| The H-4 asynchronous interface converter is suitable
for assembly on a 35 mm DIN mounting rail.
The converter is mounted on the DIN rail by means
of an assembly base, which consists of a retaining
device for the rail and a screw terminal strip for
the interface connections. The interface converter is
placed directly on the assembly base with automatic
contact with the connections. Simple installation or
replacement of devices is guaranteed by this assembly
The H-4 interface converter guarantees codetransparent
conversion of the RS232/V.24, on both
sides, to an RS485 or RS422 interface, the interfaces
being galvanically isolated from each other.
The RS422/RS485 interface is designed for reliable
extension of the internal data line for distances of up
to 1.2 km. The H-4 is operated at a supply voltage of
Interface 1 conforms to the standards EIA RS232
and CCITT V.24/V.28. The signal status is displayed by
means of LED’s (Power, RD, TD and RTS) on the front
panel. The data can be transfered with two twisted
pairs of wires in full duplex, with one pair of wires
in half duplex or simplex. Where one pair of wires
is used the transfer is controlled by the V.24/ RS232
signal RTS (105) or data. The transient protection in
the H-4 provides good protection against lightning
and overvoltages, which protects not only the interface
converter but also the connected, more expensive
terminal devices. The H-4 meets the most
stringent requirements regarding reliability, operation
and performance, and because of simple handling
the devices can be installed without problem.
The Hedin Tex product H-4 has a short delivery.
|
|
|
|
|
|
|
|
| RS422/RS485-RS232 conversion |
| Asynchronous data transfer |
| Full duplex or half duplex |
| Two- or four-wire transfer |
| 0-100,000 bits/s |
| RS485 direction detection: transmit/ receive |
| Galvanic insulation of the interfaces |
| LED displays |
| Simple installation on 35 mm DIN rail |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Technical data H-4 |
|
|
|
| Data transfer:
|
Asynchronous; full-, half duplex or simplex
|
| Interface X1:
|
EIA RS232 and CCITT V.24/V.28
|
| Interface X2:
|
EIA RS422/RS485 and V.11
|
| 2- or 4-wire transfer
|
| Connections:
|
All via DIN 41612 connector or 35 mm DIN
|
| Transfer speed:
|
0-100,000 bits/s, code-transparent
|
| LED displays:
|
Network, TD, RD, DCD/ RTS
|
| Insulation:
|
Galvanic insulation of the interfaces by optocouplers and DC/DC converters; protective conductor connection serves only to discharge interference voltage
|
| Transient protection:
|
Suppressor diodes and varistors
|
| Insulation voltage:
|
420 Vrms
|
| Supply voltage:
|
24V DC, 17-30V DC
|
| Other voltages on request
|
| Current consumption:
|
80mA at 24V DC
|
| Temperature range:
|
5-50°C ambient temperature
|
| Humidity range:
|
0-95% relative humidity
|
| Dimensions in mm:
|
47 x 129 x 134 (WxHxD), assembly base excluded
|
| Assembly base: 75 x 100 x 25 (WxHxD)
|
| Casing material:
|
Plastic ABS, black
|
| aluminium back
|
| Weight:
|
0,25kg
|
| Assembly base, add 0.1 kg
|
| Assembly:
|
By assembly base on 35 mm DIN mounting rail (EN50022)
|
| Conformity:
|
CE
|
|
|
|
| Settings
|
| Two- or four-wire transfer |
| Termination for transmitting and receiving cable |
| Transmission/receiving via RTS or data controlled |
|
|
|
|
|
|
| Range of the RS422/RS485 interface
|
| Maximum transmission distance: 0-1200 metres at 0-100 kbits/s. Use pair twisted, unscreened cables. The transfer characteristics
deteriorate as the capacitance increases and the cable cross-section is reduced. Use screened cables in heavy interference
environment but consider that higher capacitances reduce the transmission distance.
|
|
|
|
|
|
|
| Other model versions
|
| M-4:
|
Interface converter as table-mounted device
|
| R-4:
|
Interface converter as European card for 19" rack RV-1
|
|
|
|
