Type µp transmitter / controller for ph value. B Operating Instructions /

Transcription

1 Type µp transmitter / controller for ph value B Operating Instructions /

2 All the necessary settings and, where appropriate, alterations inside the unit are described in this operating manual. If any problems should arise during start-up, do no carry out any unauthorized manipulations on the unit. This endangers your rights under the warranty! Please contact the nearest subsidiary or the main factory. When returning chassis, modules or components, the rules of EN Protection of electrostatically sensitive components must be observed. Use only the appropriate ESD packaging for transport. Please note that we cannot be held liable for any damage caused by ESD (electrostatic discharges)

3 Contents Page Typographical conventions 3 Application 4 Instrument identification 5 Delivery package 5 Type code 6 Instrument description 7 Technical data 7 Dimensions 10 Assembly 12 Location 12 Installation 14 Electrical connection 14 Connection diagram 16 Assembling the BNC connector 17 Starting up 18 Self-test 18 Operation 19 Basics 19 Operation principle 20 General 22 Programming 23 Controller 24 Configuring 24 Optimising 26 Calibration 27 Preparation 27 Single-point calibration 29 Dual-point calibration 30 Operating level 31 Settings 31 Parameter level 32 Settings 32

4 Contents Page Configuration level 34 General 34 Analogue inputs C Logic inputs... C Serial interface... C Controller options C Controller outputs C Other outputs C SoL - SoH - OFFS - null 41 SLoP 42 Manual operation 43 Hold / Version 44 Logic inputs 45 Functions 45 Interface 46 MOD/Jbus 46 Glossary 47 Warnings Errors 53 Messages 53 Appendix 55 Programming the controller 55

5 Typographical conventions Warning signs Danger This sign is used when there may be danger to personnel if the instructions are disregarded or not followed accurately. Warning This sign is used when there may be damage to equipment or data if the instructions are disregarded or not followed accurately. Note signs Note This symbol is used when your attention is drawn to a specific remark. see abcd Reference Text in italics refers to further information in other chapters or sections. abc 1 Footnote Footnotes are notes which refer to certain points in the text. Footnotes consist of two parts: Marking in the text and the footnote text. The markings are arranged as continuous raised numbers. The footnote text (in smaller typeface) is placed at the end of a section and starts with a raised number. Action This sign is used when an action to be performed is described. The individual steps are marked by this asterisk. Example: Press key EXIT + PGM Key combination The representation of keys together with a plus sign means that first the EXIT key has to be pressed and held down, and then a further key is pressed. 3

6 Application Type The compact microprocessor transmitter/controller with 96mm x 48mm bezel size and plug-in controller chassis measures and controls the ph value or the redox potential (depending on the configuration) in aqueous solutions. The transmitter has two analogue and two logic inputs. The first analogue input is suitable for connecting a ph combination electrode or a glass and reference electrode (also antimony), a redox combination electrode or a metal and reference electrode. The second analogue input can be used to connect Pt100 or Pt1000 resistance thermometers. The instrument features two 4-digit 7-segment displays for indicating the ph or redox-potential process value (red) and the temperature (green). During programming, the displays provide comments on the inputs. The two controller relays can be configured as a limit controller and/or pulse duration or pulse frequency controller with P, PI, PD or PID structure. A maximum of two relay make contacts, one logic output, one analogue process value output and one serial interface is available. The instrument can be supplied with an additional relay changeover contact instead of the analogue process value output. An RS422 / RS485 interface for integration into a data network is available as an option. The MOD/Jbus protocol is used. Operating Instructions B The Operating Instructions B (Part No ) apply only to the functions of the microprocessor transmitter/controller configured as a ph transmitter/ controller. If the microprocessor transmitter/controller is configured as a redox transmitter/controller, then the Operating Instructions B (Part No ) must be used. These Operating Instructions provide comprehensive information on the installation, electrical connection, commissioning, operation, parameter setting and configuration of the Type µp transmitter/controller for ph value. All necessary settings are described in these Operating Instructions. If any problems should occur during start-up, do not carry out any unauthorised manipulations on the unit, as this could endanger your rights under the instrument warranty. Please contact your supplier. 4

7 Instrument identification Delivery package Check for completeness You should have received at least the following: - microprocessor transmitter/controller for ph value or redox potential - 2 mounting brackets - 1 BNC connector - seal (housing/panel) - Operating Instructions B and B Label The label is glued to the housing. Made in Germany Typ / /000 ph: -1, ,00 / Redox: mv Pt100 / Pt1000: -50, ,0 C K1 / K2: Relais 3A; AC 250V; ohm. Last K4: Binärausgang DC 0 / 5V AC Hz, V +10/-15%, 8 VA VARTN 20/ F Nr (1) Fig. 1 Label (1) Type code (for explanation, see next page) The type designation contains all factory settings, such as the controller function, the measurement inputs and extra codes. The extra codes are listed in sequence and separated by a comma. The supply voltage must correspond to the voltage given on the label. 5

