PAVONE DAT 500 Technical Manual

DAT 500

TECHNICAL MANUAL

For Analog/Probus/Devicenet versions

Digital Transmitter

Software version PW13081

Page II

Page 1

0316

TABLE OF CONTENTS

PRECAUTIONS .............................................................................................. Page 2

INTRODUCTION ........................................................................................... Page 3

TECHNICAL FEATURES ................................................................................... Page 4

INSTALLATION .............................................................................................. Page 5

FRONT PANEL OF THE INSTRUMENT .............................................................. Page 10

USING THE KEYBOARD ................................................................................. Page 11

INFO DISPLAY ............................................................................................... Page 13

VIEWING, ZEROING THE WEIGHT AND SELF-CALIBRATION ............................. Page 14

SETTING ....................................................................................................... Page 18

CHART OF THE MENU ................................................................................... Page 20

SETTING PARAMETERS ................................................................................... Page 22

CALIBRATION................................................................................................ Page 25

WEIGHTING PARAMETERS ............................................................................. Page 27

INPUT/OUTPUT PARAMETERS ......................................................................... Page 29

SERIAL OUTPUT PARAMETERS ......................................................................... Page 32

ANALOG OUTPUT PARAMETERS..................................................................... Page 36

SERIAL COMMUNICATION PROTOCOLS ........................................................ Page 38

FIELDBUS PROTOCOLS .................................................................................. Page 46

TROUBLESHOOTING ..................................................................................... Page 50

GROUNDING CONNECTIONS DAT500 ......................................................... Page 51

INTRINSIC SAFETY BARRIERS .......................................................................... Page 52

OPTION 24 VOLT POWER SUPPLY .................................................................. Page 53

Page 2

PRECAUTIONS

READ this manual BEFORE operating or servicing the instrument.

FOLLOW these instructions carefully.

SAVE this manual for future use.

CAUTION

The installation and maintenance of this instrument must be allowed to qualified personnel only.

Be careful when you perform inspections, testing and adjustment with the instrument on.

Perform the electrical connections in the absence of the power supply

Failure to observe these precautions may be dangerous.

DO NOT allow untrained personnel to work, clean, inspect, repair or tamper with this instrument.

Page 3

INTRODUCTION

The DAT 500 is a transmitter of weight to be combined with the load cells to detect the weight in every situation.

The display allows easy reading of the weight, the status of the instrument, the setting parameters and errors.

The 4 keys located below the display allow the operator to perform the functions of ZERO, TARE, GROSS/NET switching, setting of the setpoints weight, setting and tare both theoretical than real.

The DAT 500 uses the serial port RS232 with ASCII and Modbus RTU protocols for connecting to a PC, PLC and remote units. In parallel with the RS232, a USB port available.

They are always available 2 programmable weight setpoints and the control of the maximum weight value reached (peak).

The RS422/RS485 serial output allows you to connect up to 32 addressable devices.

The availability of the most common fieldbuses, as an alternative to the RS422/RS485 port, also allows the transmitter to interface with any supervision device currently offered by the market.

Available versions:

• DAT 500: weight transmitter with serial output RS232, RS422/RS485 and Peak function. Supported protocols are Modbus RTU, continuous, slave and the ones upon request. Two programmable setpoints, 2 inputs and Peak function.

• DAT 500/A: version with the analog output.

• DAT 500/PROFIBUS: weight transmitter with serial output RS232 and PROFIBUS DP.

• DAT 500/DEVICENET: weight transmitter with serial output RS232 and DEVICENET.

IDENTIFICATION PLATE OF THE INSTRUMENT

It’s important to communicate this data in the event of a request for information or information concerning the instrument together with the program number and version that are shown on the cover of the manual and are displayed when the instrument is switched on.

WARNINGS

The following procedures must be performed by qualified personnel.

All connections must be performed when the instrument is turned off.

