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3.3
Power Supply Connection
The converter contains two isolated parts that have to be supplied from two
supplies isolated from each other. The RS-232 interface circuit is supplied from the
TE signals. The TE has to supply at least one of TxD, RTS and DTR signals. The
power take-off does not exceed c.3mA.
The current loop circuits need the power supply as described in 3.2 chapter. If the
converter operates in the passive transmitter and receiver mode it works with the
current supplied via the opposite converter and does not need the external power
supply. When in the active receiver or transmitter mode, the power supply to the
loops is needed. The supply is connected via the DC connector on the converter
case or via 8 (positive) or 4 (negative) contacts on the current loop connector.
The power supply of 12V/100mA is used most often, E0Q4 type. The power supply
voltage may be of maximum 24V for one supplied current loop thus up to 50mA.
4.0
Specifications
4.1
Parameters
RS-232 interface
RS-232 connector
Current loop interface
Current loop connector
Loop current in idle mode
Isolation between interfaces
Transmitted signals
Control signals
RS-232 connector
Transmission mode
Power supply
Maximum range of the link with
parameters: 200Ohm, 50nF / 1km
Maximum data rate
Minimum data rate
Supply
Dimension: Width x Length x Height
Weight
DCE
DB9F
transmitter and receiver
active / passive
DB9M
20mA
1 kV
TxD and RxD, full duplex
are not transmitted, local jumpers
RTS-CTS, DTR-DSR-DCD
DB9F, DCE
half-duplex
external DC supply 6V/200mA
1000m
115 200 bps
50 bps
typ. 12 V, max. 24 V / 50 mA
34 x 64 x 17 mm
25 g
5
ELOE00XZKE001
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