Lumel N32O User Manual
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Lumel N32O User Manual

Digital panel meter
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N32O
User's manual
1
DIGITAL PANEL METER
N32O
SERVICE MANUAL

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  • Page 1 N32O User's manual DIGITAL PANEL METER N32O SERVICE MANUAL...

  • Page 2: Table Of Contents

    N32O User's manual Contents 1 Application............................3 2 Meter set............................5 3 Basic requirements, operational safety.....................5 4 Installation............................6 4.1 Installation method........................6 4.2 External connection diagram....................7 5 Service............................10 5.1 Description of the frontal plate....................10 5.2 Buttons' functions........................12 5.3 Programming meter parameters....................13 5.3.1 How to change quantity of a selected parameter............16 5.3.2 Programmable meter parameters, default parameters.............16...

  • Page 3: Application

    User's manual 1 Application The N32O meter is a digital panel meter adapted to be fixed to the panel. The N32O meters are designed to measure the number of pulses, period, frequency, rotational speed, number of pulses and their frequency, working time, position (support for an incremental encoder) or any other value that is a derivative of the mentioned parameters.
  • Page 4 N32O User's manual Integrated mathematical functions - individual for each channel. • Two individual characteristics enabling the conversion of the main measuring value • in a given channel according to the programmed characteristic. High contrast LCD display with built-in backlight.

  • Page 5: Meter Set

    Seal – 1 pc • 3 Basic requirements, operational safety In terms of a user safety, the N32O meter meets the requirements of the EN61010-1 standard for the devices intended for use in facilities compliant with the third category of installations.

  • Page 6: Installation

    Removal of the meter electronics during the warranty period voids the warranty. • 4 Installation 4.1 Installation method The N32O meters are designed to be mounted in a panel. Prior to installation a 92 +0.6 +0.6 mm slot must be made in the panel. The maximum thickness of the panel material cannot exceed 6 mm.

  • Page 7: External Connection Diagram

    User's manual Fig. 3: Meter overall dimensions. 4.2 External connection diagram The N32O meter has three detachable terminal strips to connect the wires of a cross- section up to 2.5 mm and 1.5 mm for the input circuits. The view of the meter from the connectors' side is shown in Fig.
  • Page 8 N32O User's manual Detailed description of the signals is shown in the table below, and the connection of the measuring signals is shown in Fig. 6. Terminal Function Description C, 1A, Binary (Measuring) Binary (Measuring) inputs for connecting the measuring...
  • Page 9 The example of input signal connections to connect the sensors with PNP output (Fig. 6a) and NPN output (Fig. 6b) is shown below. Fig. 6: Connection of the N32O meter. In the example shown above, the sensor is supplied from the auxiliary power supply output.

  • Page 10: Service

    N32O User's manual Fig. 7: Example of connecting an incremental encoder with PNP outputs. 5 Service The N32 meter user interface includes an LCD display and the buttons which enable to display the measuring value, a full configuration and setting of the meter or modification of the parameters.
  • Page 11 N32O User's manual according to configuration, a unit or current time. Measuring value averaging indicator. Illuminated averaging indicator informs that the set measuring value averaging period has not elapsed yet. State of auxiliary input I3. State of auxiliary input I4.

  • Page 12: Buttons' Functions

    N32O User's manual varh 5.2 Buttons' functions Cancel button: Exiting the menu and exit to the main screen. • Exiting a lower level of the menu and return to a higher level. • Canceling changing the set value (when editing the parameter value) •...

  • Page 13: Programming Meter Parameters

    N32O User's manual press first the button , and then the button and holding them until DELMIN message is displayed. Deleting alarm memory - hold down the buttons for 3 seconds. ClrAL message will be displayed after deleting alarm memory.
  • Page 14 N32O User's manual While navigating the meter main menu with the groups of the parameters, the upper line of the display shows the name of the group and the lower line continuously displays the word MENU. After entering the group of the parameters (after pressing the confirm button), the upper line displays the value of a given setting and the lower line shows the name of the parameter which value is displayed in the upper line.
  • Page 15 N32O User's manual The function of the Filter - minimum The function of the Filter - minimum Filter - minimum additional input no. duration of the low additional input no. duration of the high duration of the low level on the input no.

