SIELCO SISTEMI srl
via Roma, 24 - 22070 Guanzate (CO) – Italy
Tel: +39 031899671 – Fax: +39 0313528682
e-mail: info@sielcosistemi.com
website: http://www.sielcosistemi.com
Isolated converter
RS232
RS485 / 422
SS 3580
FEATURES
- Asynchronous serial data transmission
- Automatic baud-rate fitting up to 115.2 Kbps
- Distance up to 1200 m
- Point to point connection or multipoint connection up to 32 modules
- DC or AC power supply
- Galvanic isolation on all ways
- RS232 connection on DB9 or removable terminals
- EMC compliance – CE mark
- Suitable for DIN rail mounting in compliance with EN-50022
GENERAL DESCRIPTION
The device SS3580 is an isolated interface converter between asynchronous serials lines RS232 and RS485 or RS422 that guarantees a full isolation between
power supply, serial line RS-232 and serial line RS-485 or 422 removes eventual ground-loop effects, allowing the use of the device even in the heavy
environmental conditions.
It is designed to operate either on serial interface RS-422 full-duplex 4 wires or RS485 half-duplex 2 wires, with a baud-rate transmission up to 115.2 Kbps.
The transmission is asynchronous without settings of protocol, data format and baud rate.
On the line RS-232 are not necessary handshake commands (RTS, CTS, etc..) to control the baud rate.
SS3000 series devices are designed to be easily mounted on DIN rail, optimizing the space encumbrance. Whereas the thermal dissipation allows it, the
devices can be mounted side by side, allowing a relevant reduction of space requiring. The connections are made by means of removable screw terminals, to
simiplify the handling of the devices.
The SS 3580 is in compliance with the 89/336/EEC directive on the electromagnetic compatibility.
The device is housed in a rough self-extinguishing plastic container which, thanks to its thin profile of 22.5 mm only, allows a high density mounting on EN50022 standard DIN rail.
USER INSTRUCTIONS
Before to install the device, please read the “Installation Instruction” section.
The device SS3580 converts the serial transmission from RS-232 to RS-485 (2 wires) or RS-422 (4 wires) as follows.
The data incoming from the line TX of RS-232 (DB9 connector pin 3) are converted and transmitted to the terminals D-E of RS-485 and RS-422.
The data incoming from the line RX of RS-485 (terminal D and E) or RS-422 (terminal B and C) are converted and transmitted to the terminal RX of RS-232
(DB9 connector pin 2).
The transmission of the signal follows the logic state of every single bit, then there is not necessary to set the protocol, the data format and the baud-rate.
When the transmission line from the RS-232 is off, the RS-485 driver is in the receive condition (high impedance); when the transmission line from the RS-232
goes on, the RS-485 driver switch immediately to the transmission condition (low impedance). The low impedance is kept for about 150 us, then the line returns
automatically in high impedance (receiver).
TECHNICAL SPECIFICATIONS (Typical @ 25 °C and in the nominal conditions)
In compliance with
up to 115.2 Kbps
Current consumption
10 ÷ 30 Vdc
9 ÷ 18 Vac
(18 ÷ 30 Vac optional)
35 mA typ. @ 24Vdc
1,2 Km @ 38400 bps
2 Km @ 19200 bps
3 Km @ 9600 bps
4 Km @ 4800 bps
5 Km @ 2400 bps
7 Km @ 1200 bps
Isolations
Power supply / RS232
Power supply / RS485-422
RS232 / RS485-422
2000 Vac, 50 Hz, 1 min.
2000 Vac, 50 Hz, 1 min.
2000 Vac, 50 Hz, 1 min.
EMC
Immunity
Emission
EN 61000-6-2
EN 61000-6-4
Temperature & Humidity
Operative temperature
Storage temperature
Relative humidity (not condensed)
-20 ÷ +60 °C
-40 ÷ +85 °C
0 ÷ 90 %
Connection
RS-232
RS-485/422
DB9 and removable screw terminals
removable screw terminals
Housing
Material
Mounting
Dimensions in mm.(W x H x T)
Weight
Self-extinguishing plastic
DIN rail in compliance with EN-50022
100 x 120 x 22.5
about 160 gr.
