Accessories / 7XV5652

Accessories / 7XV5652
7XV5652 RS232 – FO converter
Function overview
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• Serial baud rates up to 115 kbaud
• No setting of baud rate necessary
LSP2406-afpde.tif
• Protocol transparency
• Light idle state: Light ON / light OFF selectable
• Distance: 3 km with 62.5 /125 µm FO cable
• Wide-range power supply with self-supervision function and
alarm contact
• Supports the serial TxD and RxD lines of the RS232 interface.
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• No handshake lines supported
Fig. 13/57
RS232 – FO converter
Description
The RS232 – FO converter is used to convert serial RS232 signals
to FO transmission signals in full duplex mode. It has one FO
channel for transmission and one for receiving, as well as a
protected RS232 interface rated to withstand 2 kV discharges,
thus allowing direct connection to the serial system interface
of SIPROTEC relays. It is designed to be used in substations for
isolated, interference-free transmission of serial signals to a
central unit, a star coupler or a PC.
The converter supports the conversion of serial TxD (transmit)
and RxD (receive) signals to an optical output. No handshake
signals are supported.
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Siemens SIP · Edition No. 7 13/77
Accessories / 7XV5652
Application, construction
Application
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With the serial RS232 – FO converter, an
existing RS232 interface at a SIPROTEC
relay can be upgraded to an optical
820 nm interface to connect the relay with
further optical components for central and
remote interrogation with DIGSI. Another
application is the interfacing between a
line differential relay and a communication
network, which provides electrical RS232
inputs. The connection between the communication room, where the converter is
located, and the relay is executed without
interference via multi-mode FO cables
(Fig. 13/58).
Construction
The converter is provided with a snap-on
mounting housing for a 35 mm EN 50022
rail. Auxiliary power supplies can be
connected via screw-type terminals. The
fiber-optic cables are connected by ST
connectors. The unit is free of silicone and
halogen as well as flame-retardant.
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13/78 Siemens SIP · Edition No. 7
Fig. 13/58
Remote interrogation with the RS232 interface
Accessories / 7XV5652
Technical data, selection and ordering data
Technical data
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Rated auxiliary voltage
DC 24 to 250 V and AC 60 to 230 V
± 20 % without switchover
Current consumption
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Approx. 0.1 to 0.2 A
LEDs
1 LED
Green
Operating voltage o.k.
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Connectors
Power supply
2-pole Phoenix screw-type terminal
FO cables
820 nm ST connector
RS485
9-pin SUB-D socket
Alarm contact
2-pole Phoenix screw-type terminal
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Light idle state
Light ON/OFF selectable
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Housing
Plastic housing, EG90, charcoal grey; 90 × 75 × 105 mm (W × H × D)
for snap-on mounting on 35 mm EN 50022 rail
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Selection and ordering data
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Description
Order No.
7XV5652 RS232 – FO converter
7XV5652-0BA00
For conversion of FO to RS232 (V.24) signals up to 115 kbaud
With plastic housing for snap-on mounting on 35 mm rail
Rated auxiliary voltage DC 24 – 250 V and AC 110 – 230 V with alarm contact.
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Connection of units with RS232 interface by 9-pin SUB-D connector
Connection of PC, star coupler, modem via FO cable for 62.5/125 μm and 850 nm wavelength
Fiber-optic connectors: FO 820 nm with ST connector
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Siemens SIP · Edition No. 7 13/79