Operating instructions

Transcription

1 ¼ 20 ma 4 12 ¼ 36 V DC E Level and Pressure Operating instructions VEGABAR 20 DISPLAY VEGADIS bar p

2 Safety information Safety information The described module must only be installed and operated as described in these operating instructions. Please note that other action can cause damage for which VEGA does not take responsibility. Note Ex-area Please note the approval documents attached (yellow binder), and especially the safety data sheet included. 2 VEGABAR 20

3 Contents Contents Safety information... 2 Note Ex-area Product description 1.1 Function and configuration Self-monitoring Technical data Approvals Dimensions Mounting Electrical connection 3.1 Connection information Connection plan Connection examples Set-up 4.1 Adjustment of the basic functions Menu-guided adjustment with additional functions Indicating module Diagnosis 5.1 Maintenance Failure removal Instrument modification 6.1 Interchanging adjustment modules VEGABAR 20 3

4 Product description 1 Product description 1.1 Function and configuration The VEGABAR 20 process pressure transmitters are efficient instruments for process pressure measurement. The dry ceramiccapacitive measuring cell CERTEC is used as a pressure sensor element. The process pressure causes a capacitance change within the measuring cell via the diaphragm. This capacitance change is detected by an ASIC (application specific integrated circuit) and converted into a pressure proportional signal by an integrated oscillator with microcomputer. Precise digital processing of measured data with highest resolution ensures excellent technical data. The oscillator is powered by a separate VEGA-signal conditioning instrument, a stabilised power supply unit or a PLC (active input). After adjustment, a standardised current signal of 4 20 ma is available which can be displayed (e.g. in PLC-systems) or further processed. 1.2 Self-monitoring Important electronic components are checked for their function, while internal parameters, such as sensor value, temperature and operating voltage, are monitored to increase reliability. VEGABAR 20 with the ceramic CERTEC - measuring cell offers the advantage of continuous self-monitoring. The measuring and reference capacitances of the measuring cell are in a defined ratio over the complete measuring range. Any deviation from these data is a reliable indicator for a malfunction of the measuring cell. If failures or malfunctions are detected during these routines, a fault signal is triggered via the 4 20 ma-output (current jump to 3,6 ma or 22 ma). Four versions are available for adjustment: - adjustment module directly on VEGABAR - adjustment module in external housing (VEGADIS 10) - via PC with adjustment software (see manual "VEGA Visual Operating (VVO) ) - in the control room on the signal conditioning instrument 4 VEGABAR 20

5 Product description 1.3 Technical data Mechanical data Materials, wetted parts Process connection brass 2.040, stainless steel Diaphragm ceramic (99,5 % Oxydeceramic) Measuring cell seal Viton, Kalrez Materials, non-wetted parts Housing high resistance plastic PBT (Polyester) Earth terminal stainless steel Indicating module window glass Weight VEGABAR approx. 0,8 kg Adjustment and indicating elements Adjustment of the basic functions 2 keys, 1 rotating switch Menu-guided adjustment with additional function - adjustment elements 4 keys - indicating elements DOT-matrix display, 3 lines with 7 figures each Indicating module LC-display with - bargraph (20 segments) - digital value (4-digits) - tendency indicators for raising or lowering values Electrical data Connection Cable entry Screw terminals Pg 13,5 (for cable-ø 5 10 mm) for conductor cross-sections of up to 2,5 mm 2 Protective measures Protection 1) IP 65 Protection class III Overvoltage category III CE-conformity VEGABAR 20 corresponds to the requirements of EMC (89/336/EWG) and NSR (73/23/EWG). The conformity has been judged acc. to the following standards: EMC Emission EN : 1992 Susceptibility EN : 1995 NSR EN : ) Use of a suitable seal for the cable in the PG is necessary for maintaining the housing protection. If the seal used does not fit the cable, it should be replaced by a suitable one. VEGABAR 20 5

