Thermocouple RS
485
Converter 4 channel
Phone: +1 561 779 5660 E-mail : [email protected] - Web Site www.datexel.com
4 channel
Thermocouple to RS
485
Converter
D
D
A
A
T
T
3
3
016
016
FEATURES
- Field-Bus remote data acquisition
- Modbus Slave device on RS-485
- Modbus RTU/ Modbus ASCII protocol
- 4 channels input
- Input configurable for Tc J, K, R, S, B, E, T, N and voltage up to ± 1V
- Watch-Dog Alarm
- Remotely Configurable
- 2000 Vac 3-ways Galvanic Isolation
- High Accuracy
- UL / CE mark
- DIN rail mounting in compliance with EN-50022
(1) Referred to input Span (difference between max. and min.
Values)
(2) A pull-up resistor (10M
W)
is connected to +1V (break sensor)
GENERAL DESCRIPTION
The DAT 3016 device is able to acquire up to 4 analogue input signals. The data are transmitted with MODBUS RTU/MODBUS ASCII protocol on the RS-
485
network (RS-
232
interface is available).
It is possible to connect on input thermocouples or voltage signals up to ± 1V . The Cold Junction compensation for thermocouples is internally performed.
The device guarantees high accuracy and stable measure versus time and temperature.
To ensure the plant safety, two Watch-Dog timer alarms are provided.
The isolation between the parts of circuit removes eventual ground-loop effects, allowing the use of the device even in the heavy environmental conditions.
The DAT 3016 is in compliance with the Directive UL 61010-1 for US market and with the Directive
CSA C22.2 No 61010-1 for the
Canadian market.
The device is housed in a rough self-extinguishing plastic container which, thanks to its thin profile of 17.5mm only, allows a high density mounting on EN-50022
standard DIN rail.
COMMUNICATION PROTOCOLS
The DAT3016 is designed to work with the MODBUS RTU/MODBUS ASCII protocol: standard protocol in field-bus; allows to directly interface DAT3000 series
devices to the larger part of PLCs and SCADA applications available on the market.
For the protocol instructions, refer to the User Guide of the device.
USER INSTRUCTIONS
Before to install the device, please read the “Installation Instruction” section.
If the module configuration is unknown, with device powered off, connect the INIT terminal to the GND terminal (ground), at the next power on the device will be
auto-configured in the default settings (refer to the User Guide of the device).
Connect power supply, serial bus and analogue inputs as shown in the “Wiring” section.
The “PWR” LED state depends on the working condition of the device: see the "Light Signalling" section to verify the device working state.
To perform configuration and calibration operations, read the instructions in the User Guide of the device.
To simplify handling or replacing of the device, it is possible to remove the wired terminals even with the device powered.
TECHNICAL SPECIFICATIONS (Typical @ 25 °C and in the nominal conditions)
Input Accuracy (1)
mV/Tc
the higher of
± 0.05% or 5 uV(1)
Linearity (1)
mV
± 0.1% f.s. (1)
Tc
± 0.2% f.s. (1)
Cold Junction Compensation
± 0.5 °C
Input Impedance
mV, Tc
>/= 1 M
W
(2)
Thermal drift
Full Scale
± 0.005 % / °C (1)
CJC Thermal drift
Full Scale
± 0.02 %/ °C
Lead wire resistance influence
mV, Tc
< 0.8 uV/Ohm (1)
Sample time
0.5 ÷ 1 sec.
Data Transmission
Baud Rate
38.4 Kbps
Max. distance
1.2 Km – 4000 ft
Warm-up time
3 min.
Voltage
25 mV
-25 mV
+25 mV
100 mV
-100 mV
+100 mV
250 mV
-250 mV
+250 mV
1000 mV
-1000 mV
+1000 mV
Thermocouple
J
-210 °C
+1200 °C
K
-210 °C
+1372 °C
R
-50 °C
+1767 °C
S
-50 °C
+1767 °C
B
+400 °C
+1825 °C
E
-210 °C
+1000 °C
T
-210 °C
+400 °C
N
-210 °C
+1300 °C
Input type
Min
Max
INPUT
MECHANICAL SPECIFICATIONS
Material
Self-extinguish plastic
IP Code
IP20
Wiring
wires with diameter
0.8÷2.1 mm
2
/AWG 14-18
Tightening Torque
0.5 N m
Mounting
in compliance with DIN rail
standard EN-50022
Weight
about 150 g.
ISOLATION
Input – RS485
2000 Vac 50 Hz, 1 min.
Supply – Input
2000 Vac 50 Hz, 1 min.
Supply – RS485
2000 Vac 50 Hz, 1 min.
POWER SUPPLY
Power supply voltage
10 .. 30 Vdc
Reverse polarity protection
60 Vdc max
Current consumption
30 mA max.
ENVIRONMENTAL CONDITIONS
Operative Temperature
-10°C .. +60°C
UL Operative Temperature
-10°C .. +40°C
Storage Temperature
-40°C.. +85°C
Humidity (not condensed)
0 .. 90 %
Maximum Altitude
2000 m
Installation
Indoor
Category of installation
II
Pollution Degree
2
CERTIFICATIONS
EMC ( for industrial environments)
Immunity
EN 61000-6-2
Emission
EN 61000-6-4
UL
US Standard
UL 61010-1
Canadian Standard
CSA C22.2 No 61010-1
CCN
NRAQ/NRAQ7
Typology
Open Type device
Classification
Industrial Control
Equipment
File Number
E352854
