| Hedin Tex modems are suitable for assembly on a
35 mm DIN rail (protective rail). The modems are
mounted on the DIN rail by means of an assembly
base or foot, consisting of a retaining device for the
rail and a screw terminal strip for the interface connections.
The modems are placed directly on the
assembly base whereby automatic contact with the
connections is established. This assembly base guarantees
simple installation or the possibility of changing
a unit.
All interfaces are directly accessible via the terminal
strip without plug-in bridges/jumpers. The operating
voltage is 24V DC, and the modems support
transfer speeds of up to 100,00 bits/s. They have
duplex, half duplex and simplex facilities. The range
of the M-1 modem interface is up to 21 km. That
of the current loop up to 6 km and the transfer distance
of the RS 485 is up to 1000 m. The signal
status is displayed by means of LED’s (Power, RD,
TD and DCD) on the front panel. The short-distance
modems are code-transparent, i.e. they are completely
independent of the data structure and the
protocols during transmission.
The transient protection in the modems provide
adequate safety in the event of lightning and overvoltages,
and the galvanic insulation of the modem
and converter connections provide protection where
there are potential differences. This protects not
only the devices but also the connected, and more
expensive terminal devices.
H-1: is the short-haul modem corresponding to M-1,
with a V.24/RS232 and an M-1 modem interface. The
maximum transfer speed is 100,000 bits/s, and the
transfer distance is up to 21 km. The modem has the
same functions as M-1.
H-2: This converter converts, in full duplex up to
19.200 bits/s, the current loop (20 mA current loop,
TTY) to a V.24/RS232. The transmitter and receiver
are present as separately active and passive connections
on the screw terminals, and the converter has
the same functions as M-2/R-2.
H-5: This short-distance modem enables the RS485
to be converted to the V.24 or M-1 modem interface,
with transfer speeds of up to 100,000 bits/s. The
modem has the same functions as M-5.
The Hedin Tex products H-1, H-2 and H-5 have short
deliveries, and your Hedin Tex contact will be glad
to provide you with information and is available to
answer your questions at all times.
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| Installation by means of assembly base on the 35 mm DIN rail |
| Connections on assembly base |
| 24V DC operating voltage |
| TTY, RS485, V.24 and M-1 modem interfaces |
| 0-100,000 bit/s, asynchronous |
| Transient protection |
| RS485 direction detection: transmitting/ receiving |
| 4-wire repeater for RS485 |
| Simple installation |
|
|
| Technical data H-1, H-2, H-5 |
|
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| Data transfer:
|
Asynchronous; full-, half duplex or simplex
|
| H-1 interfaces:
|
EIA RS232 and CCITT V.24/V.28 and 10 mA tristate current loop (M-1)
|
| H-2 interfaces:
|
EIA RS232 and CCITT V.24/V.28 and 20 mA current loop.
|
| Setting active or passive.
|
| Receiver current 30 mA max.
|
| Transmitter 27V max. and 30 mA max.
|
| H-5 interfaces:
|
EIA RS232 and CCITT V.24/V.28:
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| 10 mA tristate current loop (M-1) and EIA RS485 (2-wire)
|
| Connections:
|
All via DIN 41612 connector or 35 mm
DIN rail assembly base with screw
terminals.
|
| Transmission speed:
|
0-100.000 Bit/s, abhängig von der
Schnittstelle
|
| code transparent
|
| Insulation:
|
Galvanic insulation of the data transfer
by optocouplers. (M-1 interface and
current loop)
|
| Insulation voltage:
|
M-1 interface: 420 Vrms
|
| Current loop: 420 Vrms
|
| Transient protection:
|
Suppressor diodes and varistors
|
| Supply voltage:
|
24V DC + 10%
|
| Other voltages on request
|
| Current consumption:
|
H-1: 85 mA
|
| H-2: 150 mA
|
| H-5: 70 mA
|
| LED displays:
|
Network, TD, RD and DCD
|
| 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) 0.6 kg
|
| Weight:
|
0.6 kg
|
| Casing material:
|
Plastic ABS, black,
|
| aluminium back
|
| Assembly:
|
By assembly base on 35 mm DIN mounting rail (EN50022)
|
| Conformity:
|
CE
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| Other model versions
|
| H-4:
|
24V DC DIN mounting rail model of the M-4 interface converter
|
| LH-1V:
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Voltage divider for DIN mounting rail
|
| LH-4V:
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RS485 voltage divider for DIN mounting rail
|
| LH-2:
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RS485 repeater for DIN mounting rail
|
