Seneca Z-4RTD2 User manual

ENGLISH 1/8
MI00441-3-EN
Installation
Manual
Contents:
- General description
-Technical specifications
- Connection rules for Modbus and
CAN
- Installation rules
- Electrical connections
- Status indications LED
- Default settings
- Frontal panel
- Accessories
- Disposal.
Installation
Manual
This document is the property of SENECA Srl. Unauthorized duplication and reproduction are forbidden. The content of the present
documentation refers to products and technologies described herein. Such data can be modified and supplemented for technical
and/or commercial reasons.
SENECA s.r.l.
Via Austria, 26 – 35127 – PADOVA – ITALY
Tel. [phone] - Fax [phone]
Configuration software and manuals on our site www.seneca.it
Technical support: [email protected]
Product informations: [email protected]
Z-PC Line
Z-4RTD2
4 Channels RTD input module
with RS485 interface
EN
EN
Z-PC Line

ENGLISH 2/8
General description
Digital converter with four measuring channels , for platinum or nickel thermistors, which
are independent and isolated from each other.
1.5 kV insulation between the inputs, the power supply and serial communication line.A
Easy and fast wiring of power supply and serial communications by means of Seneca
bus for DIN rail IEC EN 60715.
Communication parameters can be configured by DIP-switch or through USB port from
PC or Android device.
1 RS485 serial communication port with MODBUS-RTU protocol, 32 nodes maximum.
Inputs protected against ESD.
High acquisition speed and possible r calibration on the field.e
Measurement of thermistors: PT100, PT500, PT1000, NI100, with 4, 3 or 2 wires
wiring.
Measurement of temperature or resistance.
Eight level filter programmable in order to stabilise reading.
50 Hz or 60 Hz programmable frequency rejection filter.
The measurement available: floating point, reverse floating-point, fixed point at 16 bits,
tenths of degrees with sign for temperature, and tenths of Ohms or hundreds of Ohms
for resistance.
Three selectable acquisition speeds (two with 13 bit resolution, one with 14 bit resolution).
Programmable value in case of fault or freezing of last reading.
Compensation of three wire resistor on the average value of the connection resistor.
Technical Specifications
Input PT100 - EN 60751/A2 (ITS-90)
Input PT500 - EN 60751/A2 (ITS-90)
Measuring range:
-200 – +650 °C
Measuring range:
-200 – +750 °C
Resistance range:
18.5 Ω – 330 Ω
Resistance range:
92.5 Ω – 1800 Ω
Fault signalling:
Rx <18 Ω, Rx >341 Ω
Fault signalling:
Rx < 90 Ω, Rx > 1851 Ω
Current on sensor:
875 A nominalm
Current on sensor:
333 A nominalm
Resistance of cables:
20 Ωmaximum per wire
Resistance of cables:
30 Ωmaximum per wire
Input PT1000 - EN 60751/A2 (ITS-90)
Input NI100
Measuring range:
-200 –+210 °C
Measuring range:
-60 –+250 °C
Resistance range:
185 Ω – 1800 Ω
Resistance range:
69 Ω – 295 Ω
Fault signalling:
Rx <180 Ω, Rx >1851 Ω
Fault signalling:
Rx <60 Ω, Rx >301 Ω
Current on sensor:
333 A nominalm
Current on sensor:
875 A nominalm
Resistance of cables:
30 Ωmaximum per wire
Resistance of cables:
30 Ωmaximum per wire
Rear IDC10 connector (port RS485)
Front Micro USB
1200 –115200 Baud.
