8ch mV - Tc Modbus RS-485 IO Module SS10018 Sielco Sistemi

Description

8ch mV – Tc Modbus RS-485 IO Module, SS10018 from Sielco Sistemi.

The SS10018 converts up to 8 analogue input signals, transmitted with MODBUS RTU/ASCII protocol over the RS-485 network.

You can connect 8 voltage signals up to ± 250 mV or thermocouples sensor type B, E, K, J, N, R, S, T. By programming, you are able to scale the input measurement up to ± 32768 points.

The device has many features. Firstly, it guarantees you high accuracy and stable measurement versus time and temperature. A Watch-Dog timer alarm is also provided to ensure plant safety. Additionally, the isolation between parts of the circuit removes eventual ground-loop effects. This allows you to use the device in heavy environmental conditions. In addition, the device is housed in a 6 module DIN rough self-extinguishing plastic box, allowing you to mount on EN-50022 standard DIN rail.

The SS10018 is designed to work with the MODBUS RTU/ASCII protocol, a standard protocol in field-bus. This allows you to directly interface SS10000 series devices to many of the PLCs and SCADA applications available on the market.

Product Features

Modbus Slave device on RS-485
Modbus RTU/ Modbus ASCII protocol
8 input channels for voltage up to ± 250 mV and thermocouples sensor type B, E, K, J, N, R, S, T
Communication parameters configurable by dip-switches
Watch-Dog Alarm
Remotely Configurable
1500 Vac 3-ways Galvanic Isolation
LED signalling on front side for power supply and communication
Connection by removable screw terminals
High Accuracy
CE mark
DIN rail mounting in compliance with EN-50022

For more information and protocol instructions, please see the Product specifications sheet and user manual.

Typical @ 25°C and in the nominal conditions

Voltage Input	50mV: -50 to +50 mV 100mV: -100 to + 100 mV 250mV: -250 to +250 mV
Thermocouple	J: -210 to +1200 °C K: -210 to +1372 °C R: -50 to +1767 °C S: -50 to +1767°C B: +400 to +1825 °C E: -210 to +1000 °C T: -210 to +400 °C N: -210 to +1300 °C
Input Calibration	mV,Tc: ±0.05 % f.s. or 5µV (whichever greater)
Linearity	mV ±0.1 % f.s. Tc ±0.2 % f.s.
Cold Junction Compensation	±1 °C
Input Impedance	mV,Tc >1 MΩ
Thermal Drift	±0.005 % / °C f.s.
CJC Thermal Drift	±0.02 °C/ °C f.s.
Line resistance influence	mv,Tc <0.8µV/Ω f.s.
Sample Time	0.5 to 1 sec
Data Transmission	Baud Rate: 115.2 Kbps Max Distance: 1.2 Km - 4000 ft
Power Supply Voltage	10 to 30 Vdc
Power Supply Current Consumption (operative)	35 mA ma@ 24 Vdc 45 mA max@ 10 Vdc
Power Supply Polarity Inversion Protection	60 Vdc max
Isolation	Between All Ways: 1500 Vac 50 Hz, 1 Min.
Operating Temperature	-10 to +60 °C
Storage Temperature	-40 to +85 °C
Humidity (non condensing)	0 to 90 %
Maximum Altitude	2000 m
Housing Material	Self-extinguishing plastic
IP Code	IP20
Wiring	Wires with diameter 0.8 to 2.1 mm² (AWG 14-18)
Tightening Torque	0.5 N m
Mounting	EN-50022 DIN rail
Weight	∼ 200 g
EMC	EN 61000-6-2 EN 61000-6-4