  • Page 16: How To Change Quantity Of A Selected Parameter

    5.3.2 Programmable meter parameters, default parameters The N32O meters have a number of programmable parameters, which enable the meter to be adapted to the requirements of application. The parameters grouped according to the menu are shown in the tables below.
  • Page 17 N32O User's manual tACHO – Rotation speed measurement. Additional frequency measurement. ENC* – Counter working with the encoder. CNtFL* – Pulse counter with frequency measurement. The mode dedicated for the meters, it is possible to determine the flow rate in addition to counting. For example, the meter works with a flow meter, counts the pulses from the flow meter and converts the flow rate.
  • Page 18 N32O User's manual only data acquisition period for the averaging algorithm using the moving window method. Number of the item for moving window method Default: OFF averaging. Each item is a measurement taken in SAVG time. Note: The averaging using the moving window method is disabled for the counter types.
  • Page 19 N32O User's manual The setting range is the same as for IN3 F parameter. Minimum duration of a low level on meter input Default: 10 I4 before it is considered as the low level. Pulses with a shorter low level duration are 0…65535...
  • Page 20 N32O User's manual measurement). MIN MW – minimum value registered during the averaging period of the moving window method (during the window) MAX MW – maximum value registered during the averaging period of the moving window method (during the window) Note: The window length can be programed (MAVG parameter).
  • Page 21 N32O User's manual Table 5 Parameter Description Range of changes symbol Default: IND 1 IND 1 – measuring value on the main input converted by the mathematical functions, individual characteristics and without averaging using the moving window method. Note: Averaging is not active for the counter type measurement modes.
  • Page 22 N32O User's manual Table 6 Parameter Description Range of changes symbol Default: 1 MODBUS network meter address 1…247 The transmission frame type of RS-485 Default: F8N1 interface. Setting the parity bits and the number of stop bits. F8N1 F8N2 F8O1 F8E1 Default: 9.6k...

  • Page 23: Meter Functions

    5.4.1 Measurement The measuring inputs, main and additional inputs of the N32O meters can work in various measuring modes. Certain functionalities for each type of the inputs are enabled, disabled, or the purpose of a given setting changes, e.g. the filtering time for the fast counter mode is expressed in microseconds, and for the slow counter mode in milliseconds.
  • Page 24 N32O User's manual Table 9 Mode Functions of measuring inputs Filtering Automatic Averaging the waveform reset Multiplication, of a Measurement (measurement External division measurement functions using moving additional Symbol Description pulse Keypad a constant window quantity duration control method Change of...
  • Page 25 N32O User's manual Fig. 11: Graphical example of the signal filtering. Figure 11 shows how the filter works, where the InS signal is a disturbed input signal, while the InF signal is the signal after passing the filter, and tL and tH are the filter settings. The signal levels with the times shorter than the filter settings are ignored and do not change the state of the filtered signal.

  • Page 26: Fast Changing Pulses Counter

    N32O User's manual Fig. 12: Measurement recalculation. Additionally, the range of the values displayed on the main display field (display upper line) can be limited by the user by defining the minimum and maximum displayed value. Exceeding set lower threshold of the measurement (the measuring value lower than the...
  • Page 27 N32O User's manual Active individual characteristic. • Configuration parameters: SCAL – selection of the operation to be performed on the counted number of • pulses of the meter. Possibility to select division or multiplication by the value defined by CONSt parameter.

  • Page 28: Slow Changing Pulses Counter

    N32O User's manual 5.4.1.2 Slow changing pulses counter Counter main features: Counting the pulses with a frequency of up to 500 Hz. • Input status scanning with a frequency of 1kHz. • Input waveform filtering (for duration of a given level > 0 ms).

  • Page 29: Period Measurement

    N32O User's manual bCtrL – Permission to control the counter using the meter keypad. The control • functions using the meter buttons are enabled for ON setting. The following operations can be done using the keypad: start/stop counting, counter reset.

