YASKAWA SI-P3 Technical Manual page 11

◆
Connection Diagram
The PROFIBUS-DP Option must be connected to the network using a 9 pin D-sub connector like shown in
To PROFIBUS-DP
Master
To the next slave
<1> The FE terminal on the PROFIBUS-DP Option is fitted with a ground cable that should be connected to the ground terminal on the drive.
PROFIBUS-DP Termination
■
Because the option card does not have a terminal resistor, terminal resistance must be set using a switch on the 9 pin D-sub connector. Make sure
that only the D-sub connector for the final drive in the network is set for terminal resistance. If any other drive on the network is set for terminal
resistance, communication problems may occur.
Most 9 pin D-sub connectors have a function for disconnecting the output side of the cable. Use only the input side cable entry when connecting
both ends of the network. If the connector is reversed, then communication will not be possible between devices. Most connectors have arrows
indicating the input and output sides.
Terminating resistors without inductors as shown in
require termination with resistors and inductors like shown in
Figure 2
Bus termination ON = incoming and outgoing cables not connected.
Bus termination OFF = incoming and outgoing cables connected.
Figure 3
◆
Prior to Installing the Option Card
Prior to installing the PROFIBUS-DP Option, wire the drive and make necessary connections to the drive terminals. For more information on
wiring and connecting the drive, refer to the installation manual for the drive the PROFIBUS-DP option card is connected to. Verify that the drive
runs normally without the option installed.
YASKAWA ELECTRIC SIEP C730600 42A YASKAWA AC Drive-Option Card PROFIBUS-DP Technical Manual
PROFIBUS Cable Connector
PROFIBUS Cable
(Red)
1B
(Green) 1A
(Red)
2B
(Green) 2A
(Shell)
For the last node on the bus,
turn on the termination resistor switch.
Figure 2 Connection Diagram
Figure 3 can only be used for baud rates below 1.5 Mbps. 1.5 Mbps and higher baud rates
.
9-pin D-sub Connector
Switch
O
Incoming Cable
Figure 3 PROFIBUS Cable Connection with Termination Resistors
VP (pin 6)
B - Data line
RxD/TxD-P (pin 3)
A - Data line
RxD/TxD-N (pin 8)
DGND (pin 5)
Figure 4 Cable Termination of the PROFIBUS-DP Option Cable to EN50170
(pin numbers for a 9-pin D-sub connector)
B-line
3
A-line
8
RTS
4
VP
6
390 Ω 220 Ω 390 Ω
DGND 5
(Shell)
9-pin D-SUB Connector
Bus termination
ON
O
O
OFF
Outgoing Cable
390 Ω
220 Ω
390 Ω
5 Installation Procedure
Figure 2.
Drive
<1>
CN5
FE
SI-P3
11