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Level Pro ITC 450 User Manual

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USER MANUAL
METER
ITC 450 - ITC 470
ITC 450
ITC 470
Read the user's manual carefully before starting to use the unit or software.
Producer reserves the right to implement changes without prior notice.
www. levelprosales.com
www. levelprosales.com

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Summary of Contents for Level Pro ITC 450

  • Page 1 USER MANUAL METER ITC 450 - ITC 470 ITC 450 ITC 470 Read the user's manual carefully before starting to use the unit or software. Producer reserves the right to implement changes without prior notice. www. levelprosales.com www. levelprosales.com...

  • Page 2: Table Of Contents

    ITC 450/470 User manual TABLE OF CONTENTS 1. BASIC REQUIREMENTS AND USER SAFETY 2. GENERAL CHARACTERISTICS 3. TECHNICAL DATA 4. DEVICE INSTALLATION 4.1. UNPACKING 4.2. ASSEMBLY 4.3. CONNECTION METHOD 4.4. MAINTENANCE 5. FRONT PANEL DESCRIPTION 6. PRINCIPLE OF OPERATION 6.1. MEASUREMENT MODE 6.2.

  • Page 3: Basic Requirements And User Safety

    ITC 450/470 User manual Explanation of symbols used in the manual: This symbol denotes especially important guidelines concerning the installation and operation of the device. Not complying with the guidelines denoted by this symbol may cause an accident, damage or equipment destruction.

  • Page 4: General Characteristics

    Input ranges are described in the next chapter. Result is showed on 4-digit LED display. The device can be equipped with two or four relay (or OC type) outputs. Optionally ITC 450/470 with two relays (or OC type) outputs can be equipped with active current output, passive isolated current output or active voltage output.
  • Page 5 ITC 450/470 User manual RTD input (resistive) Pt 100, Pt 500,Pt 1000 Measurement range -100°C ÷ +600°C Measurement accuracy ± 0,1% @ 25°C; ± one digit Measurement wires resistance max. 20 (every wire) Thermocouple input K, S, J, T, N, R, B, E Thermocouple input range K: -200°C ÷...
  • Page 6 -999 ÷ 9999, plus decimal point Communication interface RS-485, 8N1 and 8N2, Modbus RTU, not separated Baud rate 1200 bit/s ÷ 115200 bit/s ITC 450 Display LED, 4 digit, 20mm height, red or (depending on version) LED, 4 digit, 20mm height, green ITC 470 Display...

  • Page 7: Device Installation

    ITC 450/470 User manual according to: PN-EN 61010-1 installation category: II pollution degree: 2 voltage in relation to ground: 300V AC insulation resistance: >20M Safety requirements insulation strength between power supply and input/output terminal: 1min. @ 2300V insulation strength between relays terminal: 1min.

  • Page 8: Assembly

    ITC 450/470 User manual 4.2. ASSEMBLY The unit is designed for mounting inside housings (control panel, switchboard) insuring appropriate protection against surges and interference. Metal housings must be connected to ground in a way that complies with the governing regulations.
  • Page 9 ITC 450/470 User manual 92 mm 5 mm 12 mm 10 mm Figure 4.3. Installing of brackets, and dimensions of connectors 115 mm Figure 4.4. Minimum distances when assembly of a number of units www. levelprosales.com www. levelprosales.com...

  • Page 10: Connection Method

    ITC 450/470 User manual 4.3. CONNECTION METHOD Installation should be conducted by qualified personnel . During installation all available safety requirements should be considered. The fitter is responsible for executing the installation according to this manual, local safety and EMC regulations.
  • Page 11 ITC 450/470 User manual Avoid running signal cables and transmission cables together with power supply cables and cables controlling inductive loads (e.g. contactors). Such cables should cross at a right angle. Contactor coils and inductive loads should be equipped with interference protection systems, e.g. RC- type.
  • Page 12 ITC 450/470 User manual All connections must be made while power supply is disconnected ! RS - 485 Power +24V +5%, -10% (optional) supply Imax = 100mA DATA+ DATA- (depending on version) 5 6 7 8 9 10 11 12 13 14 15...
  • Page 13 ITC 450/470 User manual Power RS- 485 ACTIVE +24V +5%, -10% supply current output Imax = 100mA DATA+ (optional) DATA (depending on version) 5 6 7 8 9 10 11 12 13 14 15 31 32 33 34 35 n.c. n.c.
  • Page 14 ITC 450/470 User manual www. levelprosales.com www. levelprosales.com...
  • Page 15 ITC 450/470 User manual Temperature sensor can be connected to the device in typical 4-wire circuit (Figure 4.17a) or 3-wire circuit (Figure 4.17b). Due to precision of measurement 4-wire circuit is recommended. If 2 wire circuit is used, the resistance of wires should be as small as possible, to avoid of measurement errors.
  • Page 16 ITC 450/470 User manual The connection circuit should not be changed while unit is powered. While using TC, RTD or voltage inputs (0-150mV) the device is able to detect wire breaks. Wire breaks are detected within about 2 seconds. For connectors number 32 and 33 of RTD input it may take up to about 7 seconds. During detection measurements will be incorrect.
  • Page 17 ITC 450/470 User manual www. levelprosales.com www. levelprosales.com...

