Liquid Level Limit Switch liquiphant T FTL 20

Transcription

1 Technical Information TI 64F/4/ae Liquid Level Limit Switch liquiphant T FTL 0 Level limit switch for liquids Applications The Liquiphant T FTL 0 is a level limit switch for virtually any kind of fluid and is used in tanks, containers and pipelines. It is used in cleaning and filtering systems and coolant and lubricant tanks for overspill protection or as a pump protector. The FTL 0 is ideal for applications which previously used float switches, conductive, capacitive or optical sensors. The FTL 0 works in applications which are unsuitable for these measuring methods due to conductivity, changing dielectric, build-up, turbulence, flow or air bubbles. The FTL 0 is not suitable for hazardous areas, sanitary applications or applications where the fluid temperature is above F (00 C). Benefits at a glance Operational safety, reliability and universal applicability through use of the tuning fork measuring principle External test option using test magnet On-site indicator using LED display Easy to install even at points difficult to access due to compact construction and / or /4 process connection ugged 6L stainless steel housing Service-friendly plug-in connections The Power of Know How

2 FTL 0 Function and system design Function Installation examples The FTL 0 tuning fork is excited to its resonant frequency by means of a piezoelectric drive. This frequency changes if the tuning fork is covered by a fluid. The FTL 0 electronics monitor the resonant frequency and indicate whether the tuning fork is oscillating in air or whether the forks are covered with fluid. The FTL 0 can be installed in any position in a tank of pipe. The formation of foam does not impair its function. Example : Overspill protection or high level detection Example : Dry running protection for pumps Example : Low level detection or dry running protection Application instructions The FTL 0 is suitable for any fluid which drips from the fork of the FTL 0 so that the fork can oscillate freely. The fluid may also contain solids which are smaller than 0.0 (5 mm). The Liquiphant even functions when a slight build-up (deposit) has formed on the fork. However, fluids which form heay build-up may prevent the fork from oscillating freely. When installed in confined spaces or when viscous fluids are used, fluid may not drop off the fork sufficiently. The sensor then incorrectly detects the fork as being covered. Correct Wrong

3 FTL 0 Operating modes for AC and DC-PNP versions The FTL 0 can be connected in two operating modes. Depending on the operating mode selected (MAX or MIN safety), the FTL 0 will switch off safely in the event of a fault (e.g. if the power supply is interrupted). MAX - maximum fail-safe mode The FTL 0 keeps the electronic switch closed as long as the fluid level is below the fork Example application: overspill protection MIN - Minimum fail-safe mode The FTL 0 keeps the electronic switch closed as long as the fork is immersed in fluid Example application: empty tank or dry run protection of pumps The electronic switch opens if the limit is reached, if a fault occurs or in the event of a power failure. For the status of the indicator light, see below. Indicator signals and faults The FTL 0 LED indicator is located on the wiring connection side of the unit. The green LED is always lit when unit is powered. AC and DC-PNP versions with angle plug connector AS-i and DC-PNP versions with M x micro connector Indicator light ed LED comes on Green LEDnot ON ed LED flashing Indicator light Yellow LED comes ON ed LED comes ON AS-i version ed LED comes ON DC-PNP version Green LED not ON ed LED flashing ( Hz) State / Action Operating mode MAX (overspill protection): Sensor immersed in fluid Operating mode MIN (dry pump protection): Sensor is not immersed in fluid Error: no power supply Check connector plug, cable and power supply Error: Overload or short-circuit in load circuit Check and repair short-circuit educe max. load current to below 50 ma Error: Internal sensor error or sensor corroded eplace unit State / Action Sensor immersed in fluid Error: Address 0 set or communication error Carry out addressing process Parameterize slave educe line length, < 8 ft (00 m) total length Error: Overload or short-circuit in load circuit Check and repair short circuit educe max. load current to below 50 ma Error: No power supply Check connector plug, cable and power supply Error: Internal sensor error or sensor corroded eplace unit

4 FTL 0 DC-PNP connection Micro connector M x Voltage source: Safety extra-low voltage Class circuit Operating mode MAX (NC contact) Operating mode MIN (NO contact) A : Brown : White : Blue 4 : Brown : Blue 4: Black 0.5A L L+ L L+ Suitable for dual-output operation: When both outputs and 4 are wired simultaniously, the NO and NC outputs maintain opposite states in normal operation. Both electronic switches are open in the event of a fault or if the power supply is interrupted. In addition to level monitoring, function-dependent sensor monitoring can also take place using dual-output operation. Angled plug connector Operating mode MAX Operating mode MIN A 0.5A GND L L+ GND L L+ Operating mode MAX Operating mode MIN > 9V > 9V 0.5A 0.5A GND L N GND L N 4

5 FTL 0 AS-i bus connection AS-i + : Brown 4 AS-i : Blue AS-i programming instructions AS-i-Profile: S-.A.E The address is defaulted to 0 (HEX). It is changeable via the bus master or programming unit. Data bit: D0: Sensor covered D: State = OK D0: 0 Sensor free D: 0 State = error D and D are not used Parameter bits (P0 to P) are not used. Test using test magnet Function FTL 0 AC and DC-PNP versions can be tested for function by placing a magnet on the nameplate mark (see graphic below). The current state of the electronic switch will be reversed. The FTL 0 AS-i version is tested in the same fashion. The D0 data bit is inverted. In both versions, the switching state changes. NOTE: A test magnet is supplied with the instruction manual 5

