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Honeywell FEMA TAM Series, Руководство по сборке и эксплуатации, Страница: 22 / 29

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5. Thermostats in intrinsic safe circuits Ex-i 

50 

MU2B-0375GE51 R0211A 

 

Ratings 

Max. switching load:  24 VDC, 50 mA 
Min. switching load:  5 VDC, 2 mA 

Operation of the pressure switch only 
within the allowed specification limits. 

During selection of a suitable switching 
amplifier and planning of wiring lengths 
the following parameters must be 
observed: 

U

i

 = max. 24 VDC 

I

k

 = max. 50 mA 

L

i

 < 100 mH 

C

i

 < 1 nF 

Содержание FEMA TAM Series

Страница 1: ...k MU2B 0375GE51 R0211A Copyright 2011 Honeywell Inc All rights reserved Assembly and Operating instructions Thermostats TAM TRM and TX series Basic models Additional functions TAM 205 TRM 206 TX 213 301 351 Ex i 513 Ex de Ex t ...

Страница 2: ...code Basic version Version with additional function Ex version ABC XXX ABC XXX YYY Ex ABC XXX ABC Identification for series XXX Identification for temperature range YYY Identification for additional functions Ex Identification for Ex version ...

Страница 3: ...5 Terminal connection housing 300 or 500 Ex ABC XXX Ex housing t 700 Important notes Thermostats are precision instruments set and adjusted in factory Do not open the device or reset the varnished adjustment screw This would alter the switching points and resetting in the factory would then be necessary MU2B 0375GE51 R0211A 31 ...

Страница 4: ...able thermo wells TAM and TX Never dip the sensor without pocket direct into the medium Before selection of a thermowell it is necessary to check for material compatibility with measured medium X Caution when touching the device risk of burns Device can reach on sensor side a temperature of up to 130 C Risk of freezing when work with medium temperatures below 0 C X In any case do not open wiring b...

Страница 5: ...ough the use of suitable RC elements X Devices must be protected from solar radiation and rain X Prevent vibrations from reaching the thermostat e g with mechanical isolation or other vibration damping measures X Never use thermostats as a climbing aid X Avoid condensation water when operating the device below 0 C X Honeywell GmbH accepts no liability for non compliance ...

Страница 6: ... 1 4 Adjustment of switching points ABC XXX 2 Thermostats with adjustable switching differential TRMV XXX ABC XXX 303 3 Temperature limiter 3 1 Temperature limiter with mechanical interlock 3 2 Interlock in control cabinet ABC XXX 205 206 ABC XXX 305 306 4 Thermostats with gold contacts 213 ABC XXX 213 5 Thermostats in intrinsic safe circuits Ex i ABC XXX 513 ...

Страница 7: ...375GE51 R0211A 35 6 Ex proof thermostats Ex de Ex ti 6 1 Technical data of Ex proof switch housings 6 2 Connection plan 6 3 Electrical ratings of components 6 4 Serial number 6 5 Setting of switching points Ex ABC XXX ...

Страница 8: ...ounting and electrical wiring of the thermostats 1 1 Technical data not for Ex version Installation Vertical Switch Single pole changeover Switching capacity 8 5 A 250 V AC Max ambient temperature at switch housing 70 C Degree of protection according to EN 60529 Housing 2 IP54 Housing 3 IP65 Housing 5 IP65 Ex housing 7 IP65 ...

Страница 9: ...5GE51 R0211A 37 Fig 1 Wall installation 2 X Fasten holding bracket 1 horizontal ly on wall by means of screws and plugs 6 mm diameter X Fasten terminal plate 3 by means of 2 screws M4 on the reverse side of the switching unit do not tighten maintain approx 2 mm distance between casing and terminal plate X Hang casing on the bracket and clamp it with two screws M4 The thermostats can also be fixed ...

Страница 10: ...dge X Fix clamping bracket 1 by means of 2 screws on the wall X Press together the angles and insert the sensor cartridge After releasing the sensor cartridge fits tightly Sensor mounting in containers and pipes For pressure tight installation thermowells in 3 different lengths are available For further accessories see technical data sheets ...

Страница 11: ...terminals will move out of the housing X Pull connecting cable 7 through conduit and wire contacts according to plan X Place wired contact plate 9 to desired mounting direction 4 directions possible and move mounting plate back into connector housing Refasten cable gland Caution Not fastening cable gland would cause loss of IP protection and strain relieve of the cable X Plug Connector 9 to Pins 1...

Страница 12: ... cover X Pull connecting cable through cable gland and wire terminals according to plan X Fasten cable gland Caution Not fastening cable gland would cause loss of IP protection and strain relief of the cable Factory adjustment With falling temperature switching occurs at the set scale value Switching back as soon as temperature begins to rise occurs at a value higher by the amount of the switching...

Страница 13: ...ms Fig 4 Monitor As the temperature rises 3 1 opens 3 2 closes As the temperature falls 3 2 opens 3 1 closes Fig 5 Maximum limiter Additional function 205 305 Fig 6 Minimum limiter Additional function 206 306 MU2B 0375GE51 R0211A 41 ...

Страница 14: ...f switching points Turning to the right lower switching point Turning to the left higher switching point The grub screw 12 located above the scale is to be slackened off approx 2 turns before making an adjustment and tightened up again after setting 42 MU2B 0375GE51 R0211A ...