2400 Baud,Address 01, Parity NO, Stop bit 1,
Delay on the answer NO, Time Out 3 s
Protocol
Modbus-RTU
Protocol
Modbus-RTU
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ENGLISH 3/8
ADC
Resolution:
14 bit or 13 bit
on input range
Calibration Precision:
0.04 % On resistor,
with Full Scale of:
350 (PT100, NI100) orW
1850 (PT500, PT1000)W
Class\Base Precision:
0.05
Linearity:
0.025 % On resistor,
with Full Scale of:
350 (PT100, NI100) orW
1850 (PT500, PT1000)W
Thermal Drift:
< 50 ppm/K
Power Supply
Voltage
10 –40 V ; 19 –28 V 50 –60 HzCA
Consumption
0.7 W max
Environmental conditions
Temperature
-20 – +70°C; (-20 à +65°C UL)
Saving of parameters in EEPROM guaranteed in range 0 - 50°C
Humidity
30 –90% non-condensing
Altitude
up to 2000 m a.s.l.
Storage temperature
-20 –+85°C
Protection index
IP20
Connections
Removable 4-way screw terminals, max 1.5 mm , 3.5 mm pitch.
2
Rear IDC10 connector for DIN rail IEC EN 60715
Micro USB on the front
Overall dimensions / Box
Dimensions and weight
W: 17.5 mm; H: 102.5 mm; D: 112 mm; / 120g.
Box
PA6, black
Insulations
Standards
The instrument complies with the following standards:
EN61000-6-4 (electromagnetic emission,
industrial environment).
(EN61000-6-2 electromagnetic immunity,
industrial environment).
(safety).EN61010-1
- Use copper conductors.
- Use in Pollution Degree 2 max environment.
-The Power Supply must be Class 2
ADDITIONAL NOTES FOR USE:
You must install a 2.5A max delayed fuse, in series to the power supply connection,
near the module.
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ENGLISH 4/8
Pic. 1b
Z-4RTD2-1
4 RTD Inputs
1.5kV Isolated Module
MADE I N ITALY
Z-4RTD2
FAIL
x
x
x
RX
TX
USB
Y
PWR
x
13 14 15 16
1 2 34
5 6 78
9 10 11 12
Removal from the rail DIN IEC EN 60715
As illustrated in Pic. 1b:
1) Move outwards the two hooks at the side
of the module by levering with a screwdriver.
2) Remove the module from the rail.
Insert in the rail DIN IEC EN 60715
1) Move outwards the two hooks on the rear
side of the module as shown in . 1b.Pic
2) Insert the module by aligning the IDC 10
back connector to the female connector on
the Seneca DIN IEC EN 60715 rail support.
3) To secure the module on the rail support
you must tighten the two hooks on the ends
of the IDC10 rear connector, as shown in Pic.
1a.
Pic. 1a
Z-4RTD2
FAIL
x
x
x
RX
TX
USB
Y
PWR
x
13 14 15 16
1 2 34
5 6 78
9 10 1112
Z-4RTD2-1
4 RTD Inputs
1.5kV Isolated Module
MADE I N ITALY
For maximum performance we recommend the use of special shielded cables, such as
the BELDEN 9841.
Installation rules
The module is designed to be installed in vertical position on a Inrail DIN IEC EN 60715.
order to ensure optimum performance and the longest working life, the module(s) must be
supplied with adequate ventilation and no raceways or other objects must obstruct the
ventilation slots Never install modules above sources of heat; we recommend installation in
.
the lower part of the control panel.
Bus
Length
Derivation
Length
Baud
rate
1200 m
2 m
115 kbps
Module2
Module1
Module3
Module4
Module5
Bus length
Ld = Derivation length
Ld
Terminator Terminator
Connection rules for ModBUS
1) Install modules in the DIN rail
2) Connect the remote modules using cables of proper length.
The following table shows the data for length of cables:
-Bus length: maximum length of the MODBUS network. This is the length of thetotal
cables that connect the two modules on which the bus termination has been inserted.
-Derivation Length: maximum length of a derivation.
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ENGLISH 5/8
Rear Connector (IDC10)
The figure shows the meaning of the IDC10
connector pins in case you to provide thewish
signals directly through it.
The module power supply is available only
from the rear connector.
R 485 GNDS
R 485 AS
RS485 B
Power Supply AC / +
Power Supply AC / -
IDC 10
1
Use of Z-PC-DINAL2-17.5
If you use the Z-PC-DINAL2-17.5 accessory,
then the signals can be supplied via terminal
blocks.
