BTL-5- -M -J-DEXC-KL20

Transcription

1 Sensors Worldwide Technical Description / User s Guide BTL-5- -M -J-DEXC-KL20 Micropulse Linear Transducer Explosion-proof Rod Style

2 BTL-5- _ -M -J-DEXC-KL20 Explosion-proof Rod Style

3 BTL-5- _ -M -J-DEXC-KL20 Introduction This manual provides the functional description and electrical specifications of the Hazardous Area Approved Linear Position Transducer. The following versions are described: BTL-5-A/B/C/E/G_-M -J-KL20 Analog Output Versions (see ordering code pg. 8) BTL-5-I/K/L/M/N/P/R_-M -J-KL20 Digital Pulse Output Versions (see ordering code pg. 9) For the purpose of this documentation, the Linear Transducer will be referred to as the transducer. The transducer uses non-contact, magnetostrictive technology to translate the physical position of a magnetic marker ring or magnetic float into an electrical position signal. Depending on the version, this electrical position signal is presented on the output as: - Analog voltage 0 to 10 Vdc -10 to +10 Vdc -5 to +5 Vdc - Analog current 4 to 20 ma 0 to 20 ma - Digital Pulse START/STOP (leading or trailing edge active) Pulse-Width-Modulated (PWM) - with or without recirculations Approvals The transducer is designed and manufactured to conform to the following approval standards for use in Hazardous Areas: Factory Mutual Class I Division 1, Groups A,B,C,D Class II/III Division 1, Groups E,F,G Type 4X/6P, M20x1.5 thread opening Maximum Pressure Rating: 8700 PSI (600 bar) CSA Class I Division 1, Groups A,B,C,D Class II/III Division 1, Groups E,F,G Type 4X/6P, M20x1.5 thread opening Maximum Pressure Rating: 8700 PSI (600 bar) CENELEC II 2 G EEx d IIC T6 IP68 PTB Nr. 00 ATEX 1094 The transducer may not be used in any hazardous areas that fall outside these classifications. CONDITIONS FOR CONNECTION CENELEC operation requires compliance with the following conditions: 1. The Linear Transducer BTL-5 is to be connected via suitable cable entries or conduit systems which meet the requirements of EN 50018, sections 13.1 and 13.2 and for which a separate test certificate has been issued. 2. Cable entries (Pg screwed conduit entries) and sealing plugs of simple type must not be used. When the Linear Transducer BTL-5 is connected via a conduit entry approved for this purpose, the appertaining sealing device must be arranged directly on the enclosure. 3. Openings which are not used must be sealed according to EN section The connecting cable of the Linear Transducer BTL-5 must be permanently laid in such a way that it is sufficiently protected against damage

4 BTL-5- _ -M -J-DEXC-KL20 Contents A. Introduction... 3 Approvals Safety Advisory Proper application Qualified personnel Use and inspection Scope Function and Characteristics Characteristics Function Available stroke lengths and magnets Installation Mounting Mechanical Accessories Electrical Specifications Ordering Code Analog Output Digital Pulse Output Safety Advisory Read this manual before installing and operating the Micropulse Transducer. 1.1 Proper application The BTL5 Micropulse transducer is intended to be installed in a machine or system. Together with a controller (PLC) it comprises a position measuring system and may only be used for this purpose. Unauthorized modifications and non-permitted usage will result in the loss of warranty and liability claims. 1.2 Qualified personnel This guide is intended for specialized personnel who will perform the installation and setup of the system. 1.3 Use and inspection The relevant safety regulations must be followed when using the transducer system. In particular, steps must be taken to ensure that should the transducer system become defective no hazards to persons or property can result. This includes the installation of additional safety limit switches, emergency shutoff switches and maintaining the permissible ambient conditions. 1.4 Scope This guide applies to the model BTL5_J-DEXCKL20... Micropulse Explosion proof transducer. An overview of the various models can be found in section 12 Versions (indicated on product label) on page 12. Note: For special versions, which are indicated by an -SU _ designation in the part number, other technical data may apply (affecting calibration, wiring, dimensions etc.). The following patents have been granted in connection with this product: US Patent Apparatus and Method for Automatically Tuning the Gain of an Amplifier The CE Mark verifies that our products meet the requirements of EC Directive 89/336/EEC (EMC Directive) and the EMC Law.Testing in our EMC Laboratory, which is accredited by DATech for Testing Electro- magnetic Compatibility, has confirmed that Balluff products meet the EMC requirements of the following Generic Standards: EN (emission) EN (noise immunity) Emission tests: RF Emission EN Group 1, Class A Noise immunity tests: Static electricity (ESD) EN Severity level 3 Electromagnetic fields (RFI) EN Severity level 3 Fast transients (Burst) EN Severity level 3 Surge EN Severity level 2 Line-induced noise induced by high-frequency fields EN Severity level 3 Magnetic fields EN Severity level

