Remote Inquiry Kit R7Ap - ABB ETL600 Instruction Manual

ABB Switzerland Ltd
6.6.3.5.

Remote inquiry kit R7AP

The remote inquiry kit R7AP allows to connect RS-232 ports to an RS-
485 station bus, for element management networking as described in
Chapter 4 ' User Interface Program '. While ETL600 has its RS-485
bus signals available at the HMI connector on the frontplate of P4LT,
ETL500 requires R7AP for conversion of RS-232 to RS-485 interface
signals. The R7AP base plate can be mounted in a standard 19 inch
frame. If used for ETL500, the plate is mounted directly below the
channel rack P7LC, and the special 9 pole serial cable V9KH –
included in the kit – has to be inserted between ports COM1 of P4LQ
and COM N located on the frontplate of the remote inquiry kit. The
RS-485 bus is formed by connecting all TD(A) wires, all TD(B) wires
and all GND wires at the KRONE connection strip of all R7AP in a
substation together. To minimize reflections, a linear network structure
should be formed instead of a star structure as shown in Fig. 6-22.
ETL500
ETL600
R3
Remote
inq. kit
4
4
Fig. 6-22
6-28
1KHW001489-EN
PC with
ETL600
HMI600
Remote
inq. kit
4
Connections for an RS-485 station bus
November 2005
ETL500
ETL600
R3
Remote
inq. kit
4
4
Assembly and Installation
ETL600
PC with
ETL600
HMI600
Remote
inq. kit
4