Level Pro ITC 450 Operating Manual

Download

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

Page 2

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. DETECTION OF THE PEAK VALUES  6.3. CONTROL OF THE RELAY OUTPUTS   6.3.1. One threshold mode   6.3.2. Two thresholds mode

7. DEVICE PROGRAMMING  7.1. PROGRAMMING MENU  7.2. PARAMETERS EDITION   7.2.1. Numeric parameters (digit change mode)   7.2.2. Numeric parameters (slide change mode)   7.2.3. Switch parameters (“LIST” type)  7.3. MENU DESCRIPTION   7.3.1. “rEL1” menu   7.3.2. “bEEP” menu   7.3.3. “inPt” menu (common parameters)   7.3.4. “inPt” menu (parameters of temperature inputs)   7.3.5. “inPt” menu (parameters of current and voltage inputs)   7.3.6. ”OutP” menu   7.3.7. ”bri” parameter   7.3.8. ”HOLd” menu   7.3.9. ”SECu” menu   7.3.10. ”rS” menu   7.3.11. ”Edit” parameter   7.3.12. ”dEFS” parameter   7.3.13. ”SErv” menu  7.4. MENU STRUCTURE

8. THE ALARM LED

9. OVER-CURRENT PROTECTION

10. DISPLAYED VALUES CALCULATION  10.1. ADDITIONAL CALCULATIONS (USED CONVERSION CHARACTERISTIC)   10.1.1. Linear characteristic   10.1.2. Square characteristic   10.1.3. Square root characteristic   10.1.4. User defined characteristic  10.2. EXAMPLES OF CALCULATIONS

11. THE MODBUS PROTOCOL HANDLING  11.1. LIST OF REGISTERS  11.2. TRANSMISSION ERRORS DESCRIPTION  11.3. EXAMPLES OF QUERY/ANSWER FRAMES

12. DEFAULT AND USER'S SETTINGS LIST

4 4 7 7 8 10 18 18 19 19 21 21 23 24 25 25 26 26 26 27 27 28 30 30 31 31 33 35 35 36 36 37 37 37 38 40 40 40 40 41 41 42 42 43 46 46 51 51 54

www. levelprosales.com

Page 3

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.

IF THE DEVICE IS NOT USED ACCORDING TO THE MANUAL THE USER IS

RESPONSIBLE FOR POSSIBLE DAMAGES.

This symbol denotes especially important characteristics of the unit. Read any information regarding this symbol carefully.

1. BASIC REQUIREMENTS AND USER SAFETY

The manufacturer is not responsible for any damages caused by inappropriate installation, not maintaining the proper environmental conditions and using the unit contrary to its assignment. 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. If the device is equipped with PE connector, it should be connected to PE wire. Otherwise PE wire should be connected to GND connector.

unit must be properly set-up, according to the application. Incorrect configuration can cause defective operation, which

The can lead to unit damage or an accident. If in the case of a unit malfunction there is a risk of a serious threat to the safety of people or property additional, independent systems and solutions to prevent such a threat must be used. The unit uses dangerous voltage that can cause a lethal accident. The unit must be switched off and disconnected from the power supply prior to starting installation of troubleshooting (in the case of malfunction). Neighbouring and connected equipment must meet the appropriate standards and regulations concerning safety and be equipped with adequate overvoltage and interference filters. Do not attempt to disassemble, repair or modify the unit yourself. The unit has no user serviceable parts. Defective units must be disconnected and submitted for repairs at an authorized service centre.

In order to minimize fire or electric shock hazard, the unit must be protected against atmospheric precipitation and excessive humidity. Do not use the unit in areas threatened with excessive shocks, vibrations, dust, humidity, corrosive gasses and oils. Do not use the unit in areas where there is risk of explosions. Do not use the unit in areas with significant temperature variations, exposure to condensation or ice. Do not use the unit in areas exposed to direct sunlight. Make sure that the ambient temperature (e.g. inside the control box) does not exceed the recommended values. In such cases forced cooling of the unit must be considered (e.g. by using a ventilator).

The unit is designed for operation in an industrial environment and must not be used in a household environment or similar.

www. levelprosales.com

Page 4

ITC 450/470 User manual

2.GENERAL CHARACTERISTICS

The ITC 450/470 meter is equipped with one current input (0-20mA), two voltage inputs (0-10V and 0-150 mV), one RTD input (Pt 100/500/1000) and one TC input (thermocouple: K, S, J, T, N, R, B, E). Temperature of cold ends is compensated automatically. RTD and TC inputs are fully linearised. It is allowed to use only one input at the same time. 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. Device ITC 450/470 is equipped with RS-485 / Modbus RTU communication interface and sensor supply output. The meter can be ordered in two power supply versions.

ITC 450/470 can be used for controlling and regulation of processes need proportional and threshold control like: temperature processes (heating or cooling), valves controlling or other.

3.TECHNICAL DATA

Power supply voltage (depending on version)

External fuse (required)

Power consumption

Current input (20 mA)

Current measurement accuracy

Current input resistance

Accepted prolonged

input overload

Voltage input (10V range)

Voltage measurement accuracy

Voltage input resistance

Accepted prolonged

input overload

85...230...260V AC/DC; 50 ÷ 60 Hz (separated) or 19...24...50V DC and 16...24...35V AC (separated)

T - type, max. 2 A max. 6.5 VA @ 85 ÷ 260V AC/DC

max. 6.5 VA @ 16V ÷ 35V AC max. 6.5 W @ 19V ÷ 50V DC

0÷20 mA, 4÷20 mA overload protected, input current is limited to 50 mA (typically) ± 0.1% @ 25°C; ± one digit (for 0÷20 mA range)

< 65 Ù (typical 30 Ù)

20%

0÷5 V, 1÷5 V, 0÷10 V, 2÷10 V ± 0.1% @ 25°C; ± one digit (for 0÷10 V range)

> 100 kW (while maintaining correct polarization)

20%

Voltage input (150mV range)

Voltage measurement accuracy

Voltage input resistance

Accepted prolonged

input overload

0÷60 mV, 0÷75 mV, 0÷100 mV, 0÷150 mV ± 0.1% @ 25°C; ± one digit (for 0÷150 mV range)

> 1,5 MÙ

20%

www. levelprosales.com

Page 5

ITC 450/470 User manual

RTD input (resistive)

Measurement range

Measurement accuracy

Measurement wires resistance

Thermocouple input

Thermocouple input range

Measurement accuracy

Accuracy of cold ends

temperature compensation

Sensor power supply output

Pt 100, Pt 500,Pt 1000

-100°C ÷ +600°C ± 0,1% @ 25°C; ± one digit max. 20 (every wire)

K, S, J, T, N, R, B, E K: -200°C ÷ +1370¢ªC

S: -50°C ÷ +1768¢ªC J: -210°C ÷ +1200¢ªC T: -200°C ÷ +400¢ªC

-200°C ÷ +1300¢ªC

N R:

-50°C ÷ +1768¢ªC +250°C ÷ +1820¢ªC

B: E: -200°C ÷ +1000¢ªC

K, J, E : ± 0.1% @ 25°C; ± one digit N : ± 0.2% @ 25°C; ± one digit S, T, R, B :± 0.5% @ 25°C; ± one digit

± 1°C

24V +5%, -10% / max. 100 mA, stabilized

Relay output

OC-type output

Active current output

(optional, for two relays or two

OC-type output version only)

Load resistance max.

Passive isolated current output

(optional, for two relays or two

OC-type output version only)

Supply voltage

Load resistance max.

Active voltage output

(optional, for two relays or two

OC-type output version only)

Load resistance min.

0, 2 or 4 NO, 5A/250V AC (cos Ø = 1)

0, 2 or 4; 30mA / 30VDC / 100mW

range max. 0 ÷ 24 mA

700

range max. 2.8 ÷ 24 mA

Us = 9.5 ÷ 36V (Us – 9.5V) / 24mA [k ]

range max. 0 ÷ 11V

2000

www. levelprosales.com

Page 6

ITC 450/470 User manual

Temperature stability

Communication interface

Baud rate

ITC 450 Display (depending on version)

ITC 470 Display (depending on version)

Data memory

Front panel protection

Terminals protection

Housing type

Housing material

50 ppm / °C

-999 ÷ 9999, plus decimal point

RS-485, 8N1 and 8N2, Modbus RTU, not separated

1200 bit/s ÷ 115200 bit/s

LED, 4 digit, 20mm height, red or LED, 4 digit, 20mm height, green

LED, 6 digit, 13mm height, red or

LED, 6 digit, 13mm height, green

non-volatile memory, EEPROM type IP 65

optional version with panel cut-out sealing available IP 20

panel

NORYL - GFN2S E1

Housing dimensions

Mounting hole

Assembly depth

Panel thickness

Operating temperature (depending on version)

Storage temperature (depending on version)

Humidity

Altitude

Screws tightening max. torque

Max. connection leads cross section

96 x 48 x 100 mm

90.5 x 43 mm

102 mm

max. 5 mm

-40°C to +60°C

-40°C to +70°C

5 to 90% no condensation up to 2000 meters above sea level 0,5 Nm

2,5 mm

www. levelprosales.com

Page 7

ITC 450/470 User manual

Safety requirements

according to: PN-EN 61010-1 installation category: II pollution degree voltage in relation to ground: 300V AC insulation resistance insulation stre input/output terminal: 1min. @ 2300V insulation stre 1min. @ 1350V

: 2

: >20M

ngth between power supply ngth between re

lays terminal:

and

EMC

This is a class A unit. In a residential or a similar area it can cause radio frequency interference. In such cases the user can be requested to use appropriate preventive measures.

according to: PN-EN 61326-1

4.DEVICE INSTALLATION

The unit has been designed and manufactured in a way assuring a high level of user safety and resistance to interference occurring in a typical industrial environment. In order to take full advantage of these characteristics installation of the unit must be conducted correctly and according to the local regulations.

Read the basic safety requirements on page 3 prior to starting the installation. Ensure that the power supply network voltage corresponds to the nominal voltage stated on the unit’s identification label. The load must correspond to the requirements listed in the technical data. All installation works must be conducted with a disconnected power supply. Protecting the power supply connections against unauthorized persons must be taken into consideration.

4.1. UNPACKING

After removing the unit from the protective packaging, check for transportation damage. Any transportation damage must be immediately reported to the carrier. Also, write down the unit serial number located on the housing and report the damage to the manufacturer.

Attached with the unit please find:

User’s manual, Warranty, Assembly brackets - 2 pi

www. levelprosales.com

eces.