5 BTL-5- _ -M -J-DEXC-KL20 2 Function and Characteristics 2.1 Characteristics Micropulse transducers feature: Very high resolution, repeatability and linearity Immunity to shock, vibration, contamination and electrical noise An absolute output signal Automatic signal regulation Pressure rated to 600 bar IP 68 per IEC Function The transducer contains a tubular waveguide enclosed by an outer stainless steel rod. A magnet attached to the moving member of the machine or to the cylinder piston is moved over the rod and its position constantly updated. The magnet defines the measured position on the waveguide. An internally generated INIT pulse interacts with the magnetic field of the mag-net to generate a magnetostrictive torsional wave in the waveguide which propagates at ultrasonic speed. The torsional wave arriving at the end of the waveguide is absorbed in the damping zone. The wave arriving at the beginning of the waveguide creates an electrical signal in the coil surrounding the waveguide. The propagation time of the wave is used to derive the position. Depending on the version the corresponding value is output as either an analog (voltage or current) signal, or in various digital pulse formats. This process takes place with measuring high precision and repeatability within the stroke range defined as nominal stroke length. At the rod end is a damping zone, within which no reliable signal is available, but which may be entered by the magnet. The electrical connection between the transducer, the processor/ controller and the power supply is via a cable, terminated at a screw terminal block inside the transducer housing. Dimensions for installing the Micropulse transducer: Fig. 4-2 Dimensions for installing the magnet: Fig Available stroke lengths and magnets To provide for optimum fit in any application, a wide range of standard stroke lengths and magnets in various form factors are available. Magnets must therefore be ordered separately. See pages 10 & 11 for available stroke lengths. 3 Installation 3.1 Mounting When possible, use nonmagnetizable material for attaching the transducer and magnet ring. Fig When possible, use nonmagnetizable material for attaching the transducer and magnet ring (see Fig. 3). The smallest permissible distance between magnet ring and rod mounting surface is shown in Fig. 1. The sealing is carried cut with the O-ring supplied at the flange facing.!-" for magnetizable materials # for non-magnetizable materials a = Spacer of nonmagnetizable materials b = Magnet ring Fig. 3-1: Mounting

6 BTL-5- _ -M -J-DEXC-KL20 4 Mechanical Fig 4-1. Mechanical Dimensions Important Installation Notes: The contact surface of the transducer must be completely contacted by the mounting surface. The O-ring supplied must make a perfect pressure seal, i.e. the bevel for the O-ring must be configured exactly as shown in Fig To achieve a secure mounting, attach the transducer with all 6 cylinder head screws ISO 4762, M6 x A2-70 (see Fig.4-1). All screws must be tightened to 3.5 Nm. For horizontal mounting of transducer with stroke lengths greater than 500 mm, the pressure tube should be supported or attached at its end. When installing in a hydraulic cylinder, do not allow the magnet ring to rub against the pressure tube. The bore diameter in the piston and cylinder rod should be at least 13 mm. When attaching the transducer to magnetizable materials, appropriate measures must be taken to protect against magnetic disturbances (see Fig.3-1). Note the recommended distance of the transducer and cylinder from strong, external magnetic fields. Fig. 4-2 Mounting hole detail

