Seneca Z-8TC-LAB Bedienungsanleitung

MI005171-E

SENECA s.r.l.

Via Austria, 26 – 35127 – PADOVA – ITALY

Tel. +39.049.8705355 - 8705359 - Fax +39.049.8706287

INSTALLATION MANUAL

Z-8TC-LAB

Modbus RTU Module

with 8 ThermoCouple Inputs

ENGLISH 8- 1/THE ORIGINAL VERSION IS IN ITALIAN LANGUAGE

This document is property of SENECA rl. Duplication and reproduction are forbidden, if not authorized.S

Contents of the present documentation refers to products and technologies described in it.

This informations may be modified or integrated for technical and / or commercial requirements.

ENGLISH - 2/8

Dimensions (L×H×W)

17,5 x 102,5 x 111 mm

Weight

140 g.

Case

Material PA6, Black color.

MODULE LAYOUT

lThermocouples measurement : J, K, E, N, S, R, B, T.type

lμMeasurement available in the following sizes: Voltage ( V) or Temperature (°C, °F, °K)

on Integer 16 bit and Floating-point 32 bit, direct o swapped.

lHigh acquisition speed.

lProtection against electrostatic discharge (ESD) up to 4 kV.

lProgrammable value in case of fault or freezing of last measurement.

lEasy power supply and serial bus wiring by means of the Seneca Z-BUS housed in the DIN rail.

lRemovable screw terminals for section Max. 1.5 mm2cable.

lDIP switches conﬁgurable or software conﬁgurable communication parameters.

lRS485 Serial communication with MODBUS-RTU protocol.

lFrontal USB Port for MODBUS-RTU conﬁguration and communication.

lChannels individually activabl and conﬁgurable in pairs.e

For the two inputs of each terminal group, the following common settings are available:

nMeasurement adjustable for temperature or mV.

nProgrammable ﬁlter for reading stabilization.

nRejection programmable at 50 Hz or 60 Hz.

nThree conﬁgurable acquisition speeds (two 14-bit and one 15-bit).

nIntegrated cold-junction compensation.

GENERAL CHARACTERISTICS

Z-8TC is a digital converter for thermocouples, with 8 measurement channels, collected into 4-LAB

terminal groups, insulated up to 1.5 kV, among them, from power supply and from serial

communication line. The module is characterized by a six-point overall insulation.

MODULE DESCRIPTION

13 14 15 16

910 11 12

111 mm

10 mm2,510 mm2,5

13 14 15 16

1234

5678

910 11 12

17,5 mm

ENGLISH - 3/8

Power supply

RS485

MODBUS

Communicat.

1500 VA

1211

Input

IDC10

Input

STANDARDS

EN61000-6-4 Electromagnetic emission, industrial environment

Electromagnetic immunity, industrial environmentEN61000-6-2

SafetyEN61010-1

INSULATION

ENVIRONMENTAL COND.

Temp raturee

Hu ymidit

Altitude

S rage temperatureto

P ction degreerote

-20 – +65°C. –EEPROM storing guaranteed in the range: 0 50 °C.

30% – t condensing90% no

Up to 2000 m a.s.l.

-20 + 85°C–

20IP

MOUNTING

IEC EN60715 DIN Rail

CONNECTIONS

Removable -way terminals4 , mm3.5 pitch, for cable max. 1.5mm .

Rear IDC10 connector for CEI EN60715 rail

Micro USB frontal panel connector.

POWER SUPPLY

Tension

Power absorbed

10 – 40 V or 19 – 28 Vdc ac 50 60 Hz–

Max. 0.6W

COMMUNICATION

PORTS

RS485 on IDC10 rear connector.

PROTOCOLS

MODBUS-RTU.

TC INPUTS

Number of channels

Thermocouple type: J, K, E, N, S, R, B, T.

TECHNICAL SPECIFICATIONS

LED

State

LEDs Meaning

PWR

(Green)

Power supply presence

Off

The device is powered off

FAIL

(Yellow)

Fault or Failure: power supply lack, failed channel, failed

T , internal communication error.hermocouple

RX (Red)

Data reception from 485 communication port.RS

TX (Red)

Data transmission to 485 communication port.RS

LED SIGNALLING ON FRONT PANEL

ENGLISH - 4/8

Before performing any operation is mandatory to read the full contents of this

manual. The module may only be used by qualified and skilled technicians in the field of

electric installation. Specific documentation is available for download at website:

www.seneca.it/products/z-8tc-lab.

Only the Manufacturer is authorized to repair the module or to replace damaged parts.

