PAVONE DAT 500, Техническое руководство, Страница: 9 / 56

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OUTPUTS
24 Vdc
100 mA Max
OUTPUT 2
OUTPUT 1
COM. OUTPUT
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TXD
RXD
S.GND
SHIELD
RS232
(20m max)
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S.GND
TXD+
TXD-
RXD+
RXD-
RS422/485
N°32 units max
(1000m max)
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VOLTAGE (10 kΩ min)
ANALOG COM.
CURRENT (300 Ω max)
SHIELD
LOGIC OUTPUTS
The two opto-isolated relay outputs are the normally open contact.
The capacity of each contact is 24 Vdc, 100 mA max.
The cable connecting the outputs should not be channeled with the
power cables. The connection should be as short as possible.
SERIAL COMMUNICATION
RS232:
The RS232 serial port is always present and handles various pro-
tocols.
To achieve the serial connection, use a shielded cable, making sure
to connect the shield to one of the two ends: to terminal 8 if con-
nected on the side of the instrument, to the ground if it is connected
on the other side.
The cable must not be channeled with power cables; the maximum
length is 15 meters (EIA RS-232-C), beyond which you should take
the optional RS485 interface.
RS422/RS485:
The serial port RS485 (2-wire) is present in the model DAT 500/
RS485.
To achieve the serial connection, use a suitable shielded cable, ma-
king sure to connect the shield to one of the two ends: to terminal
8 if connected on the side of the instrument, to the ground if it is
connected on the opposite side.
The cable should not be channeled with the power cables.
ANALOG OUTPUT (OPTIONAL)
The transmitter provides an analog output in current and voltage.
Analog voltage output: range from -10 to 10 V or -5 to 5 V, with
minimum load of 10 KΩ.
Analog current output: range from 0 to 20 mA or 4 to 20 mA. The
maximum load is 300 Ω.
To achieve the serial connection, use a suitable shielded cable, ma-
king sure to connect the shield to one of the two ends: to terminal
2 if connected on the side of the instrument, to the ground if it is
connected on the opposite side.
Attention: do not connect the analog output to devices that are
switched on.