6 Product description NAMUR-regulations The NAMUR-regulations NE 21, May 1993 are met. Supply and signal circuit Supply voltage V DC Permissible residual ripple U SS - 1 V Output signal - range 3,8 20,5 ma - resolution 6 µa Current limitation approx. 22 ma Fault signal 22 ma (3,6 ma) Integration time 0 10 s adjustable Average delay time 150 ms Connection cable 2-wire Max. permissible load dependent on the supply voltage (see load diagram) Load RL total in Ohm Voltage of the external energy U H in Volts Indicating and adjustment circuit For connection to Data transmission Connection cable Cable length VEGADIS 10 and/or the indicating module digital 4-wire (standard cable) max. 25 m Transmission reaction Measuring ranges Min. pressure 10 abs Zero -20 % +95 % adjustable of nominal range Span 3,3 % 120 % adjustable of nominal range Turn up up to +95 % Turn down up to 1 : 30 Recommended turn down: Accuracy class 0,25 up to 1 : 5 Accuracy class 0,1 up to 1 : 10 6 VEGABAR 20

7 Product description Measuring range Nominal measuring Gauge pressure Low pressure range resistance 1) resistance Gauge pressure 0 0,1 bar 10 bar -0,1 bar 0 0,2 bar 15 bar -0,2 bar 0 0,4 bar 20 bar -0,4 bar 0 1,0 bar 25 bar -1,0 bar 0 2,5 bar 35 bar -1,0 bar 0 5,0 bar 45 bar -1,0 bar 0 10,0 bar 60 bar -1,0 bar 0 20,0 bar 90 bar -1,0 bar 0 40,0 bar 140 bar -1,0 bar 0 60,0 bar 200 bar -1,0 bar -0,05 0,05 bar 10 bar -0,1 bar -0,1 +0,1 bar 15 bar -0,2 bar -0,2 +0,2 bar 20 bar -0,4 bar -0,5 +0,5 bar 25 bar -1,0 bar -1,0 +0,0 bar 25 bar -1,0 bar -1,0 +1,5 bar 35 bar -1,0 bar -1,0 +4,0 bar 45 bar -1,0 bar -1,0 +10,0 bar 60 bar -1,0 bar -1,0 +20,0 bar 90 bar -1,0 bar -1,0 +40,0 bar 140 bar -1,0 bar -1,0 +60,0 bar 200 bar -1,0 bar Absolute pressure 0 1,0 bar 25 bar 0 2,5 bar 35 bar 0 5,0 bar 45 bar 0 10,0 bar 60 bar 0 20,0 bar 90 bar 0 40,0 bar 140 bar 0 60,0 bar 200 bar 1) Note nominal pressure stage of the process connection! VEGABAR 20 7

8 Product description Measuring accuracy (similar to DIN , DIN V and IEC 770) Deviation Reference conditions (acc. to IEC 770) - temperature 18 C 30 C rel. humidity - air pressure 860 kpa 1060 kpa Determination of characteristics limit point adjustment acc. to DIN Characteristics linear Deviation in characteristics 1) - accuracy class 0,25 < 0,25 % - accuracy class 0,1 < 0,1 % Hysteresis 1) < 0,02 % Repeatability 1) < 0,02 % Influence of the ambient temperature Average temperature coefficient 1) 2) of the zero signal - accuracy class 0,25 < 0,15 %/10 K - accuracy class 0,1 < 0,05 %/10 K Long-term stability Long-term drift of the zero signal 1) 3) < 0,1 % Other actuating variables Calibration position Influence of the installation position Vibration resistance standing, diaphragm points downwards < 0,2 mechanical vibrations with 4 g and Hz, tested acc. to the regulations of German Lloyd GL-characteristics 2 Operating conditions Product Aggregate conditions gas, steam, liquid up to high viscosity also abrasive and aggressive with suitable material selection of wetted parts acc. to order code Ambient conditions Ambient temperature -40 C +85 C - indicating module -20 C +70 C Storage and transport temperature -40 C +85 C Product temperature -40 C +100 C 1) Relating to the nominal measuring range. 2) In the compensated temperature range of 0 C +80 C, reference temperature 20 C. 3) Acc. to IEC 770, point relating to the nominal measuring range. 8 VEGABAR 20

9 Product description 1.4 Approvals Ex Zone 2 StEx Zone 10 Ship approval CENELEC EEx ia IIC ATEX II 1G EEx ia IIC and WHG ATEX II 1G EEX ia IIC and ship approval DVGW (applied) If the use of approved instruments is required for certain applications, the appropriate legal documents (test reports, test certificates and conformity certificates) must be observed. These are supplied with the appropriate instrument. VEGABAR 20 9