  • Page 30: Frequency Measurement

    N32O User's manual Configuration parameters: SCAL – selection of the operation to be performed in the measured period of the • input signal. Possibility to select division or multiplication by the value defined by CONSt parameter. CONSt – defines the value by which the value of the measured period will be •...
  • Page 31 N32O User's manual High measurement resolution. • Programmable measurement time (gating). • Automatic change of the measurement method depending on the frequency of the • input signal (counting the internal pulses within the input signal period or counting the number of the external pulses in the set gating time).

  • Page 32: Rotation Speed Measurement

    N32O User's manual period of the measuring signal. The meter will display the value 0, if during the time set by this setting a full period of the measuring signal is not present. MAVG – number of the measurements with a period based on SAVG setting which •...

  • Page 33: Encoder (Only The Main Input)

    N32O User's manual rotation speed. Possibility to select division or multiplication by the value defined by CONSt parameter. This parameter should normally be set to DIV value, then CONSt value defines the number of pulses per one rotation. CONSt – defines the value by which the value of a rotation speed will be multiplied •...
  • Page 34 N32O User's manual The control of the signal on I1B input (no signal changes on this input will stop • counting despite the correct waveform on I1A input). Automatic detection of the rotation direction. • High operating frequency (up to 20,000 Hz).

  • Page 35: Pulse Counter With Pulse Speed Measurement (Main Input Only)

    N32O User's manual MAVG – number of the measurements with a period based on SAVG setting defines • the time interval in which the minimum and maximum value will be determined. Counting the average value using the moving window method in the encoder mode is not available.
  • Page 36 N32O User's manual pulses and measured pulse speed (frequency). Possibility to select division or multiplication by the value defined by CONSt parameter. This parameter should normally be set to DIV value, and CONSt parameter should define the number of pulses per single count (a constant of the connected energy meter, flow meter, etc.).
  • Page 37 (productivity), e.g. in m/min. Configuration example Let's assume that the N32O meter will work with a flow meter that generates 100 pulses per m of water. The upper line of the display should indicate a flow counter value, and in the lower line should display the flow rate in m /h.

  • Page 38: Working Time Measurement

    N32O User's manual completed measurement configuration. Set the required displayed resolution, e.g. 000000 format, and the meter will display with an accuracy of 1 m 5.4.1.8 Working time measurement Measurement main features: Working time measurement with an automatic display format depending on the •...

  • Page 39: Time Measurement

    5.4.1.10 Additional counters I3 and I4. The binary inputs I3 and I4 of the N32O meters use the unidirectional pulse counters that count the pulses independently of the functions assigned to the inputs. The value of the counted pulses and the counters control are available via the RS-485 interface.

  • Page 40: Minimum And Maximum Measuring Values

    Fig. 13: The message after resetting the maximum value. 5.4.1.13 Mathematical functions The N32O meters have a functionality that enables the conversion of the measuring value on the main or auxiliary input by the selected mathematical function (MAtH setting): Sqr – measured value is squared. •...

  • Page 41: Individual Characteristic

    5.4.1.14 Individual characteristic The measuring value measured by the N32O meter can be converted by the provided individual characteristic (separate for the main input and for the auxiliary input). It is important when using the mathematical functions to pay attention to the order of operations - the mathematical functions are completed before the individual characteristic, which should be taken into account when specifying the points coordinates x values.

  • Page 42: Analog Output

    (see Table 9). 5.4.2 Analog output The N32O meters can have one analog output (depends on the ordering code) connected to the meter terminals as a voltage output (0...10 V output) and as a current output (0...20 mA or 4...20 mA). The analog output is galvanically separated from the other meter circuits.

