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Kobold ZOK-ZxP Operating Manual

Flow-counter/-dosing unit/-controller
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Operating Manual
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Flow-Counter/-Dosing Unit/-Controller
Model:
ZOK-ZxP
ZOK-ExK/ZxK
ZOK-ZxF
ZOK-ExM/ZxM

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Summary of Contents for Kobold ZOK-ZxP

  • Page 1 Operating Manual Flow-Counter/-Dosing Unit/-Controller Model: ZOK-ZxP ZOK-ExK/ZxK ZOK-ZxF ZOK-ExM/ZxM...

  • Page 2: Table Of Contents

    Ordering Details ..................58     Dimensions ....................59     EU Declaration of Conformance ..............60     Manufactured and sold by: Kobold Messring GmbH Nordring 22-24 D-65719 Hofheim Tel.: +49(0)6192-2990 Fax: +49(0)6192-23398 E-Mail: info.de@kobold.com Internet: www.kobold.com Page 2 ZOK K14/0917...

  • Page 3: Note

    ZOK-E/-Z 2. Note Please read these operating instructions before unpacking and putting the unit into operation. Follow the instructions precisely as described herein. The devices are only to be used, maintained and serviced by persons familiar with these operating instructions and in accordance with local regulations applying to Health &...

  • Page 4: Instrument Inspection

    (NEMA 4X). The electronics are housed in a UV-resistant, glass-filled nylon housing with stainless steel screws and FPM seals. The options ZOK-ZxP are in a panel mount housing 96x96 mm with protection class IP44. The option ZOK-ZxF is available in powder coated aluminum extruded housing with Plastic lids and appropriate protection class IP 66/67.

  • Page 5: Instrument / Functions Overview

    ZOK-E/-Z 6. Instrument / Functions overview Function Z1P/Z1F Z2P/Z2F Z3P/Z3F Dual Counter Dosing function Controller function Certification ATEX Certification Power supply DC-Supply AC-Supply Battery operation Sensor supply (only with external power supply) 8 V/ 8 V/ 8 V/ Sensor supply 24 V 24 V 24 V...

  • Page 6: Electrical Connections

    ZOK-E/-Z 7. Electrical connections 7.1 Cable entry for housing option -K Up to 3 cable entries (M20x1.5 or ½ "NPT) are available for electric connection in case of electronics with plastic housing. To use these cable inlets, the existing factory protection caps must be broken with a tool (e.g.

  • Page 7: Overview Of Terminals Zok-E/Z With Supply Option 3 And 6

    ZOK-E/-Z 7.2 Overview of Terminals ZOK-E/Z with Supply option 3 and 6 7.3 Overview of Connections ZOK-Z with Supply option 0 and 6 ZOK K14/0917 Page 7...

  • Page 8: Power Supply

    ZOK-E/-Z 7.4 Power Supply Depending on functionality and features, the electronics offer different possibilities for power supply:  Options ZOK-Z2: External DC-Supply  Options ZOK-Z1: Battery and ext. DC-Supply  Options ZOK-Z3: Battery and ext. DC-Supply and 4-20 mA Loop current 7.4.1 Storing the counter readings The storage of meter readings is carried out after each measurement cycle in the...
  • Page 9 ZOK-E/-Z 7.4.4 Battery operation (only ZOK-Z1/-Z3 with supply option 3) The options ZOK-Z1/-Z3/-E1/-E3 can also be powered by a battery. In battery mode, the device function scope is relatively limited:  All electrical outputs (switching outputs, analogue output, pulse output, status output) are disabled during battery operation.
  • Page 10 ZOK-E/-Z Sleep mode 1 In sleep mode 1, the display will be active with an indication ‘SLEEP’ on the display. In Menu, if the electronics goes to sleep mode, then the last displayed content will be frozen. The menu can be further used by pressing keys anytime. Sleep mode 2 In sleep mode 2, the counter values are periodically calculated and displayed on the display, as long as the pulses are present on either Input A or Input B.
  • Page 11 ZOK-E/-Z The supplied battery type 3.6 V AA Lithium (2200 mAh) should be inserted in the battery holder on the back side of the electronic (correct polarity is important!). The following type of battery is required to replace the supplied battery: 3.6 V Lithium, Size AA, minimum capacity 2200 mAh, IEC-Type CR14505 e.g: EVE Type ER14505M, SAFT LS14500, TADIRAN SL360S/SL760 Battery life duration: The achievable battery life is dependent on various factors:...