7 BTL-5- _ -M -J-DEXC-KL20 5 Accessories Magnets Installation orientation: Raised marking on top side of float BTL-P R BTL-2-S K-Ex Installation orientation: Cylindrical part is top side of float BTL-P S BTL-2-S P-Ex BTL-P R IMPORTANT! The floats on this page are designed for use in Zone 0 applications.the floats are designed so they make continuous mechanical contact with the transducer rod. This ensures that there can be no static discharge between float body and transducer rod. Under no circumstances should this design feature be defeated. Installation orientation: 2 raised markings on top side of float BTL-2-S Z01-Ex Installation orientation: Raised marking on top side of float BTL-2-S Z-Ex Float Type min. density 1 g/ cm3 (H20) 0.7 g/cm3 BTL2-S P-Ex 0.6 g/cm3 ss ~ 41 mm ss ~ 57 mm ss ~ 57 mm BTL2-S K-Ex 0.7 g/cm3 ss ~ 26 mm ss ~ 40 mm ss ~ 40 mm BTL2-S Z-Ex 0.7 g/cm3 ss ~ 30 mm ss ~ 39 mm ss ~ 39 mm BTL2-S Z01-Ex 0.85 g/cm3 * ss ~ 45mm sinks sinks Table 3-1: Immersion depths ss* Density of the float

8 BTL-5- _ -M -J-DEXC-KL20 Accessories 34.9 [1.375] Important! The Adapter Flange is used to adapt the M20 x 1.5 threads on the transducer housing to 1/2-14 NPT threads. Factory Mutual approval requires that electrical connections be made through rigid conduit. It is the responsibility of the user of the this product to comply with all interconnection requirements as outlined by the appropriate standards pertaining to electrical equipment in hazardous locations. 0012A010 Note - The Adapter Flange must be ordered separately. Fig. 5-1 Adapter Flange BTL-5-EXP-PROOF-ADAPTER Electrical Signal Outputs -Analog Versions Pin Function BTL-5-A / B / G (Voltage Output) BTL -5-C / E (Current Output) 1 Not used Signal Out (4-20 m A or 20 m A) 2 Signal G N D Signal G N D 3 Voltage Output (decreasing) Not used 6 Voltage Output (increasing) Not used Signal Outputs - Digital Pulse Versions Pin Function BTL-5- I / K / M / N / P (Start / Stop) BTL -5- L / R (PWM) 1 Interrogate (+) Interrogate (+) 2 Start / Stop (+) Gate (+) 3 Interrogate (-) ** Interrogate (-) ** 6 Start / Stop (-) ** Gate (-) ** Interrogate + and interrogate - are not used in internally-interrogated PWM output versions ** Interrogate - and START/STOP - are not used in single-ended - START/STOP versions (output code N ) Power Supply connections ( all versions) Pin Function BTL-5-_1 (+ 24 V Supply) BTL -5-_2 (± 15 V Supply) 4 Supply GND Signal GND Vdc (±20%) Supply +15 Vdc (±2%) Supply 7 Not used - 15 Vdc (±2%) Supply BTL-5-_5 (enhanced ± 15 V Supply) Signal GND +15 Vdc (±30%) Supply - 15 Vdc (±30%) Supply (Optional) Fig. 6-1 Connector (Under Cover)

