Wiring Of Rs485 Communication Cable - Toshiba RS4002Z-0 Instruction Manual

4.3. Wiring of RS485 communication cable

Observe the following when wiring is carried out:
♦ Use shielded twist cables of 0.2 to 2.5 mm
the transmission distance referring to the table below.
Use the same type of wires inside the system.
Recommended transmission cable
Item
Transmission Shielded twist cable
cable
Connection Twist RXA and RXB wires and twist TXA and TXB.
method Twist RXA (or TXA) and RXB (or TXB) wires for 2-wire system.
Note: Connect a terminating resistor at both ends of wires.
Cable length
Cable type
CPEV-CU
1.2 mmφ (single wire)
KMPEV-SB
0.75 mm
KMPEV-SB
0.5 mm
GECLS-9004
AWG24 (0.2 mm
♦ Remove the sheath of wire about 10 mm from the end of wire.
♦ Use a flat-head screwdriver with the blade thickness of 0.6 mm and width of 3.5 mm.
♦ Screw tightening torque for the terminal board screws should be 0.5 to 0.6 N·m
♦ Separate the communication cables at least 20 cm from the main circuit cables. Do not bundle
them together.
Wiring them close to each other may lead to malfunction due to noise.
2
for communication cables. Select wire size depending on
2
(twisted wire)
2
(twisted wire)
2
) (single wire)
Specification
Cable length
1000 m or less
700 m or less
500 m or less
300 m or less
−9−
E6580938
Recommended maker
SHOWA WIRE &
CABLE Co. Ltd.,