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B&C CL 7685.001 Operator's Manual

D. ozone - chlorine controller microprocessor based
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U N I E N I S O 9 0 0 1 : 2 0 0 0
C E R T . N . 9 1 1 5 B C E L
OPERATOR'S MANUAL
CL 7685.001
D. OZONE - CHLORINE CONTROLLER
MICROPROCESSOR BASED
Rev. B
Scales: 0/.2000/2.000/20.00/200.0 PPM
Temperature scale: -2/+52 °C
Power supply: 110/220 Vac
Software: R 2.1x
B&C Electronics Srl – Via per Villanova 3 – 20040 Carnate (Mi) – Italy
P.IVA 00729030965
Tel +39 039 63 1721 – Fax +39 039 607 6099
bc@bc-electronics.it - www.bc-electronics.it

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Summary of Contents for B&C CL 7685.001

  • Page 1 U N I E N I S O 9 0 0 1 : 2 0 0 0 C E R T . N . 9 1 1 5 B C E L OPERATOR’S MANUAL CL 7685.001 D. OZONE - CHLORINE CONTROLLER MICROPROCESSOR BASED Rev.

  • Page 2: Table Of Contents

    B&C Electronics CL 7685.001 - Rev. B FEATURES ..........................3 SPECIFICATIONS........................4 FUNCTIONAL SPECIFICATIONS ................... 4 TECHNICAL SPECIFICATIONS..................7 PHISICAL SPECIFICATIONS ..................11 SOFTWARE DESCRIPTION ....................12 KEYBOARD ........................12 READOUT SEQUENCES ....................13 CALIBRATION SEQUENCES ..................17 3.3.1 Manual/Automatic mode ....................17 3.3.2...

  • Page 3: Features

    B&C Electronics CL 7685.001 - Rev. B 1 FEATURES * Input from: Potentiostatic sensor Selective membrane sensor * Selectable input range * Autorange * Immediate or Postponed calibration mode * Input from Pt100 * Temperature readout * Automatic or manual Temperature compensation...

  • Page 4: Specifications

    B&C Electronics CL 7685.001 - Rev. B 2 SPECIFICATIONS 2.1 FUNCTIONAL SPECIFICATIONS Input The instrument accepts input from: - Potentiostatic sensor - CL7901 Chlorine sensor and OZ7901 D.Ozone sensor A second input is provided for 3 wires Pt100 Temperature sensors.
  • Page 5 B&C Electronics CL 7685.001 - Rev. B The set-point will consider the following parameters: Set-point value DB: dead band for the regulating action (only when relays output is selected) BP: proportional band Td: derivative time integral time Alarm relay The unit contains a third SPDT relay designated as an alarm relay.
  • Page 6 B&C Electronics CL 7685.001 - Rev. B Configuration A number of programming functions are provided in the Configuration menu and are protected by a selectable access number, which must be entered to allow changes in this setting. The factory configuration has been designed in order to allow the prompt operation for the most popular applications.

  • Page 7: Technical Specifications

    B&C Electronics CL 7685.001 - Rev. B 2.2 TECHNICAL SPECIFICATIONS The Default values have been selected in order to allow a prompt operation of the unit in the most popular applications. Parameters marked by " * " can be modified in the Configuration procedures.
  • Page 8 B&C Electronics CL 7685.001 - Rev. B ACTUATOR PARAMETERS Default regulating type: Stepping motor/Analog Stepping m. motor time: 10.0/120.0 sec 20.0 s motor dead time: 0.0/20.0 sec 0.1 s motor start position in manual: 0.0/100.0% 0.0 % TEMPERATURE Default Input: RTD Pt100 Connection: 2/3 wires Measuring and compensation range: -2/+52 °C...
  • Page 9 B&C Electronics CL 7685.001 - Rev. B ANALOG OUTPUT 2 (regulating output) Default Current range: 0-20/4-20 mA 0/20 mA Point 1 corresponding to 0 mA or 4 mA: 0.0 % / 100.0 % 0.0% Point 2 corresponding to 20 mA: 0.0 % / 100.0 %...
  • Page 10 B&C Electronics CL 7685.001 - Rev. B GENERAL SPECIFICATIONS Alphanumeric display: 1 line x 16 characters Response time to 98% of value changing with TC=2%/°C - T=20°C - S=100% : < 5 sec for range 20.00 (Jumper x10 Off); < 15 sec for range 2.000 (Jumper x10 Off).

  • Page 11: Phisical Specifications

    B&C Electronics CL 7685.001 - Rev. B 2.3 PHISICAL SPECIFICATIONS The controller enclosure is designed for surface or panel mounting. It consists of an anodized aluminium case built according to the standard DIN 43700, with an aluminium panel coated with scratch-proof and non-corrosive polycarbonate membrane.

  • Page 12: Software Description

    B&C Electronics CL 7685.001 - Rev. B 3 SOFTWARE DESCRIPTION 3.1 KEYBOARD FUNCTION ù - it allows the operator to go to the next Display - it allows to go back to the main Display. The eventual new parameter values will not be memorized §...

