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B&C CL 7687 Instruction Manual

Residual chlorine - chlorine dioxide dissolved ozone controller
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Instruction manual
CL 7687
RESIDUAL CHLORINE - CHLORINE DIOXIDE
DISSOLVED OZONE CONTROLLER
Option
S/N
REP N°
Power supply: 85 ÷ 264 Vac
Installed firmware: R 1.0x
Cod. 280067691 - Rev. A

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Summary of Contents for B&C CL 7687

  • Page 1 Instruction manual CL 7687 RESIDUAL CHLORINE - CHLORINE DIOXIDE DISSOLVED OZONE CONTROLLER Option REP N° Power supply: 85 ÷ 264 Vac Installed firmware: R 1.0x Cod. 280067691 - Rev. A...
  • Page 3 CL 7687 INDEX INDEX 1 – GENERAL WARNINGS AND INFORMATION FOR ALL USERS 1.1 Warranty ..................3 1.2 After sales service ................3 1.3 CE marking .................. 3 1.4 Safety warnings ................4 1.5 Manual revisions ................4 2 – PRODUCT OVERVIEW 2.1 Functional purpose of the device ............
  • Page 4 CL 7687 INDEX 6 – OPERATING PROCEDURE 6.1 Operating principles ............... 30 6.2 Display ..................31 6.3 Keyboard ..................31 6.4 Users instruction ................32 6.4.1 Main measure ..............32 6.4.2 Temperature values ............. 32 6.4.3 Analog output 1 values ............33 6.4.4...
  • Page 5 CL 7687 GENERAL WARNINGS AND INFORMATION FOR ALL USERS GENERAL WARNINGS AND INFORMATION FOR ALL USERS WARRANTY This product is guaranteed for 5 years from the date of purchase for all manufacturing defects. Please take a look at the terms and conditions described on the warranty certificate at the end of the manual.
  • Page 6 CL 7687 GENERAL WARNINGS AND INFORMATION FOR ALL USERS SAFETY WARNINGS It is important to underline the fact that electronic instruments are subject to acciden- tal failure. For this, it is important to take all necessary precautions to avoid damages caused by malfunctions.
  • Page 7 CL 7687 PRODUCT OVERVIEW PRODUCT OVERVIEW FUNCTIONAL PURPOSE OF THE DEVICE The system for monitoring free chlorine - combined chlorine - total chlorine - chlorine dioxide - dissolved ozone and other oxidizing elements consists of two main parts: • the meter/regulator described in this instruction manual;...
  • Page 8 CL 7687 INSTRUCTION MANUAL CONTENTS INSTRUCTION MANUAL CONTENTS This chapter describes the manual and gives suggestions to all users on how to read it and use it. The manual is written according to the following norms: • UNI 10893 "Instructions for use";...
  • Page 9 CL 7687 INSTRUCTION MANUAL CONTENTS The user normally can read the values on the display. He will read the parts of the manual regarding the: - "Users instruction (page 32)". Maintenance staff could be more interesting in the chapters re- garding: - "Users instruction (page 32)";...
  • Page 10 CL 7687 INSTRUCTION MANUAL CONTENTS – hysteresis and delay on set point (ON-OFF) – band, integration and derivative time, actuation on the set point (PID opera- tion) – minimum and maximum alarm values – delay on alarm – activation/deactivation of the logic inputs –...
  • Page 11 CL 7687 SPECIFICATIONS AND TECHNICAL DATA SPECIFICATIONS AND TECHNICAL DATA FUNCTIONAL SPECIFICATION Display The instrument is equipped with a graphic display that shows the values of the measures and messages to the operator in the various stages of use of the unit.
  • Page 12 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Set points The instrument has two independent set points which can be programmed across the whole scale to activate the correspondent relay contacts (SPST) or the PID action. When using the ON/OFF function, the display shows the status of excitement and de- layed actuation.
  • Page 13 CL 7687 SPECIFICATIONS AND TECHNICAL DATA In case of activation of the hold function in the display Messages section "Display (page 31)" will be displayed HOLD status, in case there is a previous alarm condition will be maintained such indication.