8 Instrument identification Type code Type designation / /...,... Basic type I microprocessor transmitter/controller for ph value or redox potential l Basic type additions l 00 controller off 1 I 10 limit controller 1 (output 1/2) I 21 pulse duration output with P controller structure 1 (output 1/2) I 31 pulse frequency output with P controller structure 1 (output 1/2) l l Outputs l l 000 no output l l 310 relay, changeover contact (output 3) 3 l l 888 process value output, freely configurable (output 3) 3 l l l Supply l l l V AC/DC ±0% 48 63/0 Hz l l l V AC +10%/-15% Hz l l l l Interface l l l l 00 no serial interface l I l I l I l I 54 RS422/485 serial interface (output 5) l l l l l Extra codes 2 l l l l l 000 no extra codes l I I l I I l I I l I I l I I 015 logic output 0/12 V DC, instead of standard 0/5 V DC (output 4) I I I I I I / / Generally, the following configurations can be freely selected by the user on all instruments Type : Controller off Limit controller Pulse duration controller with P, PI, PD, PID control Pulse frequency controller with P, PI, PD, PID control The variations listed in the type designation are only factory default settings. 2 Extra codes can be combined listed in sequences and separated by a comma. 3 Output 310 not available in combination with output 888! 6

9 Instrument description Technical data Analogue input 1 Analogue input 2 Lead compensation analogue input 2 Logic input 1 Input impedance Ω Insulation resistance of the reference system connection to earth greater than 10 7 Ω to DIN For all conventional ph electrodes, ph antimony electrodes, metal electrodes, reference electrodes or combination electrodes. Pt100 or Pt1000 resistance thermometer in 2-wire or 3-wire circuit 50 to +250 C measurement display in C or F The lead resistance can be compensated in the software by process value correction. This is not required when connecting a resistance thermometer in 3-wire circuit. Alternatively, when connecting a resistance thermometer in 2-wire circuit, lead compensation can be provided by using an external lead compensation resistor. The following functions can be allocated as selected: Key inhibit, setpoint switching, alarm stop, hold, freeze measurement, range expansion (x 10), logic input 1 no function. Logic input 2 as logic input 1 Measurement and control range Deviation from characteristic Ambient temperature error Temperature indication Deviation from characteristic ph freely selectable 0.25% of range 0.15% per 10 C -50 to +250 C (optionally F) 0.25% of range 7

10 Instrument description Technical data Outputs 1.) Relay, output 1 / 2 (standard) 2.) Logic output, output 4 (standard) 3.) Process value output, output 3 (option) 4.) Relay, output 3 (option) 5.) RS422/RS485 interface; output 5 (option) 5 outputs are available: Make contact (n. o., can also be configured as n. c.) Contact rating: 3A, 250V AC, with resistive load Contact life: more than 5x10 5 operations at rated load Status indicators: relay K1 => LED K1; relay K2 => LED K2 0/5V (standard) R load 250Ω 0/12V (option) R load 650Ω Status indicator: LED K4 0(2) 10V R load 500Ω 0(4) 20mA R load 500Ω isolated from the inputs: U 30V AC U 50V DC (only on instruments without process value output) Changeover contact Contact rating: 3A, 250V AC, with resistive load Contact life: more than 5x10 5 operations at rated load Status indicator: LED K3 electrically isolated; Baud rate: 4800 / 9600bps; Protocol: MOD/Jbus General controller data A/D converter Controller type Control action Sampling time Measurement circuit monitoring Data backup Supply Power consumption resolution better than 15 bit Limit controller and / or pulse duration or pulse frequency controller, freely configurable and selectable P, PI, PID or PD freely configurable and selectable 210msec Input 1: out-of-range Input 2: out-of-range, probe short-circuit, probe break The outputs move to a defined (configurable) state. EEPROM V AC +10%/-15% Hz or V AC/DC ±0% 48 63/0 Hz approx. 8VA 8

11 Instrument description Technical data Electrical connection Permitted ambient temperature Permitted limit ambient temperature Permitted storage temperature Climatic conditions Protection Electrical safety Electromagnetic compatibility Housing Operating position Weight via gold-plated faston connectors to DIN /A; 4.8mm x 0.8mm ph combination or glass electrode, or metal combination or metal electrode via BNC connector 0 to +50 C -10 to +55 C -40 to +70 C rel. humidity not more than 75%, no condensation to EN , front IP65 / rear IP20 to EN , clearance and creepage distances for - overvoltage category II - pollution degree 2 to NAMUR recommendation NE21; EN Part 1; EN Part 2 for flush-panel mounting in conductive plastic to DIN , base material ABS, with plug-in controller chassis unrestricted approx. 320g 9

12 Instrument description Dimensions Type /... Optional accessories Additional housing, no door at front, Protection IP65, Type 2FGE-125-2/125 Limited external temperature range! The ambient temperature of the surface-mounting housing must not exceed 45 C. 10

13 Instrument description Dimensions Additional housing with door at front, Protection IP65, Type 2FGE-150-2/185 Limited external temperature range! The ambient temperature of the surface-mounting housing must not exceed 45 C. 11

14 Assembly Conditions Location The location should be as free from vibration as possible. Electromagnetic fields, for instance from motors, transformers, etc., should be avoided. The ambient temperature at the location can be between 0 50 C, at a relative humidity of not more than 75 %. Panel cut-out for edge-to-edge mounting Fig. 2 Panel cut-out Fitting into position (1) Fig. 3 Fitting into position Place the seal supplied (1) onto the instrument body. Insert the controller from the front into the panel cut-out. From the rear of the panel, slide the mounting brackets into the guides at the sides of the housing. The flat sides of the brackets must be against the housing. Place the mounting brackets against the rear of the panel and tighten them evenly with a screwdriver. 12

