~
6
~
ЕТ-485
NOVATEK-ELECTRO
Note
– When restarting the unit, the clients may need to renew the connections.
The unit has a memory to save settings. Every unit is provided with a globally unique MAC-address (during the
production) and can be connected to local networks with a protected access to Internet.
Figure 3
– Structural diagram of the unit
4 MAINTENANCE AND SAFETY MEASURES
4.1 SAFETY MEASURES
4.1.1
ЕТ-485 IS OPERATING A POTENTIALLY LETHAL VOLTAGE;
Power off the unit, as well as any other units connected to it, before maintenance, trouble-shooting
or installation works.
4.1.2 The unit is not designed for operation under impact or vibration conditions.
4.1.3 Do not expose the inner electric components of the unit, as well as input contacts of terminal blocks and
sockets, to water.
4.1.4 Do not operate the unit in aggressive environment with the presence of acids, alkalies, oils, etc. in the air.
4.1.5 Switching, adjustment and maintenance of the unit should be conducted by the qualified personnel, who
is familiar with the provisions of this user manual.
4.1.6 The following regulations should be enforced while operating and maintaining the unit: "Operational
regulations of Electrical Installations", and "Safety Regulations for the Operation of Electrical Installations".
4.2 MAINTENANCE PROC
EDURE FOR ЕТ-485
Suggested maintenance interval
– every six month.
The maintenance procedure includes visual inspection to verify the connection of cables to the
ЕТ-485
terminals, as well as the absence of fractures and cracks on the case.
All safety regulations provided under section 4.1 should be enforced during the maintenance.
5 SWITCHING OF
ЕТ-485
The unit is switched according to the diagram, see Fig. 4.
1)
Switch the cable connection with Modbus network (twisted pair cable of Cat.1 or higher) to the "RS- 485"
socket and Modbus network (or directly to the unit with RS-485 interface).
N o te -
Contact “A” is designed for transferring non-inverted signal, while contact “B” is used for the
inverted signal.
2)
Switch the cable connection with Ethernet network (supplied) to the “Ethernet” socket and Ethernet network.
Any connection peculiarities depending on the type of network are resulted in Appendix A.
3) Switch the power cable connection (copper stranded conductor cable with the cross-section of 0.75 mm
2
and
maximum operating voltage of no less than 40
0V) to “230V” socket, and then connect the cable to the power supply
230V, 50 Hz
6 OPERATING
ЕТ-485
6.1. GENERAL INFORMATION
Powering up the unit will activate "
Error
" and "
RS-485
" indicators, while the unit shall start initiating transceivers.
After that, both indicators go out within 0.5 second and the unit starts working (Ethernet network connection may
take more time depending on the settings of the unit as well as other units connected to the network).