  • Page 43: Alarm Outputs

    5.4.3 Alarm outputs The N32O meters are equipped with one alarm output as standard. They can have 4 alarm outputs as an option, including three outputs with a switching contact. The alarm output element are electro-magnetic relays. If the meter is physically equipped with one alarm, 4 alarms are still available in the meter menu.
  • Page 44 N32O User's manual the alarms. Fig. 13 shows how the alarms work in n-on, n-off, off and on modes. Additional manual working modes H-on and H-oFF enable to permanently activate or deactivate the alarms. An additional REG operation mode has also been added to the alarm type settings.

  • Page 45: Rs-485 Interface

    The terminals A, B and GNDI terminals which location is shown in Fig. 5 allow to connect the RS-485 interface to the N32O meter. It is required to connect the lines A and B in parallel with their equivalents in other devices to obtain the correct transmission.

  • Page 46: Description Of The Modbus Protocol Implementation

    Maximum response time: 50 ms. • 5.5.3 Implemented functions of MODBUS protocol The following functions of the MODBUS protocol have been implemented in the N32O meters: 03 (03h) – readout of registers group. • 04 (04h) – readout of input registers group.

  • Page 47: Map Of The Registers

    5.5.4 Map of the registers The register map of the N32O meter is divided into separate groups of 16-bit or 32-bit registers. Data stored in 32-bit registers are additionally available in the format of 16-bit registers, with the value of one 32-bit register is stored in two 16-bit registers.
  • Page 48 N32O User's manual Type of operation used for the measured value on the main input Value Type of operation 4001 0, 1 Dividing by a constant. Multiplication by a constant. Minimum duration of a low level on the main input before it is 4002 0…65535...
  • Page 49 N32O User's manual considered as the low level. Value in microseconds or milliseconds (see Section 5.3.2 and 5.4.1). Minimum duration of a high level on the additional input before it is 4012 0...65535 considered as the high level. Value in microseconds or milliseconds (see Section 5.3.2 and 5.4.1).
  • Page 50 N32O User's manual Reset the counters of the main and the additional input. The counters are reset if the input changes from inactive to active (control by edge). Minimum duration in milliseconds of the low level on the input no. 3 4018 0…65535...
  • Page 51 N32O User's manual Value additionally measured on the main input during the measurement of the main value selected according to the configuration of the main input type (e.g. a frequency in the period measurement). Measuring value on the additional input, without the mathematical operations and the individual characteristic, not averaged.
  • Page 52 N32O User's manual conversions. Value additionally measured on the main input (e.g. period during the frequency measurement). Measuring value at the additional input, averaged and converted using the individual characteristic and the mathematical functions. Measuring value at the additional input, averaged without conversion using the mathematical functions and the individual characteristic.
  • Page 53 N32O User's manual H-off – manually enabled REG – state controlled by the RS-485 interface 4040 0...900 Alarm activation delay in seconds. 4041 0...900 Alarm deactivation delay in seconds. 4042 0, 1 Alarm activation memory. Entering the value 1 activates the alarm event memory function.

  • Page 54: Registers 4200 - 4257

    N32O User's manual deactivates the alarm. 4069 0, 1 Alarm 4 - alarm state control for the active alarm in REG mode. Entering the value 1 activates the alarm. Entering the value 0 deactivates the alarm. Alarms - Deleting alarm memory...
  • Page 55 N32O User's manual 4203 Meter serial number - older 16 bits. 4204 Meter serial number - younger 16 bits. 4205 Meter calibration date - older 16 bits. 4206 Meter calibration date - younger 16 bits. 4207 Total meter operation time in seconds - older 16 bits.

  • Page 56: Registers 7500 - 7521 And 7000 - 7043

    N32O User's manual 4237 Corrupted configuration registers from register group 4000. 4238 Corrupted configuration registers from register group 7600. 4239 Corrupted calibration registers - no calibration. 4240 The meter is not calibrated. 4241 Communication error with the analog output module.