The product is susceptible to electrostatic discharge, take appropriate countermeasures

during any operation.

No warranty is granted in connection with faults resulting from improper use, from

modifications or repairs carried out by Manufacturer-unauthorized personnel on the device,

or if the content of this user Manual is not followed..

It is forbidden to place anything that could obstruct the ventilation slits.

.It is forbidden to install the module near heat sources

PRELIMINARY WARNINGS

type

Allowed

Range

Linearization

error

type

Allowed

Range

Lineariz.

error

-210 1200 °C–

0.05 °C

-50 1768 °C–

0.02 °C

-200 1372 °C–

0.05 °C

-50 – 1768 °C

0.02 °C

-200 1000 °C–

0.02 °C

250 1820 °C (*)–

0.03 °C

-200 1300 °C–

0.04 °C

-200 400 °C–

0.04 °C

TC INPUTS

Measurement range

Span mV

Impedance

ADC

Total error

Thermal Drift

Disturbance nRejectio

Cold Junction Error

(*)Up to 250 °C: the input is considered equivalent to a null temperature value.

-10,1 81,4 mV.–

10 MΩ.

Configurable to 14 or 15 bit.

14 bit ADC and Rejection 50 Hz: "(0,040 % + 13 μV).

15 bit ADC and Rejection 50 Hz: "(0,035 % + 10 μV).

14 bit ADC and Rejection 60 Hz: "(0,045 % + 16 μV).

15 bit ADC and Rejection 60 Hz: "(0,040 % + 12 μV).

< 100 ppm/K.

Configurable to 50 Hz or to 60 Hz.

<1 °C.

Test Current

<50 nA.

CMRR (1)

>155 dB (tested port towards all the other ones at GND).

DMRR (1) (2)

>60 dB.

(1) The values are valid at the setted rejection frequency, with the filter ON.

(2) For disturbance values where the input signal peak does not exceed the limit of acceptability.

Refernce Standard

EN60584-1 (ITS-90).

TECHNICAL SPECIFICATIONS

ENGLISH - 5/8

1) Install the modules on the DIN rail (max 120).

2) Connect the remote modules using cables of proper length.

On the table the following data about the cables length are provided:

-Bus Length: Modbus network maximum length as a function of the Baud rate.

It is the length of the cables which connect the two bus terminators modules (see table).●MODBUS

-Drop Length: maximum length of a drop line (see table).●MODBUS

MODBUS CONNECTION STANDARDS

Insertion on the IEC EN 60715 DIN rail:

1) Move the two hooks on the back of the module

outwards as illustrated in .Pic 2.

2) Insert the module rear IDC10 connector into a free slot

of DIN rail accessory as you can see in .Pic.1

(the insertion is one way only because the connectors are

polarized).

3) To secure the module to the IEC EN 60715 DIN rail,

tighten the two hooks on the side of the IDC10 rear

connector as shown in .Pic.1

Removal from IEC EN 60715 DIN rail:

As shown in :Pic.2

1) Move outwards the two hooks on the side of the

module, with the help of a screwdriver.

2) Extract the module from the IEC EN 60715 DIN rail.

INSTALLATION ON AND REMOVAL FROM IEC EN 60715 DIN RAIL

In order to ensure optimum performance and a longest working life, the module(s) must be provided

with adequate ventilation and no raceways or other objects that obstruct the ventilation slots.

Never install the modules near heat sources.

We recommend installation in the lower part of the control panel.

INSTALLATION RULES

Disposal of electrical & electronic equipment (applicable throughout the EU and other

countries with separate collection programs). found on this product or on itsThe symbol

packaging indicates that this product it must be handed over to an authorised collection point,

for the recycling of electrical and electronic equipments.

PRELIMINARY WARNINGS

Fig. 1

11 12

Fig. 2

11 12

ENGLISH - 6/8

Power supply

19 28Vac 50 – 60 Hz–

10 40Vdc 0.6 W Max–

IDC10

2POWER SUPPLY

Connect the IDC10 rear connector to provide power supply to module.

The supply voltage must be between:

10 and 40V (any polarity), or between 19 and 28 V .dc ac

The upper limits mus not be exceeded as this can seriously damage the

module If the power supply source is not protected against overload, a safety.

fuse of max. 2.5 A must be installed in the power supply line near the device.

2USB

The module has a micro USB port on frontal panel for conﬁguration and MODBUS-RTU parameters

communication.