10 Product description 1.5 Dimensions Housing without indicating module 85 ~76 with indicating module SW 27 SW 27 SW ¼" NPT ½" NPT GN ø11,4 ½" NPT GA ø 3 ø 6 M20x1,5 GB SW SW 27 ø 3 ø 6 G ½ A GM/GV SW G ¼ ø17,5 G ½ A GP Pg 13,5 Earth connection Breather facility Process connections ø 3 ø11,4 ø17,5 G ½ A ø 6 G ½ A GR GI 10 VEGABAR 20

11 Mounting, electrical connection 2 Mounting VEGABAR can be mounted in any position. Cable entries must point downwards to avoid humidity ingress. For this purpose the housing can be rotated by 330 in relation to the mounting part. 3 Electrical connection 3.1 Connection information The electronics in VEGABAR 20 require a power supply of V DC. It is provided in two-wire technology, i.e. supply voltage and current signal are led to the terminals via the same two-wire connection cable. This external energy is provided via a separate power supply unit: - power supply unit, e.g. VEGASTAB processing unit with integral DC-current source (e.g. active PLC-input) - VEGAMET or VEGADIS 371 Note that the external energy source is reliably separated from the mains circuits acc. to DIN VDE 0106, part 101. The above-mentioned VEGA-instruments meet this requirement, and protection class III is therefore ensured. A seal, appropriate for the connection, must be used for mounting. This seal is either supplied with VEGABAR or must be provided by the customer. Compensation of the atmospheric pressure The atmospheric pressure of instruments used for overpressure measurements is compensated via a breather facility integrated in the housing. The external energy source must supply a terminal voltage of at least 12 V to the transmitter. The actual terminal voltage on the transmitter depends on the following factors: - output voltage of the external energy source under nominal load, - electrical resistors of the connected instruments in the circuit (see connected instruments, load resistor). Note the following instructions for electrical connection: - Connection must be made acc. to the specific installation standards (e.g. in Germany according to the VDE-regulations). - Terminal voltage must not exceed 36 V to avoid damage to the electronics. - Electrical connection is provided with reverse polarity protection. - The wiring between VEGABAR and the power supply can be carried out using standard two-wire cable. VEGABAR 20 11

12 Electrical connection - Screened cable is recommended if strong electromagnetic interference is to be expected. The screening must be earthed at the sensor end. - If overvoltages are expected, we recommend the installation of VEGA-overvoltage arresters. - In the PG, a seal must be used which fits the cable. 3.2 Connection plan Note: A current meter for local control of the output current can be connected to terminals 1 and 3. This measurement can be made during operation without interrupting the supply cable. VEGABAR VEGABAR (with or without indication) Earth 1) Current meter for local control rd wt vio or + Supply voltage V DC 4 20 ma 0-20 bar 1) If screened cable is used, the screen must be connected to earth in the terminal box on one side and the earth terminal must be earthed outside on the housing according to regulations. The terminals are connected to each other in the housing. 12 VEGABAR 20

13 Electrical connection 3.3 Connection examples Supply via power supply unit Processing is carried out using an indicating instrument. Current meter for local control VEGABAR terminals analogue / digital indicating instrument Power supply unit + ~ Supply via a signal conditioning instrument Standard circuit for basic module with analogue output (not standardised). Current meter for local control + VEGABAR terminals Signal conditioning instrument 0/4 20 ma DISBUS! Supply via a PLC with active input circuit Processing is carried out via a PLC with active input circuit. Current meter for local control VEGABAR terminals PLC PLC + VEGABAR 20 13

14 DISPLAY 4 ¼ 20 ma + VEGADIS ¼ 36 V DC E Set-up 4 Set-up Electrical connection and set-up can be simplified by temporarily mounting the cover or indicating module on VEGABAR or laterally displaced downwards. VEGABAR 4.1 Adjustment of the basic functions Adjustment elements Rotating switch: Select required function OPERATE t i ZERO SPAN OK 0-20 bar Loosely tighten screws Indicating module Key +: Change value (raising) Key : Change value (lowering) Adjustment system Select the required function with the rotating switch. Change the value with keys + - and. Reset rotating switch to OPERATE, the adjusted values are transferred to the EEPROM-memory. They remain there even on voltage loss. Adjustment For adjustment of zero and span, a current meter must be connected to terminals 1 and 3. The measured value is identical with the output current. 1 Adjustment of zero (e.g. process pressure zero or empty vessel) Set rotating switch to zero By pushing the + and -keys simultaneously, the current jumps directly to 4 ma or set it to 4 ma by pushing the + and - keys Adjustment range of zero: -20 % +95 % of the nominal measuring range (corresponds to turn up of up to +95 %) 2 Adjustment of span (e.g. process pressure or vessel level maximum) Set rotating switch to span By pushing the + and -keys simultaneously, the current jumps directly to 20 ma or set it to 20 ma by pushing the + and -keys Adjustment range of span: 3,3 % 120 % of the nominal measuring range (corresponds to turn down 1 : 30) Note: - A modification of zero does not influence the span. - It is also possible to adjust currents for partial fillings or partial pressures, e.g. 8 ma for 25 % and 16 ma for 75 %. VEGA- BAR automatically calculates the current values for 0 % or 100 % (only possible with ³ 3,3 %). 14 VEGABAR 20

