Chapter 3 Installation and Wiring 27
EV2000 Series Universal Variable Speed Drive User Manual
Func
Terminal
－signal Func
－
RS485
＋
RS485
EV2000
RS485 port
Twisted
cable
RS232
RS485
CN14
EV2000
TD3000
Be able to connect
1-32 RS485
Connect to
PROFIBUS
Func
－
RS485
＋
RS485
TDS-PA01
fieldbus
TDS-PA01
TDS-PA01
···
Terminal
A
B
signal+ Func
Fig. 3-20 Wire connections of RS485-(TDS-PA01)-PROFIBUS communication
If several drives are connected in the network via RS485, the disturbance to the communication system increases, so
the wiring is especially important, you can connect the cables according to the figure below:
Fig. 3-21 Communication between PLC and the drive (the drive and motor are grounded well)
If the communication is still abnormal, then the following actions can be taken:
① Feed a separate AC supply to the PLC(or host PC) and isolate the AC supply;
② If RS485/RS232 conversion module is used, then the module should be powered by a separate power supply;
③ Mount magnetic core to the communication cable, reduce the carrier frequency if the field conditions permit.
2). Description of control terminals CN6 and CN7
Layout of CN6:
P24 Y1 Y2 CME COM DO P24 PLC X1 X2 X3 X4 COM X5 X6 FWD REV COM X7 X8 PE
Layout of CN7:
TA TB TC
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