  • Page 14 CL 7687 SPECIFICATIONS AND TECHNICAL DATA The user can separately set the response time relative to signals of small or large vari- ation in order to obtain good reading stability and fast response to the variations of the measurement in the process.
  • Page 15 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Info menu The instrument is provided with an information menu to show: • p/n and firmware release; • LCD screen parameters; • total operating hours. Cod. 280067691 - Rev. A - 13 -...
  • Page 16 CL 7687 SPECIFICATIONS AND TECHNICAL DATA TECHNICAL DATA 4.2.1 GENERAL SPECIFICATIONS Precision 0.2 % Ripetibility 0.1 % Non linearity 0.1 % Alphanumeric display LCD 128 x 64 pixel Keyboard 4 keys Operating temperature -10 ÷ 60 °C Humidity 95 % without condensate Power supply 85 ÷...
  • Page 17 CL 7687 SPECIFICATIONS AND TECHNICAL DATA 4.2.2 TECHNICAL SPECIFICATIONS In the left column is indicated the number of the display concerning: - SETUP parameters are indicated by "S xy" - CONFIGURATION parameters are indicated by "C xy" x = paragraph, y = sequential 1..2..3..4..ecc Default D1.0...
  • Page 18 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Default D1.0 MAIN MEASURE C1.4 Nominal current -2000 ÷ -10 / 10 ÷ 2000 nA/ppm 160 nA/ppm custom C1.5 Polarization -1000 ÷ 1000 mV -200 mV custom C1.6 Measuring unit ppb-ppm / µg/l-mg/l ppb-ppm C1.7...
  • Page 19 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Default D2.0 SECONDARY MEASURE C2.1 Input RTD Pt100 / Pt1000 Pt100 Connection 3 wires S2.1 Measuring unit °C / °F °C Temperature scale -10.0 ÷ 110.0 °C 14.0 ÷ 230.0 °F Resolution 0.1 °C / °F D2.1...
  • Page 20 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Default SET POINT 1 Regulation RELAY1 WM S3.4B • Pulse width 0 ÷ 99.9 seconds 20.0 s • Minimum pulse length 0.3 seconds Relay contacts SPST 220 V 5 A resistive load Analog output 1...
  • Page 21 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Default SET POINT 2 Relay contacts SPST 220 V 5 A resistive load Analog output 2 4-20 mA Default ALARM Window alarm S4.1 • Low value -5 % ÷ 105 % full scale -1.00 ppm S4.2...
  • Page 22 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Default D5.2 ANALOG OUTPUT 2 If not related to SET2 C5.5 Input related to OUT2 ppm / mg/l °C / °F C5.6 Range 0-20 / 4-20 mA 0-20 mA Under / Over range (0-20) 0.00 / 20.50 mA...
  • Page 23 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Default D7.0 AUTOCLEAN Cleaning parameters S7.2 • Repetition time 0.5 ÷ 100.0 hours 24 h S7.3 • Cleaning time 1.0 ÷ 60.0 seconds 15.0 s S7.4 • Holding time 0.1 ÷ 20.0 minutes 3.0 min Cleaning cycle time •...
  • Page 24 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Default D50.0 SETUP S7.2 Repetition time 0.5 ÷ 100.0 hours 24 h S7.3 Cleaning time 1.0 ÷ 60.0 seconds 15.0 s S7.4 Holding time 0.1 ÷ 20.0 minutes 3.0 min S50.1 Password change Default D60.0...
  • Page 25 CL 7687 SPECIFICATIONS AND TECHNICAL DATA Default D60.0 CONFIGURATION C5.4 Point 2 analog output 1 0 ÷ full scale 20.00 ppm C5.5 Measure on analog output 2 ppm / mg/l °C / °F C5.6 Analog output 2 range 0-20 / 4-20 mA 0-20 mA C5.7...
  • Page 26 CL 7687 INSTALLATION INSTALLATION PACKING LIST The package contains: • N° 1 unit with serial number label; • N° 1 instruction manual. PACKING AND UNPACKING Open the carton box and keep it. Remove the instrument for the carton box. Remove the plastic protection from the instrument.
  • Page 27 CL 7687 INSTALLATION Keep the cable of the sensor away from the power cables. ELECTRICAL INSTALLATION For all the electrical connections refer to the label on the instruments, also shown and described in the chapter "Installation drawings (page 46)". All connections to the instrument are made using removable terminal blocks.
