the limit setting by the switching differential for an O function or above the limit setting by the switching differential for an S function then the two LEDS S1 and S2 go out after approx 5 sec O For an STW the external fault indication must also go out and the safety circuit must close For an STB the external fault indication must continue to be lit up and the safety circuit must remain open The safety circuit will only close again when the reset button is pressed
17. tion condition RL Reomp RLF RL internally compensated lead resistance of the measuring circuit Rcomp resistance of the lead compensation resistor LAW RLF resistance of the probe leads 14 4 1 4 Function Indication and controls Screw terminals max 2 5mm Reset button extra Code with TB only Limit setting knob Limit scale 0000 Fault indicator for channel 1 S1 and channel 2 S2 S2 only for STB and STW Q Lead sealable clear cover Plastic casing 15 4 Function 4 2 O function Relay Switching differential Xg y ON Satisfactory range OFF Limit value Ue Response in normal operation U lt OG temperature rises gt the relay drops out at UG Response after rising above the limit O gt dg temperature falls gt the relay pulls in automatically at 0 O0G Xgq STW and TW or has to be reset manually STB and TB Response in fault condition In the event of a fault probe break short circuit faulty electronics supply failure the relay drops out When the fault has been cleared DS dag gt then the relay pulls in automatically STW and TW STB and TB must be reset manually Only in the event of a short term power failure lt 1 min in the satisfactory range of the system will the instrument automatically be enabled after the power has been restored 16 4 Function 4 3 S function Relay ON
18. tton The flow of energy is only enabled again when the temperature is lower O function or higher S function than the preset limit temperature by the amount of the switching differential In the event of a short term power failure lt 1 min within the satis factory range of the system the instrument is enabled automatically after the power has been restored The amount of the switching dif ferential is 3 C 10 C 30 C or 100 C The analogue limit setting knob for the limit temperature is mounted on the front panel An unintentional or unauthorised adjustment of the limit setting is prevented by a clear cover which can be lead sealed The instruments are intended for use as built in units for fix ing onto standard rails to EN 50022 35 The screw terminals for the electrical connection max conductor cross section 2 5mm are on one wiring level The instruments function over defined temperature ranges between 0 and 2000 C Temperature monitor TW Temperature monitors are devices which after cutting out are auto matically reset when the probe temperature has fallen below the preset limit value by the amount of the switching differential Safety temperature monitor STW Safety temperature monitors are temperature monitors which in addition meet the requirements for enhanced safety to DIN 3440 1 Introduction Temperature limiter TB Temperature limiters are devices which are locked out after cutting out They can
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