Separator DIRS-422/485
Bus isolating repeater DIRS-422/485 allows communication with intrinsically safe devices using RS 422 or RS 485 located in hazardous areas. The basic function is isolation between intrinsically safe circuits located in hazardous areas and standard circuits in non-hazardous areas. Bus isolator DIRS-422/485 allows connecting from hazardous area with RS-232 standard bus through DB9 connector and RS422 or RS485 through screw connector. Intrinsically safe circuit connections are made through screw connector and allows connecting devices working in dust and/or gas hazardous areas compatible with RS422 or RS485 standard.
Intrinsically safe isolating repeater DIRS-422/485 was engineered and manufactured to ensure reliable services in the range of automated explosion proof devices.
Properties
- Non-intrinsically safe DB9 input port (for RS-232 transmission standard)
- Intrinsically safe output screw terminal for wires up to 2,5 mm2 cross section
- Software and hardware controlled transmission speed in range from 1,2 kbps to 1,2Mbps
- Designed to be connected with devices in Zones 0, 20, 1, 21 and in mines
- Compact size
- Montage on standard DIN 35 mm Rail
- Installation in non-hazardous areas or in flameproof enclosure (Ex d)
- Hardware switched terminating impedance
- Operating status LED indicator
- Connection range up to 1200 m with transmission speed up to 93,75 kbps
| Supply voltage Un | 11÷24VDC (protection against polarity reversal) |
| Maximal input voltage Um | 250VAC |
| Rated currebt In | 60mA (for Un=24VDC, transmission 1,5Mbit/s) |
| Rated power Pn | ~3W (for Un=24VDC, transmission 1,5Mbit/s) |
| Ambient temperature range | -20 °C ÷ +70°C |
| IP protection level | IP20 |
| Weight | 0,2kg |
| Dimension | 100mm x 113,5mm x 22,5mm |
| Transmission bandwight | hardware controlled (DIP-switch) in range from 1.2kbit/s to 1,2Mbit/s lub software controlled |
| Terminating impedance | 200 Ohm - hardware controlled (DIP-switch) |
| Connections | screw terminal or DB9 female port |
| Insulation | I.S. RS422-RS485 / RS232-RS422-RS485 1,5kV, I.S. RS422-RS485 / supply 1,5 kV |
| Connection distance |
≤ 1200 m with speed 93.75 kbit/s, ≤ 1000 m with speed 187.5 kbit/s, ≤ 400 m with speed 500 kbit/s, ≤ 200 m with speed 1.5 Mbit/s, |
| Operating status communication | green LED - supply, yellow LED Rx-Tx - transmission |
ATEX IECEx certifications
- I (M1) [Ex ia Ma] I
- II (1)G [Ex ia Ga] IIC
- II (1)D [Ex ia Da] IIIC
Application
- RS 232, RS 422, RS 485 communication bus standard circuits isolation from intrinsically safe circuits in hazardous areas
- Communication between explosion-proof devices through RS 422 / 485 bus standard
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