EIA RS232, RS485 and RS422
RS485 Interface
Baud-rate
Max. distance / baud-rate ratio
(recommended) (1)
Number of modules in multipoint
up to 32
Switching time TX/RX (RS485)
150 us.
Internal terminator resistance (optional)
120 Ohm
Power Supply
(1) – The maximum distance depends of: number of devices connected, type of cabling, noises, etc...
WIRING
INSTALLATION INSTRUCTIONS
The SS 3580 device is suitable for fitting to DIN rails in the vertical position.
For optimum operation and long life follow these instructions:
When the devices are installed side by side it may be necessary to
separate them by at least 5 mm in the following case:
- If panel temperature exceeds 45°C and high power supply value( > 27Vdc).
POWER SUPPLY
DC
CABLING
H
V-
G
+
RS232 DB9 ->TERMINALS
DB9
PIN
1
6
2
7
3
8
4
9
5
Make sure that sufficient air flow is provided for the device avoiding to place
raceways or other objects which could obstruct the ventilation slits. Moreover
it is suggested to avoid that devices are mounted above appliances
generating heat; their ideal place should be in the lower part of the panel.
Install the device in a place without vibrations.
Moreover it is suggested to avoid routing conductors near power signal
cables (motors, induction ovens, inverters, etc...) and to use shielded cable
for connecting signals.
AC
V+
8
9
10
V~
J
V~
I
RS232 DB9 -> DB9
DB9
RS-422
DB9
1
6
2
7
3
8
4
9
5
1
2
3
4
5
6
7
8
9
RS485 Point to point
MASTER
SLAVE
SHIELD
A
A SHIELD
D (-)
D
D D (-)
D (+)
E
E D (+)
RS485 Multi point
MASTER
RS-485
~
SLAVE
SHIELD
A
A SHIELD
V-
D (-)
D
D D (-)
V+
D (+)
E
E D (+)
SHIELD
RXRX+
TX-/DTX+/D+
SLAVE
A SHIELD
D D (-)
G
H
I
J
A
B
C
D
E
E D (+)
RS422 Point to point
MASTER
SHIELD
A SHIELD
B
B RX (-)
RX (+) C
C RX (+)
TX (-)
D
D TX (-)
TX (+)
E
E TX (+)
RX (-)
RS-232
SLAVE
A
8
9
10
RS422 Multi point
MASTER
RS-232
SLAVE
SHIELD
A
A SHIELD
RX (-)
B
B RX (-)
RX (+)
C
C RX (+)
TX (-)
D
D TX (-)
TX (+)
E
E TX (+)
SLAVE
A SHIELD
LIGHT SIGNALLING
LED
COLOUR
PWR
GREEN
STATE
DESCRIPTION
ON
Device powered
OFF
Device not powered / Wrong RS-485 cabling.
RAPID BLINK
Communication in progress
depends to baud-rate)
DIMENSIONS (mm)
(blink
B
RX (-)
C
RX (+)
D
TX (-)
E
TX (+)
ISOLATION STRUCTURE
frequency
RS485
RS422
RS-232
POWER SUPPLY
HOW TO ORDER
100
In phase of order it is necessary to specify the type of interface (RS485 or RS422)
and, if required, the 24Vac power supply option.
SS 3580 / 2W / 24
Type of interface:
2W: RS-485 (2 wires)
4W: RS-422 (4 wires)
22.5
AC power supply option:
24 : 24Vac (18÷30Vac)
120
Sielco Sistemi s.r.l. reserves its right to modify the characteristics of its products totally or in part without warning at any time.
= Requested
= Optional
ED.02.07 REV.01
Download PDF
Similar pages