User manual

ASDA-A User Manual Chapter 3 Configuration and Wiring
© DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED 4th Edition 2005/11/30, HE03
3-29
3-5 Serial Communication Connector CN3
3-5-1 CN3 Terminal Layout and Identification
The servo drive can be connected to a PC or controller via a serial communication connector. Users can
operate the servo drive through PC software supplied by Delta (contact to the dealer). The communication
connector/port of Delta servo drive can provide three common serial communication interfaces: RS-232,
RS-485, and RS-422 connection. RS-232 is mostly be used but is somewhat limited. The maximum cable
length for an RS-232 connection is 15 meters (50 feet). Using RS-485 interface can allow longer distance for
transmission and support multiple drives to be connected simultaneously. However, an adapter is required
for converting electric current and voltage when using RS-485 interface.
(6) RS-422 T X-
(4 ) RS- 422 R X -
/ RS -232 RX
(5) RS-422 TX+
(3) RS-422 RX+
(1) GND
CN3
(2) RS-232 TX
Table 3.L Signals of Serial Communication Connector
PIN No. Signal Name
Terminal
Identification
Description
1 Grounding GND -
2
RS-232 data
transmission
RS-232-TX
For data transmission of the servo drive.
Connected to the RS-232 interface of PC.
3 RS-422 data receiving RS-422-RX+
For data receiving of the servo drive
(differential line driver + end)
RS-232 data receiving RS-232_RX
For data receiving of the servo drive.
Connected to the RS-232 interface of PC.
4
RS-422 data receiving RS-422_RX-
For data receiving of the servo drive
(differential line driver - end)
5
RS-422 data
transmission
RS-422-TX+
For data transmission of the servo drive
(differential line driver + end)
6
RS-422 data
transmission
RS-422-TX-
For data transmission of the servo drive
(differential line driver - end)
 Note: For the connection of RS-485, please refer to page 8-2 and 8-3.