  • Page 12: Sensor Inputs

    ZOK-E/-Z 7.5 Sensor Inputs 7.5.1 Active pulse signal Power Supply: External DC-Supply Signal input setting: „AKTIVES SIGNAL“ Wiring for ZOK-Z with Supply option 3 and 6: Wiring for ZOK-Z with Supply option 0 and 6: Page 12 ZOK K14/0917...
  • Page 13 ZOK-E/-Z 7.5.2 Hall Sensor, NPN- and PNP-Sensors Power supply: only external DC-supply Signal input setting: „HALL“ Signal input setting: „NPN“ Signal input setting: „PNP“ Wiring for ZOK-Z Supply option 3 and 6: ZOK K14/0917 Page 13...
  • Page 14 ZOK-E/-Z Wiring for ZOK-Z with Supply option 0 and 6: 7.5.3 Reed switch (-R0 Sensor option) Power supply : External DC-supply, Battery operation or 4-20 mA loop current Signal input setting: „REED “ Wiring for ZOK-Z with Supply option 3 and 6: Page 14 ZOK K14/0917...
  • Page 15 ZOK-E/-Z Wiring for ZOK-Z with Supply option 0 and 6: 7.5.4 Inductor Power supply: External DC-supply and battery operation (Battery operation reduces battery life) Signal input setting: „Inductor“ Wiring for ZOK-Z with Supply option 3 and 6: ZOK K14/0917 Page 15...
  • Page 16 ZOK-E/-Z Wiring for ZOK-Z with Supply option 0 and 6: 7.5.5 Namur-Sensor Power supply: only external DC-supply Signal input setting: „NAMUR“ Wiring for ZOK-Z with Supply option 3 and 6: Page 16 ZOK K14/0917...
  • Page 17 ZOK-E/-Z Wiring for ZOK-Z with Supply option 0 and 6: 7.5.6 Transducer model UMF2 Power supply: only external DC-supply Signal input setting: „NPN“ Wiring for ZOK-Zx with Supply option 3 and 6: ZOK K14/0917 Page 17...
  • Page 18 ZOK-E/-Z Wiring for ZOK-Zx with Supply option 0 and 6: 7.5.7 PMG (magnetic inductive with frequency output) Supply Voltage: only external DC power supply Signal input setting: Wiring for ZOK-Zx with Supply option 3 and 6: Page 18 ZOK K14/0917...
  • Page 19 ZOK-E/-Z Wiring for ZOK-Zx with Supply option 0 and 6: ZOK K14/0917 Page 19...
  • Page 20 ZOK-E/-Z 7.5.8 with voltage pulse output DOR-with Hall sensor output Page 20 ZOK K14/0917...

  • Page 21: Control Inputs

    ZOK-E/-Z 7.6 Control Inputs There are 3 control inputs for external controlling of instrument functions. The activation of each function can be done through: a.) an active control input or b.) Carried out by a passive N/O contact. In both cases, the function will be activated on switching from HIGH to LOW level (falling edge).
  • Page 22 ZOK-E/-Z Wiring for ZOK-Z with Supply option 3 and 6: Wiring for ZOK-Z with Supply option 0 and 6: Page 22 ZOK K14/0917...