15 Assembly Cleaning the front panel Location The front panel can be cleaned with normal washing, rinsing and cleaning agents. It has a limited resistance to organic solvents (e. g. methylated spirits, white spirit, P1, Xylol etc.). Do not use high-pressure cleaning equipment! Removing the controller chassis Fig. 4 Removing the controller The controller chassis can be taken out of the housing for servicing. Disconnect the BNC connector on the rear of the instrument! Press together the ribbed surfaces right and left on the front panel and pull out the controller chassis. 13

16 Installation Electrical connection The electrical connection must only be carried out by properly qualified personnel! The choice of cable, the installation and the electrical connection must conform to the requirements of VDE 0100 Regulations on the installation of power circuits with nominal voltages below 1000 V, or the appropriate local regulations. The electrical connection must only be carried out by properly qualified personnel. If contact with live parts is possible, isolate the instrument completely from the supply. A current limiting resistor interrupts the supply circuit in the event of a short circuit. An additional external fuse of the supply should not be rated below 1 A (slow). The load circuit must be fused for the maximum relay current in order to prevent welding of the output relay contacts in the event of a short-circuit. The electromagnetic compatibility conforms to the standards and regulations listed under Technical data, see Instrument description / Technical data / Electro- magnetic compatibility, page 9. Run input, output and supply lines separately and not parallel to each other. Sensor and interface lines should be arranged as twisted and screened cables. Do not run them close to current-carrying components or cables. Earth the screen at one end on the instrument to terminal TE. Earth the instrument at terminal TE to the earth conductor. This line should have at least the same cross-section as the supply lines. Earth lines should be run in a star layout to a common earth point which is connected to the earth conductor of the supply. Do not loop the earth connections, i. e. do not run them from one instrument to another. Do not connect any additional loads to the supply terminals of the instrument. The instrument is not suitable for installation in hazardous areas. Apart from faulty installation, there is a possibility of interference or damage to controlled processes due to incorrect settings on the controller (setpoint, data of parameter and configuration levels, internal adjustments). The setpoint reached should therefore be monitored for stability. Safety devices independent of the controller, such as overpressure valves and temperature limiters/monitors should always be provided and should be capable of adjustment only by specialist personnel. Please refer to the appropriate safety regulations in this connection. The measurement inputs of the controller must not exceed a maximum potential of 30 V AC or 50 V DC against TE. Sensor lines should only be run as unbroken leads (do not run them via modular terminals, etc.). 14

17 Installation Electrical connection After the supply voltage has been connected, the microprocessor transmitter/ controller will control according to the factory-set parameters (unless the instrument was ordered with the controller off ). Therefore, it is advisable to program the microprocessor transmitter/controller with the required parameters before connecting the actuators, see Operation, 19 ff. Connection diagram N L1 (L-) (L+) TE BNC-Buchse connector Fig. 5 Rear view with faston / BNC connectors Outputs Terminals Diagram Relay 1 (K1) Status indicator LED K common n. o. (make) Relay 2 (K2) Status indicator LED K2 Relay 3 (K3) Status indicator LED K3 or process value output common n. o. (make) n. c. (break) common n. o. (make) P NO P NO P NC NO Logic output 1 (K4) Status indicator LED K

18 Installation Connection diagram Inputs Terminals Diagram ph combination BNC connector electrode ph electrode with separate reference system BNC connector Reference electrode 8 Resistance thermometer in 3-wire circuit ϑ Resistance thermometer in 2-wire circuit R comp R line ϑ RS422 serial interface (option) RxD 5 4 RxD + RxD Receive data TxD 2 TxD + Transmit data 1 TxD GND 3 GND RS485 serial interface (option) TxD/RxD + TxD/RxD GND 3 GND Logic input Logic input Supply see label AC/ DC AC: L1 line DC: L + L1 N L+ L- TE N neutral L TE technical earth 16

19 Installation Assembling the BNC connector Procedure. 7 Fig. 6 Assembling the BNC connector, step 1 Strip the external insulation from the cable Fig. 7 Assembling the BNC connector, step 2 Push the cable through the screw fitting (1), washer (2), seal (3) and braid clamp (4). Spread the braiding over the braid clamp (4). Cut off any extra braiding. Remove the black, part-conductive coat. Remove the inner insulation. (1) (2) (3) (4) (5) (6) (7) (8) Fig. 8 Assembling the BNC connector, step 1 Do not use solder flux! Solder the contact (7) to the inner conductor (6). Push the connector body (8) onto the cable, engaging and tightening the screw fitting (1). 17

20 Starting up Self-test After the supply voltage has been connected, the microprocessor transmitter/ controller will control according to the factory-set parameters. (unless the instrument was ordered with the controller off ) Therefore, it is advisable to program the microprocessor transmitter/controller with the required parameters before connecting the actuators, see Operation, 19 ff. After power-on OK the instrument performs a self-test; all displays light up. If the self-test is successful, the instrument will switch over to measurement mode after approx. 10 seconds. The measured ph value and if a temperature probe is connected and configured the measured temperature will be displayed; the controller operates according to the factory-set parameters. In measurement mode, manual operation, hold and calibration can be activated, and the software revision number and the unit ( C / F) of the temperature input can be displayed. Error If an error code (e.g. F010) or Err is displayed, see Warnings Errors / Messages, page 53 ff. 18

