TZID 分体型英文

Q��Communication based on the “HART“ protocol Q��High operational reliability through regular operational tests Q��Electronical adjustment of operating data, in parts automatic (autostroke) and in parts manual Q��Easily understandable adjustment mode, adjustment via the built-in operator panel or remotely using the standardized configuration program Q��Characteristic linear, equal percentage, or with 20 configurable reference points Q��Explosion protection certificates: CENELEC - FM - CSA and others, intrinsically safe and flameproof Q�� 4...20 mA input, 2-wire, Supply voltage 9.8 V or 10.8 V DC Q��Complies with the directives for EMC and CE conformity Q��Wide operating temperature range, - 40 bis + 85 °C Q��Robust aluminum or stainless steel case Q�� Influence of shock and vibration <1% with a load of up to 10 g and frequencies between 20 and 80 HZ Q��Non-contact (inductive) position sensor Q��Stable control loop through self-adaptation and continuous modulation of the output Q��Easy to install, all connections on ones side, separate terminal box for wiring Q��Attachment to linear or rotary actutators in accordance with the standard Q�� Low operating cost, air consumption only 0.03 kg/h, TZID and TZID Ex d Intelligent Positioner Meeting Highest Requirements 10/18-0.20 EN EP0005XA.TIF TZID Intelligent Positioner 10/18-0.20 EN Page 2 of 22 10.99 The concept The TZID positioner is an intelligent and electronically configurable device with communication capabilities. High-tech electronics are coupled with a robust and well-proven mechanical construction on the pneumatic side to obtain an optimal design of positioner. The functional heart of the TZID positioner is its CPU (see illustra- tion below). The mechanical and pneumatic assembly groups only have secondary functions. The input signal (set point) and the position (actual value) are fed into the processor via A/D converter. An output signal is computed on the basis of the control deviation and a PD control algorithm. The signal is output to an I/P module via a D/A converter and is used for analog modulation of the I/P module. The I/P module provides for pneumatic, analog adjust- ment of a 3/3 way valve. The cross-sectional area of the valve air ducts for filling the actuator with air or evacuating air from the actu- ator is changed in proportion with the adjustment. Continuous sig- nal modulation yields optimal results in terms of precise and rapid control until reaching the set point and in terms of the adaptation to actuators of different sizes and different supply pressures. The I/P conversion is done with the same I/P module as used for the TEIP 11 signal converter. This well-proven module is already used in the field more than 500.000 times and has an unequaled immunity to shock and vibration. The TZID positioner has a two-wire 4...20 mA input. The energy needed to power the electronic component parts is derived from the input signal. Compressed air (1.4....6 bar) is the only external energy required. The TZID has a low consumption of less than 4 mA due to the two-wire circuitry, and of only 0.03 kg compressed air per hour. A rotating feedback shaft for determining the position is the only moving part of the TZID. An inductive, non-contact sensor converts the position into an electrical signal. As a result, the wear-rate is very low. The TZID positioner provides for maximum operational reliability. Adherence to the EMC regulation ensures immunity to EMF and RFI. The robust IP 65 (NEMA 4X) metal case protects the TZID against harsh environments. Special functions for monitoring that the CPU works properly and that the control point is controlled cor- rectly deliver an alarm message if an error occurs. The TZID positioner is designed for the operating temperature range of -40 to +85 °C (-40 to +185 °F). Fig. 1 TZID schematic diagram Attachment The TZID can be attached to pneumatic actuators for linear (stroke) or rotary movement (angle of rotation), to actuators with spring return (single acting) or with double air action (double act- ing). The off-the shelf devices are designed for attachment conforming to the standard (lateral attachment to DIN/IEC 534 or attachment to rotary actuators to VDI/VDE 3845). Customized actuator-spe- cific versions for special attachment are available upon request. When mounting the positioner to an actuator, a rough balancing of the mechanical link for converting the stroke suffices. The wide usable range of the angle of rotation dispenses with the need for a time-consuming mechanical adjustment. The fine adjustment is done automatically through the autostroke. The air connections and the cable glands are located on the right hand side, making installation easy. NPT connections are provided for the air pipes, and screw terminals are available for connecting the electrical wires. EP0023EN.EPS FSK ASIC EEPROM D LKS connector Inductive sensor I/P module 4 ... 