Страница 15: ...ector housing Fig 8 Screw terminal housing CAUTION Switch off power before opening After removal of the casing cover 1 the adjustment screw 3 and thus also the setpoint 4 can be adjusted to the required value by means of a screwdriver After adjustment of switchpoint replace cover and tighten 4 cover screws MU2B 0375GE51 R0211A 43 ...

Страница 16: ...60 rotation of the differential screw varies the switching differential by approx 25 of the total differential range 44 MU2B 0375GE51 R0211A Fig 9 Switching differential CAUTION With TRM 303 there is a risk of touching the mains power Therefore switch off power Turning to the right Greater switching differential Turning to the left Smaller switching differential Caution Grub screw without end stop...

Страница 17: ...locking button marked on the scale side of the switching device by a red dot The limiter can not be unlocked until the temperature has decreased by approx 8 10 K Min temperature limitation 206 When temperature falls below the value set on the scale the microswitch switches over and remains in this position The catch can be released by pressing the unlocking button marked on the scale side of the s...

Страница 18: ...stat can act as a temperature limiter if interlock function is provided by electrical circuitry Below are two examples for interlock circuitry In any case valid standards e g DIN EN 50156 VDE 0116 1 and valid local standards must be observed for design of electrical interlocking circuitry ...

Страница 19: ...ture limitation Fig 10 Max temperature limitation TW Thermostat T1 STOP T2 START Minimum temperature limitation Fig 11 Min temperature limitation S Signal if required K1 Relais with catch contact SC Safecty circuit MU2B 0375GE51 R0211A 47 ...

Страница 20: ... used exclusively in the low voltage range in order to keep the transit resistance at the contacts low during lifetime 4 1 Technical data as per 1 1 Switching capacity max 24 V DC max 100 mA min 5 V DC min 2 mA At higher voltages and currents the gold layer on the contacts will be damaged All other data correspond to the basic equipment ...

Страница 21: ...ustable Fig 12 Connection layout The wiring diagram applies for max pressure monitoring At rising pressure contact 3 1 opens and 3 2 closes Installation only in combination with a suitable EC type tested switching amplifier Amplifier must be installed outside the Ex zone The wiring diagram of the switching amplifier and valid installation guidelines for Ex i circuits must be observed MU2B 0375GE51...

Страница 22: ...load 24 VDC 50 mA Min switching load 5 VDC 2 mA Operation of the pressure switch only within the allowed specification limits During selection of a suitable switching amplifier and planning of wiring lengths the following parameters must be observed Ui max 24 VDC Ik max 50 mA Li 100 mH Ci 1 nF ...

Страница 23: ...chnical data of Ex proof switch housings Type of Ex protection 0035 MU2B 0375GE51 R0211A 51 II 2G Ex db eb IIC T6 0035 II 2D Ex tb IIIC T120 C Ex Approval PTB 02 ATEX 1121 Ex Zone Suitable for zone 1 2 21 and 22 Type of protection IP 65 Ambient temperature 20 bis 60 C Max temperature at switching device 60 C Cable entry type M16 x 1 5 for fixed installation only Mounting position Vertically upward...

Страница 24: ...pted and 3 2 will be closed 52 MU2B 0375GE51 R0211A Connection of conductive protection accessible after removal of cover See also Fig 14 6 3 Electrical ratings of components Microswitch Voltage rating up to 250 VAC Current rating at 250 VAC 3 A resistive 3 A inductive Current rating at 250 VDC 0 25 A resistive 0 03 A inductive Current rating at 125 VDC 0 5 A resistive 0 06 A inductive Current rat...

Страница 25: ...nection outside Max cross section 4 mm 2 6 4 Serial number All switch units and their respective terminal board casings are marked with a serial number When installing you should ensure that the terminal board casings do not get mixed up Important notice When installing the Ex switch units and setting them up for operation you should comply with the recognized rules and guidelines for installation...

Страница 26: ...switching points 1 Potential equalization 2 Protective casing for terminals removable 3 Connection terminals 4 Cable inlet M16 x 1 5 For fixed installation only 5 Switching point adjustment 6 Locking bolt for setting spindle 7 Connection of conductive protection 54 MU2B 0375GE51 R0211A ...

Страница 27: ...d remove the terminal board casing with 4 hexagon screws M4 The affixing screw on the front end above the scale has to be removed and should be reattached after setting the switching point Turning the setting spindle clockwise gives a lower switching point turning anticlockwise gives a higher switching point The scale should be used as a guide for more exact settings you should use a thermometer ...

Страница 28: ...ion Controls Division of Honeywell Technologies Sàrl Rolle Z A La Pièce 16 Switzerland by its Authorized Representative Honeywell GmbH FEMA Controls Böblinger Strasse 17 71101 Schönaich Germany Phone 07031 637 02 Fax 07031 637 850 MU2B 0375GE51 R0211A www fema biz ...

Страница 29: ... TAM150 513 TAM150 205 TAM150 206 TX490 301 TX490 TX490 305 TXB490 213 TXB150 TXB813 363 TX490 213 TX813 301 TX813 305 TX813 213 TX813 205 TX023 213 TX150 213 TX813 TXB813 351 TXB150 351 TXB023 351 TXB023 206 TX150 301 TX490 513 TXB813 205 TXB490 205 TXB490 TXB150 513 TXB490 206 TX023 301 TX023 306 TX150 TXB023 TX023 351 TXB150 301 TX023 513 TXB023 301 TXB150 213 TX813 363 TXB813 TXB490 513 TX490 ...

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