  • Page 28 CL 7687 INSTALLATION 5.6.2 CONNECTING THE SENSORS Two electrodes sensors • Connect the cathode to terminal 25 marked IN. • Connect the anode terminal 23 marked CE. Three electrodes sensors • Connect the cathode to terminal 25 marked IN. •...
  • Page 29 CL 7687 INSTALLATION sor Pt100 or Pt1000 as shown in chapter "Connection diagram (page 46)", using the appropriate wire gauge. If the temperature sensor is not connected, interrupted or in short circuit, the instru- ment automatically switches to the manual temperature compensation.
  • Page 30 CL 7687 INSTALLATION terminal 7 marked C : common terminal 6 marked NO : normally open Drive the loads of the relay by a power different from that of the instrument in order to prevent disturbances arising from loads of inductive nature.
  • Page 31 CL 7687 INSTALLATION DISPOSAL In case of disposal of the instrument, apply the terms of the law provided for the dis- posal of electronic devices. Cod. 280067691 - Rev. A - 29 -...
  • Page 32 CL 7687 OPERATING PROCEDURE OPERATING PROCEDURE OPERATING PRINCIPLES This intrument measures the oxidizing substances in water with two types of sensors: • two or three electrodes immersed in an electrolyte separated from the sample by a membrane selective to the substance to be measured.
  • Page 33 CL 7687 OPERATING PROCEDURE DISPLAY Display ID Information display (set points and analog inputs status; functions Secondary display and messages) Operating mode Main display Main measuring unit Instrument status: NORMAL, CLEAN, HOLD, ALARM (MEAS/S1/S2/L1/L2) KEYBOARD KEYS FUNCTION - To visualize the available displays - To exit from the not confirmed calibrations sequences - >3 s To access the zero calibration...
  • Page 34 CL 7687 OPERATING PROCEDURE USERS INSTRUCTION 6.4.1 MAIN MEASURE The display shows the measured value and allows access to the calibration procedures and set point values , if these were not reserved to the maintenance staff. If the user has enabled the cleaning function, during the cleaning cycle will show the value of the measure and the cleaning phase in progress: CLEAN or HOLD.
  • Page 35 CL 7687 OPERATING PROCEDURE 6.4.3 ANALOG OUTPUT 1 VALUES Press MODE two times from the display D1.0 to visualize the output signal and the cor- responding current value. 6.4.4 ANALOG OUTPUT 2 VALUES Press MODE three times from the display D1.0 to visualize the output signal and the cor- responding current value.
  • Page 36 CL 7687 OPERATING PROCEDURE 6.4.6 PARAMETERS FOR THE MAINTENANCE Press MODE five times from the display D1.0 to visualize the SETUP display to access to the maintenance menu of the unit. 6.4.7 PARAMETERS FOR THE PLANT ENGINEER Press MODE six times from the display D1.0 to visualize the CONFIGURATION display to access to the installation menu of the unit.
  • Page 37 CL 7687 OPERATING PROCEDURE Display Contents Meaning Possible values I1.0 P/N e firmware release B&C electronics CL7687 R1.00 I2.0 Screen brightness 0 ÷ 30 LCD BRIGHTNESS I3.0 Screen contrast 0 ÷ 30 LCD CONTRAST I4.0 Type of visualization of the screen...
  • Page 38 CL 7687 OPERATING PROCEDURE All the calibration operations must be done after a proper time to permit the polariza- tion of the sensor as described on the sensor's instruction manual. The newly installed chlorine sensors require a few hours of oper- ation before providing a proper measure.
  • Page 39 CL 7687 OPERATING PROCEDURE to confirm the displayed value On the information display will appear UPDATE message or error message if the calibra- tion is not successful. The user can reset to zero factory as follows: start the calibration of zero, simultaneously press UP, DOWN and ENT.
  • Page 40 CL 7687 OPERATING PROCEDURE Error messages The error messages during the calibration inform the user that the sensor is in unaccep- table operating condition and therefore risky for the plant. Deviations of zero value above +/- 20% of full scale and deviations of the sensitivity un- der 12.5% or above 250% of full scale, are considered errors.