Page 8

ITC 450/470 User manual

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. Disconnect the power supply prior to starting assembly. Chec

In order to install the unit, a 90.5 x 43 mm mounting hole (Figure 4.1, 4.2) must be prepared. The thickness of the material of which the panel is made must not exceed 5mm. When preparing the mounting hole take the grooves for catches located on both sides of the housing into consideration (Figure 4.1, 4.2). Place the unit in the mounting hole inserting it from the front side of the panel, and then fix it using the brackets (Figure 4.3). The minimum distances between the centre points of multiple units - due to the thermal and mechanical conditions of operation - are 115 mm x 67mm (Figure 4.4).

k the connections are wired correctly prior to switching the unit on.

90,5 mm

13 mm

8 mm

13 mm

1 mm

8 mm

1 mm

43 mm

max. 5 mm

Figure 4.1. Recommended mounting hole dimensions

92 mm

43 mm

Figure 4.2. Allowable mounting hole dimensions

www. levelprosales.com

max. 5 mm

Page 9

ITC 450/470 User manual

5 mm

92 mm

8,5 mm

12 mm

16 mm

10 mm

Figure 4.3. Installing of brackets, and dimensions of connectors

115 mm

67 mm

Figure 4.4. Minimum distances when assembly of a number of units

www. levelprosales.com

Page 10

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.

The unit is not equipped with an internal fuse or power supply circuit breaker. Because of this an external time-delay cut-out fuse with a small nominal current value must be used (recommended bipolar, max. 2A) and a power supply circuitbreaker located near the unit. In the case of using a monopolar fuse it must be mounted on the phase cable (L).

The power supply network cable diameter must be selected in such a way that in the case of a short circuit of the cable from the side of the unit the cable shall be protected against destruction with an electrical installation fuse.

Wiring must meet appropriate standards and local regulations and laws. In order to secure against accidental short circuit the connection cables must be terminated

with appropriate insulated cable tips. Tighten the clamping screws. The recommended tightening torque is 0.5 Nm. Loose screws can

cause fire or defective operation. Over tightening can lead to damaging the connections inside the units and breaking the thread.

the case of the unit being fitted with separable clamps they should be inserted into

appropriate connectors in the unit, even if they are not used for any connections. Unused terminals (marked as n.c.) must not be used for connecting any connecting cables (e.g.

as bridges), because this can cause damage to the equipment or electric shock. If the unit is equipped with housing, covers and sealing to, protecting against water intrusion,

pay special attention to their correct tightening or clamping. In the case of any doubt consider using additional preventive measures (covers, roofing, seals, etc.). Carelessly executed assembly can increase the risk of electric shock.

After

the installation is completed do not touch the unit’s connections when it is switched on,

because it carries the risk of electrical shock.

Due to possible significant interference in industrial installations appropriate measures assuring correct operation of the unit must be applied. To avoid the unit of improper indications keep recommendations listed below.

www. levelprosales.com

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. RCtype.

Use of screened signal cables is recommended. Signal cable screens should be connected to the earthing only at one of the ends of the screened cable.

In the case of magnetically induced interference the use of twisted pair of signal cables is recommended. Twisted pair (best if shielded) must be used with RS-485 serial transmission connections.

In the case of measurement or control signals are longer than 30m or go outside of the building then additional safety circuits are required.

In the case of interference from the power supply side the use of appropriate interference filters is recommended. Bear in mind that the connection between the filter and the unit should be as short as possible and the metal housing of the filter must be connected to the earth with the largest possible surface. The cables connected to the filter output must not be run with cables with interference (e.g. circuits controlling relays or contactors).

Connections of power supply voltage and measurement signals are executed using the screw connections on the back of the unit’s housing.

6-7 mm

max. 2 mm

Figure 4.5. Method of cable insulation replacing and cable terminals

www. levelprosales.com

Page 12

ITC 450/470 User manual

All connections must be made while power supply is disconnected !

Power supply

(depending on version)

1 2 5 6 7 8 9

10 1 1 12 13 14 15

(optional)R2(optional)

(optional)

3 4

(optional)

+24V +5%, -10%

Imax = 100mA

31 32 33 34 35

31 34

RTD

Figure 4.6. Terminals description (relay outputs)

Power supply

(depending on version)

1 2 5 6 7 8 9

(optional)

OC4

+ -

3 4

10 1 1 12 13 14 15

- + - + - + OC1

(optional) (optional) (optional)

OC1 ÷ OC4: Umax = 30V DC, Imax = 30mA, Pmax = 100mW

OC2

OC3

+24V +5%, -10%

Imax = 100mA

31 32 33 34 35

31 34

RTD

DATA-

;

RTD

RS - 485

GND DATA+

DATA

RTD

RS - 485

DATA+GND

;

33 34

Figure 4.7. Terminals description (OC-type outputs)

Power supply

(depending on version)

ACTIVE

current output

(optional)

+24V +5%, -10%

Imax = 100mA

RS - 485

GND DATA+

DATA

- +

1 2 5 6 7 8 9

10 1 1 12 13 14 15

(optional) (optional)

Figure 4.8. Terminals description (relay and active current outputs)

3 4

ALMLALML

31 32

31 32 33 34 35

RTD

33 34

www. levelprosales.com

Page 13

ITC 450/470 User manual

Power supply

(depending on version)

ACTIVE

current output

(optional)

+24V +5%, -10%

Imax = 100mA

GND DATA+

DATA

RS- 485

- +

1 2 5 6 7 8 9

10 1 1 12 13 14 15

OC1

(opcja)

OC1 ÷ OC2: Umax = 30V DC, Imax = 30mA, Pmax = 100mW

Figure 4.9. Terminals description (OC-type and active current outputs)

OC2

(opcja)

3 4

n.c. n.c.

31 34

RTD

31 32 33 34 35

RTD

33 34

www. levelprosales.com

Page 14

ITC 450/470 User manual

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. Measured value can be corrected (constant correction) using „toFS” parameter from menu „inPt”. Due to low precision 2-wire connection is not recommended.

When 4-wires or 2-wires connection is used, the resistance of particular wires (Ra ÷ Rd) CAN BE DIFFERENT. When 3-wires connection is used, the resistance of particular wires (Ra ÷ Rd) MUST BE IDENTICAL to enable proper compensation of it's resistance. The resistance of particular wire should not be greater than 20 .

a) b) c)

31 32 33 34

Rb Rc : Rd

RTD

Ra, Rb, Rc, Rd can be different

a) 4-wires circuit; b) 3-wires circuit; c) 2-wires circuit

31 32 33 34

n.c.

Ra Rc : Rd

RTD

Ra = Rc = Rd

Figure 4.17. Connection of RTD sensors:

31 32 33 34

n.c. n.c.

Ra Rc

RTD

Ra, Rc can be different

www. levelprosales.com

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. If wire break is detected "S.Err" (sensor error) message is displayed.

Contacts of relay outputs are not equipped with spark suppressors. While use the relay outputs for switching of inductive loads (coils, contactors, power relays, electromagnets, motors etc.) it is required to use additional suppression circuit (typically capacitor 47nF/ min. 250VAC in series with 100R/5W resistor), connected in parallel to relay terminals or (better) directly on the load. In consequence of using the suppression circuit, the level of generated electromagnetic disturbances is lower, and the life of relay contacts rises.

www. levelprosales.com

Page 17

ITC 450/470 User manual

www. levelprosales.com

Page 18

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. In cases where the unit gets dirty do not clean with solvents. For cleaning use warm water with small amount of detergent or in the case of more significant contamination ethyl or isopropyl alcohol.

Using any other agents can cause permanent damage to the housing.

Product marked with this symbol should not be placed in municipal waste. Please check local regulations for disposal and electronic products.

5.FRONT PANEL DESCRIPTION

alarm LED indicator (AL)

Thresholds exceeding LED indicators (R)

AL R1 R2 R3 R4

ESC

ENTER

display

programming pushbuttons

www. levelprosales.com

Page 19

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” and “Hi r” parameters, paragraph ”inPt” menu). The warning can be effect of measurement circuit malfunction. In that case “-Lo-” means shortcut and “-Hi-” means break of measurement circuit. If sensor failure will be detected (e.g. broken wires), then ”S.Err” warning will be displayed

”Hi r” parameter

nominal measurement range

0 mV 150 mV

permissible measurement range

Figure 6.2. Definitions of measurement ranges in mode 0 ÷ 150mV

-100°C +600°C

permissible measurement range

”-Lo-” message displayed

Figure 6.3. Definitions of measurement ranges in mode Pt100

”-Hi-” message displayed

www. levelprosales.com

Page 20

ITC 450/470 User manual

In the measurement mode user can check main thresholds values. After pressing [^] or [v] button, name of the threshold (e.g. ”rEL1”) and his value will be displayed on the display in alternating mode. If [^] or [v] will be pressed in 5 sec again, the next threshold will be displayed, else the device comes back to the measurement mode. If a free access is enabled (see description of ”SECu” menu), user can change the value of particular threshold pressing button [ENTER] (see: PARAMETERS EDITION).

All accessible parameters can be changed by entering the menu (see: DEVICE PROGRAMMING). Use the local keyboard or the remote controller to do it. (Note: all parameters can be remote changed via RS-485 interface).

Configuration of the device (via menu or RS-485 interface) does not stop the measurements.

www. levelprosales.com

6.2. DETECTION OF THE PEAK VALUES

The ITC 450 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” menu). The detection of the peak can be done if the measured signal raises and drops of value at least equal to parameter ”PEA”. Detected peaks are displayed during the time defined by parameter ”timE”. If a new peak will be detected while one is displayed, this new peak will be displayed and display time counter will be cleared (Figure 6.4). If no peaks are detected while time ”timE” elapses, device starts to show the current value of input signal again. If „HdiS”=”HOLD” then setting parameter "timE"=0.0 causes holding peak value until [ESC] button is pressed. If „HdiS”=”rEAL” then value "timE"=0.0 means no holding. Displaying peak value is signalized by flashing most right decimal point. The relays/LEDs and analogue outputs can be controlled depend on the current value of input signal or the peak value (see ”HOLd” menu).

measure

"timE"

"PEA"

real measurement result display value

Figure 6.3. Process of peaks detection

"timE"

"PEA"

time

www. levelprosales.com

Page 21

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. In such case LEDs indicates exceeding of particular thresholds.

Modes of the control can be changed depend on the values of parameters “SEtP”, “SEt2”, “HYSt”, “modE”, “t on”, “toFF”, “unit” and “AL”. Depend on “modE” parameter, relays can be not used or controlled over one or two thresholds values. If

one threshold is used (Figure 6.5) the relay can be turned on (“modE” = ”on”) or off (“modE” = ”oFF”) when the input signal value is contained in zone A. If two thresholds are used (Figure 6.6) the relay will be turned on when value of input signal is contained in zone A (“modE” = ”in”) or zone B (“modE” = ”out”) and turned off if the signal is contained in the second one.

state of relay/LED

Figure 6.5. One threshold control of the relay/LED outputs

state of relay/LED

zone B

”SEtP” parameter

zone B

”HYSt” parameter

”SEtP” or ”SEt2” parameter

zone A

measure

zone B

measure

”HYSt” parameter

Figure 6.6. Two threshold control of the relay/LED outputs

The relay outputs and LEDs (named R) can be controlled depend on both - the current value and the peak value (when peak detection is active) of the input signal.

www. levelprosales.com

Page 22

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.

