Appendix
Specification of SN200G high-performance vector convertor
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Appendix E: Instructions of RS-485 communication expansion card
(SN200GTX1)
(Apply to all series)
I. Introduction
It’s specially developed for 485 communication function of SN200G series frequency convertor. By
adopting isolation scheme, electric parameters conform to international standard and users can select
based on demands so as to control operation of frequency convertor and set parameters through remote
serial port;
II. Mechanical installation and functional descriptions of control terminals
1. Installation way and appendix B: the same with IO expansion card (SN200GIO1). Functional
descriptions of wiring terminals and dial-up definitions respectively refer to Table 1 and
Table 2 in Appendix E:
Functional description of control terminal:
Appendix E: Table 1 Functional
description of control terminal
Category
Terminal symbolTerminal name
Functional description
485 communication
(CN1)
485+/485-
Communication interface
terminal
485 communication input terminal,
isolation input
CGND
Power ground of 485
communication
Isolated power
Jumper description:
Appendix E: Table 2
Jumper description
Jumper No.
Description
J1
Select matched resistance for 485 terminal
Note:
To prevent communication signal from external interference, communication wire can use twisted pair and
avoid using parallel lines as far as possible;