21 Operation Basics Displays and keys (1) (2) (8) ph mv ORP K1 K2 K3 K4 (3) (7) C CAL PGM EXIT (4) (5) (6) (1) Display: instrument was reconfigured from redox to ph (2) Status indicators (yellow) for the outputs 1 to 4 1 LED K1 => relay K1 LED K2 => relay K2 LED K3 => optional relay K3 LED K4 => logic output K4 (3) Increment key for altering parameters or manual operation of relay K2 (4) Decrement key for altering parameters and for manual operation of relay K1 (6) PGM key for selection of parameters and confirmation of inputs (7) 4-digit temperature display (LED, green, 8mm high) (Only active when temperature measurement has been configured (C111)) (8) 4-digit process value display (LED, red, 13mm high) 1 LED K3 has no function, if the instrument was ordered with process value output (output 888 ). (4) + (6) (5) EXIT key to leave the levels (3) + (5) CAL : initiating electrode calibration (single-point or dual-point calibration) Initiating manual operation or hold. 19

22 Operation Operation principle Operating modes and states Measurement mode (normal operation) Self-test (after power-on) Manual operation Hold operation Operation, parameters, configuration Error The process value and the temperature are displayed. All displays light up; the temperature display blinks. The process value indication continually switches between displaying the process value and HAnd ; the temperature is displayed. The process value indication continually switches between displaying the process value and HoLd ; the temperature is displayed. The temperature display shows the parameters from the various levels; the process value display shows the corresponding values and codes. The temperature display continually switches between the temperature and the error code (e.g. F010), see Warnings Errors, 53. Levels The functions of the dtrans ph01 are arranged in four levels (see diagram on following page): - Measurement mode - Operating level - Parameter level - Configuration level Measurement mode 1 (normal operation) This level is available for displaying the measurements. Manual operation, hold, and calibration can be activated. Operating level 1 The setpoints, alarm tolerance, alarm delay time and the limit value for the temperature limit comparator can be entered and displayed at this level. Parameter level 1 The controller parameters and other settings are programmed at this level. The display of the individual parameters depends on the controller type. Configuration level 1 At this level, the basic functions of the instrument are configured. 1 Inputs are only possible after the correct code word has been entered, see Operation / Programming / Enabling the levels, page

23 Operation Operation principle Operation within levels Measurement mode < 1 sec > 2 sec Operating level or time-out > 2 sec Parameter level or time-out > 2 sec Configuration level or time-out 1 A change of level occurs only after stepping through all the parameters of the relevant level. 21

24 Operation General Level protection At the operating level, parameter level and configuration level, changes can only be made after entering a code word, see Operation / Programming / Enabling the levels, page 23. The code word has been input correctly if the decimal point on the temperature display begins to blink after selection of the parameter that is to be modified. Within each level, the next parameter is selected by pressing the PGM key. Cancel The measurement mode can be returned to at any time by pressing the EXIT key. Parameters which have been modified but not confirmed with PGM will not be accepted. Time-out The controller will automatically return to measurement mode if no operation is performed for 30 seconds. Modified parameters which have not been confirmed with PGM will not be accepted. Exception: No time-out will occur during calibration. Entering parameters The input and modification of parameters and setpoints is continuous. The rate of change of the value increases with the length of time that the key is pressed. Increase value with Decrease value with The value is altered only within the permissible range of values. Accept the input with PGM the upper display will wink to confirm (the display switches off briefly) or cancel with EXIT Entering the configuration code or code word Select digit with (digit blinks). Alter the code with Accept the setting with PGM the upper display will wink to confirm (display switches off briefly) or cancel with EXIT 22

25 Operation Programming Procedure Fold out the last page of these operating instructions, see Appendix / Programming the controller, page 55 ff. Enter all parameter values and codes that are to be changed in the table Enable all affected levels, see below Program all settings from top to bottom Inhibit all levels, see below Af Depending on the configured controller type, some controller parameters cannot be set and will not be displayed. After altering the controller type (C211), the controller parameters must be checked, see Parameter level / Settings, page 32 ff. Enabling the levels Initial conditions: the instrument is in the measurement mode. Press the PGM briefly as many times as are required until CodE appears in the lower display. Set the required code word using the or keys. Function Code word 1 Enable operating level, CAL and manual activation of 0110 hold Enable operating and parameter levels 0020 Enable all levels 0300 Activate edit protection xxxx 2 Press PGM key (confirmation) 0000 will be displayed The code word has been entered correctly if the decimal point blinks in the temperature display after selection of the parameter that is to be altered. 1 Code word 0020 includes 0110; code word 0300 includes 0020 and The levels concerned remain enabled until the edit protection is reactivated either by entering an invalid code word (except 0000) or the power supply of the instrument is switched off and then back on again. 23

26 Controller Configuring For an explanation of the terminology used, see Glossary, page 47 ff. Possible combinations The functions of the contacts K1 and K2 can be freely combined: - Controller off - Limit controller - Pulse duration controller - Pulse frequency controller The controller functions are determined by the following parameters: Configuration level 1 Parameter level 2 Operating level 3 C211 C212 C212 Controller off Limit controller Pulse duration controller Pulse frequency controller MIN/MAX contact MIN /MAX contact MIN/MAX contact make/break contact make/break contact make/break contact 1 see Configuration level / Controller options C211, page 38 or see Configuration level / Controller outputs C212, page see Parameter level, page 32 ff. 3 see Operating level, page 31 ff. Differential HYS Pull-in delay Ond Drop-out delay Ofd Proportional band Pb Derivative time dt Reset time rt Minimum ON time tr Pulse period CY Output limit Y1 or Y2 Proportional band Pb Derivative time dt Reset time rt Minimum pulse duration tr Maximum pulse frequency Fr Output limit Y1 or Y2 Setpoint SP(r) Setpoint SP(r) Setpoint SP(r) 24

