Connecting A Device To The Drive Scan - WEG Drive Scan Manual

5 CONNECTING A DEVICE TO THE DRIVE SCAN

5.1 RECOMMENDATIONS FOR CONNECTION VIA RS-485
When connecting the Drive Scan to any WEG device via serial (RS-485), terminations must be provided at the
external connection points. In cases where both ends are arranged on the CFW, SSW or MVW lines, their interfaces
already have switches to enable the termination resistors.
Termination
In case the ED300 is at an end, it is recommended to use an external termination module, such as those listed
below:
PSB-TERMINATOR-PB-TBUS (Phoenix Contact);
6ES7972-6DA00-0AA0 (Siemens);
AT303 (Smar)
Figure 5.2 illustrates the situation.
Termination
module
ModBus RTU network
...
CFW
Figure 5.1: ModBus RTU network with WEG devices at the ends
Drive Scan
ModBus RTU network
CFW
Figure 5.2: ModBus RTU network with Drive Scan at one end
CONNECTING A DEVICE TO THE DRIVE SCAN
Figure 5.1 illustrates the situation.
Drive Scan
MVW
...
MVW
Termination
SSW
Termination
SSW
Medium Voltage Devices | 5-1
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