  • Page 23: Analogue Output (Only Zok-Z3 With Supply Option '3/6/0')

    ZOK-E/-Z 7.7 Analogue Output (only ZOK-Z3 with Supply option ‘3/6/0’) 7.7.1 2-Wire Configuration 4-20 mA The options ZOK-Z3/-E3 can be operated as a source in a 2-wire 4-20 mA current loop. However, only passive Reed switch (option -R0) should be used as a sensor. In 2-wire loop operation, no other active outputs are available.
  • Page 24 ZOK-E/-Z Wiring for ZOK-Z3 with Supply option ‚3/6‘: Wiring for ZOK-Z3 with Supply option ‘0/6’: Page 24 ZOK K14/0917...
  • Page 25 ZOK-E/-Z 7.7.3 3-Wire Configuration as passive output, current sink (only ZOK-Z3 with Supply option ‘3/6’) In the wiring 3-wire passive current sink, the load (load) is connected between current output (+) and voltage source (+Vs). In the 3-conductor wiring, all types of sensors can be connected and all other outputs can be used.

  • Page 26: Switching Output (Only Zok-Z2/-Z3)

    ZOK-E/-Z 7.8 Switching output (only ZOK-Z2/-Z3) 7.8.1 Transistor Output The transistor outputs can be configured by software as PNP, NPN or push-pull output. In case of push-pull configuration, output will be switched between active-HIGH or LOW potential. The load can either be connected to GND or + Vs. In push-pull mode, no additional pull-up or pull-down resistor is required.

  • Page 27: Pulse Output And Status Output

    ZOK-E/-Z 7.9 Pulse Output and Status Output Pulse and status outputs are set to push-pull output type and provide an active digital signal with HIGH amplitude of about + Vs. Wiring for ZOK-Z3 with Supply option 3/6: ZOK K14/0917 Page 27...

  • Page 28: Operating And Menu Structure

    ZOK-E/-Z 8. Operating and Menu Structure 8.1 Overall 8.1.1 Functions of operating buttons Function Button Symbol Measuring mode Menu mode During the parameter setting, back to main menu / return to Enter Menu mode the measurement mode/jump Menu / Return to the previous decimal To be pressed position while setting...

  • Page 29: Measuring Mode

    ZOK-E/-Z 8.1.2.2 Numerical value input While setting parameters with numerical value, the assigned unit is always displayed above the input field in square brackets. The maximum size and the number of decimal places are fixed and cannot be changed. While setting the numerical value of a parameter, the left outer position is highlighted first.
  • Page 30 ZOK-E/-Z 8.2.2 Display layout in measuring mode single channel (ZOK-Z1/E1/Z3/E3) part- or total volume display input A part- or total volume display input A Unit associated to main display Page 30 ZOK K14/0917...
  • Page 31 ZOK-E/-Z 8.2.3 Display layout in measuring mode for dual channel (ZOK-Z1/E1/Z3/E3) ZOK K14/0917 Page 31...
  • Page 32 ZOK-E/-Z 8.2.4 Display layout in measuring mode for dossier ZOK-Z2 Page 32 ZOK K14/0917...

  • Page 33: Menu Mode

    ZOK-E/-Z 8.3 Menu Mode In the menu, all device parameters can be set. The individual parameters are organized into groups according to their function. While the menu mode is turned on, the input signal detection and pulse output (option -Z3) are still active in the background.

  • Page 34: General Functions

    ZOK-E/-Z 9. General Functions 9.1 MIN- MAX. Memory (not for ZOK-Z2) The MIN-MAX memory function stores the absolute maximum and minimum measured value of the flow rate since the last reset or since the last device start. The current memory values can be displayed and if required reset by pressing measurement mode.