Page 4

TECHNICAL FEATURES

Power supply 24 Vdc ± 15 % Max. absorption 5W Insulation Class II Installation category Cat. II Operating temperature -10°C ÷ +40°C (max. humidity 85% non-condensing) Storage temperature -20°C ÷ +50°C Weight display Numerical with 6 red led digits and 7 segments (h 14

mm) Led 4 LEDs of 3 mm Keyboard 4 mechanical keys Overall dimensions 106 mm x 58 mm x 90 mm (l x h x w) Installation Panel mount Case material self-extinguishing Noryl (UL 94 V1) Connections Screw terminal boards, pitch 5.08 mm Load cells power supply 5 Vdc/120mA (max 8 cells of 350W in parallel), short-

circuit protected Input sensitivity 0.02 mV min. Linearity 0.01% of the full scale Temperature drift 0.001% of the full scale / °C Internal resolution 24 bits Resolution of the weight displayed Up to 60,000 divisions on the net capacity Measurement range –0.5 mV/V to +3.5 mV/V Frequency of weight capture 5 Hz - 50 Hz Digital ﬁlter To be selected from 0.2 Hz to 25 Hz Number of weight decimals 0 ÷ 3 decimal places Zero calibration and full scale Automatic (theoretical) or executable from the keyboard. Logic outputs 2 opto-isolated (dry contact), max 24Vdc / 60 mA each Logic inputs 2 opto-isolated at 24 Vdc PNP (external power supply) Serial port (# 2) RS232C or RS422/RS485) Maximum cable length 15m (RS232) and 1000m (RS422 and RS485) Serial protocols ASCII, Modbus RTU Baud rate 2400, 9600, 19200, 38400, 115200 to be selected Program code memory 64 Kbytes FLASH on-board reprogrammable from RS232 Data memory 2 Kbytes

Analog output (optional) Voltage or current Resolution 16 bits Calibration Digital from the keyboard Impedance Voltage: min. 10KΩ; Current: max 300Ω Linearity 0.03 % of the full scale Temperature drift 0.001% of the full scale /°C

Fieldbus (optional PROFIBUS DP, DEVICENET, Buffer dimension 128 byte IN - 128 byte OUT

Page 5

PRG

SET

FUN

1 2

NET

8.8.8.8.8.8.

PRECISE DAT 500

139

130

148

+24 Vdc 0 Vdc

INSTALLATION

GENERAL DATA

The DAT 500 is composed of a motherboard, on which you can add the options available; the motherboard is housed in a plastic enclosure.

The DAT 500 should not be immersed in water, subjected to jets of water and cleaned or washed with solvents.

Do not expose to heat or direct sunlight.

OVERALL DIMENSIONS

ELECTRIC INSTALLATION

The transmitter DAT 500 uses screw terminal boards, pitch 5.08 mm, for the electrical connection. The load cell cable must be shielded and channeled away from tension cables to prevent electromagnetic interference.

INSTRUMENT POWER SUPPLY

The instrument is powered through the terminals 1 and 2. The power cord must be channeled separately from other cables.

The supply voltage is electrically isolated.

Power supply voltage: 24 Vdc/ ± 15% max. 5W.

Page 6

9 10

LOAD CELLS

- Exc

+ Exc

+ Sense

- Sense

- Sig

+ Sig

2+SGN

3-EXC

6+EXC

1-SGN

5+SNS

4-SNS

7SHD

+EXC

-EXC

+SGN

-SGN

SHD

+EXC

-EXC

+SGN

-SGN

SHD

+EXC

-EXC

+SGN

-SGN

SHD

+EXC

-EXC

+SGN

-SGN

SHD

J-BOX CGS4

DAT 500

SENSE-

SENSE+

I OUT+

V OUT+

SIGN-

SIGN+

C OUT

S GND

C OUT

OUT2

C IN

EXC-

EXC+

OUT1

IN2

RX-

RX+

TX -

TX+

IN1

TXD

RXD

12+

+24V

+EXC

-EXC

+SGN

-SGN

SHD

+EXC

-EXC

+SGN

-SGN

SHD

+EXC

-EXC

+SGN

-SGN

SHD

+EXC

-EXC

+SGN

-SGN

SHD

25 pin Connector

FIELDBUS

OPTIONAL

9 10

INPUTS

24 VDC

INPUT 1

INPUT 2

COM. INPUT

CONNECTIONS OF THE LOAD CELL/S

The cell/s cable must not be channeled with other cables, but must follow its own path.

The instrument can be connected up to a maximum of 8 load cells of 350 ohm in parallel. The supply voltage of the cells is 5 Vdc and is protected by temporary short circuit.

The measuring range of the instrument involves the use of load cells with a sensitivity of up to 3.5 mV / V.