Description:

relay state

(modE = on

t on = 0

t oFF = 0)

relay state

(modE = oFF

t on = 0

t oFF = 0)

relay state

(modE = on

t on = 0

t oFF = 0)

relay state

(modE = oFF

t on = 0

t oFF = 0)

OFF

“t on”

“t oFF”

“t on”

OFF

“SEt P” parameter

(expected signal value)

“HYSt” parameter

(allowed signal deviation)

A, B, C, D B

,DON ,D

OFF

tA , tB , tC , t

- points where measured signal exceeds border values (expected value ± allowed deviation)

- relays state changes moments: (for “t on” > 0, “t oFF” > 0)

OFF

- time periods while input signal is in zone A or zone B

Figure 6.7. Principle of LED/relay output operation for one threshold mode

Parameter “SEt P” sets a threshold of the relay, and parameter “HYSt” sets a hysteresis of the relay (Figure

6.7 a). The relay can change its state only when input value exceeds (over or under) border value and tA,tB ,tC ,tD times (Figure 6.7).) are bigger than the time defined by parameters “t on”, “t oFF” and “unit”. Border values means values equal threshold+hysteresis and threshold-hysteresis respectively.

If “t on” and “t oFF” parameters are set to “0”, then the relay state will be changed as soon as input value

xceeds any of the border values (see points A and C, Figure 6.7 a, b, c).

e If values of “t on” or/and “t oFF” are positive, then relay state will be turned on if the input value exceeds the

border

values and stay bigger (or lower) during at least “t on” (see points B

ON, DON, Figure 6.7 a, d, e).

Similarly, the relay will be turned off if time “t oFF” elapse since the input signal value exceeds any of the border values (see points BOFF, DOFF, Figure 6.7 a, d, e).

www. levelprosales.com

Page 23

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 “t oFF”, the relay will not change his state (see points A and C, Figure 6.7 a, d, e). The state of relay output while the input value exceeds the border values (points A, B, C, D) is described by parameter “modE”. The relay can be turned on (“modE” = ”on”), or turned off (“modE” = ”oFF”) when input signal value is contained in zone A (Figure 6.7 a). The parameter “ALArmS” allow user to set the relay output behaviour in critical situations (e.g. Input values exceeds permissible input frequency). User can select that the relays will be turned on, turned off,or not changed in critical situations.

All parameters connected with relay outputs are described in paragraph ”rELAy1” menu.

6.3.2. Two thresholds mode

relay state

(modE = in

t on = 0

t oFF = 0)

relay state

(modE = out

t on = 0

t oFF = 0)

relay state

(modE = in

t on = 0

t oFF = 0)

relay state

(modE = out

t on = 0

t oFF = 0)

“t on” parameter

“t oFF” parameter

OFF

“t oFF” parameter

“t on” parameter

“t oFF” parameter

“HYSt” parameter

OFF

“SEt P” or “SEt P2”

parameter

“HYSt” parameter

Description:

A, B, C, D B

OFF

ON , COFF , EON

tA , tB , tC , tD, t

- points where measured signal exceeds border values (expected value ± allowed deviation)

- relays state changes moments: (for “t on” > 0, “t oFF” > 0)

, E

OFF

- time periods while input signal is in zone A or zone B

Figure 6.8. Principle of LED/relay output operation for two thresholds mode

www. levelprosales.com

Page 24

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” are connected with both “SEt P” and “SEt P2” thresholds. While the controlling process, the relay output changes his state depends of both “SEt P” and “SEt P2” thresholds in similar way as it was described in one threshold mode.

If two threshold mode is used, “modE” parameter defines state of the relay output when the input value occurs i input value is contained in zone A (“modE” = ”in”) or zone B (“modE” = ”out”) and turned off if it is contained in the second one (Figure 6.8).

n a particular zone defined by border values of both thresholds. The relay can be turned on if the

The sequence of thresholds “SEt P” and “SEt P2” can be set in any order, due to the control of relay outputs is done depend on difference between thresholds values (zone A) and outside of threshold values (zone B).

7.DEVICE PROGRAMMING

The device menu allow user to set all parameters connected to operation of measurement input, control modes, critical situations behaviour, communication via RS-485 and access settings. The meaning of the particular parameters is described in paragraph MENU DESCRIPTION. Some b If [^] or [v] will be pressed in 5 sec again, the next threshold will be displayed, else the device comes back to the measurement mode. If a free access is enabled (see description of ”SECu” menu), user can change the value of particular threshold pressing button [ENTER] (see: PARAMETERS EDITION).

of the parameters can be accessed without menu entering (quick view mode). After pressing [^] or [v]

utton, name of the threshold (e.g.”rEL1”) and his value will be displayed on the display in alternating mode.

If particular parameter has been changed and confirmed in quick view mode, its new value is displayed in alternating mode with parameter name by few seconds. Confirmed changes may be checked or user can switch viewed parameter pressing [^] or [v] button.

7.1. PROGRAMMING MENU

To enter main menu (being in the measurement mode) operator must to press and hold at least 2 sec. [ESC/MENU] button. If the user password is defined (see parameter “Scod“, menu ”SECU”), operator have to enter correct one before proceeding to menu options . Entering of the passwords is similar to the edition of numeric parameters (see: PARAMETERS EDITION ), however presently editing digit is showed only on the display, other digits are replaced by “-” sign. After entering of last digit of the password first menu position will be displayed (if the password is correct) or warning ”Err” in other case.

Pay attention when device parameters are being changed. If it is possible, turn off controlled installation (machine).

www. levelprosales.com

Page 25

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

ENTER

parameter (or next level sub-menu) is displayed,

• if the name of some par present value of the parameter is displayed,

amet

er is displayed - enter the edition of this parameter;

ESC

[ESC/MENU] button allow user to exit present menu level and goes to upper level menu (or measurement mode).

After about 1 min. of inactivity the, device will exit the menu mode and return to the measurement mode.

7.2. PARAMETERS EDITION

To start edition of any parameter user should select name of desired one using [^] [v] buttons and then press [ENTER].

7.2.1. Numeric parameters (digit change mode)

Numerical parameters are displayed as decimal numbers. The mode of its new value entering depends on chosen edit method ( see parameter „Edit”). In mode “by digit” („Edit”=”dig”) pressing one of the keys [^] or [v] causes change of current position (flashing digit) or the sign (+/-). Short pressing of the [ENTER] button causes change of the position (digit).

Press [ENTER] at least 2 seconds to accept the changes, after that question ”SEt?” is displayed, and user must to confirm (or cancel) the changes. To conform changes (and story it in EEPROM) press [ENTER] button shortly after ”SEt?” is displayed. To cancel the changes press [ESC] button shortly after ”SEt?” is displayed. After that device returns to the menu.

www. levelprosales.com

Page 26

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.

decrease edited value press (or press and hold ) [v] button only. The decreasing became quickest as

long

as button [v] is pressed. To slow down the decreasing, button [^] can be used. If [^] is pressed shortly (and button [v] is still pressed), decreasing slow down for a moment only, if [^] is pressed and held while button [v] is still pressed the decreasing slow down and will be kept on lower speed.

Press [ENTER] at least 2 seconds to accept the changes, after that question ”Set?” is displayed, and user must to confirm (or cancel) the changes. To conform changes (and story it in EEPROM) press [ENTER] button shortly after ”SEt?” is displayed. To cancel the changes press [ESC] button shortly after ”SEt?” is displayed. After that device returns to the menu.

7.2.3. Switch parameters (“LIST” type)

Switch parameters can be described as a sets of values (a lists) out of which only one of the options available on the list can be selected for the given parameter. Options of switching parameter are selected using [^], [v] keys.

Short pressing of [ENTER] causes in displaying of the acknowledge question (”SEt?”). If key [ENTER] is pressed again, the changes are accepted, stored in EEPROM end the edition process finished. Pressing the key [ESC] after ”SEt?” causes in cancelling of made changes and returning to menu.

Functions of buttons when editing numeric and switching parameters:

While editing numeric parameter:

• Change of current (flashing) digit lide change of value (acceleration, deceleration, direction change)

• S

hile editing switch parameter - selection of switch parameter.

If numerical parameter is being edited, a short quick pressing of [ENTER] button will change edited position. A long press of [ENTER] button (at lest 2 sec.) the display to

ENTER

request

value is correct. If switch parameter is being edited, a short press of [ENTER] button causes the display a ”SEt?” confirmation. When [ENTER] button is pressed again (while ”SEt?” is displayed) the new value of the parameter is stored in EEPROM memory.

”SEt?” confirm, which allow user to make sure the change of the parameter

ESC

Pressing this button the operator can cancel the changes done up to now (if they were not approved by [ENTER] button after the ”SEt?” request) and will return to the main menu. menu.

www. levelprosales.com

Page 27

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

“- - - -”

Due to problem with direct displaying of “m” and “K” letters, they are exchanged with special signs “ “ for “m” and “ “ for K respectively. However, the user manual letters "m" and "K" are used to make it more readable (example: “modE”, “tc K”).

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 measurement mode.

7.3.1. “rEL1” menu

This menu allows to configure the operation mode of relays and LEDs marked "R” (e.g. "R1”).

If there are few relay outputs available, then every output has its own configuration menu (e.g. menu "rEL2” for

relay (LED) "R2”). Principle of the relays operation is described in paragraph CONTROL OF THE RELAY OUTPUTS.

The relay outputs and LEDs (named R) can be controlled depend on both – the current value and

• the peak value (when peak detection is active) of the input signal.

If device is not equipped with one or more relay outputs, menus refer to this relays are available,

• but apply t

"SEtP"

“HYSt”

o LED indicators only. In such case LEDs indicates exceeding of particular thresholds.

first threshold of the relay (range -999 ÷ 9999). Negative values can be input by selecting a “-” sign on first digit (to change value use [^] and [v] buttons).

Threshold is the median value of relay hysteresis.

first threshold of the relay (range -999 ÷ 9999). Negative values can be input by selecting a “-” sign on first digit (to change value use [^] and [v] buttons).

Threshold is the median value of relay hysteresis.

- hysteresis of relay (range 0 ÷ 999). Full hysteresis of the relay is equal to 2x “HYSt” parameter. The relay state can change when an input signal is out of thresholdhysteresis to threshold+hysteresis zone.

