384
YASKAWA ELECTRIC
SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
C.4 Connecting to a Network
C.4 Connecting to a Network
This section explains the connection of a drive to a MEMOBUS/Modbus network and the network termination.
◆
Network Cable Connection
Follow the instructions below to connect the drive to a MEMOBUS/Modbus network.
1.
With the power shut off, connect the communications cable to the drive and the master. Use the terminals shown
in the figure below for network cable connections.
Figure C.2
Figure C.2 Serial Communications Cable Connection Terminals
Note:
Separate the communications cables from the main circuit cables and other wiring and power cables. Use shielded cables for the
communications cables, and properly shielded clamps to prevent problems with noise. When using RS-485 communications,
connect S+ to R+, and S- to R- as shown in the diagram below.
2.
Check or set the terminating resistance at all slaves. Use the description in
Network Termination on page 385
for slaves that are T1000V drives.
3.
Switch the power on.
4.
Set the parameters needed for serial communications (H5-01 through H5-12) using the LED operator.
5.
Shut the power off and wait until the display on the LED operator goes out completely.
6.
Turn the power back on.
7.
The drive is now ready to begin communicating with the master.
◆
Connecting Multiple Drives
The wiring diagram below shows how multiple drives are connected when using MEMOBUS.
■
Using 2-Wire RS-485
Figure C.3
Figure C.3 Wiring for RS-485
Note: 1.
Make sure the terminal resistor is switched on for the final drive in the comm. chain (DIP switch S2).
2.
Set drive parameter H5-07 = 1 when using RS-485.
R+ Receive
(+)
R-
Receive (-)
S+ Send
(+)
S- Send
(-)
IG Shield
Ground
Drive
S2
OFF ON
R+
R–
IG
S+
S–
Drive
S2
OFF ON
R+
R–
IG
S+
S–
Drive
S2
OFF ON
R+
R–
IG
S+
S–
R+
R–
IG
S+
S–
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