  • Page 57: Registers 7600 - 7744 And 7200 - 7489

    N32O User's manual Maximum value of measuring quantity on the main input registered during the averaging window 7508 7016 (during the selected averaging period). Measuring value on the auxiliary input without the mathematical functions, averaging using the 7509 7018 moving window method and without the individual characteristic.
  • Page 58 N32O User's manual the output will have the maximum value (according to the output range). The value of the analog output signal for manual 7608 7216 0...22 operation or during a measurement error at the input. Alarms – alarm state change thresholds...
  • Page 59 N32O User's manual 7646 7292 -99999...999999 7647 7294 -99999...999999 7648 7296 -99999...999999 7649 7298 -99999...999999 7650 7300 -99999...999999 7651 7302 -99999...999999 7652 7304 -99999...999999 7653 7306 -99999...999999 7654 7308 -99999...999999 7655 7310 -99999...999999 7656 7312 -99999...999999 7657 7314 -99999...999999 7658 7316 -99999...999999...
  • Page 60 N32O User's manual 7687 7374 -99999...999999 7688 7376 -99999...999999 7689 7378 -99999...999999 7690 7380 -99999...999999 7691 7382 -99999...999999 7692 7384 -99999...999999 7693 7386 -99999...999999 7694 7388 -99999...999999 7695 7390 -99999...999999 7696 7392 -99999...999999 7697 7394 -99999...999999 7698 7396 -99999...999999 7699 7398 -99999...999999...
  • Page 61 N32O User's manual 7730 7460 -99999...999999 7731 7462 -99999...999999 7732 7464 -99999...999999 7733 7466 -99999...999999 7734 7468 -99999...999999 7735 7470 -99999...999999 7736 7472 -99999...999999 7737 7474 -99999...999999 7738 7476 -99999...999999 7739 7478 -99999...999999 7740 7480 -99999...999999 7741 7482 -99999...999999 7742 7484 -99999...999999...

  • Page 62: Error Codes

    User's manual 6 Error codes The N32O meters have several diagnostic functions and settings built-in that allow to limit the displaying. So the display may show and the status registers may store information about the diagnosed error, event or fault. Possible messages and their potential causes are listed below.

  • Page 63: Technical Data

    N32O User's manual 7 Technical data Measuring ranges Indication range Class, Input type measurement error Main input Pulse counter -99999...999999 ±1 pulse Slow changing pulses -99999...999999 ±1 pulse counter Period 0.00005...3600 [s] 0.001 Frequency 0.017...20,000 Hz 0.001 Rotation speed 0...999999 0.001...
  • Page 64 N32O User's manual Parameters of measuring loops, binary inputs Low level voltage (inactive input) < 4 V High level voltage (active input) > 7 V Current drawn by the input at 24 V 3.8 mA Maximum continuous operating voltage of the binary input...
  • Page 65 N32O User's manual Analog output Voltage output Rated range 0…10 V Maximum output voltage < 15 V Minimum load resistance 500 Ω Intrinsic error 0.1 % of range Error due to temperature change 50% of intrinsic error value / 10 K...
  • Page 66 N32O User's manual Electromagnetic compatibility Noise immunity: acc. to EN 61000-6-2 Noise emission: acc. to EN 61000-6-4 Safety requirements acc. to EN 61010-1 Circuit-to-circuit insulation: basic Installation category: Pollution grade Maximum phase-to-earth operating 50 V for the measurement circuits. voltage: 300 V for the circuits: supply, alarm.

  • Page 67: Ordering Code

    N32O User's manual 8 Ordering code Panel meter N32O type XXXXXXX Supply voltage 85..253 V AC, 90...300 V DC 20...40 V AC, 20...60 V DC Outputs / Interface 1 relay output, RS-485 4 relay outputs, RS-485 4 relay outputs, RS-485, 1 analog output...
  • Page 68 N32O User's manual LUMEL S.A. ul. Słubicka 4, 65-127 Zielona Góra, POLAND tel. 68 45 75 100 www.lumel.com.pl Technical support: tel.: (+48 68) 45 75 143, 45 75 141, 45 75 144, 45 75 140 e-mail: export@lumel.com.pl Export department: tel.: (+48 68) 45 75 130, 45 75 131, 45 75 132 e-mail: export@lumel.com.pl...
  • Page 69 N32O User's manual...

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