20 mA 9.8 V CPU Pneumatic output A Air supply A D Analog position feedback (optional module) Digital position feedback (optional module) 4 ... 20 mA MIN MAX Alarm / self-test Processor Construction and mode of operation 10.99 Page 3 of 22 TZID Intelligent Positioner 10/18-0.20 EN Matching to the operating conditions Various parameters can be set, helping the user to achieve optimal precise control until reaching the setpoint and a high operational reli- ability. The parameters can be changed while the positioner is on line and working, and are then immediately taken over. Operating parameters Q��Signal range 4 .. 20 mA or split-range Q��Valve action Direct: Range 4...20 mA/direction 0...100 % Reverse: Range 20...4 mA/direction 0...100 % Q��Characteristic curve (travel = f {positioning signal}) linear, equal percentage 1:25 or 1:50 or 25:1 or 50:1, or user-configurable with 20 reference points Q�� Tolerance band (sensitivity limit) The factory setting of 0.3 % is a typical value, which only has to be increased in case of very short strokes or high hysteresis values of the valve. Normaly, the controller automatically opti- mizes itself during the autostroke function. Q�� Travel limiting The positioning travel, i.e. the stroke or angle of rotation, can be reduced as required within the full range of 0...100%, provided that a minimum value of 20% is observed. Q��Shut-off value This function causes immediate closing of the actuator. The threshold can be configured. Fig. 2 IBIS window ”Device data“ Q�� Time-out monitoring This function is used to monitor the time needed to reach the set point. It triggers an alarm if the unit is not able to adjust the deviation such that it fits into the tolerance band within the set time. Q��Adjusted speed for full travel 100 % This function is used to increase the natural speed for control- ling the full travel until reaching the set point. The speed can be set independently for each direction. Q��Alarm limits for minimum and maximum positions This parameter is used to define the switching points for the minimum and the maximum position. Parameters for diagnosing the operating condition Prior to preventive maintenance you can make a diagnosis using the following data: Q��Counts for the individual control actions and the total displace- ment of the valve (valve stem). The values indicate the use of the valve. Limits can be defined for both counters. If the limits are exceeded, an alarm is generated Fig. 3 IBIS window ”Displacement meter“ Q��Record of the current control operation in tabular form. The de- fined signal and the controlled position are continuously listed with a high-resolution, adjustable cycle time of 40...160 msec. Q��Record of the transfer function in tabular form. The controlled position after a set point jump (position signal) is recorded with an adjustable high-resolution cycle time of 40...160 msec. The values saved in tabular form can be exported as an EXCEL file and can then be converted into a graphic display. Fig. 4 IBIS window ” Setpoint jump“ E P 00 07 E N .T IF EP 00 09 EN .T IF EP 00 09 EN .T IF Construction and mode of operation TZID Intelligent Positioner 10/18-0.20 EN Page 4 of 22 10.99 Monitoring functions The TZID positioner is permanently monitored while it is working. The following list gives some examples for errors that can be detected and indicated: – Watchdog alarm – Leakage in the actuator or air pipe – Signal < 4 or > 20 mA – Position out of adjusted range (rotation angle) for position feedback – User actions (manual) affecting CPU operation (controller is not active) – Positioning time-out (adjustable time parameter) – Limit of stroke counter or displacement meter exceeded (limits can be adjusted during diagnosis) If any of these troubles occurs, an alarm is generated and repor- ted, either by indication of an error code on the built-in display or via the option modules (if plugged in). Extended monitoring is possible via the communication port. The registered troubles are indicated as plain text in a special window (in online mode). Additionally, the most important process vara- iables like the output signal in mA, the position in % and the devi- ation are indicated. The operator can decide whether or not the above-listed troubles shall generate an alarm. This can be configured via the communi- cation port and,e.g., the special “Options” window of the IBIS con- figuration program (see. Fig. 5). Fig. 5 IBIS window ”Options“ Functional check When the option module for analog or for digital position feedback is connected, it can be checked for proper function and wiring. For this purpose, simulation values can be transmitted to the positio- ner, e.g. by using the “Simulation” window of the IBIS configuration program (see Fig. 6). While the simulation is active, the TZID posi- tioner is not working in control mode. After around 2 