27 Controller Example for make/ break contact process value Range I Range II Range III Configuring w 2 w 1 t MIN MAX Range I Range II Range III LED Contact LED Contact LED Contact Make contact on 1 off 0 off 0 Break contact on 0 off 1 off 1 Make contact off 0 off 0 on 1 Break contact off 1 off 1 on 0 Configuration notes Both outputs (K1 / K2) can be configured as pulse duration or pulse frequency outputs (or in combination). Switching function K1 / K2 min / min min / max max / max max / min Setpoints w1 / w2 w1 < w2 w1 < w2 w1 > w2 w1 > w2 25

28 Controller Optimum adjustment Optimising The optimum adjustment of the controller to the control loop can be monitored by recording the start-up phase. The following diagrams (referred to the PID action) indicate where the adjustments may be incorrect and how they can be rectified. It can be seen that a more stable and steady control action can be achieved by increasing both the proportional band Pb and the reset time rt. A smaller proportional band Pb and / or a shorter reset time rt will result in a control action with less damping. optimum rt, dt too small rt, dt too large Pb too small Pb too large 26

29 Calibration Preparation General Single-point calibration Dual-point calibration Manual input Temperature The electrode parameters of a ph combination electrode are subject to manufacturing tolerances and variations depending on usage. To compensate for these changing electrode parameters, the transmitter offers two calibration procedures: Single-point calibration makes a fresh determination of the electrode zero point only, by using a buffer solution (solution with a known ph value). Problems arising from an erroneous electrode slope will not be recognised. This method should only be adopted in cases where the electrode is not subject to significant chemical and mechanical influences. Dual-point calibration makes a fresh determination of the electrode zero point and slope using two buffer solutions. This method should be given preference! In addition to the calibration procedures described above, the transmitter also offers the facility of manually entering the zero point and slope (as determined by a laboratory, for example). The measurement of the ph value depends on the temperature; the temperature of the measurement solution must therefore be known when calibrating. The temperature can either be measured automatically using a Pt100 or Pt1000 temperature probe, or it has to be set manually by the user. Cancel To return to measurement mode at any time, press EXIT. Preparation for calibration Before the first calibration the following will have to be defined: - The type of temperature measurement during calibration, and - the calibration procedure (single-point or dual-point calibration, and whether or not the process value output is to be frozen during calibration). If subsequent calibration procedures are to be performed with the same settings, the parameters mentioned above must not be reconfigured again. 27

30 Calibration Preparation Select type of temperature measurement The instrument is in measurement mode. Unlock the configuration level, if required, see Operation / Programming / Enabling the levels, page 23. (code word 0300) Press the PGM key twice for longer than 2 seconds to access the configuration level. The lower display shows C111. Set the configuration code using the and keys. Type of temperature measurement X X X 0 Manual temperature compensation 0 Automatic temperature compensation with Pt100 1 Automatic temperature compensation with Pt Press the Press the PGM EXIT key (confirmation) key (back to measurement mode) Calibrating with or without frozen process value output When the process value output is frozen, the output signal during calibration will remain at the value that was produced immediately before the start of calibration. This ensures that any PLC connected to the transmitter does not react in an uncontrolled manner during calibration. With the process value output frozen, the lower display will indicate done after the last calibration step, while the upper display will show the current measured value. The process value output remains unchanged. After the electrode has been refitted, the PGM key has to be pressed again. Then the process value output will again be coupled to the display. Factory setting: Calibrating without frozen process value output. Select calibration procedure Press the PGM key as often as required until the lower display shows C211. Set the configuration code using the and keys. Calibration procedure X X 0 X Single-point calibration, process value output not frozen 0 Single-point calibration, process value output frozen 1 Dual-point calibration, process value output not frozen 2 Dual-point calibration, process value output frozen 3 Press the Press the PGM EXIT key (confirm entry) key (back to measurement mode) 28

31 Calibration Single-point calibration Required is - a buffer solution with a ph value which roughly corresponds to the medium that is to be measured later, - a thermometer, if manual temperature compensation is required, - a Pt100 or Pt1000 temperature probe, if automatic temperature compensation is needed. Initial conditions A ph combination electrode or a glass and a reference electrode are connected to the transmitter Type , as well as a Pt100 or Pt 1000 temperature probe, if required, see Installation / Electrical connection, page 14 ff. Select calibration procedure, see Calibration / Preparation, page 27 ff. The operating level is unlocked, see Operation / Programming / Enabling the levels, page 23. (Code word 0110) The instrument is in measurement mode, see Operation / Basics / Operating modes and states, page 20. Calibration Press the PGM + (Cal) keys The lower display shows C. If the decimal point flashes, then manual temperature measurement is configured: Immerse the ph electrode and, if applicable, the temperature probe in the buffer solution. Adjust the temperature of the buffer solution using the or keys. If the decimal point does not flash, automatic temperature measurement has been configured. Wait until the temperature indicated has stabilised. Press the PGM key The lower display shows Cal0 with the decimal point flashing. When the ph value display has stabilised, set the displayed value to the value of the reference buffer using the or keys. Press the PGM key. The instrument stores the new zero point. The instrument is again in measurement mode. If, on completion of calibration, the instrument shows Err in the temperature display, see Warnings Errors / Messages, page