  • Page 18: Maintenance

    ITC 450/470 User manual 4.4. MAINTENANCE The unit does not have any internal replaceable or adjustable components available to the user. Pay attention to the ambient temperature in the room where the unit is operating. Excessively high temperatures cause faster ageing of the internal components and shorten the fault-free time of the unit's operation.

  • Page 19: Principle Of Operation

    ITC 450/470 User manual Symbols and functions of Push Buttons: Symbol used in the manual : [ESC/MENU] Functions: • Enter to main menu ( press and hold for at least 2 sec.) MENU • Exit the current Screen and Enter to previous menu (or measure mode) •...
  • Page 20 ITC 450/470 User manual "Lo r" parameter "Hi r" parameter nominal measurement range 4 mA 20 mA permissible measurement range Figure 6.1. Definitions of measurement ranges in mode 4 - 20mA If the result of measurement exceeds the permissible measurement range, warning ”-Hi-” or ”-Lo-” is displayed rather than input signal, depending on exceeded value (seedescription of “Lo r”...

  • Page 21: Detection Of The Peak Values

    6.2. DETECTION OF THE PEAK VALUES The ITC 450/470 controller is equipped with peaks detection function. It can detect a peaks of the input signal and display their values. Presets connected with this function are placed in ”HOLd” menu (see description of ”HOLd”...

  • Page 22: Control Of The Relay Outputs

    ITC 450/470 User manual 6.3. CONTROL OF THE RELAY OUTPUTS The control of the object (measured signal) is realized via relay outputs. Front panel LEDs named „R” indicates the state of particular relay output. If device is not equipped with one or more relay outputs, menus refer to this relays are available, but apply to LED indicators only.

  • Page 23: One Threshold Mode

    ITC 450/470 User manual 6.3.1. One Threshold Mode Figure 6.7 presents the principle of relay outputs operation for one threshold mode, and an example values of other parameters. “SEt P” parameter (expected signal value) “HYSt” parameter (allowed signal deviation) relay state...

  • Page 24: Two Thresholds Mode

    ITC 450/470 User manual If tA ,tB ,tC or tD (when input signal stay in zone A or zone B) are lower than parameters “t on” or “toFF”, the relay will not change his state (see points A and C, Figure 6.7 a, d, e).

  • Page 25: Device Programming

    ITC 450/470 User manual Figure 6.8 presents the principle of relay outputs operation for two thresholds mode, and an example values of other parameters. In this mode parameter “SEt P2” is accessible in common with “SEt P2”, this parameter describes a second threshold of the relay output. The parameters “HYSt”, “modE”, “t on”, “t oFF”, “unit” and “ALArmS”...

  • Page 26: Parameters Edition

    ITC 450/470 User manual Functions of the buttons while sub-menu and parameters choice: Selection of sub-menu or parameter for editing. Name of selected item (submenu or parameter) is displayed. Operation of [ENTER] button depend on present menu position: • if the name of some sub-menu is displayed - enter this sub-menu; name of the first...

  • Page 27: Numeric Parameters (Slide Change Mode)

    ITC 450/470 User manual 7.2.2. Numeric parameters (slide change mode) In “slide change” mode („Edit”=”Slid”), buttons [^] and [v] has different functions. To increase edited value press (or press and hold) [^] button only, the increasing became quickest as long as button [^] is pressed. To slow down the increasing, button [v] can be used. If [v] is pressed shortly (and button [^] is still pressed), increasing slow down for a moment only, if [v] is pressed and held while button [^] is still pressed the increasing slow down and will be kept on lower speed.

  • Page 28: Menu Description

    ITC 450/470 User manual 7.3. MENU DESCRIPTION Password checking. If the password is different from "0000", then the number (password must be entered every to enter main menu)every enter to main menu “- - - -” follows the entering of password. If entered password is correct then first menu position will be displayed other wise the warning "Err", and unit returns to...
  • Page 29 ITC 450/470 User manual "modE" - relay operation mode: "noAC" the relay is not active (permanently turned off ) one threshold mode, the relay is turned ON when input signal exceeds the SEtP + "on" HYSt value, and is turned off when the input signal became ower than SEtP – HYSt, one threshold mode, the relay is turned OFF when input signal exceeds SEtP + HYSt "oFF"...

