Vishay VT 200 - Connecting Power; Figure 6 - Rs485 Cable Connection Diagram

Installation
Connecting Power
VT200/220 Technical Manual, Rev 1.00.01 22 Doc # TM-VT200/220-EN
Figure 6 – RS485 cable connection diagram
2.5 Connecting Power
VT200/220 indicators are powered from 85-265 VAC, via internal power supply board.
The mains power cable is supplied with the instrument.
Power should be isolated from other data processing equipment.
Verify that the AC power socket outlet is properly protected. For optimum EMC
performance, keep the length of cable shielding inside the enclosure as short as
possible.
Chassis
Earth
470
R
150R
470
R
A
B
RT
+V
White
Brown
Shield
Slave #1
(
VT x00
)
Slave #2
(
VT x00
)
(Up to 30
slaves)
…
Slave #30
(VT x00)
A
B A B A B
RT
120R
Termination
Resistor
2X0.34mm
2
twisted pair shielded
Max cable length: 1000m
Network
Biasing
Resistors
Master