Presented parameters should be set to ensure that ”SEtP” + ”HYSt”, ”SEt2” + ”HYSt”, ”SEtP” - ”HYSt” or ”SEt2” - ”HYSt” does not exceed the measure range. Additionally, in two threshold mode (“modE”= „in” or „out”), the hysteresis for both thresholds must not cover each other (in other case relay can't change his state

www. levelprosales.com

Page 28

ITC 450/470 User manual

"modE" - relay operation mode:

"noAC"

"on"

"oFF"

"in"

"out"

the relay is not active (permanently turned off)

one threshold mode, the relay is turned ON when input signal exceeds the SEtP + 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 value, and is turned on when the input signal became lower than SEtP – HYSt,

two threshold mode, the relay is turned ON when the input signal is greate than “lower threshold + HYSt” and below than “bigger threshold HYSt”, and turned off when the input signal is contained within the second zone. The hanger threshold equals the hanger one of “SEtP” and “SEt2” thresholds, the smalle threshold” means the smaller one of “SEtP” and “SEt2” thresholds.

two threshold mode, relay is turned ON when the input value is greater than “bigger threshold + HYSt” and lower than “smaller threshold – HYSt”, and turns on when the input signal is contained in the second zone. The hanger threshold means hanger one of “SEtP” and “SEt2” thresholds, the Smaller threshold” means Smaller one of “SEtP” and “SEt2” thresholds.

"modb"

• LEDs lights up when relays are closed, independently of relays' mode.

•When the power supply fails, the unit does not store relays state selected by RS- 485 interface.

"t on"

"toFF"

the relay is controlled via RS-485 interface, independently on the input signal.

turn on the delay time, the relay is turned on with delay equal “t on” if the input value exceeds the appropriate border value (defined with threshold and hysteresis), “t on” time. “t on” range 0 ÷ 99.9, defined with 0.1 sec. resolution. Unit of this parameter is set by “unit” parameter.

turn off delay time, the relay is turned off with delay equal “toFF” if the input value exceeds appropriate border value (defined with threshold and hysteresis), “toFF” time. “toFF” range 0 ÷ 99.9, defined with 0.1 sec. resolution. Unit of this parameter is set by “unit” parameter.

If time when the input signal exceeds some border value and is shorter than the “t on” or “toFF” time, the relay does not change is state (see paragraph: CONTROL OF THE RELAY OUTPUTS).

www. levelprosales.com

Page 29

ITC 450/470 User manual

unit of time for “t on” i “toFF” parameters. The unit be set to one of two values:

"unit"

"AL"

"min" "SEC"

this parameter defines the relay reaction when some critical situations occurs:

"noCH"

"on"

"oFF"

If parameter “modE” is set to “on” , “oFF”, “in” or “Out” the “critical situation” means that the allowable measurement range is exceeded. If parameter "modE" is set to "modb", the "critical situation" means the communication delay (when no data is received) is longer than "mbtO" parameter (see description: "rS" menu).

If option “noCH” is selected for “AL” parameter, behaviour of the relay may depend on “FiLt” parameter in some cases. If “FiLt” is set to big value and the input signal drops, result value of the measure will change slow, causes of turning on or off relay due to thresholds values. The critical situation is slowly detected, so it is impossible to predict the relay state in that situations. If parameter „AL” = „on”, the relay will be turned even if his parameter “modE” = ”noAC”.

minutes seconds

relay do not change state, relay will be turned on, relay will be turned off.

7.3.2. “bEEP” menu

This menu contains options connected with acoustic signal :

"AL”

"r1” "r2"

"r3" "r4"

if this parameter is set to “on”, any critical situation causes by acoustic signal if this parameter is set to “on”, activation of relay R1 causes by acoustic signal

if this parameter is set to “on”, activation of relay R2 causes by acoustic signal if this parameter is set to “on”, activation of relay R3 causes by acoustic signal

if this parameter is set to “on”, activation of relay R4 causes by acoustic signal

Acoustic signal (turned on by e.g. relay ) can be turned off by pressing of any button

www. levelprosales.com

Page 30

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,

“tYPE"

”4-20” ”0-5”  - ”1-5”  - ”0-10” -

”2-10” ”60”  ”75”  ”100” ”150” ”Pt 1” ”Pt 5” ”Pt10” ”tc k”  ”tc S”  ”tc J”  ”tc t”  ”tc n” ”tc r”  ”tc b” ”tc E” -

- current input - range 4..20 mA, voltage input - range 0..5 V, voltage input - range 1..5 V, voltage input - range 0..10 V, voltage input - range 2..10 V, voltage input - range 0..60 mV, voltage input - range 0..75 mV, voltage input - range 0..100 mV, voltage input - range 0..150 mV, Pt 100 input, Pt 500 input, Pt 1000 input, thermocouple input, type K, thermocouple input, type S, thermocouple input, type J, thermocouple input, type T, thermocouple input, type N, thermocouple input, type R, thermocouple input, type B, thermocouple input, type E.

For current and voltage inputs displayed values are defined by parameters “Lo C”,”Hi C” (or by user defined characteristic points) and parameter ”Pnt”.

”FiLt”

- option allows to change the filtration time constant. Expressed in seconds. Acceptable values range from 0 (no filtration ) to 255.

7.3.4. “inPt” menu (parameters of temperature inputs)

connection method of RTD input. This parameter can be set to values:

“tYPE"

“toFS”

The offsetting of a scale is realised independently of cold ends automatic compensation.

"4 in" - 4-wire method, ”3 in” - 3-wire method, ”2 in” - 2-wire method.

- offset expressed in °C, range ± 9.9°C (for RTD input) or ± 99°C (for TC input). This parameter allows shifting of measurement scale, and express value added to calculated (measured) result.

www. levelprosales.com

Page 31

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:

”CHAr”

”Lin” - linear “Sqr” - square “Sqrt” - square root

“USEr”

- user defined characteristic. Maximal length 20 points. Every point is defined by user. Adding, Editing and Deleting of points is done by options „AddP”, „EdtP”, „dELP” („InPt” menu) respectively.

When one of those characteristics is chosen display range is defined by “Lo C” and “Hi C”.

}

If user defined characteristic is selected, and if number of defined points is lower than 2 then warning ”Errc” is displayed in measurement mode.

The process of displayed result calculation is described in details in DISPLAY VALUES CALCULATION paragraph.

- decimal point position. It can be set to one of:

”Pnt”

“Lo C”

“Hi C”

“ 0”, “ 0.0”, “ 0.00”, “0.000” Decimal point position is changed by [^], [v] buttons.

These parameters describe the values displayed for minimum and maximum input current. For example, if input type is set to 4-20 mA “Lo C” parameter define parameter defines the value displayed for 20 mA of input current. Available range for these parameters:

-999 ÷ 9999. N

egative values can be set by ente

s the value displayed when input current is equal 4 mA, and “Hi C”

ring '-' sign on the first position (by use of [^], [v] buttons).

If user defined characteristic is selected (parameter “CHAr” = ”USEr”) the parameters „Lo C” and „Hi C” are not available for modification, due to their values are calculated from defined characteristic.

“AddP”

- this menu allow user to add single point to the user defined characteristic. After selection of this option device waits for „X” and „Y” coordinates of new point. Modification of the

coordinates is done accordingly to numerical parameters edition. Coordinate „X” defines the percentage ratio of input current to selected current range. The „X” range: -99,9 ÷ 199,9. Coordinate „Y” defines displayed value for particular „X” value. The „Pnt” parameter (menu ”inPt ”).

„Y” value can be

changed in range: -999 ÷ 9999, decimal point position depend on

• User can not enter two points with the same value of „X” coordinate. If user trays to do it, ”Err” warning is displayed. To modify any defined point use ”EdtP” option.

•

To distinguish „X” and „Y” coordinates, if „X” coordinate is displayed an additional decimal point on

utmost right position is displayed.

•

If user defined characteristic is selected, and if number of defined points is lower than 2 then

warning ”Errc” is displayed in measurement mode

www. levelprosales.com

Page 32

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

“dELP”

“EdtP”

for selection of point being deleted (by [^], [v] buttons). The short pressing of [ENTER] button causes by switching between X and Y value of the displayed point. The long press (press and hold at least 2 sec) of [ENTER] button causes by displaying „dEL?” ask. If [ENTER] button is pressed again, current point is deleted and new updated number of points of the user defined characteristic is displayed.

- this option allows user to modify of particular point 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 edited (by [^], [v] buttons). The short pressing of [ENTER] button causes by switching between X and Y value of the displayed point. The long press (press and hold at least 2 sec) of [ENTER] button causes by entering to edit the selected coordinate of the point. Modification of the coordinates is done accordingly to numerical parameters edition.

“AddP”, ”dELP” and “EdtP” options are available only if the user defined characteristic is used (it means when parameter “CHAr” = ”USEr”).

“Lo r”, ”Hi r”

- these parameters define the expansion of nominal range in percent. They determine the permissible range of input signal (Figure 7.1).

The permissible range allow user to exceed the nominal range of input signal. If input value is contained in the permissible range a proper result is displayed. If input signal exceeds this range (defined by “Lo r” and “Hi r”), “Lo-” or “- Hi-” warning is displayed depend on input signal value.

”

” ”

“

The “Lo r” parameter is important if input is set to “4-20” mode only, and determines lower border of the permissible range. If input is set to “0-20” mode, lower border of the permissible range is always 0mA. If input is set to “4-20” mode, the lower border is calculated due to expression:

mode)

”

The “Lo r” value can be set from 0 to 99.9%. Parameter “Hi r” determines the upper border of the permissible range accordingly to the expression (for both “0-20”i “4-20”modes):

The value of “Hi r” can be set from 0 to 19.9% In example no 1 of the DISPLAY VALUES CALCULATION paragraph the procedure of the permissible input range determining is presented in details.

www. levelprosales.com

Page 33

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.

Analogue output can be controlled depend on both present measured value and peak value (if peak detection is enabled).

Analogue output mode. Depending on version of the device there are following options:

For active current output:

”oFF” - current output disabled, ”0-20” - current output en “4-20” - current output en ”modb” - curren

t output controlled via RS-485 interface.

abled with 0 ÷ 20 mA mode, abled with 4 ÷ 20 mA mode,

For passive current output:

“Omod”

”OUtL”

“OUtH”

”oFF” - current output disabled, “4-20” - current output en ”modb” - curren

For passive current output:

”oFF” - voltage output disabled, ”0-5” - voltage output enabled ”1-5” - voltage output enabled ”0-10” - voltage “2-10” - voltage ”modb” - voltage output controlled

- this parameter determines the input value for which the output signal is minimal

(depend of output mode „Omod”).

- this parameter determines the input value for which the output signal is maximal

(depend of output mode „Omod”).

t output controlled via RS-485 interface.

output enabled with 0 ÷ 10V mode, output enabled with 2 ÷ 10 V mode,

abled with 4 ÷ 20 mA mode,

with 0 ÷ 5V mode, with 1 ÷ 5V mode,

via RS-485 interface.