32 Calibration Dual-point calibration Required is - a buffer solution, e. g. ph 7, - a buffer solution with a ph value that differs from the first buffer solution by at least 2 ph, for instance ph 10. Both buffer solutions must have the same temperature; - a thermometer, if calibration with manual temperature compensation is performed, and - a Pt100 or Pt1000 temperature probe, for calibration with automatic temperature compensation. Initial conditions A ph combination electrode, or a glass and a reference electrode, are connected to the transmitter Type , and, if required, a Pt100 or Pt 1000 temperature probe, see Installation / Electrical connection, page 14 ff. Select calibration procedure, see Calibration / Preparation, page 27 ff. The operating level is unlocked, see Operation / Programming / Enabling the levels, page 23. (Code word 0110) The instrument is in measurement mode, see Operation / Basics / Operating modes and states, page 20. Calibrating Press the PGM + (Cal) keys. The lower display shows C. If the decimal point flashes, then manual temperature measurement is configured. Immerse the ph electrode and, if applicable, the Pt100 or Pt1000 temperature probe in the first buffer solution (ph 7). Adjust the temperature of the buffer solution using the or keys. If the decimal point does not flash, then automatic temperature measurement has been configured. Wait until the temperature indicated has stabilised. Press the PGM key. The lower display shows Cal0 with the decimal point flashing. After the display of the ph value has stabilised, set the displayed value to the value of the first reference buffer solution using the or keys. Press the PGM key. The lower display shows Cal1 with the decimal point flashing. Remove the ph electrode and, if applicable, the temperature probe from the first buffer solution and rinse it with water. Immerse the ph electrode and, if applicable, the Pt100 or Pt1000 temperature probe in the second buffer solution. After the ph value display has stabilised, set the displayed value to the value of the second reference buffer using the or keys. Press the PGM key. The instrument stores the new zero point, as well as the new slope. The instrument is again in measurement mode. 30

33 Operating level Settings Preconditions To see how to access the operating level, or how to leave this level, see Operation / Operation principle, page 20 ff. The operating level must be unlocked, see Operation / Programming / Enabling the levels, page 23. (Code word 0110) Depending on the controller function that was configured, not all of the following parameters will be required and will also not be displayed by the dtrans ph 01. For an explanation of the terminology used, see Glossary, 47 ff. How to configure controllers, see Controller / Configuring, page 24 ff. Designation Display Value range Factory setting displayed when... is configured see configuration code Setpoint 1 SP(r) K1 C211 Setpoint 2 SP(r) K to 14,00 ph Setpoint 3 SP(r) Setpoint switching C112 Setpoint 4 SP(r) Code word CodE 4-digit 0000 Temperature for InP2 ( C) 25 C111 compensation (manually-set or automatic, depending on configuration) Alarm tolerance AL to ph 0 Controller alarm C211 or Alarm delay AL2 0 to 9999 sec 300 messages C213 Alarm temperature AL3-50 to +250 C 250 Limit comparators for temperature C211 or

34 Parameter level Settings If many instrument parameters have to be reconfigured, see Appendix / Programming the controller, page 55 ff. Preconditions How to access the parameter level, or how to leave this level, see Operation / Operation principle, page 20 ff. The parameter level must be unlocked, see Operation / Programming / Enabling the levels, page 23. (Code word 0020) Depending on the controller function that was configured, not all of the following parameters will be required and will also not be displayed by the dtrans ph 01. For an explanation of the terminology used, see Glossary, 47 ff. How to configure controllers, see Controller / Configuring, page 24 ff. Parameter Display Value range Factory setting is displayed when... is configured Proportional band1 Pb1 Relay 1, pulse 0.01 to ph 7.00 frequency/duration Proportional band 2 Pb2 Relay 2, pulse frequency/duration Derivative time 1 dt1 Relay 1, pulse frequency/duration Derivative time 2 dt2 Relay 2, pulse 0 to frequency/duration 0 Reset time 1 rt sec Relay 1, pulse frequency/duration Reset time 2 rt2 Relay 2, pulse frequency/duration Minimum ON time 1 tr1 Relay 1, pulse duration (for limit controller or pulse duration controller) or minimum pulse pulse frequency duration 1 (for pulse frequency controller) Minimum ON time 2 (for pulse duration controller) or minimum pulse duration 2 (for pulse frequency controller) tr2 0.2 to sec 0.2 Relay 2, pulse duration pulse frequency see configuration code C211 32

35 Parameter level Parameter Display Value range Factory setting is displayed when... is configured Differential 1 HYS to ph 0.30 Relay 1, limit value Differential 2 HYS2 Relay 2, limit value Pull-in delay 1 Ond1 Relay 1, limit value 1.0 Pull-in delay 2 Ond to Relay 2, limit value Drop-out delay 1 Ofd sec Relay 1, limit value 0.2 sec Drop-out delay 2 Ofd2 Relay 2, limit value Maximum pulse Fr1 Relay 1, pulse frequency frequency 1 0 to 150 Maximum pulse Fr2 pulses/min 100 Relay 2, pulse frequency frequency 2 Pulse period 1 CY1 1.0 to sec 20.0 Relay 1, pulse duration Pulse period 2 CY2 Relay 2, pulse duration Output limit Y1 Relay 1, pulse relay 1 0 to frequency/duration 100 Output limit Y2 100% Relay 2, pulse relay 2 frequency/duration Filter constant df 0 to sec Settings see configuration code C211 33