The cable of the load cells must be connected to terminals 19-24. In the case of 4-wire load cell cable, jumper the terminals 19 to 22 and 20 to 21.

Connect the cell cable shield to the terminal 2.

In the case of the usage of two or more load cells, use special junction boxes. Below please find their connection.

LOGIC INPUTS

The two logic inputs are opto-isolated.

The cable connecting the logic input should not be channeled with the power cables.

The function of the two inputs is as follows:

INPUT1 Resetting the displayed value (gross, net or peak)

INPUT 2 PRINT

The activation of the two functions is accomplished by bringing the external power supply 24 Vdc to the corresponding terminals as shown in the figure.

Page 7

OUTPUTS

24 Vdc

100 mA Max

OUTPUT 2

OUTPUT 1

COM. OUTPUT

TXD

RXD

S.GND

SHIELD

RS232

(20m max)

9 10

S.GND

TXD+

TXD-

RXD+

RXD-

RS422/485

N°32 units max

(1000m max)

VOLTAGE (10 kΩ min)

ANALOG COM.

CURRENT (300 Ω max)

SHIELD

LOGIC OUTPUTS

The two opto-isolated relay outputs are the normally open contact. The capacity of each contact is 24 Vdc, 100 mA max.

The cable connecting the outputs should not be channeled with the power cables. The connection should be as short as possible.

SERIAL COMMUNICATION

RS232:

The RS232 serial port is always present and handles various protocols.

To achieve the serial connection, use a shielded cable, making sure to connect the shield to one of the two ends: to terminal 8 if connected on the side of the instrument, to the ground if it is connected on the other side.

The cable must not be channeled with power cables; the maximum length is 15 meters (EIA RS-232-C), beyond which you should take the optional RS485 interface.

RS422/RS485:

The serial port RS485 (2-wire) is present in the model DAT 500/ RS485.

To achieve the serial connection, use a suitable shielded cable, making sure to connect the shield to one of the two ends: to terminal 8 if connected on the side of the instrument, to the ground if it is connected on the opposite side.

The cable should not be channeled with the power cables.

ANALOG OUTPUT (OPTIONAL)

The transmitter provides an analog output in current and voltage.

Analog voltage output: range from -10 to 10 V or -5 to 5 V, with minimum load of 10 KΩ.

Analog current output: range from 0 to 20 mA or 4 to 20 mA. The maximum load is 300 Ω.

To achieve the serial connection, use a suitable shielded cable, making sure to connect the shield to one of the two ends: to terminal 2 if connected on the side of the instrument, to the ground if it is connected on the opposite side.

Attention: do not connect the analog output to devices that are switched on.

Page 8

9 6

B_LINE

A_LINE

9 6

PROFIBUS DP CONNECTION

Pin Signal Description

1 - 2 - 3 B line +RxD/+TxD, level RS485 4 RTS Request to send 5 GND Ground (isolated) 6 + 5V Bus Output +5V termination (isolated) 7 - 8 A line -RxD/-TxD, level RS485 9 - Housing Cable shield Internally connected to protective

earth according to Profibus

specification For connection to the Profibus Master, use a standard Profibus cable.

The typical impedance of the cable should be between 100 and 130 Ohms (f> 100 kHz). The cable capacity (measured between conductor and conductor) should be less than 60 pF / m and the minimum cable cross section should not be less than 0.22 mm2

In a Profibus-DP network, you can use either cable type A to type B cable, depending on the required performance. The following table summarizes the features of the cable to be used:

SPECIFICATION TYPE A CABLE TYPE B CABLE

Impedance from 135 to 165 ohm (f

= 3 – 20 MHz)

from 100 to 300 ohm (f

> 100 kHz) Capacity < 30 pF/m < 60 pF/m Resistance < 110 ohm/km Conductor cross

section

> 0,34 mm

> 0,22 mm

The following table shows the maximum length of the wires line with cable type A and type B, function of the different communication speed required:

Baud rate (kbit/s)

9.6 19.2 187.5 500 1500 3000 6000 12000

Cable A lenght (m)

1200 1200 1000 400 200 100 100 100

Cable B lenght (m)

1200 1200 600 200 - - - -

For a reliable operation of the Fieldbus, should be used a line termination at both ends.

In the case of multiple DAT 500 instruments, use the line termination at only one instrument.

For configuring the instrument, the GSD file is available (hms_1810. GSD) that must be installed in the master.