  • Page 30: Beep" Menu

    ITC 450/470 User manual unit of time for “t on” i “toFF” parameters. The unit be set to one of two values: "min" "unit" minutes "SEC" seconds this parameter defines the relay reaction when some critical situations occurs: "noCH" relay do not change state, "on"...

  • Page 31: Inpt" Menu (Common Parameters)

    ITC 450/470 User manual 7.3.3. “inPt” menu (common parameters) This menu presets the measurement input: type of the input / sensor. This parameter can be set to values: ”0-20” - current input - range 0..20 mA, ”4-20” - current input - range 4..20 mA, ”0-5”...

  • Page 32: Inpt" Menu (Parameters Of Current And Voltage Inputs)

    ITC 450/470 User manual 7.3.5. “inPt” menu (parameters of current and voltage inputs) this option presets type of the conversion characteristic, and can be set to: ”Lin” - linear When one of those characteristics is chosen display range is defined “Sqr”...
  • Page 33 ITC 450/470 User manual - this option allows user to delete any of the points of the user defined characteristic. After selection current number of points of the user defined characteristic is displayed for about approx. 1.5 sec. After that device waits for selection of point being deleted (by [^], [v] buttons).

  • Page 34: Outp" Menu

    ITC 450/470 User manual If the measurement value do not exceeds permissible measurement range but displayed value exceeds range -999 ÷ 9999, the warning ”-Ov-” is displayed rather than the calculated result. 7.3.6. ”OutP” menu This menu contains parameters of analogue output control. Menu is available if the device is equipped witch analogue output.

  • Page 35: Bri" Parameter

    ITC 450/470 User manual this parameters define the output value range. If calculated output value Out exceeds defined range then analogue output generates signal equal to upper or lower border of the defined range. These parameters defines the percentage extension of nominal analogue range (with 0,1% resolution).

  • Page 36: Secu" Menu

    ITC 450/470 User manual - the type of detected changes of the input signal, can be set to values: “modE” ”norm” - peaks, peak and next drop of the input signal of value equal at least “PEA”, ”inv” - drops, drop and next peak of the input signal of value equal at least “PEA”, - minimal detected signal change classified as peak or drop (see Figure 6.4)

  • Page 37: Edit" Parameter

    ITC 450/470 User manual - this parameter sets the access to the configuration registers of the device. Possible values: ”mbAc” ”on” - configuration registers can be set via RS-485 interface, ”oFF” - configuration registers can not be set via RS-485 interface.

  • Page 38: Menu Structure

    ITC 450/470 User manual 7.4. MENU STRUCTURE www. levelprosales.com...
  • Page 39 ITC 450/470 User manual www. levelprosales.com...

  • Page 40: The Alarm Led

    ITC 450/470 User manual 8. THE ALARM LED Alarm LED (AL) lights in cases: • exceeding of permissible measurement range • detection of sensor malfunction (shortcut or break of measurement circuit) 9. OVER-CURRENT PROTECTION The current input of the device is equipped with over-current protection circuit. This circuit protects the standard resistor to damage.

  • Page 41: Linear Characteristic

    ITC 450/470 User manual 10.1.1. Linear characteristic The normalized result is converted by fixed coefficients determined by “Lo C” and “Hi C” parameters (when the normalized results is equal 0, then value “Lo C” is displayed, and when the normalized results is equal 1, then value “Hi C”...

  • Page 42: Square Root Characteristic

    ITC 450/470 User manual 10.1.3. Square root characteristic The normalized result is rooted and further conversion is done as for linear characteristic. Conversion is made accordingly with the expression: where W means the displayed value. Showed above expression is not valid when normalized result is negative. It is possible for 4-20 mode only.

  • Page 43: Examples Of Calculations

    ITC 450/470 User manual Figure. 10.4 Example of user defined characteristic 10.2. EXAMPLES OF CALCULATIONS Example 1: Selection of the permissible input range (“4-20” mode) If in “4-20” mode the user sets “Lo r” = 20,0% and “Hi r” = 10,0%, then permissible input currents range will be equal: 3,2 mA ÷...
  • Page 44 ITC 450/470 User manual a) I =10 mA and I = 0,375 Accordingly to expression on page 41 for linear characteristic: 0,375 × [1200 - (-300)] 337 and next, the “Lo C” value is added to the result , so the displayed value:...
  • Page 45 ITC 450/470 User manual Example 6: The user defined characteristic Let the input mode = 4-20 mA, and the user selected the 10 segment characteristic. To do this it is necessary to enter X and Y coordinates of 11 points (see Menu ”inPt”). The calculations will be done for three different input currents from example 2, so in calculations some of the segments will be used only.

