gefran 2850T, Инструкция по использованию и установке, Страница: 25 / 166

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2. INSTALLATION
80703B_MHW_2850T/3850T_02-2019_ENG
Ensure that the 24 VDC power supply is fitted with a switch,
or that there is a bipolar switch on the line that connects it
to the mains voltage, in order to easily cut-off power to the
controller in case of need.
2.3.5. Input and output connections
The I/O module input and output lines should be separated
from the power line.
To avoid disturbances, the I/O module input and output
cables must be kept away from the power cables (high
voltage or large current).
Input, output and power cables must not be laid in parallel.
Shielded cable or separate cable ducts are recommended.
Warning! If the controller is connected to NON
isolated electrical devices (i.e. thermocouples), the
ground connection must be made with a specific
conductor to prevent it from being directly through
the machine structure.
The connectors are polarised and accept wires of between
0.2 and 1,5 mm
2
(from 24 to 15 AWG).
Insert the wire in the connector hole corresponding to the
terminal that is to be connected. After inserting the conduc-
tors, push the connector into the module.
To disconnect a wire, place a screwdriver into the slot next
to the conductor, to release the retaining spring.
The following figure shows how to insert or remove a wire
to/from the connector.
Figure 12 - I/O Connectors
2.4. Interface connection diagram
2.5. Ethernet Connections
1 2 3 4 5 6
7
1. Power supply 24 VDC ±25% Also connect the con-
nector to the ground wire.
2. CAN Port DB9 M.
3. Green LED indicates active Ethernet connection.
4. RJ45 Ethernet port 10/100 Mbit/s.
5. Yellow LED indicates data transfer in progress.
6. USB port type A.
Personal computers, servers and multi-purpose controllers
can communicate through the Ethernet connection. This
means that you can:
•
control one or more multi-purpose controllers through
one or more personal computers;
• store data produced or used by one or more multi-pur-
pose controllers on one or more servers and have them
readily available;
• keep one or more multi-purpose controllers time
synced via an NTP (Network Time Protocol).
NTP servers allow computer systems to be synchronised,
meaning all connected devices will have the same time, re-
ferring to a precise external clock and not only the internal
clock, less precise.
Synchronisation enables a value offset of less than one
millisecond for systems belonging to the same network and
in any case less than a few hundred milliseconds for remote
networks.