English
52
C53000-B1174-C151-1
q
LED3, RxD
The yellow LED “RxD” signals the received data (optical fibre –R), that comes from the
protection device and is to be transmitted to the mains interface.
q
LED4, Power On
The green LED “Power On” signals the activated auxiliary voltage.
q
Push button
The push button initiates a reset.
Also LEDs 1-3 are activated for the period during which the pushbutton is actuated, and
the DR relay is deactivated if it was activated. This makes possible a functional check of
these signalling elements.
The LED states during putting into operation are shown in the following six steps (for the
structure, see Figure 20).
Here, “ * ” means any undefined LED state (MAKE / BREAK / FLASHING).
Preconditions for putting into operation:
The jumper positions must correspond to the required operating mode / baud rate in both
CC–S
0
(CC–S
0
1, CC–S
0
2).
Step 1 CC–S
0
1 is in the Power On state and the opposite terminal CC–S
0
2 is in the Power Off state
CC–S
0
1
CC–S
0
2
LED1
MAKE
LED1
BREAK
LED2
*
LED2
BREAK
LED3
*
LED3
BREAK
LED4
MAKE
LED4
BREAK
Step 2 Apply the interface (X.21 / G703) on CC–S
0
1
CC–S
0
1
CC–S
0
2
LED1
BREAK
LED1
BREAK
LED2
*
LED2
BREAK
LED3
*
LED3
BREAK
LED4
MAKE
LED4
BREAK