6 FTL 0 Mechanical construction Dimensions and mounting details Micro-connector M x Quick-on angle plug.8" (0).57" (40).4" (.5).57" (40).4" (.5) SW SW 5.85" (48.5).0" (5.9) 6.0" (60).0" (5.9).50" (8).50" (8) 0.5" * () 0.5" * () 0.4" ** (.5) /" or /4" NPT 0.67" (7.) 0.4" ** (.5) /" or /4" NPT 0.67" (7.) Dimensions are in inches (mm) * Switch point for vertical installation ** Switch point for horizontal installation Switch points at: density / 7 F / 0 psig ( / C / 0 bar) Materials Process connection Connection cable Tuning fork, process connection and housing, 6L SS Wiring connector, PPSU Threaded, / and /4 NPT, G (BSPP - DIN/ISO 8), or (BSPT - DIN 999, ISO 7-) threads Angle plug, 6 AWG maximum (.5 mm ), diameter 0.4 to 0.5 (6 to 9 mm) Angle QUICKON plug, 8 to AWG (0.4 to 0.75 mm ), diameter 0.4 to 0.5 (.5 to 6.5 mm) Micro connector M x, pin assignment as per IEC Power supply AC version DC-PNP version AS-i-bus 6 Supply voltage: 9 to 5 VAC, 50/60 Hz Connectable load: maximum 50 ma (auto. load verification on connection) Supply current: maximum.8 ma Connector: 90 angle plug Supply voltage: 0 to 5 VDC Power supply: safety extra-low voltage, Class circuit Connectable load: maximum 50 ma (overload proof) Supply current: maximum 5 ma Connector: 90 angle plug or micro connector M x According to AS-i Association specification V.., Slave profile S-.A.E Supply voltage: 6.5 to.6 V Connectable load: EN 5095 and IEC 606- Supply current: Maximum 5 ma Connector: micro connector M x

7 FTL 0 Operating conditions Ambient temperature Process temperature Operating pressure Fluid density Fluid viscosity Climatic class Protection per EN 6059 EMV AC and DC-PNP EMV AS-i Storage temperature -40 to + 58 F (-40 to + 70 C) AS-i-bus, - to +58 F (-5 to + 70 C) -40 to +76 F (-40 to +80 C); -40 to + F at ambient temperature up to F (50 C) -4.5 psig to +580 psig (- to +40 bar) Minimum 0.7 SGU Maximum 0,000 cp IEC Part - 8 Pattern a NEMA 4 (IP 65) with angle connector plug NEMA 6 (IP 65 / IP 67) with micro connector M x Interference emission to EN 66; Electrical Equipment Class B Interference immunity to EN 66; Annex A (industrial) and NAMU ecommendation NE (EMC) EN to +85 F (-40 to +85 C) Output Switch time Switch hysteresis Approximately 0.5 seconds on coverage; approximately second after fork becomes uncovered. Approximately 0. ( mm) for vertical installation Approximately 0.08 ( mm) for horizontal installation Certificates and approvals Along with the Technical Information and Instruction Manuals, the certificates can be obtained free of charge at CSA + CSA US AS-i version CE Mark Standard Certificate No. CAN/CSA-C. No MC 5079 UL - (IEC 6000) V.. Slave Profile S-.A.E. 70 By attaching the CE Mark, confirms that the instrument fulfills all the requirements of the relevant EC directives. Accessories Socket wrench (AF ) for installing FTL 0 into process connection Order Number: ft (5 m) PVC connecting cable with M x micro connector Order Number:

8 Ordering information FTL 0 vibration level limit switch for liquids FTL 0-4 Certificate General purpose, CSA and CSA US * Process connection / material 0 G / BSPP / 6L SS, DIN/ISO 8 G /4 BSPP / 6L SS, DIN/ISO 8 / NPT / 6L SS /4 NPT / 6L SS 4 / BSPT / 6L SS DIN 999, ISO 7-5 /4 BSPT / 6L SS DIN 999, ISO 7- Electronics 9 to 5 VAC, -wire 0 to 5 VDC, PNP -wire AS-i-Bus 4 Electrical connector 0 Angle plug, PG, ISO 4400 (AC and DC only) 4 Angle plug, / NPT, ISO 4400 (AC and DC only) 5 M x micro connector (DC and AS-i only) 6 Angle plug with QUICKON connection * The CSA US Mark signifies that the product has been evaluated to the applicable CSA and ANSI / UL Standards for use in Canada and the US respectively. For application and selection assistance, in the U.S. call 888-ENDESS For total support of your installed base, 4 hours a day, in the U.S. call Visit us on our web site, United States, Inc. 50 Endress Place Greenwood, IN 464 Phone: (7) ENDESS FAX: (7) Canada Canada Ltd. 440 Graham s Lane Unit, Burlington ON, L7S W Phone: (905) FAX: (905) Mexico Paseo del Pedregal No. 60 Col. Jardines del Pedregal 0900, Mexico D.F. Mexico Phone: (55) FAX: (55) The Power of Know How TI 64F/4/ae/ , Inc.