ELECTRICAL CONNECTIONS

RS485

GND

IDC10

Power supply

AC-

Power supply

AC+

Fig. 4

Fig. 3

DIP

switch

Slot

Don’t force the insertion of the IDC10 connector into the Z-PC-DIN bus.

The rear IDC10 connector of the module will be inserted on a free slot of Z-PC-DIN accessory.

In the figure you can see the meaning of the various pins of the rear IDC10 connector if you want to

provide the signals directly through this connector. The pictures and show how toPic.3 Pic.4

connect powersupply and RS485 COM1 port to the rear IDC10 connector.

In case of Z-PC-DINAL2-17,5 accessory use, the signals may be provided by terminal blocks.

The figure shows the meaning of terminals and the position of DIP-switch (present on each DIN rail

supports) for network termination (not used in case of Modbus network).

GNDSHLD: Shield to protect the signal inside the connection cables from electromagnetic

disturbances (recommended).

USE OF Z-PC-DINAL ACCESSORY

Module 2

Module 3

Module 1 Module 5

Module 4

Bus Length

DL: Derivation Length

2MODBUS

Bus length

Derivation Length

Baudrate

1200 m

2 m

115kbps

In order to obtain maximum performances it’s

recommended to use a specific shielded cable, as

an example BELDEN 9841.

MODBUS CONNECTION STANDARDS

ENGLISH - 7/8

2INPUT FILTER

The filtering methods can be set for each pair of channels.

The filter consists of two independent low-pass filters:

-FIR Filter , in running average, able to increase the rejection of disturbances to the mains power line

frequency and to reduce measuring noise.

-IIR exponential Filter, with programmable time constant, able to dampen fluctuations.

If an input variation higher than is detected, both filters are forced to adapt rapidly tostep 0.75 mA

the new value, stabilising it only later on.

are available insideDetailed information about filter settings the USER MANUAL in the REGISTER

MODBUS section.

2SOFTWARE CONFIGURATIONS

The configuration software, allows the parameter setting.EASY SETUP

This software is available for free on the Internet site: www.seneca.com.

Some parameters can also be set using DIP-switches.

CONFIGURATIONS

Detailed information about list of MODBUS registers and their functions are available inside the (Z-8TC).USER MANUAL

MODBUS REGISTERS

GND

109

RS485

IDC10

2485RS

Connection for RS485 communication with the Modbus master system

through Z-PC-DINAL2-17.5 accessory.

Note: the indication of the RS485 connection polarity is not standardised

and in some masters may be inverted

28 TC INPUTS

The module input accepts thermocouples type:

J, K, E, N, S, R, B, T.

For electrical connections it is recommended to

use shielded cable.

The two channels that are part of the same

terminal block have the ground terminal internally

connected and aren’t isolated between them.

However, 1.5 kV insulation is guaranteed between

channelsofdifferentterminalblocks.

ELECTRICAL CONNECTIONS

TC 2

TC 1

TC 4

TC 3

TC 6

TC 5

TC 8

TC 7

-- ++

ENGLISH - 8/8

Technical support

[email protected]

Product Informations

[email protected]

CONTACTS

The USB communication port has priority over the port RS485 and is closed after 3 s of inactivity.

The parameters (not configurable) for USB port are: 2400, 8,N,1 Addr. 1. The protocol is MODBUS RTU.

USB COMMUNICATION PORT

2DEFAULT CONDITION FOR THE CONFIGURATION PARAMETERS OF THE MODULE

The instrument is configured from the factory with ÈAll DIP-switches at OFF position

RS485 MODBUS protocol comunication parameters:

38400, 8,N,1 Addr. 1

2DEFAULT CONDITIONS FOR CHANNEL GROUPS OF THE MODULEINPUT

Enabling

Given data

Cold joint compensation

Rejection

ADC / Filter

Thermocouple type

Both channels are enabled

°C

Enabled

50 Hz

ADC 15 bit with average filter

J for both channels

FACTORY SETTINGS

DIP-SWITCHES CONFIGURATION

BAUD

RATE

SW1

9600

19200

38400

57600

ADDRESS

SW1

...

LEGENDA

OFF

BAUD RATE AND ADDRESS FROM EEPROM

SW1

Terminatore

RS485

SW1

OFF

Before setting the DIP switches you must disconnect the power supply.

The DIP-switches position defines the Modbus Address and Baud Rate communication parameters.

In the following table the Baud Rate and Address values are listed as a function of the DIP-switches

position.

Note: If switches from 1 to 8 are in OFF position, communication settings are retrieved from

EEPROM.

2nd Note: The termination of the RS485 line must be carried out only at the ends of the

communication line.

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