Westermo LD-63H AC User Manual
Line sharing device, fibre optic
– RS-232/V.24, RS-422/485
INSTALLATION MANUAL
6072-2281
www.westermo.se
LD-63H AC
LD-63H DC
©
Westermo Teleindustri AB • 2000 • Rev. B
Galvanic
Isolation
Transient
Protection
CE
Approved
2 6072-2281
Specifications LD-63H
Transmission Asynchronous*, full/half duplex or simplex
Interface 1 EIA RS-232/ITU-T V.24
9-position detachable screw-terminal
Interface 2 4 ST-connectors, see table of power budget
Indicators Power, TD, RD, TX1, TX2, RX1, RX2
Data rates Up to 115,2 kbit/s
Temperature range 5–50°C, ambient temperature
Humidity 0–95% RH without condensation
Dimension 55x100x128 mm (WxHxD)
Weight 0.6 kg AC / 0.3 kg DC
Mounting On 35 mm DIN-rail
Power supply alternatives
Functional description LD-63H
LD-63H is developed for RS-232 multidrop communication via fibre-optic cables. The H-version
is developed for data and status transmission in a multidrop network. Transmission rates up to
115,2kbit/s and transmission distances up to 25km is possible.
The LD-63H consists of two F/O channels, each with its separate transmitter and receiver
(TX1, TX2, RX1 and RX2). On the front of the unit there are seven LED’s indicating the datatransmission on the channels. The fibre optic interface is transparent which means that data
received on RX1 is retransmitted on TX2 and data received on RX2 on TX1.
The number of LD-63’s that can be connected in series is limited, see chart on page 4.
* Synchronous protocols can be transmitted under certain circumstances.
See ”selection of bits” page 4.
Model description
LD-63H LD-63H LD-63H LD-63H LD-63H
AC 115V AC DC 36–55V DC 110V DC
Power supply 230V AC 115V AC 24V DC 48V DC 110V DC/80V AC
+15/–10% +15/–10% +50/–50% +15/–25% +10/–10%
Frequency 48–62Hz 48–62Hz – – –/48–62Hz
Fuse, F2 100mA S 100mA S 1.6A S 1.6A S 1A T/1A T
5x20 mm 5x20 mm 5x20 mm 5x20 mm –/–
Littelfuse Littelfuse Littelfuse Littelfuse Wickmann
Power consumption 25 mA 50 mA 3W 3W 30 mA
Overvoltage
protection 430V 220V – – 430V
Isolation 1 500V 1 500V 500V 500V 3 750V
RMS
36072-2281
Transmitted power channel 1
Low
S2
High
S2
Transmitted power channel 2
Low
S3: 2–4 is not used
S3
High
S3
ON
1234
ON
1234
ON
12345
ON
12345
Factory settings
S1
ON
123456789
S3
ON
1234
S2
ON
12345
Status signal
Disabled
S1
ON
123456789
Enabled
S1
ON
123456789
Switch settings LD-63H
Status signal disabled implies an active CTS to
the connected equipment.
For reliable function the status signal must be
at a stable state during data transmission.
S3:4-1
S1:1-9
S2:1-5
1
2
3
4
5
6
7
8
9
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