The analogue output value is calculated due to formula given below:

Out=

W-" OUtL"

"OUtH" - "OUtL"

X (B-A)+A

Where :

W – displayed value, Out – analogue output value, B – higher range limit (20mA A

– lower range limit (0mA / 4mA / 0V / 1V / 2v),

/ 5V / 10V),

“OutL” parameter can be greater than “OutH”. In this case the conversion characteristic is reversed, it means that if input value raises the output value falls.

www. levelprosales.com

Page 34

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).

Parameter “Lo r” defines lower border of the range due to formula: Outmin = A - (A × “Lo r” %), where:

”Lo r”

”Hi r”

A – lower signal value range li active voltage output) or from 0 to 29.9% (for passive current output).

Paramet B – higher signal value output) or from 0 to 9.9% (for active

In example on page 45 of the DISPLAY VALUES CALCULATION paragraph the procedure of the analogue outputs determining is presented in details.

mit. This parameter can be set from 0 to 99.9% (for active current output and

er “Hi r” defines higher border of the range due to formula: Outmax = B + (B × “Hi r” %), where:

range limit. This parameter can be set from 0 to 19.9% (for active and passive current

voltage output).

- this parameter determines the behaviour of analogue output if any critical situation occurs. According to

version of the device, this parameter can be set:

For active current output:

“noCH” - current will not change,

“AL”

“22.1” - current will be set “3.4” - current will be “0.0” - current will be

For passive current output:

“noCH” - current will not change, “22.1” - current will be set “3.4” - current will be

For active voltage output:

“noCH” - voltage will not change, “11.0” - voltage will be set “5.5” - voltage will be “1.2” - voltage will be “0.6” - voltage will be “0.0” - voltage will be

When the critical situation goes, the output signal will be set to value calculated due to formulas given above.

to 22.1 mA, set to 3.4 mA, set to 0 mA.

to 22.1 mA, set to 3.4 mA,

to 11 V, set to 5.5 V, set to 1.2 V. set to 0.6 V, set to 0 V.

7.3.7. ”bri” parameter

This parameter allows user to set bright of the LED display, bright can be set to conventional values from 1 to

7.3.8. ”HOLd” menu

This menu contains parameters connected with peak detection function. See also full description of the peak detection function in paragraph: DETECTION OF THE PEAK VALUES

www. levelprosales.com

Page 35

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”,

“PEA”

“timE”

“HdiS”

“H r1” ÷ “H r4”

”HOUt”

- minimal detected signal change classified as peak or drop (see Figure 6.4)

- maximum time of displaying of the peak (drop) value, can be set from 0.0 to 19.9 sec, with 0.1 sec. resolution. If „HdiS”=”HOLD” then setting parameter "timE"=0.0 causes holding peak value until [ESC] button is pressed. If „HdiS”=”rEAL” then value "timE"=0.0 means no holding.

- type of displayed values:

”rEAL” - current value is displayed, ”HOLd” - peak (drop) value is displayed,

r4”- relay/LED outputs ( R1÷R4) operation mode:

”rEAL” - relay/LED operates depend on the current value, ”HOLd” - relay/LED operates depend on the

- current output operation mode:

”rEAL” - current output operates depend on the current value, ”HOLd” - current output operates dep

peak (drop) value.

end on the peak (drop) value.

7.3.9. ”SECu” menu

This menu contains presets connected with availability of other parameters:

user password (4-digits number). If this parameter is set at value “0000”, user password is turned off.

If the user do not remember his password, the access to the menu is possible by the “one-use password”. To

“Scod”

get this password please contact with Marketing Division. “Single use password” can be used only one time, after that it is destroyed. Entering this password causes in clearing of user password, it means sets the user password to „0000”.

The “one-use password” can be used ONE TIME ONLY, it is impossible to use it again! The “one-use password” can be restored by Service Division only.

“A r1 ÷ A r4”

this option permits user (”on”) or prohibits (”oFF”) to modify the thresholds of the relays/LEDs R1 ÷ R4 without knowledge about user password.

7.3.10. ”rS” menu

This menu is connected with RS-485 interface, and sets his properties:

“Scod”

”bAud”

- this parameter defines the address of the device, accordingly to Modbus protocol. It can be set in range from 0 to 199. If the value 0 is set then device, responds to frames with address 255 (FFh).

- this parameter determines RS-485 interface baud rate. It can be set to one of 8 possible values: ”1.2”, ”2.4”, ”4.8”, ”9.6”, ”19.2”, ”38.4”,”57.6”,”115.2”, which respond to the baud rates of 1200, 2400, 4800, 9600, 19200, 38400, 57600 and 115200 bit/s respectively.

www. levelprosales.com

Page 36

ITC 450/470 User manual

- this parameter sets the access to the configuration registers of the device. Possible values:

”mbAc”

The access to registers no 04h i 05h cant be denied by ”mbAc” parameter (see: LIST OF REGISTERS).

- this parameter defines maximal time (sec) between following frames received by the device. If the delay will be

”mbtO”

greater than the value of ”mbtO” parameter, the relays and analogue outputs which are controlled via RS-485 interface, will set to alert state (see "OUtP" menu, and “rEL1” menu description). Parameter “mbtO” can be set to values from 0 to 99 seconds. The value 0 means that the time will be not controlled.

”on” - configuration registers can be set via RS-485 interface, ”oFF” - configuration register

s can not be set via RS-485 interface.

”rESP”

- this parameter defines minimal (additional) delay between the Modbus message and the answer of the device (received and sent via RS-485 interface). This additional delay allows the device to work with poor RS-converters which do not works properly on baud rates higher than 19200. This parameter can be set to one of values:

”Std”  - answer as quick as possible, no additional delay ” 10c”

” 20c” ” 50c” ”100c” ”200c”

- answer delayed of 10, 20, 50, 100 of 200 chars respectively, where one character time

In the most cases parameter ”rESP” should be set to ”Std” (no additional delay). Unfortunately for some third party RS-converters ”rESP” should be adjusted experimentally. Table 7.1 contains most frequently used values.

7.3.11. ”Edit” parameter

”dig”

- the change to “by digit” mode,

depends on selected baud rate

Tab.7.1. Settings of ”rESP” parameter

”Slid”

- slide change mode.

7.3.12. ”dEFS” parameter

This setting allows to restore the factory settings of the device. To get the access to this option special password is required: „5465”, next the device displays acknowledge question „SEt?”. Press [ENTER] to acknowledge the restoring of factory settings or [ESC] to cancel.

7.3.13. ”SErv” menu

This menu contains the parameters for authorized service only. To enter this menu proper service password must be entered. Improper settings can causes of damage of the device.

www. levelprosales.com

Page 37

ITC 450/470 User manual

www. levelprosales.com

Page 38

ITC 450/470 User manual

www. levelprosales.com

Page 39

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. Maximum input current is set to 50mA (typical). When temperature of the standard resistor falls, the protection circuit will turn off himself automatically, and the device will measure the input current again. Due to thermal phenomenon in the standard resistor, precision of the measurement may be lower, during few minutes (up to the standard resistor temperature will falls to the environment temperature).

10.DISPLAYED VALUES CALCULATION

For simplicity of examples it's assumed that current input is selected, and all calculations are related to this input. When voltage input is selected calculations are similar (be sure of particular ranges and units). The first step to compute the result of measure is the calculation of the normalized result (it means result of 0-1 range). To do it, the begin of the input range (0 mA for 0-20mA range, and 4mA for 4-20mA range) must be subtracted from measured value. Next, received result must be divided by the width of the input range ( it means 20mA for 0-20mA range, and 16mA for 4-20mA range). So normalized result can be expressed by expressions:

where Iinp. Means input current (in mA), and In – normalized result.

If measured value exceeds the nominal input range (0-20mA or 4-20mA), and do not exceed the permissible input range, then received normalized In result will exceed 0-1 range, e.g. input range 420 mA, input current = 3 mA – the normalized result is equal -0,0625, and for input current = 22 mA, the normalized result is equal 1,125. In such cases presented expressions are still correct.

10.1. ADDITIONAL CALCULATIONS (USED CONVERSION CHARACTERISTIC)

The manner of the additional computation of the displayed result depends on selected conversion characteristic. All presented charts are connected with the input range 4 - 20 mA.

www. levelprosales.com

Page 40

ITC 450/470 User manual

9.1.1. Linear characteristic

The normalized result is converted by fixed coefficients determined by “Lo CAL” and “Hi CAL” parameters (when the normalized results is equal 0, then value “Lo CAL” is displayed, and when the normalized results is equal 1, then value “Hi CAL” is displayed). Expression presented below shows the manner of result calculation:

W=In X ("Hi C"-"Lo C") + "Lo C"

where W means the displayed value.

The value of the “Lo CAL” parameter can be higher than the value of “Hi CAL” parameter. In such a case, for an increasing value of input current the displayed value decreases.

048

Input current [mA]

Figure. 10.1 Normal („Lo C” < ”Hi C) and inverted („Lo C” > ”Hi C) characteristic

12 1620

048

Input current [mA]

12 1620

10.1.2. Square characteristic

The normalized result is squared and further conversion is done as for linear characteristic. Conversion is made accordingly with the expression:

Where W means displayed value.

8 121620

Input current [mA]

48 1216

Input current [mA]

Figure. 10.2 Normal („Lo C” < ”Hi C) and inverted („Lo C” > ”Hi C) characteristic

www. levelprosales.com

Page 41

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:

I ,

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. In this case (In<0) the displayed result is equal “Lo C” (see graphs below).

48 12

Input current [mA]

Figure. 10.3 Normal („Lo C” < ”Hi C) and inverted („Lo C” > ”Hi C) characteristic

16 20

048

Input current [mA]

1216 20

10.1.4. User defined characteristic

User defined characteristic is defined as set of X-Y points. Number of the points is variable and may be set from 2 to 20 points which make linear segments (see graph and see Menu ”inPt”). Due to the normalized result In , the device computes specific segment, e.g. for characteristic from figure below, and In = 0,65 the segment between points X = ”50.0.” and X = ”70.0.” will be chosen. Let's mark those points as PL (point low) i PH (point high) - in this example PL= “50.0,” and PH = “70.0.”, and the normalized result In for the point PL as Ip (in this example Ip = In(PL) = 0,5). The displayed result is calculated accordingly to the expression:

Y Y

n p

where Y(PH), X(PH), Y(PL), X(PL) mean values of X and Y coordinates of PH i PL points.