9 BTL-5- _ -M -J-DEXC-KL20 Specifications Measured Parameter Specifications Analog Output Digital Output Repeatability Voltage-output versions 0.5mV or 5µm Resolution 2 µm + (resolution = hysteresis) (whichever is greater) Hysteresis 4 µm = Current-output versions 1µA or 5µm 6 µm (whichever is greater) Sampling Rate For stroke lengths 2000mm 1 khz 1 khz For stroke lengths > 2000mm 500 Hz 500 Hz Non-Linearity For stroke lengths 500mm ± 100 µm ± 100 µm For stroke lengths > 500mm ± 0.02 % of full-scale ± 0.02 % of full-scale Temperature Coefficient Voltage-output versions [150 µv/ C + (5 ppm (6 µm + 5ppm * stroke V = output voltage range n (V) / C * P * V/NL)] * T length) / C I = output current range in (ma) T= temperature change P = magnet position Current-output versions [0.6 µa/ C + (10 ppm / C * P * I *NL)] * T (6 µm + 5ppm * stroke length) / C Shock Rating 100 g/6 ms per IEC g/6 ms per IEC Continuous Shock 100 g/6 ms per IEC g/6 ms per IEC Vibration 12g, 10 to 200 Hz per IEC g, 10 to 200 Hz per IEC Pressure Rating (rod) Up to 600 bar Up to 600 bar Operating Temperature -40 to +185 F -40 to +185 F Humidity < 90% non-condensing < 90% non-condensing Environmental Rating IP 68* per IEC 529 IP 68* per IEC 529 Defined as continuous immersion Defined as continuous immersion in water for a period of 48 hours inwater for a period of 48 hours at a depth of 51 meters at a depth of 51 meters Note - the IP 68 rating applies to the transducer body and cover. It is assumed that the conduit or cable connection is also sealed Note - the IP 68 rating applies to the transducer body and cover. It is assumed that the conduit or cable connection is also sealed to IP 68. Supply Voltage BTL BTL BTL Vdc ± 20% ± 15 Vdc ± 2% ± 15 Vdc ± 30% 0.5V max ripple - 15 V Supply optional Current Draw 150 ma (at 1kHz sampling rate) 150 ma (at 1kHz sampling rate)

10 BTL-5- _ -M -J-DEXC-KL20 Ordering Code - Analog Output Output A= 0 to 10 Vdc B= -5 to +5 Vdc C= 0 to 20mA E= 4 to 20mA G= -10 to +10 Vdc Supply Voltage 1= +24 Vdc (± 20 %) 2= ±15 Vdc (± 2%) 5= ±15 Vdc (± 30%) B T L 5 - A M J - D E X C - K L 2 0 Output Signal Characteristic 1= increasing and decreasing (votage output only) 0= increasing only (current output) 7= decreasing only (current output) Metric (millimeters) Stroke Length (in millimeters) See table of standard lengths Housing Style J= Rod-Style, Smooth Flange, O-ring seal Rating Code DEX= Explosion-Proof - Class 1 Div 1, Groups A,B,C,D C= Float-Plug rod-end Electrical Connection Style KL20= Internal screw terminals, M20 x 1.5 thread fitting - see accessories page for adapter fitting Electrical Stroke

11 BTL-5- _ -M -J-DEXC-KL20 Ordering Code - Digital Pulse Output Output I B T L 5 - R 1 - M J - D E X C - K L E 8 = RS485 START/STOP (w/tri-state logic) K = RS422 STOP pulse L = PWM (no recirculations) M = RS422 START/STOP (leading edge active) N = single-ended START/ STOP (leading edge active) P = RS422 START/STOP (trailing edge active) R = PWM (with recirculations 1 ) Supply Voltage 1= +24 Vdc (± 20 %) 2= ±15 Vdc (± 2%) 5= ±15 Vdc (± 30%) Metric (millimeters) Stroke Length (in millimeters) See table of standard lengths Housing Style J= Rod-Style, Smooth Flange, O-ring seal Rating Code DEX= Explosion-Proof - Class 1 Div 1, Groups A,B,C,D C= Float-Plug rod-end Electrical Connection Style KL20= Internal screw terminals, M20 x 1.5 thread fitting - see accessories page for adapter fitting Interrogation Method and Number of Recirculations only valid for R output versions - otherwise, leave blank E= external interrogation I =internal interrogation 1 specify number of recirculations - 1 to 16 Electrical Stroke

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