KCEG142 Ver la hoja de datos (PDF) - Unspecified

Número de pieza

componentes Descripción

Fabricante

KCEG142

Overcurrent Protection

Unspecified 

It should be noted that protection

tripping and blocking signals are not

routed via the K-Bus. Separate

conventional cabling is used for this

purpose; where appropriate the

isolated 48V dc supply available on

each relay is used to energise the

optically-isolated inputs.

Relay 32 Relay 4

Relay 3

Relay 2

Relay 1

Communications protocol

The communications protocol used

with K Range relays is designated

Courier. The Courier language has

been developed specifically for the

purpose of developing generic PC

programs that will, without

modification, communicate with any

device using the Courier language.

In the Courier system, all information

resides within the relay. Each time

communication is established with the

relay, the requested information is

loaded to the PC. The protocol

includes extensive error checking

routines to ensure the system remains

reliable and secure.

Figure 4: Basic communication system

Protocol

converter

RS232

KITZ

K-Bus

Desktop

computer

PC

Password protection

Password protection is provided on

settings which alter the configuration

of the relay, any accidental change to

which could seriously affect the ability

of the relay to perform its intended

function, ie. enable/disable settings,

protection function characteristic

selection, scheme logic settings and

system VT and CT ratios.

K bus screened

2 core cable

Figure 5: Typical communications terminal arrangement

6

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