Endress+Hauser Nivocompact FTC 131 Скачать руководство пользователя страница 3

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Fail-Safe Mode

The built-in feature for minimum/
maximum fail-safe switching allows the
Nivocompact to be used in all
applications requiring high operational
safety:

•

Maximum Fail-Safe:
The current circuit is blocked
if the probe is covered
or the power supply fails.

Electronic Insert EC 20
Two-wire AC connection
21 V

…

250 V

Electronic switch, max. 350 mA

Electronic Insert EC 22
Three-wire DC connection
10 V

…

55 V

Transistor circuit,
load connection PNP, max. 350 mA

•

Minimum Fail-Safe:
The current circuit is blocked
if the probe is uncovered
or the power supply fails.

A red LED on the electronic insert
indicates switching status.

Electronic Insert EC 23
Three-wire DC connection
10 V

…

55 V

Transistor circuit,
load connection NPN, max. 350 mA

Electronic Insert EC 24
with potential-free relay output,
AC voltage operation
21 V

…

250 V or

DC voltage operation
20 V

…

200 V

TI133Y02

(load circuit closed)

(load circuit open)

Minimum
fail-safe
mode

Maximum
fail-safe
mode

Power failure

Safety
Switching

Level

Electronic Switch

Full

Empty

Disconnected

Connected

Disconnected

Connected

Disconnected

The electronic switch
operates according to
the fail-safe switching
and the level.

Main Features of the
Different Electronic
Inserts

U =

TI133Y13

U
U =

EC 20

EC 22

EC 23

EC 24

Electrical connections
available with the
different electronic
inserts.

Содержание Nivocompact FTC 131

Страница 1: ...le mounting low installation costs for automation and control systems PLC PCS PC relays contactors etc No moving parts in silo no wear long operating life no maintenance Simple calibration variable switchpoint with probes mounted from above Rope version can be easily shortened can be used for various limit values short delivery time FTC 231 with rope probe ø 10 mm for mounting from above Mainly fo...

Страница 2: ...me constant is τ R x CA where R is the resistance of the circuit and CA the capacitance of the capacitor formed by the probe and silo wall If bulk material with a high dielectric constant moves into the electrical field between the probe and silo wall then the capacitance CA increases and with it the time constant τ The change in the time constant is evaluated and the Nivocompact is activated acco...

Страница 3: ... insert indicates switching status Electronic Insert EC 23 Three wire DC connection 10 V 55 V Transistor circuit load connection NPN max 350 mA Electronic Insert EC 24 with potential free relay output AC voltage operation 21 V 250 V or DC voltage operation 20 V 200 V TI133Y02 load circuit closed load circuit closed load circuit open load circuit open load circuit open Minimum fail safe mode Maximu...

Страница 4: ...gth max 22 m Tensile load max 8 t 24 16 40 max 80 100 approx 250 L max 22000 approx 155 max 88 TI133E20 60 AF G 1 or NPT 1 Insulation Steel rope Partial insulation Cast iron Dimensions FTC 331 L max 22000 approx 250 approx 140 10 40 max 88 max 80 20 TI133E19 60 AF G 1 or NPT 1 Insulation Steel rope Partial insulation Cast iron 55 Dimensions FTC 231 max 80 approx 140 L 350 Standard max 88 25 TI133E...

Страница 5: ...h high silo temperatures Insulate the outside silo wall to avoid exceeding the max permissible temperature of the Nivocompact housing This insulation also prevents condensation near the threaded boss and so reduces build up and the danger of error switching Installation in the Open A protective sun cover as an accessory protects the Nivocompact with the aluminium housing from excessive temperature...

Страница 6: ...n empty silo The FTC 231 or FTC 331 is recommended This mounting example shows a steel plate as counter electrode Heat insulation prevents condensation and build up on the steel plate When mounting in a silo made of plastic material a sheet metal plate should be attached to the outside of the silo as a counter electrode This plate can be either square or round The dimensions with thin silo walls a...

Страница 7: ...int may damage the probe or subject the silo roof to excessive strain c Threaded socket too long Condensation and dust may penetrate and cause errors d Too near silo wall When swinging gently the probe can hit the wall or touch any build up which may have formed This can result in error switching Coarse Grained Materials The Nivocompact FTC 231 or FTC 331 should only be used for maximum detection ...