  • Page 41 CL 7687 OPERATING PROCEDURE 6.5.5 SET POINT Press DOWN (SET1) or ENT (SET2) for at least 3 seconds to get the following display: UP and DOWN to change the displayed value to confirm the displayed value 6.5.6 SETUP Press MODE five times from the D1.0 display to go to the D50.0 display.
  • Page 42 CL 7687 OPERATING PROCEDURE Display Contents Meaning Possible values S2.3 Temperature coefficient 0.0 ÷ 4.00 %/°C TEMP.COEFFICIENT 2.00%/°C S3.1A Hysteresis of the set point 1 Selectable HYSTERESIS SET1 0.20 ppm S3.2A Delaly of the set point 1 0.0 ÷ 99.0 s SET1 DELAY 0.2 s...
  • Page 43 CL 7687 OPERATING PROCEDURE Display Contents Meaning Possible values S7.1 Autoclean function CLEAN AUTO MANUAL S7.2 Cleaning cycle 0.5 ÷ 100.0 h CLEAN REPETITION 24.0 h S7.3 Cleaning time 1.0 ÷ 60.0 s CLEAN TIME 15.0 s S7.4 Holding time after the cleaning cycle 0.1 ÷...
  • Page 44 CL 7687 OPERATING PROCEDURE INSTALLATION INSTRUCTION 6.6.1 SAFETY REQUIREMENTS After performing the installation (see chapter "Installation (page 24)"), before turning the power on and proceed to the con- figuration of the instrument is recommended to do the following: • check that the terminal 3 is grounded;...
  • Page 45 CL 7687 OPERATING PROCEDURE Display Contents Meaning Possible values C1.1 Sensor type selection 3 WIRES SENSOR WIRING 2 WIRES 3 WIRES C1.2A Type of measure for 2 wires sensor Cl2 F 2 WIRES SENSOR Cl2 C Cl2 F ClO2 CUST C1.2B...
  • Page 46 CL 7687 OPERATING PROCEDURE Display Contents Meaning Possible values C3.5 PID regulation related to set point 2 ACTUATION SET2 RELAY2 FM OUT2 C3.6 Set point 2 function HI/LO SET2 FUNCTION C4.1 Alarm activation on set point 1 opera- ALARM SET1 tion time C4.2...
  • Page 47 CL 7687 OPERATING PROCEDURE For the most common sensors use the following parameters: Sensor Current Polarization CL7901 -200 mV CL7902 -400 mV OZ7901 -200 mV SZ283 -200 mV Cod. 280067691 - Rev. A - 45 -...
  • Page 48 CL 7687 INSTALLATION DRAWINGS INSTALLATION DRAWINGS CONNECTION DIAGRAM Terminal Function Terminal Function Power supply 85 ÷ 264 Vac + Analog output 2 Power supply 85 ÷ 264 Vac + Analog output 1 Ground - Common analog outputs NO Set1 Common logic inputs...
  • Page 49 CL 7687 INSTALLATION DRAWINGS DIMENSIONS Cod. 280067691 - Rev. A - 47 -...
  • Page 50 CL 7687 WARRANTY WARRANTY Your product is guaranteed for 5 years from the date of purchase, for failure due to manufacturing defects. The warranty is void in case of tampering or deterioration due to improper instal- lation or maintenance. The warranty covers only free repair at the laboratories of the manufacturer.
  • Page 51 CL 7687 REPAIRS INFORMATION SHEET for service repairs In the event of a fault, we recommend you contact our repair service, to photocopy and complete this information sheet to be attached to the product to be repaired. □ ESTIMATE □ REPAIR...
  • Page 52 CL 7687 REPAIRS - 50 - Cod. 280067691 - Rev. A...
  • Page 53 CL 7687 REPAIRS Cod. 280067691 - Rev. A - 51 -...
  • Page 54 CL 7687 REPAIRS - 52 - Cod. 280067691 - Rev. A...
  • Page 56 B&C Electronics s.r.l. – Via per Villanova 3 – 20866 Carnate (MB) – Italia Tel. +39 039 631 721 – Fax +39 039 607 6099 – bc@bc-electronics.it – www.bc-electronics.it...