  • Page 46: The Modbus Protocol Handling

    ITC 450/470 User manual Calculated Iout do not exceeds the output working range (3.8 - 21 mA). b) D = „20.5” According to formula from page 34: = (20.5-10.0) / (20.0-10.0) × 16 mA + 4 mA = 1.05 ·16 + 4 = 20.08 mA Calculated Iout do not exceeds the output working range (3.8 - 21 mA).

  • Page 47: List Of Registers

    ITC 450/470 User manual 11.1. LIST OF REGISTERS Register Write Range Register description -999 ÷ 9999 Measurement value (no decimal point) 0h, A0h, 60h, The status of the measurement; 0h - data valid; A0h - top border of the measurement C0h, 10h, range is exceeded;...
  • Page 48 ITC 450/470 User manual Register Write Range Register description 0 ÷ 999 “Lo r” parameter in “InPt” menu, in 0.1% “Hi r” parameter in “InPt” menu, in 0.1% 0 ÷ 199 “toFS” parameter in “InPt” menu (shift of measurement scale), -99 ÷...
  • Page 49 ITC 450/470 User manual Register Write Range Register description “modE” parameter in “rEL1” menu: 0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 0 ÷ 5 3 - “in” mode; 4 - “out” mode; 5 - “modb” mode “t on”...
  • Page 50 ITC 450/470 User manual Register Write Range Register description “unit” parameter in “rEL3” menu : 0 ÷ 1 0 - seconds; 1 - minutes “AL” parameter in “rEL3” menu: 0 ÷ 2 0 - no changes; 1 - on; 2 - off -999 ÷...
  • Page 51 ITC 450/470 User manual “H r4” parameter in “HOLd” menu: 0 ÷ 1 0 - “rEAL” mode ; 1 - “HOLd” mode “HOUt” parameter in “HOLd” menu: 0 ÷ 1 0 - “rEAL” mode ; 1 - “HOLd” mode The value of „X” coordinate of point no. 1 of the user defined -999 ÷...

  • Page 52: Transmission Errors Description

    Data byte count in answer frame DATA H,L Data byte (Hi and Lo byte) CRC L,H CRC error check (Hi and Lo byte) 1. Read of the displayed value (measurement), ITC 450 device address = 01h: ADDR FUNC REG H,L COUNT H,L CRC L,H www.
  • Page 53 ITC 450/470 User manual a) The answer (we assume that the measure result is not out of range): ADDR FUNC BYTE C DATA H,L CRC L,H DATA H, L - Displayed value = 255, no decimal point. Decimal point position can be read from reg. 03h.
  • Page 54 ITC 450/470 User manual 4. Change of baud rate of all devices connected to the net (BROADCAST message). ADDR FUNC REG H,L COUNT H,L CRC L,H DATA H - 0 DATA L - 4, new baud rate 19200 baud Device do not reply to BROADCAST-type messages.

  • Page 55: Default And User's Settings List

    ITC 450/470 User manual 12. DEFAULT AND USER'S SETTINGS LIST Default User's Desc. Parameter Description Value Value Page Parameters of relay R1 operation (“rEL1” menu) SEtP Relay R1 threshold 20.0 SEt2 Relay R1 second threshold 40.0 HYSt Hysteresis of relay R1...
  • Page 56 ITC 450/470 User manual Default User's Desc. Parameter Description Value Value Page CHAr Conversion characteristic mode Decimal point position Lo C Minimum displayed value (for nominal range) 000.0 Hi C Maximum displayed value (for nominal range) 100.0 Lo r Extension of the bottom of the nominal input range 5.0 (%)
  • Page 57 ITC 450/470 User manual Default User's Desc. Parameter Description Value Value Page Lo r Extension of the bottom of the nominal output range 5.0 (%) Hi r Extension of the top of the nominal output range 5.0 (%) Voltage output value on critical exception 11.0 (V)
  • Page 58 ITC 450/470 User manual Default User's Desc. Parameter Description Value Value Page RS-485 interface configuration (menu “rS”) Addr Device address bAud Baud rate mbAc Permission to changes of configuration registers mbtO Maximum delay between received messages rESP Additional delay of answer transmission...
  • Page 59 USER MANUAL METER ITC 450/470 SERIES Specification may be modified without notice in advance. For More Information Visit www. levelprosales.com...

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