  • Page 13: Readout Sequences

    B&C Electronics CL 7685.001 - Rev. B 3.2 READOUT SEQUENCES Applying the power to the instrument the display will show the selected input for approximately 3 seconds, then will show the main display (D0). O3 meter Polar. Cl2 meter Polar.
  • Page 14 B&C Electronics CL 7685.001 - Rev. B P/N and software release CL7685.001 R2.1x --------------------------- xx.xxPPM M ↑ (D0) Measures main display and deviations xx.xx PPM measuring value ↑ (↓) increasing the regulation (decreasing) +/-% deviation from the set-point MESSAGE FUNCTION "------"...
  • Page 15 B&C Electronics CL 7685.001 - Rev. B ---------------------------------- (D2) Actuator's model xxx.x% M ↑ xxx.x% actuator's value ↑ (↓) increasing the regulation (decreasing) measuring deviation from the set-point value (% of the scale) MESSAGE FUNCTION "M flashing" manual operating mode has been selected §...
  • Page 16 B&C Electronics CL 7685.001 - Rev. B § to activate the alarm values programming sequences ù to go to ---------------------------------- (D6) 01 xx.xmA/x.x pp selected analog output xx.xmA actual analog output value x.x pp actual input measuring value (PPM) ù...

  • Page 17: Calibration Sequences

    B&C Electronics CL 7685.001 - Rev. B 3.3 CALIBRATION SEQUENCES The following procedures will be available whenever the keyboard is unlocked. To unlock the keyboard follows the procedures mentioned in chapter 3.4. The following procedures allows the sensors calibration, the Set-point and alarm parameters programming.

  • Page 18: Zero And Sensitivity Calibration

    B&C Electronics CL 7685.001 - Rev. B 3.3.2 ZERO AND SENSITIVITY CALIBRATION Zero calibration ù to go to (D1) x.xxx PPM O3 § to access the calibration sequences ZERO: x.x µA Zero visualization £ to confirm the displayed value and to access the sensitivity cell visualization/calibration §...
  • Page 19 B&C Electronics CL 7685.001 - Rev. B Sensitivity calibration SENS: xxx.x % Sensitivity visualization ù to go back to (D1) £ to confirm the displayed value and to go back to (D1) § to access the sensitivity calibration routine The Sensitivity calibration is suggested when the readout is very low compared with the DPD test.
  • Page 20 B&C Electronics CL 7685.001 - Rev. B MESSAGE FUNCTION UPDATE the calibration is accepted SENS > 250.0% Sensitivity > 250.0% SENS > 12.5% Sensitivity < 12.5% NO UPDATE calibration is not accepted POSTPONED CALIBRATION This mode of calibration is useful when the value of Ozone (Cl) on water is unstable or when an immediate test is not available.
  • Page 21 B&C Electronics CL 7685.001 - Rev. B When the correct Ozone (Cl) value will be known from laboratory analysis, the operator must access the sensitivity calibration following the same above procedure. The instrument shows for a few seconds the following message: SAMPLE V.

  • Page 22: Actuator's Start Value Calibration In Manual Operating Mode

    B&C Electronics CL 7685.001 - Rev. B 3.3.3 ACTUATOR'S START VALUE CALIBRATION IN MANUAL OPERATING MODE ù to go to xxx.x% M ↑ (D2) § to access the calibration sequences The instrument will show the following message: CAL MEMO: xx.x% ù...
  • Page 23 B&C Electronics CL 7685.001 - Rev. B ò ç £ to press the three keys to turn to factory calibration ò ç to modify the actual reading £ to confirm and to go to the manual Temperature adjustment CAL T.M: xx.x...

  • Page 24: Set-Point Calibration

    B&C Electronics CL 7685.001 - Rev. B 3.3.5 SET-POINT CALIBRATION ù to go to SET: x.xxxPPM (D4) Set-point value § to access the calibration sequences Set value CAL SET: x.xxx x.xxx Set-point value ù to stop the procedure and to go back to (D4) ò...
  • Page 25 B&C Electronics CL 7685.001 - Rev. B ù to stop the procedure and to go back to (D5) ò ç to insert the alarm value £ to confirm and to go to the high alarm insertion CAL AL MAX:x.xxx AL MAX high alarm calibration x.xxx...

  • Page 26: Configuration

    B&C Electronics CL 7685.001 - Rev. B 3.4 CONFIGURATION The following operations are possible: - keyboard locked/unlocked selection - display contrast selection - access number insertion ù to go to (D8) Configuration § to access the configuration sequences 3.4.1 KEYBOARD LOCKED/UNLOCKED...

  • Page 27: Access Number

    B&C Electronics CL 7685.001 - Rev. B £ to confirm and to go to the access number insertion 3.4.3 ACCESS NUMBER Access Nr.: xxx Access number request ù to go back to (D8) ò ç to insert the access number (when keeping the key pressed the number will scroll with 3 speed level) £...