Страница 8: ...e same length as the distance of the weight to the silo wall probes then a special version with butterfly weight can be supplied as an accessory The increased surface area of this weight ensures that there is a large enough change in capacitance when the probe is covered by material An LB of 300 mm is normally sufficient TI133Y09 Steel plate connected to the reinforcing steel Concrete roof recomme...

Страница 9: ... switch Nivocompact with electronic insert EC 20 must like all switches be connected in series with the load e g relays microcontactors lamps to the power supply Connection voltage The voltage across Terminal 1 and 2 of the electronic insert must be at least 21 V The power voltage must be correspondingly higher to compensate for the voltage drop across the connected load Load cutoff Note that load...

Страница 10: ...circuiting Protect the relay contact by connecting a spark barrier to instruments with high inductance A fine wire fuse load dependent can protect the relay contact if a short circuit occurs Power Supply TI133Y15 1 3 M E R F L L U 10 V 55 V 2 PE EC 22 TI133Y16 EC 23 1 3 M E R F L L U 10 V 55 V 2 PE TI133Y17 EC 24 1 3 M E U or U Potential free change over contact L1 N U 21 V 250 V or u 20 V 200 V 4...

Страница 11: ...r fail safe mode Rotary switch for probe length Adjusting elements for capacitance fine and coarse LED to indicate switching mode Operating elements on the electronic insert Technical Data Nivocompact FTC 131 FTC 231 FTC 331 Operating temperature in silo 20 C 80 C 20 C 80 C 20 C 60 C Operating pressure pe according to operating temperature max 10 bar atmospheric atmospheric Max permissible load on...

Страница 12: ...ge Three wire connection Power supply U 10 V 55 V Superimposed AC voltage Upp max 5 V Current consumption max 15 mA Load connection Open Collector PNP EC 22 or NPN EC 23 Switching voltage max 55 V Connected load short term max 1 s max 1 A Connected load continuous max 350 mA Protected against reverse polarity Electronic Insert EC 24 for DC and AC Voltages Relay Output Power supply U 20 V 200 V or ...

Страница 13: ...kg K PBTP synthetic housing IP 66 0 31 kg Y Others on request Electronic Insert mounted in housing 1 21 V 250 V 50 60 Hz EC 20 0 17 kg Two wire AC connection 2 PNP 10 V 55 V EC 22 0 17 kg Three wire DC connection 4 Relay 21 250 V AC 200 V EC 24 0 17 kg AC or DC connection with relay output change over contact 9 Others on request Order code Total weight kg Please state other probe lengths in mm FTC...

Страница 14: ...6 000 mm basic length can be shortened 1 74 kg 9 Others on request Housing B Aluminium housing IP 66 0 42 kg K PBTP synthetic housing IP 66 0 31 kg Y Others on request Electronic Insert mounted in housing 1 21 V 250 V 50 60 Hz EC 20 0 17 kg Two wire AC connection 2 PNP 10 V 55 V EC 22 0 17 kg Three wire DC connection 4 Relay 21 250 V AC 200 V EC 24 0 17 kg AC or DC connection with relay output cha...

Страница 15: ... shortened 5 60 kg 9 Others on request Housing B Aluminium housing IP 66 0 42 kg K PBTP synthetic housing IP 66 0 31 kg Y Others on request Electronic Insert mounted in housing 1 21 V 250 V 50 60 Hz EC 20 0 17 kg Two wire AC connection 2 PNP 10 V 55 V EC 22 0 17 kg Three wire DC connection 4 Relay 21 250 V AC 200 V EC 24 0 17 kg AC or DC connection with relay output change over contact 9 Others on...

Страница 16: ...ompact FTC 731 or Nivocompact FTC 831 for applications where high material build up is expected Technical Information TI 134F 00 e 92 TI133Y22 77 132 Dimensions of protective sun cover accessory This cover prevents condensation in the housing Supplementary Documentation Details When Ordering TI133Y21 210 250 180 Dimensions of butterfly weight accessory This weight provides a larger capacitance dif...

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