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nivocompact

FTC 731 
Level Limit Switch

Installation and Operating Manual

BA 023F/00/en/03.92
015172-0001

Hauser

+

Endress

The Power of Know How

Содержание nivocompact FTC 731

Страница 1: ...nivocompact FTC 731 Level Limit Switch Installation and Operating Manual BA 023F 00 en 03 92 015172 0001 Hauser Endress The Power of Know How...

Страница 2: ...BA 023F 00 en 03 92 015172 0001 HD CV4 2...

Страница 3: ...ction 12 Wiring Connection 12 EC 30 Two Wire Connection for AC 13 EC 32 Three Wire PNP for DC 14 EC 33 Three Wire NPN for DC 15 EC 34 Relay Output for DC and AC 16 Wiring On Site 17 Calibration 18 Swi...

Страница 4: ...Nivocompact FTC 731 2...

Страница 5: ...om any direction Application Examples Plastic granulates Grain Spices Lime Kaolin Flour Semolina Plaster Fodder Cement and similar bulk solids Note Fine grained bulk solids should have dielectric cons...

Страница 6: ...Process connection parallel thread G 11 2 A acc to DIN ISO 228 I Material of process connection fibre glass reinforced polyester PBTP Material of probe fibre glass reinforced polyester PBTP Insulation...

Страница 7: ...33 Switching voltage max 55 V Connected load short term max 1 s max 1 A Connected load continuous max 350 mA Residual current with transistor blocked 100 A Protected against reverse polarity Power sup...

Страница 8: ...ectronic switch The entire measuring system consists of Nivocompact FTC 731 power supply and connected control systems switches signal transmitters e g process control systems PLC relays microcontacto...

Страница 9: ...obe tip then the capacitance CA increases and with it the time constant This change in the time constant is evaluated and causes the Nivocompact FTC 731 to switch Fail Safe Switching The built in feat...

Страница 10: ...ctive sun cover for mounting in the open b Heat insulation on the silo wall with high temperatures in the silo Incorrect Installation c Incoming material can damage the probe The filling curtain can c...

Страница 11: ...0 mm to a Nivocompact FTC 831 b Threaded socket silo wall material build up is a maximum 50 mm thick so that no calibration is required before start up c Minimum detection in the outlet cone is only p...

Страница 12: ...eal up to 6 bar see Fig 8 A torque greater than 120 Nm destroys the plastic thread Tools Required for Installation FTC 731 capacitive level limit switch with rod probe Threaded boss with rod probe Hou...

Страница 13: ...sen the 3 screws in the housing see Fig 9 Rotating The housing can now be rotated through 360 When mounting an FTC 731 laterally the cable gland should point downwards so that no moisture can enter Ti...

Страница 14: ...of the fine wire fuse corresponds to the maximum load to be connected The fine wire fuse does not protect the electronic insert of the Nivocompact FTC 731 Diameter of Wiring Because of the small curr...

Страница 15: ...y higher to compensate for the voltage drop across the connected load Load Cutoff Note that loads connected in series are not completely disconnected from the power supply if the electronic switch in...

Страница 16: ...ormal switching mode The transistor is blocked on level alarm or with a power failure Protection Against Voltage Peaks Connecting to an instrument with a high inductance a voltage limiter should be co...

Страница 17: ...ignal in normal switching mode The transistor is blocked on level alarm or with a power failure Protection Against Voltage Peaks Connecting to an instrument with a high inductance a voltage limiter sh...

Страница 18: ...l 3 and Terminal 4 on level alarm or with a power failure Protection Against Voltage Peaks and Short Circuiting Protect the relay contact by connecting a spark barrier to instruments with high inducta...

Страница 19: ...m to 10 mm A suitable gasket must also be used for other cable diameters You can seal with the water tight cable gland with cables having diameters from 5 mm to 12 mm Ensure that there is a good short...

Страница 20: ...before calibration Turn on the power supply Switching Delay Switching delay can be adjusted between approx 0 5 s and 20 s See Fig 17 It is the same time interval for the sensor whether free or covered...

Страница 21: ...ail safe the current circuit is blocked if the probe is covered or the power supply fails Minimum fail safe The current circuit is blocked if the probe is uncovered of the power supply fails Changing...

Страница 22: ...itance calibration the silo must be empty or the level must be at least 100 mm below the level of the probe The adjuster for the calibration requires approx 30 turns from one end of the range to the o...

Страница 23: ...o Page 19 Fig 20 Capacitance calibration must be carried out both slowly and carefully Fig 21 Accurate adjustment ensures high switching reliability Material characteristics bulk solid Very low dielec...

Страница 24: ...hen cleaning and checking the silo Examine the probe to check for damage to the installation especially around the threaded boss Remove material build up especially at the tip of the probe With initia...

Страница 25: ...c switch connected LED off Dielectric constant of the material too small Drier or different material now in silo than expected on calibration Fig 22 Troubleshooting with maximum fail safe mode Error w...

Страница 26: ...constants or with critical installations If required Carry out a capacitance calibration Returning Parts for Repair If a Nivocompact FTC 731 cannot be repaired and needs to be sent back to Endress Hau...

Страница 27: ......

Страница 28: ...mba Tel 042 56993 Fax 042 50981 Brazil Samson Endress Hauser Ltda Sao Paulo Tel 011 50313455 Fax 011 50313067 Canada Endress Hauser Ltd Burlington Ontario Tel 905 6819292 Fax 905 6819444 Chile Endress...

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