Page 9

V-

V+

CAN_L

CAN_H

SHIELD

54321

DEVICENET CONNECTION

Pin Signal Description

1 V- Negative power bus 2 CAN_L CAN low bus line 3 SHIELD Shield 4 CAN_H CAN high bus line 5 V+ Positive power bus

To connect to the DeviceNet master, use a standard DeviceNet cable or shielded twisted-pair cable as shown on the diagram.

The cable must not be channeled with power cables. For reliable operation of the Fieldbus, should be used as a line termination of 121 Ω value between the terminal CAN_L and CAN_H.

For the configuration of the card is available ESD file that must be installed in the master.

Page 10

SET FUN 0 PRG

1 2 NET

8.8.8.8.8.8.

PRECISE DAT 500

FRONT PANEL OF THE INSTRUMENT

The DAT 500 has a bright 6-digit display, 4 status LEDs and four keys.

In this operating mode the display shows the weight and the LEDs indicate the status of weight and the setpoints.

The set-up parameters are easily accessed and modified through the use of the three front buttons used to select, edit, confirm and save the new settings.

DISPLAY

On the 6-digit display, it’s usually shown the scale weight. According to the various programming procedures, the display is used for programming of the parameters to be stored in the memory, or the messages that indicate the type of operation being carried out and help therefore the Operator in the management and programming of the instrument.

LED INDICATORS

Below the display there are 4 LED indicators:

1 State of the logic output 1 (ON = closed contact OFF = open contact).

2 State of the logic output 2 (ON = closed contact OFF = open contact).

NET The displayed value is the net weight.

0 IT indicates the condition of stable weight.

Page 11

USING THE KEYBOARD

The instrument is programmed and controlled through the keyboard which has 4 keys, with double functions. The selection of one of the key functions is established automatically by the instrument according to the operation in progress. In general, the management of the programming menus is done by using the SET and FUN keys to scroll through the items; the PRG key is used to enter its sub-menu or programmable parameter, while the 0 button allows you exiting the menu or returning to the top level.

KEY FUNCTIONS DURING THE WEIGHT DISPLAY

SET

Access to the menu for the programming of the setpoints

FUN

Select the display view (gross weight, net weight). (Long press) Selection of the weight/peak display

Resetting the displayed value (gross weight, net weight or peak). (Press and hold for 5 sec.) Calibration of zero, to be executed only if its function is enabled in the PARAM menu (see item “0 ALL”).

PRG

Sending the weight string on the serial line. (Long press) Access to the quick set-up menu.

PRG

SET

(Press for 3 sec) Access to the setup menu.

PRG

(Press for3 sec) It accesses the keypad lock/unlock menu and auto-off function of the display.

KEY

FUNCTION DURING THE MAIN MENU DISPLAY

SET

It selects the next parameter.

FUN

It selects the previous parameter.

It exits the programming menu or returns to the upper level.

PRG

It accesses the corresponding sub-menu or programming or confirms the selected parameter.

KEY

FUNCTION WHEN SETTING THE NUMERICAL VALUES

SET

It increases the value of the flashing digit.

FUN

It decreases the value of the flashing digit.

It goes to the next digit.

PRG

It confirms the displayed value.

Page 12

KEY FUNCTION WHEN SETTING THE NUMERICAL VALUES

SET

It selects the next value.

FUN

It selects the previous value.

PRG

It confirms and store the displayed value.

EXIT FROM THE SETTING MENU

Press the

key to return to the main menu. Press the

. key again. It’s displayed “StORE?”.

Press the

PRG

key to return to the main menu.

To exit without saving any changes, switch off the instrument instead of pressing the

PRG

key.

Page 13

INFO DISPLAY

When the instrument is switched ON, you can test the display, then in sequence you can display the identification code of the software and its version. Communication codes in the event of a request for assistance.

ERRORS NOTIFICATION

In the operation mode, the display can report the following error codes.

ϩϩϩϩϩϩ the weight applied to the load cell exceeds by more than 9 divisions the maximum capacity

of the weighing system.

O-L Signal of the load cells absent or outside of the measurement range mV/V.

no CoN Fieldbus network disconnected

E-ProF PROFIBUS interface absent or not operating.

E-dNEt DEVICENET interface absent or not operating.

ϩϩϩϩϩϩ Dash that runs along the perimeter of the display: BLIND function enabled.