The figure shows the meaning of the
terminals.
GNDSHLD: Shield to protect the connecting
c a b l e s f r o m i n t e r f e r e n c e s i g n a l s
(recommended).
GNDSHLD
AB
GND
POWER
SUPPLY AC+
POWER
SUPPLY AC-
GROUND
DIP-SWITCH
NOT USED
Inputs
The module accepts, at input, temperature probes in platinum and nickel, with 2, 3 or 4 wire
connection. For the electrical connections, we advise you to use shielded cables.
2 WIRES
This connection can be used for short distances (< 10 m) between module and
probe. Remember that this connection introduces a measurement error equal to
the resistance of the connection cables.
3 WIRES
A connection to be used for medium distances (> 10 m) between module and probe.
The instrument compensates the connection of the resistance cables. To ensure
correct compensation, the cables must have the same resistance.
4 WIRES
A connection to be used for long distances (> 10 m) between module and probe. It
offers maximum precision, in view of the fact that the instrument reads the resistance
of the sensor independently from the resistance of the cables.
Channel 1
1
2
4
3
I+
U+
I-
U-
4
3
2Channel 2
5
6
8
7
Channel 3
9
10
12
11
Channel 4
13
14
16
15
Wires
Electrical connections
POWER SUPPLY AND RS485 COMMUNICATION PORT
Power supply and MODBUS interface are available from the bus for Seneca DIN rail
through the accessory Z-PC-DINAL1-35 from the rear IDC10 connector.or
Detailed RS485 serial interface information can be found in the USER MANUAL
downloadable from the website .: www.seneca.it/products/z-4rtd2
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ENGLISH 6/8
(1) The threshold value depends on the type of RTD: T = 8 °C, T = 9 °C, T = 5 °C and T = 5 ° C
PT100 PT500 PT1000 NI100
DIP-Switch settings
In the following tables:
The symbol corresponds to DIP-Switch = 1 (ON).Ç
No indication correspond to DIP-switch = 0 (OFF)
Ç
ON
1Ç
OFF
0È
DIP-Switch SW1
You must set the DIP-switches with the module powered down and without
generation of electrostatic discharges, otherwise the module may be damaged.
1
2
Baud rate
3
4
5
6
7
8
Address
9
Not Used
9600 Baud
Address and communications
parameters from EEPROM
Ç
Always leave to
OFFÈ È
position
Ç
19200 Baud
Ç
Fixed Address 01
È
Ç
Fixed Address 02
Ç
Ç
Fixed Address 03
10
TERMINATION RS485
Ç
38400 Baud
Ç
Fixed Address 04
Ç
Line terminator
inserted
X
X
X
X
X
X
Fixed Address, as from binary
representation
Ç
Ç
57600 Baud
È
No line termination
Ç
Ç
Ç
Ç
Ç
Ç
Fixed Address 63
Filter Setting
The filtering methods can be set for every channel.
The filter consists of two independent low-pass filters:
-Filter FIR, in moving average, able to increase the noise rejection from the mains power line
and to reduce measuring noise.
-Filter IIR exponential, with programmable time constant, able to dampen fluctuations.
If an input variation is higher than threshold , then both filters are forced to quickly adapt toT
the new value, stabilising it only later on. The filter is set with the three least significant bits of
registers MODBUS 40037..40 (refer to section ).MODBUS REGISTERS
The following is a table containing all filter types. Propagation time (90%), that is the
maximum time between the step variation of the input and the variation of the number
which represents it in the Modbus register, including the interrogation time of an individual
register (at 115 kbaud) is indicated for each filter.
The times shown are for 50 Hz setting (for 60 Hz, you can divide by 1.2).