15 Set-up Integration time An integration time t i of 0 10 s can be adjusted for damping pressure shocks. Procedure Set rotating switch to t i By pushing the - -key 10-times, ensure first of all that the integration time is set to 0 s Push the + -key once for every 1 s integration time required The integration time is the time required by the current output signal to reach 90 % of the actual level after a step change of the process pressure. 4.2 Menu-guided adjustment with additional functions The adjustment with the multiple function module is menu orientated and is made via the four keys in conjunction with the text display. The move from the measured value indication to the main menu is made with the OK -key. Use the -key to change from one menu point to an other within the menu. Branches A branching is shown by the symbol and enables a jump to the menu below with the OK -key. In this menu you can find parameters which are linked (possibly in other submenus). Parameters have no or symbol. The value of the parameters can be modified with the + and -keys or chosen from the list. When these buttons are pushed once, the value flashes first. When pushed again, the value is modified. The modified value can be saved with the OK -key. Push the -key to interrupt input (without storing the modification). Certain parameters can only be indicated and their values cannot be modified. Reset A reset is shown by the symbol and enables a jump to the menu above with the OK - key. Automatic reset to measured value indication is triggered 60 minutes after having last pushed a key. Adjustment elements Indication of: - measured value - functions in menu Dependent on the parameter, change value (raising) or choose from list Choose menu point or interrupt input OPERATE fi OK JJump to the menu below with OK-key D Reset to the menu above with OK-key Dependent on the parameter, change value (lowering) or choose from list Acc. to the menu point, save the adjusted value or change the menu level VEGABAR 20 15

16 16 VEGABAR 20 Set-up Menu plan Adjustment Calculation Output Simulation Operate 0,2 Escape Adjust with press. Adust without press Escape Zero 4,000 ma Span 4,000 ma Escape Zero 0,0 Span 100,0 Unit 0,0 Offset correction Offset corr. OK? Sensor unpressurized? Scaling indication ti 1 s Unit 0,0 100%= 1000 Decimal point 888,8 0%= 0 Escape Current output 4-20mA Fault signal 22mA Sim. xx,x Escape Escape psi kpa psi kpa % Scal. ma 20-4mA 3,6mA Measured value indication

17 Set-up Additional functiion Escape Sensor data Language Reset Escape Language English Deutsch Franc. Ital. Español Reset OK? Reset Now! OK? Herst. Date P min -0,3 P max 150 Temp. 30,7 C T min 23,5 C T max 36,2 C Diagnostic no Escape 1) 1) 1) 1) 1) By pushing the + and -keys simultaneously, the min. and max. values can be reset to the actual value. Use the arrow key, to move to the right in the menu plan. Adjust with press. Escape In menu points with these symbols you can move to the bottom or top with the OK -key. Span 100,0 In white letters you see the parameters which can be modified with the + or -key and saved with the OK -key. Sensor and measured value information which cannot be modified in these positions are in itallics. Light grey menu points are only displayed if necessary (dependent on the instrument version). Scaling indication Language English Deutsch Franc. Ital. Español List These options can be chosen with the + or -key and saved with the OK -key. VEGABAR 20 17