ErrNEN Memory error. Press the

PRG

key to reset the memory and return the parameters to their

default values. NOTE: it is also deleted the calibration performed.

Page 14

VIEWING, ZEROING THE WEIGHT AND SELF-CALIBRATION

After being calibrated, at the subsequent switches on, the display shows the current weight.

VIEWING THE NET WEIGHT/GROSS WEIGHT

Press the

FUN

key to toggle between the net weight and the gross weight and vice versa. The value displayed is signaled by the LED NET (lit: net weight). If you have not entered the tare, the net weight is equal to the gross weight.

In case of negative weight, it is displayed the minus sign before the most significant digit.

ZEROING, WEIGHT AND SELF-CALIBRATION

These two functions are performed by pressing

When the instrument is in the operation mode “Net” (“NET” LED on), the

key performs the self-

calibration.

When the instrument is in operation mode “Gross” (“NET” LED off), the

key clears the gross weight.

SELF-CALIBRATION

The execution of self-calibration is possible under the following conditions:

• Instrument under conditions of “Net” (NET” LED on).

• Positive gross weight.

• Gross weight not greater than the maximum capacity.

• Stable weight.

• Unstable weight. In this condition, we must distinguish two cases:

1. The weight stability control is enabled (the parameter “MOTION” (*) must be other than zero): the

command executed while the weight is unstable only has an effect if the weight stabilizes within 3 seconds from the moment the command was given.

2. The weight stability control is disabled (the parameter “MOTION” (*) is equal to zero): the executed

command takes effect immediately, even with unstable weight.

(*) The operating modes of the parameter “MOTION” are described at page 26

The self-calibration is retained in memory even after the power is turned off.

ZEROING

The reset command of the gross weight is used to correct for small zero shifts of the weighing system during normal operation.

Normally these zero shifts are due to thermal drifts or to residues of material that accumulate on the weighing system over the time.

To run the command, it is necessary that the instrument is under conditions of “Gross” (“NET” LED off) and that the deviation of the weight with respect to the zero of the scale (the one performed with the calibration of zero) does not exceed (in positive or negative) the number of divisions set in parameter “0 BAND” (inside the PARAM menu; see page 28).

The reset command of the gross weight does not run if there is even one of the following conditions:

Page 15

• Unstable weight (with control of the stability of the weight enabled). In this case, the reset command takes effect only if the weight stabilizes within 3 seconds or if the control of the weight stability is disabled (parameter “MOTION “ equal to zero).

• Gross Weight greater (in positive or negative) than the number of divisions set in parameter “0 BAND” , when the setpoint of auto-calibration is not programmed.

The zero obtained with the resetting of the gross weight is retained in memory even after the power is turned off.

The reset operation of the gross weight can be repeated several times, but the number of reset divisions zero is added from time to time, so when the total exceeds the limit value set in parameter “0 BAND”, the zero cannot be executed. In this case, it is necessary to calibrate the Zero.

Any auto-zero parameter setting when switching on (AUTO 0) reduces (or cancels, in the case of “AUTO 0”> “0 BAND”) the range of action of the reset command.

PEAK FUNCTION

The instrument continuously memorizes the peak value of the gross weight. The peak value is detected at the same frequency of acquisition of the weight (see table on filters). In addition to visualization, the peak value can be used in the following functions:

FUNCTION DESCRIPTION

LOGIC OUTPUT The setpoints can be set to have the peak value as a reference. (See the

procedure for setting the logic outputs operations).

SERIAL PORT Acquisition of the peak value (peak hold) through the CONTIN, AUTO, DE-

MAND, and MODBUS SLAVE protocols.

ANALOG OUTPUT

The analog output value can assume the value of the peak (peak old). (See the procedure for setting the analog output).

Press the

FUN

key and hold it for 3 seconds until the left of the display shows the letter “P”.

INPUT / OUTPUT FUNCTIONS

INPUT

Resetting the displayed value (gross weight, net weight or peak). Closed for 5 sec. -> Calibration of zero, to be executed only if its function is enabled in the PARAM menu (see item “0 ALL”).

Sending the weight string on the serial line or print.

OUTPUT

1 Setpoint 1 2 Setpoint 2

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PAVONE DAT 500 Technical Manual

Specifications and Main Features

Frequently Asked Questions

User Manual