minutes the simulation is stopped automatically. It can also be terminated at any time by actuation of the “Cancel” button. Fig. 6 IBIS window ”Simulation“ Adjustment The following adjustment parameters are available: – Full travel of 100 % (stroke or angle of rotation) – Effective direction of the actuator (direction with compressed air or spring action) – Valve action (direction of action for opening/closing the valve) – Controller parameters Most of these parameters can be adjusted automatically by start- ing the autostroke function. Only the valve action needs to be adjusted manually. Fig. 7 IBIS window ”Adjustment“ EP0010EN.TIF EP 00 11 EN . TI F EP 00 12 EN . TI F Construction and mode of operation 10.99 Page 5 of 22 TZID Intelligent Positioner 10/18-0.20 EN General The TZID positioner has a built-in operator panel with special adjustment capabilities tailored to commissioning. The full range of TZID functions can only be accessed via the communication port. On the built-in operator panel you can make any adjustment that is necessary to commission the positioner after attachment to the actuator. The panel is intuitively operable. Short instructions printed on the panel contain the required information. The full range of functions described above is available via the communication port. Communication is based on the HART proto- col. Signals can be tapped either locally at the connector or fre- quency-modulated at any chosen point of the 4...20 mA signal transmission. Communication is done on line while the system is running, without impairing operation. New parameter settings become active immediately after being downloaded into the device, but have to be stored in the non-volatile memory with a special command. A special connector (LKS adapter or FSK modem), a standard off- the-shelf PC (which has to meet special hardware requirements), and a special software (e.g. IBIS or Smart Vision®) are needed. LKS adapter as communication link The LKS adapter is a connection solution which is both easy to install and cost-saving. On the TZID side a special connector (local communication interface) is used. On the PC side, a double sub-D connector with a 9-pole and a 25-pole connector is used. The con- nector also accommodates an RS 232 interface converter for con- nection to the PC. The TZID can be configured without requiring that a positioning signal is present. The CPU is powered by the PC. FSK modem as communication link The FSK modem allows digital frequency-modulated communica- tion (Frequency Shift Keying). The digital signal "0" corresponds to 2.2 kHz, the digital signal "1" to 1.2 kHz. Tapping is possible at any chosen point of 4...20 mA transmission, i.e. directly on site at the TZID or in any remote place, e.g. at a PLS in the control room. Fre- quency-modulated communication requires a circuit with a resis- tance of at least 250 ohms The FSK modem is available with or without electrical isolation. In conjunction with a special isolating amplifier - e.g. Contrans I or Contrans_remote - the model with electrical isolation is suitable for connection to a bus. Communication is also possible with a TZID with explosion protection, provided that the modem itself is placed outside the hazardous area. If these capabilities are not required, you can also use the cost-saving modem without electrical isola- tion (FSK Modem II). For details and technical data refer to data sheets 10/15-6.97 EN (FSK Modem) and 10/18-0.31 EN (FSK Modem II). _. Fig. 8 Communication via LKS adapter Fig. 9 Communication via Hart® protocol and FSK Modem T Z I D I B I S L K S DE0024XA.EPS I B I S T Z I D F S K m o d e mT a p a t t h e 2 s o c k e t s o n t h e T Z I D o r a t a n y c h o s e n p o i n t o f s i g n a l t r a n s m i s s i o n b e t w e e n t h e T Z I D a n d t h e s o u r c e . T Z I D C O N T R A N S I F S K m o d e mT a p a t a n y c h o s e n p o i n t o f s i g n a l t r a n s m i s s i o n b e t w e e n t h e i s o l a t i n g a m p l i f i e r C O N T R A N S I a n d t h e s o u r c e . ( C O N T R A N S I i s H A R Tfi c o m p a t i b l e ) T Z I D 4 . . . 2 0 m A 4 . . . 2 0 m A T Z I D 4 . . . 2 0 m A 4 . . . 2 0 m A F S K b u s w i t h i s o l a t i n g a m p l i f i e r C O N T R A N S I w i t h F S K c o n n e c t i o n . ( m a x . 