  • Page 35: Overview Of Menu Functions/ Instrument Parameters

    ZOK-E/-Z 10.2 Overview of menu functions/ instrument parameters available Parameter Default with available with Menu level Sublevel Description Value range level value Electronics voltage type type German English Language English Z1,Z2,Z3 Battery,external  Spanish French Contrast Display contrast 0 -50 Z1,Z2,Z3 Battery,external ...
  • Page 36 ZOK-E/-Z available Parameter Default with available with Menu level Sublevel Description Value range level value Electronics voltage type type Two-channel subtraction Z1,Z3 Battery,external  operation Waiting time 1 – 20 s (Step Input Signal Timeout [1 s] Z1,Z2,Z3 Battery,external  size 0,5s) Filter Size Filter factor 1-50...
  • Page 37 ZOK-E/-Z available Parameter Default with available with Menu level Sublevel Description Value range level value Electronics voltage type type sets the decimal Decimal count Z1,Z3 Battery,external  points Reset subset Partvolume A reset Z1,Z2,Z3 Battery,external  Button counter A selection Yes / Reset subset Partvolume B reset Z1,Z3...
  • Page 38 ZOK-E/-Z available Parameter Default with available with Menu level Sublevel Description Value range level value Electronics voltage type type type Setting '0' flow to 0' Offset a particular 4-20 mA 4 mA external  current Change Changing user 5-digit number passwort password (00000 =>...

  • Page 39: Signal Input

    ZOK-E/-Z 10.3 Signal input 10.3.1 Signal input / Sensor type Each of the two pulse inputs can be optimally customized to different sensor types in Menu, so that at the time of connection no further additional wiring is required for correct function.
  • Page 40 ZOK-E/-Z 10.3.3 Signal Input / Input Timeout For the detection of input signals, the period duration of signal is determined within a measuring cycle i.e. Refresh time. However, if within the "refresh time" the input period is not complete i.e. if the input signal has a frequency lower than the frequency determined from the ‘’Refresh time’’, then the flow indicator is set to "0".
  • Page 41 ZOK-E/-Z 10.3.5 Signal Input / Scaling A The correct scaling of the signal inputs is necessary for exact indication on the display. For this purpose, entering the pulse rate of the connected sensors is necessary. For option ZOK-Z3/-E3 in single-channel mode for input A linearization function with up to 10 points is available.
  • Page 42 ZOK-E/-Z Such a case is illustrated in the graph below, in which Q2 <Q1, thus having a negative slope between A2 and A1. To correct this error, the bases must be checked and corrected if necessary. This must always apply: 10.3.6 Signal Input / Scaling B The scaling of input B is the same as input A.

  • Page 43: Rate Measurement

    ZOK-E/-Z 10.4 Rate Measurement 10.4.1 Rate Measurement / Refresh rate Parameter "Sampling rate" specifies the time interval within which the input signal is recorded, the flow rate is calculated and brought to display. The condition of all other outputs which depends on the flow rate (analogue output, switching outputs and status output) will be recalculated after the measurement time.

  • Page 44: Counter

    ZOK-E/-Z 10.4.6 Rate measurement / Memory Reset The "memory reset" function sets the MIN and MAX memory flow rate values to the current reading. 10.5 Counter All electronics have options of a (non-resettable) total counter and a (resettable) subset counter for each input channel. For devices with dosing function, only a total count is present, the subset counter acts as a dosing counter.
  • Page 45 ZOK-E/-Z Behaviour at OVERFLOW: If the measured volumetric flow lies in the OVERFLOW range, the pulse output is switched off and a constant HIGH level is switched at the output. Generation of the output pulse train: The maximum adjustable pulse rate for the pulse output is 1000 pulses per liter. This means that the minimum pulse volume that can be represented by the pulse output is 0.001 Liter per pulse.
  • Page 46 ZOK-E/-Z 10.6.4 Pulse output with 'A-B' and 'Direction detection function’ With „A-B“ function, it is possible that the flow rate goes into negative and the counter values start decreasing. In this case, any one of the two available switching outputs can be used to indicate the change of sign of flow rate.