18 Set-up Adjustment taking the current pressure into account (live adjustment) Live adjustment comprises two steps: 1 Adjustment of zero 2 Adjustment of span The appropriate output current is displayed via the DOT-matrix. 1 Adjustment of zero (e.g. process pressure zero or vessel empty) Zero 4,000 ma Set the current value to 4,000 ma with the + or -key. Then push the OK -key. 2 Adjustment of span (e.g. process pressure or vessel level max.) Span 20,000 ma Set the current value to 20,000 ma with the + or -key. Then push the OK -key. Note: - A modification of zero does not influence the adjusted span. - + and are pushed simultaneously for standard adjustment of zero/span. The value jumps directly to 4 ma/20 ma. - In the case of a high turn down the + and - -key should generally be pressed simultaneously due to the resolution. - When pushing the + or -keys individually, the output current remains at the last value, it takes on the adjusted value only after storing with the OK -key. - It is also possible to adjust currents for partial fillings or partial pressures, e.g. 8 ma for 25 % and 16 ma for 75 %. Then VEGABAR automatically calculates the current values for 0 % or 100 % (only possible with >3,3 %). Adjustment without taking the current pressure into account (dry adjustment) Adjustment without pressure comprises four steps: 1 Selection of the unit in which the adjustment is to be carried out 2 Offset correction 3 Adjustment of zero 4 Adjustment of span The offset correction (only with overpressure) defines the reference basis for the measurement. It can be carried out: - before or after the adjustment of zero and span - before or after installation of VEGABAR. VEGABAR must be unpressurised when the offset correction is carried out! Adjustment without pressure can be carried out assembled or unassembled (e.g. workroom). A currently existing pressure has no significance for the adjustment. 1 Enquiry of the unit Adjust without press. Unit 0,0 psi kpa Choose the unit with the + or. Save the selected unit with the OK -key. 2 Adjustment of zero Zero 0,0 Adjust zero with the + or -key and save with the OK -key. 4 Adjustment of span Span 100,0 Adjust span with the + or -key and save with the OK -key. 18 VEGABAR 20

19 Set-up Note: - A modification of zero does not influence the adjusted span. - By pushing the + and -keys the output current remains on the last value, after saving with the OK -key, the output current takes on the adjusted value. Evaluation Adjustment of the integration time ti 1 s the OK -key. An integration time t i of 0 s 10 s can be adjusted with the + or - key to damp pressure shocks. The adjusted value can be saved with Selection of the unit Unit 0,0 psi kpa % scal. ma Scaling The actual measured pressure is displayed on the DOT-matrix in the measured value indication. The appropriate unit can be chosen from a list with the + or -key and the OK -key. When choosing the unit Scal. the following menu points are available. Bar graph and digital value relate to the adjusted measuring range and change proportionally to the current output. Digital values < 10 % or > 110 % are displayed as flashing figures. As a result of scaling, the 4 ma or 20 ma user-specific current output values are assigned to the indicating module as 4-figure digital values. Outputs Current output/selection of the characteristics The current output provides the actual measured pressure as an analogue current signal 4 20 ma depending on the adjustment. Current output 4-20mA 20-4mA Fault signal The characteristics can also be inverted, i.e. adjusted to ma with the + or -key and the OK -key. The fault signal is triggered via the current output if during continuous self-monitoring, failures, damage or interference in the measuring cell or the electronics are detected,. In operating condition the actual measured pressure is displayed on the indicating module: - as a bar graph with 20 segments - as a 4-digit digital value. Fautl signal 22mA 3,6mA You choose whether the failure current should be 22 ma or 3,6 ma with the + or -key and the OK -key. 0%= 100%= Decimal point Escape 888,8 Simulation Scaling indication Simulation Sim. xx,x You can adjust with the + or - key an individual pressure or %- value to check the outputs of VEGA- BAR and connected components. The adjusted value flashes with activated simulation. The simulation can be finished with the OK -key. VEGABAR 20 19

20 Set-up Additional functions Sensor data Important sensor data can be indicated via the DOT-matrix for information and diagnosis purposes: - manufacturing date - pointer function (p min ) - pointer function (p max ) - actual temperature value (Temp) - pointer function (T min ) - pointer function (T max ) - diagnosis number Reset Reset Reset OK? Reset Now! OK? The reset function deletes the adjusted values and resets the parameters to the default values. The adjustment data again correspond to the nominal measuring range. Additional function Sensor data Prod. Date P min -0,3 Language P max 150 Temp. 30,7 C T min 23,5 C 1) 1) 1) 1) T max 36,2 C Diagnostic no ) The min. and max.-values can be set to the actual value by pushing the + and -keys simultaneously. Language Language English Deutsch Franc. Ital. Español VEGABAR is adjusted to the order language as default. The languages German, English, Italian or Spanish can be chosen with the + or -key and the OK -key. 4.3 Indicating module Digital value - 4 digits and decimal point - with single range and basic function module fixed indication range in bar - the multiple function module can be individually scaled. Connection is made acc. to the scheme in the Electrical connection section. Tendency indication Bargraph Digital value 20 VEGABAR 20