36 Configuration level General At the configuration level, the basic functions of the microprocessor transmitter/controller can be displayed and / or altered. If many instrument parameters have to be reconfigured, see Appendix / Programming the controller, page 55 ff. For an explanation of the terminology used, see Glossary, 47 ff. How to configure controllers, see Controller / Configuring, page 24 ff. Preconditions How to access the configuration level, or how to leave it, see Operation / Operation principle, page 20 ff. The configuration level is unlocked, see Operation / Programming / Enabling the levels, page 23. (Code word 0300) 34

37 Configuration level Analogue inputs C111 C Measurement variable I I I I mv 1 0 I I I ph 1 I I I I I I not used I I I 0 I I I I not used I I 0 I I Type of temperature measurement I Manual temperature compensation 0 Automatic temperature compensation with Pt100 1 Automatic temperature compensation with Pt The factory-set codes are shown in the position boxes. 1 After reconfiguring the measurement variable from ph = ph value to mv = redox potential, the Operating Instructions B (Part No ) must be used. 35

38 Configuration level Logic inputs... C112 C Function of the logic input 1 1 I I I I no function 0 I I I Key inhibit 1 I I I Alarm stop 2 I I I Hold 3 I I I Freeze measurement 4 I I I Setpoint switching 5 I I I Range expansion (x10) 6 I I I I I I Function of the logic input 2 1 I I I no function 0 I I Key inhibit 1 I I Alarm stop 2 I I Hold 3 I I Freeze measurement 4 I I Setpoint switching 5 I I Range expansion (x10) 6 I I I I Electrode type I I Standard electrode 0 I Special electrode (antimony) 1 I I I-action of the controller I I-component of the controller is active between the two setpoints 0 I-component of the controller is not active between the two setpoints 1 The factory-set codes are shown in position boxes. 1 Description of functions, see Logic inputs / Functions, page

39 Configuration level Serial interface... C113 C Instrument address I I I I Address I I Address I I... I I Address I I I I Serial interface I I MODbus / Jbus, 9600 bps, no parity 0 I MODbus / Jbus, 9600 bps, odd parity 1 I MODbus / Jbus, 9600 bps, even parity 2 I MODbus / Jbus, 4800 bps, no parity 3 I MODbus / Jbus, 4800 bps, odd parity 4 I MODbus / Jbus, 4800 bps, even parity 5 I I Response of the process value output to out-of-range and off the scale I Underrange Overrange I 0% 100% 0 0% 110% 1 approx. -10% 1 100% 2 approx. -10% 1 110% 3 The factory-set codes are shown in position boxes. 1 With the output signals 0 10V and 0 20mA, -4% approx. is output on underrange. 37

40 Configuration level Controller options C211 C Function K1 I I I I off 0 I I I Limit controller 1 I I I Pulse duration controller 2 I I I Pulse frequency controller 3 I I I I I I Function K2 I I I off 0 I I Limit controller 1 I I Pulse duration controller 2 I I Pulse frequency controller 3 I I MAX. temperature limit comparator 4 I I MIN. temperature limit comparator 5 I I I I Calibration procedure 1 I I Single-point calibration, process value output not frozen 0 I Single-point calibration, process value output frozen 1 I Dual-point calibration, process value output not frozen 2 I Dual-point calibration, process value output frozen 3 I I Manual operation 2 I Manual operation off 0 Manual operation enabled, switched 1 Manual operation enabled, keyed 2 Simulation of process value output 3 The factory-set codes are shown in position boxes. 1 Description of functions, see Calibration / Preparation, page Description of functions, see Manual operation, page

41 Configuration level Controller outputs C212 C Signal K1 on overrange / hold I I I I Output 0% 0 I I I Output 100% 1 I I I Output 50% (not with limit controllers) 2 I I I Output accepted 3 I I I I I I Signal K2 on overrange/hold I I I Output 0% 0 I I Output 100% 1 I I Output 50% (not with limit controllers) 2 I I Output accepted 3 I I I I MIN / MAX contact on K1 / K2 I I K1 K2 I MIN MIN 0 I MIN MAX 1 I MAX MIN 2 I MAX MAX 3 I I Make / break contact I K1 K2 make make 0 make break 1 break make 2 break break 3 The factory-set codes are shown in position boxes. 39

42 Configuration level Other outputs C213 C Function for output 3 (Relay 3 or analogue process-value output) 1 I I I I no function 0 I I I Hold (relay only) 1 I I I Alarm pulse contact (relay only) 2 I I I Alarm steady contact (relay only) 3 I I I MAX. temperature limit comparator (relay only) 4 I I I MIN. temperature limit comparator (relay only) 5 I I I Process value: variable 1 (analogue process-value output only) 6 I I I Process value: temperature (analogue process-value output only) 7 I I I I I I Output signal for output 3 (analogue process-value output only) I I I 0 20 ma 0 I I 4 ma 1 I I 0 10 V 2 I I 2 10 V 3 I I 20 0 ma 4 I I 20 4 ma 5 I I 10 0 V 6 I I 10 2 V 7 I I I I Function for output 4 (logic output) I I no function 0 I Hold 1 I Alarm pulse contact 2 I Alarm steady contact 3 I MAX. temperature limit comparator 4 I MIN. temperature limit comparator 5 I I Alarm monitoring of relays K1 and K2 2 I K1 K2 monitored monitored 0 monitored not monitored 1 not monitored monitored 2 not monitored not monitored 3 The factory-set codes are shown in position boxes. 1 Only if the dtrans ph 01 was ordered with output 310 = relay or 888 = analogue process-value output, see Instrument identification / Type code, page 6. 2 A relay contact (K1 /K2) that is monitored triggers an alarm when the alarm tolerance + alarm delay time have been exceeded, see Glossary, 47 ff. 40