  • Page 28: Scale Multiplier X10

    B&C Electronics CL 7685.001 - Rev. B 3.4.6 SCALE MULTIPLIER X10 Install a jumper between 20-22 terminal and select "jumper x10: ON" in order to extend the input range. Jumper x10: OFF Jumper x10: ù ò ç £ Active keys: Input range Range: 20.0PPM...

  • Page 29: Cell Polarization Voltage

    B&C Electronics CL 7685.001 - Rev. B 3.4.9 CELL POLARIZATION VOLTAGE CAL POL.: 200mV – POL.-200 mV actual polarization Voltage ù £ Active keys: This Polarization Voltage is calibrated during the manufacturing and it may be changed by means of the internal trimmer marked BM(R14).

  • Page 30: Actuator Type

    B&C Electronics CL 7685.001 - Rev. B CAL P1: x.xxx O3 begin of range x.xxx O3 measuring value related to 0 mA (or 4 mA) ù ò ç £ Active keys: CAL P2: x.xxx O3 end of range x.xxx O3 measuring value related to 20 mA ù...

  • Page 31: Feedback Actuator Function

    B&C Electronics CL 7685.001 - Rev. B 3.4.15 FEEDBACK ACTUATOR FUNCTION This function is not available in the Release R:2.1x. You must select Off. Feedback: Off ù ò ç £ Active keys: 3.4.16 SERVOMOTOR TIME This calibration allows to store into the memory the elapsed time for the complete excursion of the servomotor.

  • Page 32: Proportional Band

    B&C Electronics CL 7685.001 - Rev. B 3.4.19 PROPORTIONAL BAND CAL PB: xxx.x% ù ò ç £ Active keys: 3.4.20 INTEGRAL TIME CAL Ti: xxx sec ù ò ç £ Active keys: 3.4.21 DERIVATIVE TIME CAL Td: xx sec ù...

  • Page 33: New Access Number

    B&C Electronics CL 7685.001 - Rev. B 3.4.23 NEW ACCESS NUMBER Change A Nr.:NO Change A Nr.:YES NO access number changing not required YES access number changing required ù ò ç £ Active keys: Two possible alternatives A or B: "NO"...

  • Page 34: Installation

    B&C Electronics CL 7685.001 - Rev. B 4 INSTALLATION Packing list The instrument packaging contains: - N° 1 instrument with serial number label - N° 2 brackets for panel mounting - N° 1 English instruction manual according to IEC N° 278 standard - N°...

  • Page 35: Electrical Installation

    B&C Electronics CL 7685.001 - Rev. B 4.2 ELECTRICAL INSTALLATION Refer to the back panel drawing, described in Fig. 2 and in Fig 3. All connections are made with extractable terminal blocks on the back panel. The power connections are on the lower terminal block (13 positions).
  • Page 36 B&C Electronics CL 7685.001 - Rev. B Use a low noise coax cable on overall length between sensor and input terminals of the meter. Avoid interruption on the cable if a coax connector and a high insulation terminal strip are not available.
  • Page 37 B&C Electronics CL 7685.001 - Rev. B Connecting the stepping motor Using P.I.D. regulations through "stepping motors" actuators, it is possible to use the regulation relays contacts available on the rear terminal block, corresponding to the SPDT Regulator "A" (increase) and Regulator "B"...

  • Page 38: Operating The System

    B&C Electronics CL 7685.001 - Rev. B 5 OPERATING THE SYSTEM The installed unit allows the following operations: - measuring; - measuring and regulating (P.I.D.); - measuring, regulating and recording. The factory configuration allows a prompt operation in the most popular applications.
  • Page 39 B&C Electronics CL 7685.001 - Rev. B Manual operation When the instrument is programmed for the manual operation the flashing 'M' will appear on the Display. Analog output and alarm relay will remain activated. ò while pressing the key, A relay will be activated ç...

  • Page 40: Calibration

    B&C Electronics CL 7685.001 - Rev. B 6 CALIBRATION ò ç £ To turn to the Factory calibration press keys during the calibration procedure. (See "Zero/Sensitivity calibration" and "Temperature calibration"). The calibration procedure is same for both Potentiostatic and membraned sensors.
  • Page 41 B&C Electronics CL 7685.001 - Rev. B Simulate the value 0 nA and read the value 0.0 PPM on the display. In alternative disconnect the sensor to read 0.0 PPM Simulate the value 2000 nA (if potentiostatic sensor is used) and read the value 1.00 PPM on the display.

  • Page 42: Preventive Maintenance

    B&C Electronics CL 7685.001 - Rev. B 7 PREVENTIVE MAINTENANCE Controller Quality components are used to give the controller a high reliability. The frequency of such maintenance depends on the nature of each particular application. As in any electronic equipment, the mechanical components, such as switches, relays and connectors, are the most subject to damage.
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  • Page 48 B&C Electronics CL 7685.001 - Rev. B N O T E - 48 -...
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