21 Diagnosis 5 Diagnosis 5.1 Maintenance VEGABAR process pressure transmitters are maintenance free. 5.2 Failure removal Fault signals VEGABAR provides high reliability with its self-test and continuous self-monitoring. If however malfunctions occur, VEGABAR diagnosis distinguishes between atypical process conditions and faults in the VEGABAR. Atypical process conditions Exceeding or not reaching the measuring range limits (fault signal extinguishes when the value is again in the measuring range). Failure in VEGABAR Failure in the electronics, interferences or damages in the measuring cell. The following table assists in analysing the fault signals. Reason Fault signal via DOT-matrix Bargraph Current Digital indication output Clearly OPERATE Bargraph 0 % outside???? or 100 % Current measuring bar, Digital value value range no adjust- flashes, tendency 3,6 ma ment indication or possible active >21,6 ma Overload Bargraph 0 % range or 100 %, of the for digital value measuring four segments cell flash Failure in Defect, all segments VEGABAR no adjust- flash ment possible, no measuring function On instruments with menu-guided adjustment with additional functions, possible reasons are displayed under the menu point Diagnosis no. in case of failure. Diagnosis no. Meaning 1 No frequency from C/f-converter 2 Frequency signal of the capacitor outside the limit values 3 Frequency signal of the reference capacitor outside the limit values 4 Frequency signal temperature outside the limit values 7 Communication erro to EEPROM 9 Error in EEPROM CRC-checksum Troubleshooting If the indicated value does not correspond to the level in the vessel or to the process pressure, the following measures must be carried out: - check the pressure compensation (only with overpressure measuring ranges) - check the electrical connection. Checking pressure compensation Open the housing of VEGABAR. The measured value should not change. However if the indicated value changes, compensation of the atmospheric pressure is not ensured and the measured value will be affected. Check the breather facility on the VEGABAR-housing. VEGABAR 20 21

22 Diagnosis Checking the electrical components Voltage Voltage V Current ma External energy source + ~ ma Current meter for local control - the terminal voltage on VEGABAR must be at least 12 V DC Current Current value Condition 3,8 20,6 ma standard range for output current 0 ma signal line open circuit < 3,6 ma oscillator or pressure sensor element defect > 21,6 ma short-circuit in the signal line, oscillator or pressure sensor element defective 22 VEGABAR 20

23 Instrument modification 6 Instrument modification 6.1 Interchanging adjustment modules Indication with LCdisplay Exchange of the adjustment module Removal of the adjustment module 1 Separate VEGABAR from the power supply 2 Loosen the screws on the cover of VEGABAR or VEGADIS 10 3 Loosen connection cable from the terminals 4 Loosen screws of the adjustment cover 5 Remove adjustment cover and plug connection Module for basic functions Module for menu-guided adjustment Module without adjustment Insertion of an adjustment module 6 Plug the connection of the new adjustment cover to the plug-in socket of the oscillator 7 Fasten new adjustment cover 8 Fasten connection cables to terminals 9 Close cover of VEGABAR or VEGADIS Connect VEGABAR to power supply Retrofitting of an indicating module VEGABAR The modular construction of VEGABAR allows retrofitting, interchange or removal of adjustment modules and the indicating module. Retrofitting may be necessary e.g. when a VEGABAR with factory settings should be adapted to modified measurement conditions. Data already saved (e.g. adjustment values) are not saved in the adjustment module but in an EEPROM of the oscillator and readjustment is therefore not necessary. 1 Separate VEGABAR from power supply 2 Loosen screws on cover of VEGABAR or VEGADIS 10 3 Remove cover 4 Connect indicating module to the screw terminals via the four lines (note 3.3 Connection plan ) Note: Step 4 is facilitated when the indicating module is temporarily (carefully) mounted with two screws. 5 Place indicating module in the correct position on VEGABAR or VEGADIS 10 6 Tighten screws of the cover 7 Connect VEGABAR to power supply The connection of the modules is made: - on the adjustment module via a 4-pole plug connection - on the indicating module via screw terminals. VEGABAR 20 23

24 VEGA Grieshaber KG Am Hohenstein 113 D Schiltach Phone ( ) 50-0 Fax ( ) ISO 9001 The statements on types, application, use and operating conditions of the sensors and processing systems correspond to the actual knowledge at the date of printing. Technical data subject to alteration / July 99