43 Configuration level SoL - SoH - OFFS - null SoL Standard signal scaling of the analogue process value output. Start value of the value range for standard signals of the process value output. Value range: ph factory-set: ph Example: 0 20 ma is to be represented by ph. SoL = 2.00 SoH Standard signal scaling of the analogue process value output. End value of the value range for standard signals of the process value output. Value range: ph factory-set: ph Example: 0 20 ma is to be represented by ph SoH = 9.00 OFFS Process value correction for temperature The measured value of the temperature input can be corrected upwards or downwards through process value correction. Value range: C or F factory-set: 0 C Example: Measured value Offset Display value 34.7 C +0.3 C 35.0 C 35.3 C -0.3 C 35.0 C null Zero point correction The zero point of the ideal ph electrode is at ph 7. Because of manufacturing variations, and also because electrode parameters change during operation, the true electrode zero point is ph 7. The deviation from the ideal zero point can be corrected with null. Value range: ph when standard electrode has been configured, see Configuration level / Logic inputs... C112, page 36. Value range: ph when special electrode (antimony) has been configured, see Configuration level / Logic inputs... C112, page 36. factory-set: 7.00 ph 41

44 Configuration level SLoP SLoP Correction of slope The slope of the output signal for a ph electrode changes during operation. The electrode slope can be determined automatically during dual-point calibration (see chapter Calibration ), or it can be entered manually. Value range: % when standard electrode has been configured, see Configuration level / Logic inputs... C112, page 36. Value range: % when special electrode (antimony) has been configured, see Configuration level / Logic inputs... C112, page 36. factory-set: 100.0% 42

45 Manual operation Description Initial condition In manual mode, relays K1 and K2 can be manually operated, independently of the controller. Manual operation is only possible if it has been configured first, see Configuration level / Controller options C211, page 38 If relay K2 has been configured as limit comparator for temperature, then this relay cannot be operated manually. In manual operation, output limiting is effective (except for limit controllers). The instrument is in the measurement mode. Activating manual operation EXIT + 1s EXIT Switch to manual mode with EXIT + (The upper LED display continually switches between Hand and the current measurement). Activate or deactivate relay K2 with, and relay K1 with Press EXIT to return to the measurement mode. The upper LED display continually switches between HAnd and the current measurement. Simulation of the process value output If process value simulation has been configured, see Configuration level / Controller options C211, page 38, the upper display alternately shows HAnd and 50.0 (%) Use the key to reduce the signal of the process value output in 10% steps, and the key to increase the signal of the process value output in 10% steps. Example: Output signal 0 20 ma, required simulated output signal 8 ma => setting 40 (%) 43

46 Hold / Version Description Initial conditions Activating Hold (manually) When Hold is activated, the relays K1 and K2 take the state defined in the configuration code Controller outputs C212, see Configuration level / Controller outputs C212, page 39. The operating level is unlocked, see Operation / Programming / Enabling the levels, page 23. (Code word 0110) The instrument is in the measurement mode. EXIT + 2s EXIT + 2s Press and hold the + EXIT keys for longer than 2 seconds. The upper LED display continually switches between HoLd and the current measurement. Return to measurement mode by pressing + EXIT for more than 2 seconds. If relay K2 is configured as limit comparator for temperature, then the Hold operation has no effect on this relay. Relays K1 and K2 are set according to configuration C212. In Hold, output limiting is effective (except for limit controllers). Displaying the software version and the temperature unit + PGM Display the software version and the temperature unit with + PGM. The software version is shown in the upper display. Possible units (lower display) are C or F (normally: C; a change to F can only be made in the factory). 44

47 Logic inputs Functions Setting the functions of the logic inputs, see Configuration level / Logic inputs... C112", page 36. State of the logic input Key inhibit Alarm stop Hold Freeze measurement Setpoint switching Range expansion (x10) Operation of the transmitter / controller is possible from the keys on the front. Alarm messages are output to the configured output. Controller is activated. The measured process value of the first measurement variable is displayed. Setpoint pair 1 (SP1 and SP 2) is active. Display at operating level: SPr1 SPr2 SP 3 Sp 4 Process value output is linear between SoL and SoH Operation of the transmitter/ controller from the keys on the front is not possible. The alarm contact is deactivated; the LED of the configured alarm output blinks. Hold, see Hold / Version, page 44. The process value of the first measurement variable is frozen, see Calibration / Preparation", page 27. Setpoint pair 2 (SP3 and SP 4) is active. Display at operating level: SP 1 SP 2 SPr3 Spr4 Process value 0 10% of full scale is scaled up to 0 100%. 45

48 K1 K2 K3 K4 CAL PGM EXIT K1 K2 K3 K4 PGM EXIT K1 K2 K3 K4 PGM EXIT Interface MOD/Jbus The controller can be integrated into a data network via the interface. Applications that can be implemented include: - Process visualisation - System control - Recording/logging mv ph ms C C CAL C CAL Fig. 9 Interface The bus system is based on the master-slave concept. A master computer can communicate with up to 31 controllers and instruments (slaves). The interface is a serial interface using the RS422 or RS485 standards. The following data protocol is available: - MOD/Jbus protocol Interface description B The interface can only be retrofitted in the factory. 46