  • Page 47: Switching Outputs (Only For Options Zok-Z2/-Z3)

    ZOK-E/-Z The number of pulses before and after the change of direction can be processed via external control system in order to determine the net volume. 10.7 Switching outputs (only for options ZOK-Z2/-Z3) There are two independently configurable limit switch outputs. With options ZOK-Z3, these can be parameterized with a limit function or window function.
  • Page 48 ZOK-E/-Z 10.7.2 Switching Output/ Output 1+2 / Source With "Source" parameter, the source of the switching output can be assigned to the "Input type" set in "Signal input" menu. If the "Input type" in menu "Signal Input" is set to Input A or direction detection, the switching output can be assigned only to the input A.
  • Page 49 ZOK-E/-Z 10.7.6 Switching output / Output 1+2 / Lower threshold The "lower threshold" defines the lower limit value when using the window function. This parameter is invalid when the limit function is used. The switching thresholds can be either set positive or negative. The setting of the negative switching thresholds finds its use in "A-B"...

  • Page 50: Dosing Function (Only Zok-Z2)

    ZOK-E/-Z 10.8 Dosing function (only ZOK-Z2) The dosing function is exclusively available for the options ZOK-Z2K / -Z2P. To build a dosing system, a flow sensor can be connected to input A and up to 2 switch actuators (valves) can be connected to the switching outputs (relay outputs). The use of the second input signal B is not possible.
  • Page 51 ZOK-E/-Z 10.8.2 Dosing function / Dosing value Parameter "dosing value" specifies the dosing volume. The setting for the dosing volume can also be accessed directly from the dosing function by pressing the control button (as long as the dosing is not started). 10.8.3 Dosing function / Dosing unit Parameter "dosing"...

  • Page 52: Analogue Output (Only Option Zok-E3/-Z3)

    ZOK-E/-Z 10.9 Analogue output (only option ZOK-E3/-Z3) The analogue output gives the actual displayed flow rate in a scale form of 4-20 mA current output. The analogue output can only be operated in 2- or 3-wire configuration. Analogue output / Flow rate for 20 mA The scaling of the analogue output is done through parameter "flow rate for 20 mA".

  • Page 53: Service

    If the user's password has been changed from "00000", password request will be generated on next entry to User menu. If the default password has been forgotten or misplaced, the master password can be requested from KOBOLD. 10.10.3 Service / User service / Factory defaults By activating this function, the user can reset the device to factory settings.
  • Page 54 ZOK-E/-Z 10.10.4 Service / User service / Menu item selection With this function, you can select all menu points from main menu, which are no longer displayed in menu mode and are adequately protected against parameter change. This function displays only the selected menu, the hidden parameters remain unchanged and active.

  • Page 55: Technical Details

    ZOK-E/-Z 11. Technical Details External power supply: 5…28 V (without using the analogue output) 8…28 V (with using the analogue output) 12…28 V with relay output max. power consumption: with DC supply voltage approx. 70 mA (with full backlight, without outputs) See table on page 55 for details Battery (battery for operation): 3.6 V/2200 mAh Lithium size AA Battery life in battery mode:...
  • Page 56 (see diagram) Analogue output (at ZOK-Z3P): 4-20 mA, 3-wire, current source Housing: ZOK-ZxP panel mounted, 96x96 mm, depth 60 mm degree of protection front IP65, backside IP20 ZOK-ZxF alumiunium housing with plastic lid PA6 117x117 mm, depth 127 mm Protection:...
  • Page 57 ZOK-E/-Z ZOK K14/0917 Page 57...

  • Page 58: Ordering Details

    ZOK-E/-Z 12. Ordering Details Example: ZOK-Z1 K M F 3 0 0) Electrical Model Electronics Housing Type connection/ Input Power supply Options Special Cable gland Z1 = dual totaliser K = universal mount = 3xM20x1.5 (standard, round = dosing unit cable entry plastic with holder plates)

  • Page 59: Dimensions

    ZOK-E/-Z 13. Dimensions ZOK-ZxK ZOK-Ex/-Zx ZOK-ZxP ZOK-ZxF ZOK K14/0917 Page 59...

  • Page 60: Eu Declaration Of Conformance

    ZOK-E/-Z 14. EU Declaration of Conformance We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole responsibility that the product: Flow-Counter/-Dosing Unit/-Controller Model: ZOK-Ex and ZOK-Zx to which this declaration relates is in conformity with the standards noted below: EN 61326-1:2013...

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