X X

If the normalized result exceeds the user defined characteristic values, then specific utmost segment, defined by two next points, is used for calculations. If characteristic from figure below is used, and if In>1 then segment defined by points X(PL) = “90.0.”, X(PH) = “100.0.” will be used.

www. levelprosales.com

Page 42

ITC 450/470 User manual

4 8 12

Figure. 10.4 Example of user defined characteristic

1620

9.2. 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 ÷ 22 mA. Lower border of the range is the result of calculations: 4 mA - 4 mA × 20%, and the higher : 20 mA + 20 mA × 10%.

Example 2: The normalized In result calculation

Let the input mode = 4-20 mA. The normalized In result is calculated accordingly to the expression on page 40, so if Iin = 10 mA then 10 mA - 4 mA = 6 mA, and this result should be divided by the width of input range (16 mA). Finally the normalized result: In = 6/16 = 0,375.

In case when input current exceeds nominal measurement range, calculations are similar. For example if input current is equal 2,5 mA then In = (2,5 - 4)/16 In = (20,5 - 4)/16 ≅ 1,0313.

≅ -0,0938, and if input current is equal 20,5 mA then

Example 3: The linear characteristic

Let the input mode = 4-20 mA, and parameters “Lo CAL” and “Hi CAL” equal to 300 and 1200 respectively. The calculations will be done for three different input currents from example 2.

www. levelprosales.com

Page 43

a) Iin =10 mA and In = 0,375

b) I

W 1228.

a) I

=10 mA and In = 0,375

W 1257.

ITC 450/470 User manual

Accordingly to expression on page 44 for linear characteristic: 0,375 × [1200 - 300] 337 and next, the “Lo CAL” value is added to the result , so the displayed value: W 337 + 300 = 637

in = 2,5 mA and In = -0,0938.

W 216.

in = 20,5 mA and In = 1,0313.

c) I

Example 4: The square characteristic

Let the input mode = 4-20 mA, and parameters “Lo CAL” and “Hi CAL” equal to 300 and 1200 respectively. The calculations will be done for there different input currents from example 2.

Accordingly to expression on page 44 for square characteristic: (0,375)2 × [1200 - 300] 127. and next, the “Lo CAL” value is added to the result , so the displayed value: W 127 + 300 = 427

= 2,5 mA and In = -0,0938.

b) I W 308.

= 20,5 mA and In = 1,0313.

c) I

Example 5: The square root characteristic

Let the input mode = 4-20 mA, and parameters “Lo C” and “Hi C” equal to -300 and 1200 respectively. The calculations will be done for there different input currents from example 2.

=10 mA and In = 0,375

a) I

Accordingly to expression on page 42 for square root characteristic:

0,375 × [1200 - 300] 919. and next, the “Lo C” value is added to the result , so the displayed value: W 919 + (-300) = 619

= 2,5 mA and In = -0,0938 , normalized result is negative , so the displayed value is equal to “Lo C”

b) I

parameter: W “Lo C” = -300.

c) Iin = 20,5 mA and In = 1,0313. W 1223.

www. levelprosales.com

Page 44

a) Iin =10 mA and In = 0,375

b) I

W 1228.

a) I

=10 mA and In = 0,375

W 1257.

ITC 450/470 User manual

Accordingly to expression on page 44 for linear characteristic: 0,375 × [1200 - 300] 337 and next, the “Lo CAL” value is added to the result , so the displayed value: W 337 + 300 = 637

in = 2,5 mA and In = -0,0938.

W 216.

in = 20,5 mA and In = 1,0313.

c) I

Example 4: The square characteristic

Let the input mode = 4-20 mA, and parameters “Lo CAL” and “Hi CAL” equal to 300 and 1200 respectively. The calculations will be done for there different input currents from example 2.

Accordingly to expression on page 44 for square characteristic: (0,375)2 × [1200 - 300] 127. and next, the “Lo CAL” value is added to the result , so the displayed value: W 127 + 300 = 427

= 2,5 mA and In = -0,0938.

b) I W 308.

= 20,5 mA and In = 1,0313.

c) I

Example 5: The square root characteristic

Let the input mode = 4-20 mA, and parameters “Lo C” and “Hi C” equal to -300 and 1200 respectively. The calculations will be done for there different input currents from example 2.

=10 mA and In = 0,375

a) I

Accordingly to expression on page 42 for square root characteristic:

0,375 × [1200 - 300] 919. and next, the “Lo C” value is added to the result , so the displayed value: W 919 + (-300) = 619

= 2,5 mA and In = -0,0938 , normalized result is negative , so the displayed value is equal to “Lo C”

b) I

parameter: W “Lo C” = -300.

c) Iin = 20,5 mA and In = 1,0313. W 1223.

www. levelprosales.com

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.

Let the following points will be given: X1 = “00.0.”, Y1 = “-50.0”,

X2= “10.0.”,

....

X6 = “30.0.”, X7 = “40.0.”,

....

X10 = “90.0.”, X11 = “100.0.”, Y11 = “820.0”,

Additionally all other points must to be defined and stored in the device memory.

Y2 = “-30.0”,

Y6 = “30.0”, Y7 = “80.0”,

Y10 = “900.0”,

a) Iin =10 mA and In = 0,375 The segment defined by X6 = “30.0.” and X7 = “40.0.” for this In will be selected. Accordingly to expressions

given for user defined characteristic (see page 42) X6(PL) = 30, Y6(PL) = 30, X7(PH) = 40, Y7(PH) = 80 and Ip = 0,3 , the displayed value :

n p

Y Y

X X

80-30

Y =I

≅

30 67=(0.375-0.3)

40-30

b) Iin = 2,5 mA and In = -0,0938, because of the normalized In value is lower than 0, the segment defined by X1 and X2 will be selected. X1(PL) = 0, Y1(PL) = -50, X2(PH) = 10, Y2(PH) = -30 and Ip = 0. For these values the displayed value W

c) Iin = 20,5 mA and In = 1,0313. , because of the normalized In value is higher than 1, the segment defined by X10 and X11 will be selected, and X10(PL) = 90, Y10(PL) = 900, X11(PH) = 100, Y11(PH) = 820 and Ip = 0,9 for these values the displayed value W

≅ -69.

≅ 795.

Example 7: Current output value calculation

Let the current output parameters be: “modE” = “4-20”, Paramet Output curren

ers “Lo r” and “Hi r” define working range of current output to 3.8 ÷ 21 mA.

“OUtL” = 100, “OUtH” = 200, “Lo r” = 5.0, “Hi r” = 5.0

t will be calculated for three displayed values „D”:

a) D = „17.5” According to formula from page 34: Iout = (17.5-10.0) / (20.0-10.0) × 16 mA + 4 mA = 0.75 ·16 + 4 = 16 mA

www. levelprosales.com

Page 46

ITC 450/470 User manual

Example 6: The user defined characteristic

Calculated Iout do not exceeds the output working range (3.8 - 21 mA). b) D = „20.5”

According to formula from page 34: Iout = (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

c) D = „30.0” According to formula from page 34: Iout = (30.0-10.0) / (20.0-10.0) × 16 mA + 4 mA = 2 ·16 + 4 = 36 mA. Calculated Iout excee current equal to the upper border 21 mA).

ds the output working range (3 - 21 mA), so current output will generate

output working range (3.8 - 21 mA).

of range defined by parameter “Lo r” i “Hi r” (it means

11. THE MODBUS PRO TOCOL HANDLING

Transmission parameters : 1 start bit, 8 data bits, 1 or 2 stop bit (2 bits are send, 1 and 2 bits are accepted when receive), no parity control Baud rate : sel Transmission protocol : MODBUS RTU compatible

The device parameters and display value are available via RS-485 interface, as HOLDINGtype registers (numeric values are given in U2 code) of Modbus RTU protocol. The registers (or groups of the registers) can be read by 03h function, and wrote by 06h (single registers) or 10h (group of the registers) accordingly to Modbus RTU specification. Maximum group size for 03h and 10h functions can not exceeds 16 registers (for single frame).

The device interprets the broadcast messages, but then do not sends the answers.

ectable from: 1200 to 115200 bits/second

www. levelprosales.com

Page 47

ITC 450/470 User manual

11.1. LIST OF REGISTERS

01h

02h No

03h Yes 0 ÷ 3

04h Yes see descr.

05h

06h No -999 ÷ 9999 Peak (drop) value (no decimal point) 08h No 0 ÷ 50 Temperature inside device housing expressed by 1°C

No -999 ÷ 9999 Measurement value (no decimal point)

0h, A0h, 60h,

C0h, 10h,

20h

Yes 0h ÷ 1800h

Yes 2CCh÷1800h

Yes 0h ÷ 1600h

The status of the measurement; 0h - data valid; A0h - top border of the measurement range is exceeded; 60h - bottom border of the measurement range is exceeded; C0h

- sensor failure; 10h - error of user characteristic; 20h - waiting for the first measure “Pnt ” parameter in “InPt” menu (decimal point position)

0 - “ 0”; 1 - “ 0.0”; 2 - “ 0.00”; 3 - “0.000” State of the relays and alarm LED (binary format)

(1 - on, 0 - off): 00000000 000edcba a - relay R1; b - relay R2; c - relay R3; d - relay R2; e - alarm LED; If written, only a, b, c, d bits are important (others are ignored) these bits allows user to control the relays via RS-485 interface

State of active current output, expressed in 1/256 mA units – it means that high byte express integer part, and low byte fractional part of desired output current.

State of passive current output, expressed in 1/256 mA units – it means that high byte express integer part, and low byte fractional part of desired output current.

State of active voltage output, expressed in 1/512 V units – it means that high byte express integer part, and low byte fractional part of desired output voltage.

10h Yes 0 ÷ 20

11h Yes 0 ÷ 3

12h Yes 0 ÷ 255

13h Yes 0 ÷ 3

14h Yes -999 ÷ 9999

15h Yes -999 ÷ 9999

“tyPE” parameter in “InPt” menu (nominal input range): 0 - 0-20 mA range; 1 - 4-20 mA range; 2 - 0-10 V range; 3 - 2-10 V range; 4 - 0-5 V range; 5 - 1-5 V range; 6 - 0-60 mV range; 7 - 0-75 mV range; 8 - 0-100 mV range; 9 - 0-150 mV range; 10 - Pt-100; 11 - Pt-500; 12 - Pt-1000

13 - thermocouple input K; 14 - thermocouple input S; 15 - thermocouple input J; 16 - thermocouple input T; 17 - thermocouple input N; 18 - thermocouple input R; 19 - thermocouple input B; 20 - thermocouple input E;

“CHAr” parameter in “InPt” menu (characteristic type) 0 - linear ; 1 - square; 2 - square root; 3 - user defined

“FiLt” parameter in “InPt” menu (time constant in seconds)

“Pnt ”parameter in “InPt” menu (the copy of 03h register, decimal point position): 0 - “ 0”; 1 - “ 0.0”; 2 - “ 0.00”; 3 - “0.000”

“Lo C” parameter in “InPt” menu, no decimal point included

“Hi C” parameter in “InPt” menu, no decimal point included

www. levelprosales.com

Page 48

ITC 450/470 User manual

16h

17h Yes 0 ÷ 199

18h Yes -99 ÷ 99

19h Yes 0 ÷ 2

20h

21h

22h

23h

24h

25h

Yes 0 ÷ 999 “Lo r” parameter in “InPt” menu, in 0.1%

Yes 0 ÷ 199

No 20D8h

Yes 0 ÷ 7

Yes 0 ÷ 1

Yes see descr.

