Pavone Systems DAT 1400 Technical Manual page 10

LOGIC INPUTS
The two logic inputs are opto-isolated.
The cable connected to the logic input should not be chan-
nelled withthe power cables.
Minimise the length of the connecting cables.
The function of the two inputs is selectable from Set-up:
The two functions are activated by connecting the 24 Vdc external
power supply to the relative terminals as shown in the figure.
LOGIC OUTPUTS
The two opto-isolated relay outputs are of the type with normally
open contacts.
The capacity of each contact is 24 Vdc, 100 mA max. The
output connection cable does not have to be channelled
with power cables. The connection should be as short as
possible.
The environment where the equipment is installed can normally be
subject to strong magnetic fields and electrical disturbances caused
by the machinery present, therefore it is advisable to adopt the
normal precautions in order to prevent them affecting the typical
signals of an electronic precision apparatus. (filters on the remote
control switches, diodes on the 24 VDC relays, etc.)
SERIAL COMMUNICATION
RS232:
The RS232 serial port is normally used for connections to PCs,
printers and repeaters.
To make the serial connection, use a suitable shielded cable, making
sure to ground the shield to just one of the two ends.
The cable must not be channelled with power cables; the
maximumlength is 15 metres (EIA RS-232-C). In the case
of a longer cable, use of the optional RS485 interface is
required.
RS485:
The RS485 serial connection is of the 2-wire type, and allows you
to connect up to 32 instruments to a single MASTER unit (PC, PLC
etc.) by means of a shielded twisted cable, making sure to connect
the shield to the ground of one of the two ends.
The cable should not be ducted with power cables.
NOTE: Links 6-7 and 4-9 are made within the instrument
(are used only for compatibility with the cables of the DAT
400.
Page 8
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OUTPUTS
24 Vdc
100 mA Max
DAT 1400
DAT 1400
5
9
4 6 9 7
1
INPUT 1
INPUT 2
COM. INPUT
9
1
OUTPUT 1
OUTPUT 2
COM. OUTPUT
9
RS232
(20m max)
1
6
RS422/485
N°32 units max
(1000m max)