1 6 0 0 n o d e s ) F S K m o d e m S o u r c e S o u r c e S o u r c e S o u r c e 2 5 0 o h m s 2 5 0 o h m s C O N T R A N S I C O N T R A N S I EP0025EN.EPS Operation and communication TZID Intelligent Positioner 10/18-0.20 EN Page 6 of 22 10.99 IBIS program The IBIS (Intelligent Broadcasting and Information System) pro- gram is a windows-type graphical user interface with user-friendly and intuitively operable standardized windows. IBIS offers com- fortable functions for configuring, monitoring and testing intelligent field and control room instruments. You can install and call up IBIS in different languages, select the communication interface as required, and protect access with a password. IBIS is controlled via mouse or keyboard. Context-sen- sitive on-line help can be called up for all menu items by pressing the < F1 > key. Further details are available upon request. Hardware requirements Computer PC/Notebook for DOS or WINDOWS, (IBM compatible) 386 or higher Operating system Microsoft DOS 3.2 or higher Microsoft WINDOWS 3.1 or higher RAM at least 640 Kbytes (580 Kbytes free) for DOS at least 4 Mbytes for WINDOWS Graphics card CGA, EGA, VGA or Hercules for DOS VGA for WINDOWS Hard disk at least. 2.5 Mbytes free memory Disk drive 3 1/2", 1.44 Mbytes Monitor Monochrome, color or LCD Interface RS 232 C for communication CENTRONICS for printer (optional) Fig. 10 Typical IBIS window Smart Vision® program The Smart Vision® program has the same "look" as "WINDOWS", i.e. it has similar intuitively operable windows, and commands can be entered in the same way. Everybody who is familiar with "WINDOWS" can easily work with Smart Vision® as well. There- fore, you have to refer to the user’s guides only every now and then. The Smart Vision® communication program can be used with our HART compatible devices. Due to its open structure Smart Vision® allows communication with other devices as well. Defined com- mands can be realized easily by using available tools and without requiring major efforts. Smart Vision® enables: Q��Configuration or setting of parameters of the devices Q��Display of measured values digitally, as bargraph display or as trend display (curve) Q��Diagnosis and retrieval of status messages Q��Storage of data, e.g. of configuration data of the device Q��Data output, e.g. to the printer Q��Planning and administration of TAGs Further details are available upon request. Hardware requirements Computer PC/Notebook for WINDOWS (IBM compatible) 486 or higher Operating system Microsoft WINDOWS 3.1 or higher Microsoft WINDOWS 95 or WINDOWS NT Hard disk at least 2 Mbytes of free memory RAM at least 500 Kbytes of free memory Disk drive 3 1/2" (1.44 MB) or CD ROM Interface RS 232 C for communication Fig. 11 Typical Smart Vision® window EP0013EN.TIF EP0014EN.TIF Programs 10.99 Page 7 of 22 TZID Intelligent Positioner 10/18-0.20 EN Input Signal range Nominal range 4...20 mA Split ranges configurable between 20 and 100 % Two-wire circuitry Supply voltage 9.8 VDC without explosion protection 9.8 VDC with Ex d approval 10.8 VDC for intrinsically safe device Resistance 490 ohms at 20 mA and 9.8 VDC 540 ohms at 20 mA and 10.8 VDC Output Signal range 0...6 bar (0...90 psi) Air capacity At supply pressure of 1.4 bar (20 psi) 5.5 kg/h = 4.5 Nm3/h = 2.5 scfm At supply pressure of 6 bar (90 psi) 13 kg/h = 11 Nm3/h = 6.5 scfm (Booster for increase of capacity available on request) Action Single or double, air is evacuated from actuator or actuator is blocked in case of (electrical) power failure Shut off value Setable to 0...20 % of positioning signal (if the value falls below the set value, the positioner immediately sets the actuator to the closed position) Stroke movement Angle of rotation 60 ° nominal range for attachment to linear actuators in accordance with DIN/IEC 534 120 ° nominal range for attachment to rotary actuators in accordance with VDI/VDE 3845 Used range is 20...100 % of nominal range Adjusted speed Range 0...200 sec, individually configurable for each direction Time-out monitoring Range 0...200 sec (monitoring parameter for control until the deviation is within the tolerance band) Stroke limiting Min. and max. limits, setable between 0 and 100 % of the stroke Air supply Instrument air free of oil, water and dust to DIN/ISO 8573-1 pollution and oil contents according to Class 3 dew point 10 K below operating temperature Supply pressure 1.4...6 bar (20...90 psi) Caution: Do not exceed the max. working pressure of the actuator! Air consumption < 0.03 kg/h (independent of supply pressure) Transmission data and influences Effective direction (output signal or pressure in actuator) Increasing: Increasing signal 4...20 mA Increasing pressure y1 in actuator Decreasing:Increasing signal 4...20 mA Decreasing pressure y1 in actuator Valve action Direct:Range 4...20 mA = position 0..100 % Reverse:Range 20...4 mA = position 0..100 % Characteristic curve (travel = f{signal}) linear, equal percentage 1:25 or 1:50 or 25:1 or 50:1, or user-configurable with 20 reference points Characteristic deviation < 0.5 % Dead band (sensitivity) Adjustable from 0.3...10 % Resolution (A/D conversion) > 8000 steps Sample rate 20 msec Influence of ambient temperature < 0.5 % for every 10 K Influence of vibration < 1 % up to 10 g and 20...80 Hz Seismic requirements Meets requirements of DIN/IEC 68-3-3 class III for strong and strongest earthquakes Influence of mounting orientation No effect EMC Meets EMC directive 89/336/EEC as of May 1989 CE mark Meets