Yes 0 ÷ 5

“Hi r” parameter in “InPt” menu, in 0.1%

“toFS” parameter in “InPt” menu (shift of measurement scale), expressed by 0.1°C (for RTD input) or by 1.0°C (for TC input)

“Conn” parameter in “InPt” menu (RTD input connection method): 0 - “4 in”; 1 - “3 in”; 2 - “2 in”

Device address Device identification code (ID) “bAud” parameter in “rS” menu (baud rate);

0 - 1200 baud; 1 - 2400 baud; 2 - 4800 baud; 3 - 9600 baud; 4 - 19200 baud; 5 - 38400 baud; 6 - 57600 baud; 7 - 115200 baud

“mbAc” parameter in “rS” menu (permission to write registers via RS-485 interface); 0 - write denied ; 1 - write allowed

Parameters of “SECU” menu (binary format (0 - „oFF”, 1 - „on”): bit 0 - “A r1” parameter; bit 1 - “A r2” parameter bit 2 - “A r3” parameter; bit 3 - “A r4” parameter

“rESP” parameter in “rS” menu (additional response delay); 0 - no additional delay; 1 - ”10c” option; 2 - ”20c” option; 3 - ”50c” option; 4 - ”100c” option; 5 - ”200c” option;

27h

28h 29h 2Ah 2Bh

2Ch

2Dh Yes 1 ÷ 8

2Fh Yes 0 ÷ 1

30h Yes -999 ÷ 9999 31h Yes -999 ÷ 999

Yes 0 ÷ 99

Yes 0 ÷ 1

“mbtO” parameter in “rS” menu (maximum delay between received frames); 0 - no delay checking; 1 ÷ 99 - maximum delay expressed in seconds

“AL” parameter in “bEEP” menu: 0 - off; 1 - on “R1” parameter in “bEEP” menu: 0 - off; 1 - on “R2” parameter in “bEEP” menu: 0 - off; 1 - on “R3” parameter in “bEEP” menu: 0 - off; 1 - on “R4” parameter in “bEEP” menu: 0 - off; 1 - on “bri” parameter (display brightness);

1 - the lowest brightness; 8 - the highest brightness “Edit” parameter (numerical parameters edit mode);

0 - „dig” mode; 1 - „SLid” mode “SEtP” parameter in “rEL1” menu, no decimal point included “HySt” parameter in “rEL1” menu, no decimal point included

www. levelprosales.com

Page 49

ITC 450/470 User manual

32h

33h Yes 0 ÷ 999

34h Yes 0 ÷ 999

35h Yes 0 ÷ 1

36h Yes 0 ÷ 2

37h Yes -999 ÷ 9999

38h Yes -999 ÷ 9999

39h Yes -999 ÷ 999

3Ah Yes 0 ÷ 5

3Bh Yes 0 ÷ 999

Yes 0 ÷ 5

“modE” parameter in “rEL1” menu: 0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode; 4 - “out” mode; 5 - “modb” mode

“t on” parameter in “rEL1” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter - register no. 35h)

“toFF” parameter in “rEL1” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter - register no. 35h)

“unit” parameter in “rEL1” menu: 0 - seconds; 1 - minutes

“AL” parameter in “rEL1” menu: 0 - no changes; 1 - on; 2 - off

“SEt2” parameter in “rEL1” menu, no decimal point included

“SEtP” parameter in “rEL2” menu, no decimal point included

“HySt” parameter in “rEL2” menu, no decimal point included

“modE” parameter in “rEL2” menu: 0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode; 4 - “out” mode; 5 - “modb” mode

“t on” parameter in “rEL2” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter - register no. 3Dh)

3Ch Yes 0 ÷ 999

3Dh Yes 0 ÷ 1

3Eh Yes 0 ÷ 2

3Fh Yes -999 ÷ 9999

40h Yes -999 ÷ 9999

41h Yes -999 ÷ 999

42h Yes 0 ÷ 5

43h Yes 0 ÷ 999

44h Yes 0 ÷ 999

“toFF” parameter in “rEL2” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter - register no. 3Dh)

“unit” parameter in “rEL2” menu: 0 - seconds; 1 - minutes

“AL” parameter in “rEL2” menu: 0 - no changes; 1 - on; 2 - off

“SEt2” parameter in “rEL2” menu, no decimal point included

“SEtP” parameter in “rEL3” menu, no decimal point included

“HySt” parameter in “rEL3” menu, no decimal point included

“modE” parameter in “rEL3” menu: 0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode; 4 - “out” mode; 5 - “modb” mode

“t on” parameter in “rEL3” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter - register no. 45h)

“toFF” parameter in “rEL3” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter - register no. 45h)

www. levelprosales.com

Page 50

ITC 450/470 User manual

45h

46h Yes 0 ÷ 2

47h Yes -999 ÷ 9999

48h Yes -999 ÷ 9999

49h Yes -999 ÷ 999

4Ah Yes 0 ÷ 5

4Bh Yes 0 ÷ 999

4Ch Yes 0 ÷ 999

4Dh Yes 0 ÷ 1

4Eh Yes 0 ÷ 2 “AL” parameter in “rEL4” menu: 0 - no changes; 1 - on; 2 - off

Yes 0 ÷ 1

“unit” parameter in “rEL3” menu: 0 - seconds; 1 - minutes

“AL” parameter in “rEL3” menu: 0 - no changes; 1 - on; 2 - off

“SEt2” parameter in “rEL3” menu, no decimal point included

“SEtP” parameter in “rEL4” menu, no decimal point included

“HySt” parameter in “rEL4” menu, no decimal point included

“modE” parameter in “rEL4” menu: 0 - “noAC” mode; 1 - “on” mode; 2 - “oFF” mode; 3 - “in” mode; 4 - “out” mode; 5 - “modb” mode

“t on” parameter in “rEL4” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter - register no. 4Dh)

“toFF” parameter in “rEL4” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter - register no. 4Dh)

“unit” parameter in “rEL4” menu: 0 - seconds; 1 - minutes

3Ch Yes 0 ÷ 999

4Fh Yes -999 ÷ 9999

50h Yes 0 ÷ 1

51h Yes 0 ÷ 9999

52h Yes 0 ÷ 199

53h Yes 0 ÷ 1

54h Yes 0 ÷ 1

55h Yes 0 ÷ 1

56h Yes 0 ÷ 1

“toFF” parameter in “rEL2” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter - register no. 3Dh)

“SEt2” parameter in “rEL4” menu, no decimal point included

“modE” parameter in “HOLd” menu (type of detected changes): 0 - peaks; 1 - drops

“PEA” parameter in “HOLd” menu (minimum detectable change, no decimal point included)

“timE” parameter in “HOLd” menu, maximum peaks' (or drops') display time expressed in seconds

“HdiS” parameter in “HOLd” menu: 0 - “rEAL” mode ; 1 - “HOLd” mode

“H r1” parameter in “HOLd” menu : 0 - “rEAL” mode ; 1 - “HOLd” mode

H r2” parameter in “HOLd” menu: 0 - “rEAL” mode ; 1 - “HOLd” mode

“H r3” parameter in “HOLd” menu: 0 - “rEAL” mode ; 1 - “HOLd” mode

www. levelprosales.com

Page 51

ITC 450/470 User manual

57h Yes 0 ÷ 1

58h Yes 0 ÷ 1

70h

71h

96h

97h

Yes -999 ÷ 1999

Yes -999 ÷ 9999

72h5 ÷ 95h

Yes -999 ÷ 1999

Yes -999 ÷ 9999

Yes 0 ÷ 3

A0h

Yes 0 ÷ 2

Yes 0 ÷ 5

“H r4” parameter in “HOLd” menu: 0 - “rEAL” mode ; 1 - “HOLd” mode

“HOUt” parameter in “HOLd” menu: 0 - “rEAL” mode ; 1 - “HOLd” mode

The value of „X” coordinate of point no. 1 of the user defined characteristic, expressed in 0.1%

The value of „Y” coordinate of point no. 1 of the user defined characteristic, no decimal point included

Further pairs of „X” - „Y” coordinates of points no. 2 ÷ 19 of the user defined characteristic

The value of „X” coordinate of point no. 20 of the user defined characteristic, expressed in 0.1%

The value of „Y” coordinate of point no. 20 of the user defined characteristic, no decimal point included

“Omod” parameter in “OUtP” menu (active current output mode) 0 - current output disabled; 1 - current output enabled with 4÷20mA mode; 2 - current output enabled with 0÷20mA mode; 3 - current output controlled via RS-485 interface

“Omod” parameter in “OUtP” menu (passive current output mode) 0 - current output disabled; 1 - current output enabled with 4÷20mA mode; 2 - current output controlled via RS-485 interface

“Omod” parameter in “OUtP” menu (active voltege output mode) 0 - voltage output disabled; 1 - voltage output enabled with 0÷5V mode; 2 - voltage output enabled with 1÷5V mode; 3 - voltage output enabled with 0÷10V mode; 4 - voltage output enabled with 2÷10V mode; 5 - voltage output controlled via RS-485 interface

A1h

A2h

A3h

A4h

A5h

Yes -999 ÷ 9999

Yes 0 ÷ 999

Yes 0 ÷ 299

Yes 0 ÷ 199

Yes 0 ÷ 99

Yes 0 ÷ 3

Yes 0 ÷ 2

Yes 0 ÷ 5

“OUtL” parameter in “OUtP” menu, no decimal point included

“OUtH” parameter in “OUtP” menu, no decimal point included

“Lo r” parameter in “OUtP” menu, for active current output and active voltage output, expressed in 0.1%

“Lo r” parameter in “OUtP” menu for passive current output, expressed in 0.1%

“Hi r” parameter in “OUtP” menu for active and passive current output, expressed in 0.1%

“Hi r” parameter in “OUtP” menu for active voltage output, expressed in 0.1%

“AL” parameter in “OUtP” menu (active current output value on critical exception): 0 - no change; 1 - 22.1 mA; 2 - 3.4 mA; 3 - 0 mA

“AL” parameter in “OUtP” menu (passive current output value on critical exception): 0 - no change; 1 - 22.1 mA; 2 - 3.4 mA

“AL” parameter in “OUtP” menu (active voltage output value on critical exception): 0 - no change; 1 - 11 V; 2 - 5.5; 3 - 1.2 V; 4 - 0.6 V; 5 - 0 V

www. levelprosales.com

Page 52

ITC 450/470 User manual

these registers are active only if device is equipped with current or voltage output

after writing to register no 20h the device responds with an “old” address in the message.

after writing to register no 22h the device

the

value of the “mbAc” parameter is also connected to write to this register, so it is possible to block a

responds with the new baud rate.

writes, but impossible

to unblock writes via RS-485 interface, The unblocking of the writes is possible from menu

level only.