SET
ADC SAMPLING
FILTER
PROP. TIME 90%
Value
Bit ADC
Frequency
Type
< T (1)
> T (1)
000
13 bit
48 Hz
Not Present
45 ms
45ms
001
13 bit
20 Hz
Average
236 ms
103ms
010 (Default)
14 bit
11 Hz
Average
405 ms
179ms
011
14 bit
11 Hz
Media+Exp
1 s
179ms
100
14 bit
11 Hz
Media+Exp
3 s
179ms
101
14 bit
11 Hz
Media+Exp
8 s
179ms
110
14 bit
11 Hz
Media+Exp
24 s
179ms
111
14 bit
11 Hz
Media+Exp
72 s
179ms
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Setting
Micro USB Interface
The module has a Micro USB connector on the front panel and can be configured through
applications and / or software
Setting via PC
For tools and more information about this product, please visit the website:
www.seneca.it/products/z-4rtd2 .
The module can be programmed through the RS485 interface via bus on the rear connector:
for the first configuration you can use the default settings saved in EEPROM at origin
from manufacturer (SW1.–.8 in OFF position) corresponding to:
Address = 001, Baud Rate = 38400 Baud, Parity = none, Number of bits = 8, Stop bit=1.
A second way to program the module is through the micro USB connector on the frontal
panel by using a PC or an Android device after installation of the necessary software.
For more information visit www.seneca.it/prodotti/z-4rtd2
CU-A-MICRO-OTG CU-A-MICROB
Connection
with micro USB
port for
configuration
via APP
Connection
with micro USB
port for
configuration
via PC
CU-A-MICROB PC
Z-4RTD2
FAIL
RX
TX
USB
PWR
13 14 15 16
1 2 34
5 6 78
910 11 12
Factory Configuration
Configuration of the default parameters in the module:
The instrument is configured at the factory with all the DIP-switch in position 0 .È0
0È
0 OFF
1
2
3
4
5
6
7
8
È
È
È
È
È
È
È
È
The position of the dip-switches defines the module's communication parameters.
The default configuration is as follows: Address 1, 38400, no parity, 1 stop bit.
CH1
CH2
CH3
CH4
Type of sensors
PT100
PT100
PT100
PT100
Type of returned Data item, measured in:
°C
°C
°C
°C
Connection
2/4 wires
2/4 wires
2/4 wires
2/4 wires
Rejection at mains frequency
50 Hz
50 Hz
50 Hz
50 Hz
Word, is transmitted first:
most significant Bit (8 bit)
Led signalling of faults to the channel
Yes
Yes
Yes
Yes
Value loaded in case of fault
850°C
850°C
850°C
850°C
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ENGLISH 8/8
Layout
56 7 8
111 0 mm.
17.5 mm
100 mm
13 14 15 16
1 2 34
5 6 78
910 11 12
12 3 4
Disposal
Disposal of Electrical & Electronic Equipment (Applicable throughout the European Union and other European countries with separate
collection programs). This symbol, found on your product or on its packaging, indicates that this product should not be treated as household
waste when you wish to dispose of it. Instead, it should be handed over to an applicable collection point for the recycling of electrical and
electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences to the
environment and human health, which could otherwise be caused by inappropriate disposal of this product. The recycling of materials will
help to conserve natural resources. For more detailed information about the recycling of this product, please contact your local city office,
waste disposal service or thè retail store where you purchased this product.
Front LED indications
LED
STATUS
Description
PWR Green
On
The device is powered correctly.
FAIL Yellow
On
Fault: Low supply, faulty channel, faulty sensor, internal communication
error ( can be deactivated via software).they
RX Red
On
It indicates data receiption on RS485 communication port.
TX Red
On
It indicates the data transmission on RS485 communication port.
Accessories
CODE
DESCRIPTION
Z-PC-DINAL1-35
DIN rail support with screw terminals and 1 slot P = 35 mm
Z-PC-DINAL2-
DIN rail support with screw terminals and 2 slots P = 17.5 mm
Z-PC-DIN1-35
DIN rail with 1 slot support for rear connector P = 35 mm
Z-PC-DIN2-17.5
DIN rail with 2 slots support for rear connector P = 17.5 mm
CU-A-MICROB
USB-A Micro USB-B 5 P cable
MI00441-3-EN