Teleoperation; Ports - ABB ETL600 Instruction Manual

ABB Switzerland Ltd
Local Equipment
Req
M-Wire
Ack
E-Wire
RDY-LED
OP-Phone
RDY-LED
Fig. 3-32
By watching the LEDs, it is easy to see whether a remote PAX is
working or not. If the remote PAX is not answering, the upper LED
'RDY' won't flash. This is shown in Fig. 3-33.
Local Equipment
Req
M-Wire
E-Wire
RDY-LED
OP-Phone
RDY-LED
Fig. 3-33
3.4.2.

Teleoperation

3.4.2.1.

Ports

Three galvanically isolated teleoperation 4-wire ports AF2, AF3 and
AF4 are provided on each O4LE board. A fourth port AF1 is available if
no 4-wire telephony is configured. Each port consists of an input and
an output port with an impedance of 600 Ohms. The frequency range
of the ports is between 300 and 4000 Hz. Signals within this frequency
range are transmitted transparently over the link. Each output port can
be squelched individually during periods of excessive line noise. Each
port can be connected individually to either one of two AF-channels.
Each port may be used either in mode 'disconnectable' or mode 'non-
disconnectable':
•
In mode 'disconnectable', the signal applied to the input port is
suppressed during the transmission of teleprotection command
signals. This allows to assign more power to the teleprotection
signal during command transmission.
•
In mode 'non-disconnectable', the signal applied to the input port
is not suppressed during the transmission of teleprotection
command signals. This mode has to be chosen when the short
3-42
1KHW001489-EN
Digit "1"
Digit "2"
State of LEDs corresponding to internal E&M
Digit "2" Digit "1"
State of LEDs showing to internal E&M when one PAX
is not working correctly
November 2005
Conversation
ReleaseReq
ReleaseAck
ReleaseReq
Structure and Function
ETL600
Remote Equipment
E-Wire
M-Wire
RDY-LED
OP-Phone
RDY-LED
Remote Equipment
M-Wire
E-Wire
RDY-LED
OP-Phone
RDY-LED