The

pairs of „X -Y” coordinates may be defined for any free point. The pair is “free” (it means that particular point is not

defined) if „X” coordinate of this point is equal 8000h. After writing both X and Y coordinate the point is defined and used

in calculation of result. The coordinates of any point can be changed at any time.

11.2. TRANSMISSION ERRORS DESCRIPTION

If an error occurs while write or read of single register, then the device sends an error code according to Modbus RTU specifications (example message no 1).

Error codes: 01h - illegal function (only functions 03h,

06h and 10h are available), 02h - illegal register address 03h - illegal data value 08h - no write permission (see: A0h - excee 60h - ex

d of upper border of input range

ceed of lower border of input range

A0h and 60h codes can appear only during reg

“mbAc” parameter)

. 01h is reading by 03h function (read of a single register).

11.3. EXAMPLES OF QUERY/ANSWER FRAMES

Examples apply for device with address 1. All values are represent hexadecimal. Field description:

ADDR Device address on modbus network FUNC

Function code REG H,L COUNT BYTE C Data byte DATA H,L CRC L,H

Starting address (address of first register to read/write, Hi and Lo byte)

H,L No. of registers to read/write (Hi and Lo byte)

count in answer frame

Data byte (Hi and Lo byte)

CRC error check (Hi and Lo byte)

1. Read of the displayed value (measurement), ITC 450 device address = 01h:

ADDR FUNC

01 03

REG H,L

00 01

COUNT H,L

00 01

CRC L,H

D5 CA

www. levelprosales.com

Page 53

ITC 450/470 User manual

a) The answer (we assume that the measure result is not out of range):

ADDR FUNC

01 03

BYTE C

DATA H,L

00 FF

DATA H, L - Displayed value = 255, no decimal point. Decimal point position can be read from reg. 03h.

b) The answer (if an error occur):

ADDR FUNC

01 03

ERROR

CRC L,H

41 18

ERROR - error code = 60h, bottom border of the measurement range is exceeded

2. Read of device ID code

ADDR FUNC

01 03

REG H,L

00 21

COUNT H,L

00 01

ERROR - error code = 60h, bottom border of the measurement range is exceeded

The answer:

CRC L,H

F8 04

CRC L,H

D4 00

ADDR FUNC

01 03

BYTE C

20 D8

DATA - identification code (20D8h)

3. Change of the device address from 1 to 2 (write to reg. 20h)

ADDR FUNC

01 06

REG H,L

00 20

00 02

DATA H - 0 DATA L - new device

address (2)

The answer (the same as the message):

ADDR FUNC

01 06

REG H,L

00 20

00 02

DATA H,L

COUNT H,L

CRC L,H

A1 DE

CRC L,H

09 C1

CRC L,H

09 C1

www. levelprosales.com

Page 54

ITC 450/470 User manual

4. Change of baud rate of all devices connected to the net (BROADCAST message).

ADDR FUNC

00 06

REG H,L

00 22

COUNT H,L

00 04

CRC L,H

29 D2

DATA H - 0 DATA L - 4, new baud rate 19200 baud

Device do not reply to BROADCAST-type messages.

Read of the registers 1, 2 and 3 in one message (example of reading a number of registries in one frame):

ADDR FUNC

01 03

REG H,L

00 01

COUNT H,L

00 03

CRC L,H

54 0B

COUNT L - the count of being read registers (max.16)

The answer:

ADDR FUNC

01 03

BYTE C

DATA H1,L1

00 0A

DATA H2,L2 DATA H3,L3

0000 00

CRC L,H

01 B478

DATA H1, L1 - reg. 01h (10 - displayed value ”1.0”), DATA H2, DATA H3,

L2 - reg. 02h (0 - no errors),, L3 - reg. 03h (1 - decimal point position ” 0.0”).

There is no full implementation of the Modbus Protocol in the device. The functions presented above are available only.

www. levelprosales.com

Page 55

ITC 450/470 User manual

12. DEFAULT AND USER'S SETTINGS LIST

Parameter Description

Parameters of relay R1 operation (“rEL1” menu)

SEtP

SEt2 Relay R1 second threshold 40.0 28

HYSt Hysteresis of relay R1 0.0 28

modE Operation mode of relay R1 on 28

t on

toFF 0.0 25

unit SEC 25

AL oFF 26

SEtP Relay R2 threshold 40.0 28

Relay R1 threshold 20.0 28

Turn on delay of relay R1 Turn off delay of relay R1

Unit of “t on”, “toFF” parameters of relay R1 Reaction for critical situation of relay R1

Parameters of relay R2 operation (“rEL2” menu)

Default

Value

0.0 25

User's

Value

Desc.

Page

SEt2 Relay R2 second threshold 60.0 28

HYSt Hysteresis of relay R2 0.0 28

modE Operation mode of relay R2 on 28

t on Turn on delay of relay R2 0.0 29

toFF Turn off delay of relay R2 0.0 29

unit Unit of “t on”, “toFF” parameters of relay R2 SEC 29

AL Reaction for critical situation of relay R2 oFF 29

Parameters of relay R3 operation (“rEL3” menu)

SEtP Relay R3 threshold 60.0 28

SEt2 Relay R3 second threshold 80.0 28

HYSt Hysteresis of relay R3 0.0 28

modE Operation mode of relay R3 on 28

www. levelprosales.com

Page 56

ITC 450/470 User manual

Parameter Description

t on

toFF 0.0 29

unit SEC 29

AL oFF 29

SEtP Relay R4 threshold 80.0 28

SEt2 Relay R4 second threshold 100.0 28

HYSt Hysteresis of relay R4 0.0 28

modE Operation mode of relay R4 on 28

t on Turn on delay of relay R4 0.0 29

toFF Turn off delay of relay R4 0.0 29

Turn on delay of relay R3 Turn off delay of relay R3

Unit of “t on”, “toFF” parameters of relay R3 Reaction for critical situation of relay R3

Parameters of relay R4 operation (“rEL4” menu)

Default

Value

0.0 29

User's

Value

Desc.

Page

unit Unit of “t on”, “toFF” parameters of relay R4 SEC 29

AL Reaction for critical situation of relay R4 oFF 29

Activation of acoustic signal (menu “bEEP”)

AL Activation of acoustic signal by critical situation oFF 30

r1 Activation of acoustic signal by relay R1 oFF 30 r2 Activation of acoustic signal by relay R2 oFF 30 r3 Activation of acoustic signal by relay R3 oFF 30 r4 Activation of acoustic signal by relay R4 oFF 30

Configuration of measurement input (“inPt” menu)

tYPE Input mode „4-20” 30

Conn Connection method „4-in” 31

FiLt Filtering time constant (in seconds) 0 31

toFS Shifting of measurement scale 0.0 31

www. levelprosales.com

Page 57

ITC 450/470 User manual

Parameter Description

CHAr Conversion characteristic mode Lin 31

Pnt Decimal point position 0.0 31

Lo C Minimum displayed value (for nominal range) 000.0 31

Hi C Maximum displayed value (for nominal range) 100.0 31

Lo r Hi r Extension of the top of the nominal input range 5.0 (%) 32

Omod Active current output mode „0-20” (mA) 33

OUtL Display value for 0 mA or 4 mA current output 0.0 34

OUtH Display value for 20 mA current output 100.0 34

Lo r

Extension of the bottom of the nominal input range

Active current output configuration (“OUtP” menu)

Extension of the bottom of the nominal output range

Default

Value

5.0 (%) 32

5.0 (%) 34

User's

Value

Desc.

Page

Hi r Extension of the top of the nominal output range 5.0 (%) 34

AL Current output value on critical exception 22.1 (mA) 35

Passive current output configuration (“OUtP” menu)

Omod Passive current output mode „4-20” (mA) 33

OUtL Display value for 4 mA current output 0.0 34

OUtH Display value for 20 mA current output 100.0 34

Lo r Hi r Extension of the top of the nominal output range 5.0 (%) 34

AL Current output value on critical exception 22.1 (mA) 35

Omod Active voltage output mode „0-10” (V) 33

OUtL Display value for 0 V, 1 V or 2 V voltage output 0.0 34

OUtH Display value for 5 V or 10 V voltage output 100.0 34

Extension of the bottom of the nominal output range

Active voltage output configuration (“OUtP” menu)

5.0 (%) 34

www. levelprosales.com

Page 58

ITC 450/470 User manual

Parameter Description

Lo r Hi r

AL Voltage output value on critical exception 11.0 (V) 35

bri Display brightness bri6 35

modE Kind of detected changes norm 35

PEA Minimum detected change 0.0 35 timE Maximum time of peak displaying 0.0 35

HdiS The type of displayed value HOLd 36

H r1 Source of relay R1, and LED R1 control rEAL 36

Extension of the bottom of the nominal output range Extension of the top of the nominal output range

Display parameters

Configuration of peaks detection function (“HOLd” menu)

Default

Value

5.0 (%) 34

User's

Value

Desc.

Page

H r2 Source of relay R2, and LED R2 control rEAL 36 H r3 Source of relay R3, and LED R3 control rEAL 36 H r4 Source of relay R4, and LED R4 control rEAL 36

HOUt Source of current output control rEAL 36

Settings of access to the configuration parameters (“SECu” menu)

A r1

A r2

A r3

A r4

Permission to changes of relay R1 threshold without of the user password knowledge

Permission to changes of relay R2 threshold without of the user password knowledge

Permission to changes of relay R3 threshold without of the user password knowledge

Permission to changes of relay R4 threshold without of the user password knowledge

on 36

www. levelprosales.com

Page 59

ITC 450/470 User manual

Parameter Description

RS-485 interface configuration (menu “rS”)

Addr Device address 0 36

bAud Baud rate 9.6 36 mbAc Permission to changes of configuration registers on 36 mbtO Maximum delay between received messages 0 37

rESP Additional delay of answer transmission Std 37

Configuration of numerical parameters edition

Edit Numerical parameters edit mode dig 37

Default

Value

User's

Value

Desc.

Page

www. levelprosales.com

Page 60

Specification may be modified without notice in advance.

USER MANUAL

METER ITC 450/470 SERIES

For More Information Visit www. levelprosales.com