8ch DI 8ch PNP Output Modbus RS-485 IO Module SS3188 Sielco Sistemi

Description

SS3188 – 8ch DI 8ch PNP Output Modbus RS-485 IO Module from Sielco Sistemi.

The SS3188 module is able to acquire up to 8 digital inputs and to drive up to 8 transistor outputs. The data are transmitted with MODBUS RTU/ASCII protocol on RS-485 network.

To assure safe operation of the system, the device is equipped with two Watch-Dog timers: in case of alarm, the outputs are forced automatically on the safe configuration; also, the outputs are protected against over currents and over temperature. The 2000 Vac galvanic isolation between inputs, outputs, power supply and RS-485 serial line cancels any ground-loop effect noise, allowing the use of the device in worst ambient conditions.

The SS3188 is in compliance to the 89/336/EEC directive on the electromagnetic compatibility. Furthermore, it is housed in a rough self-extinguishing plastic enclosure of 17.5 mm thickness, suitable for EN 50022 standard DIN rail.

The SS3188 is designed to work with the MODBUS RTU/ASCII protocol: standard protocol in field-bus; allows to directly interface SS3000 series devices to the larger part of PLCs and SCADA applications available on the market.

Product Features

Field Bus data acquisition
Master/Slave communication on RS-485 network
MODBUS RTU/ASCII protocol or ASCII protocol
8 digital inputs
8 digital outputs, PNP type
Over-temperature and over-current protection
Watch-Dog alarm
Four ways galvanic isolation 2000 Vac
High accuracy
EMC compliance – CE Mark
In compliance to EN-50022 DIN rail mounting

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

Typical @ 25°C and in the nominal conditions

Digital Inputs
Channels	8
Input Voltage (bipolar)	OFF State: 0 to 3 V ON State: 10 to 30 V
Impedance	4.7 KΩ
Digital Outputs
Channels	8
Type	PNP
Max Voltage	30 Vdc
Max Load	500 mA per channel Over-temperature and Over-current protection
Sample Time	< 10 ms
Data Transmission (asynchronous serial)	Baud Rate: up to 115.2 Kbps Max Distance: 1.2 Km - 4000 ft.
Power Supply Voltage	10 to 30 Vdc
Power Supply Current Consumption	45 mA @ 24 Vdc
Power Supply Polarity Inversion Protection	60 Vdc max
Isolation Voltage	Input - RS485: 2000 Vac 50 Hz, 1 Min. Supply - Input: 2000 Vac 50 Hz, 1 Min. Supply - RS485: 2000 Vac 50 Hz, 1 Min.
Operating Temperature	-10 to +60 °C
Storage Temperature	-40 to +85 °C
Humidity (non condensing)	0 to 90 %
Housing Material	Self-extinguishing plastic
Mounting	EN-50022 DIN rail
Weight	∼ 150 g
EMC	EN 61000-6-2 EN 61000-6-4