TB MRI(K)3-C 03.02 E
45
5.11.5
Description of the digital input
function
RE = Reset (Display and relay)
With this function the relay and the display indication
are reset to normal mode. The relay shows |SEG. Are
output relays set to bistabil mode the also reset.
BL = Protection block / Trip block
All active protection function are blocked during pick up
conditions.
P2 = Change parameterset
When the input is activated the relay change the active
parameter set from Set1 to Set 2.
FR = Ext. Trigger for the disturbance recorder
If this function is allowed it starts the disturbance re-
corder from a external source. During recording the LED
FR lights. If a fault record is being written, the LED FR will
be alight.
t0 = Ext. Trip immediatly.
This function activate direct the trip relay to switch OFF
the CB. Also the alarm relay can be activated. The re-
lays are active as long as the input is active.
t1 = Ext. Trip with time delay.
If this function activated it start a timer with a free setable
delay time. After the timer elapsed the output relay for
trip will activated. Also the alarm relay can work in the
same way. The relays are active as long as the input is
active.
ON = Ext. Switch ON
When this input is activated. The output relay to switch
ON of the CB is activated immediately. The output relay
is activated until the relay indicate via digital input CI
that the CB is ON.
t2 = Trip/Restore
This function fulfil the requirements for a manual switch
ON operation. When a high level at the assigned digi-
tal input take place, the relay trips immediately. When
the digital input is reset to low level a counter starts and
after the settable delay time (0,1s – 300s) the relay
switch ON the CB
CI = CP position indication. - CB ON
With this function the position of the CB is indicated bay
by the relay. Input activated = 1 = CB ON
CO = CB position indication CB OFF
With this function the position of the CB is indicated bay
by the relay. Input activated = 1 = CB OFF
Remark:
When both function are assign to a digital input, the
position of the CB are indicated only when die CB posi-
tion is absolute clear. ( Exp. CI =1 and CO = = or CI =
0 and CO ) All other indication are wrong and a error
message is shown ( CB??) and the LED CB flashed)
CR = CB ready supervision / CB spring is charged
This function check the spring of the CB. When the
spring is charged the input is activated (CR = 1).
When one of the position function are use this function
must use also otherwise a incorrect indication is possible
and a malfunction during a AR sequence take place.
*AB = AWE block
This function block the AR sequence at each time.
*SY = Synchro Check
With this indication function the dead times tD of the AR
function extended. If this function active, the relay wait-
ing for 150ms for the Synchro check ready message af-
ter the dead time elapsed. When after this time the Syn-
chro Check input is not active, the MRIK3-C interrupt the
AR sequence. The display show “S/E?”. If the Synchro
Check activated within this time the CB ON signal is ac-
tivate immediate.
*Only
MRIK3-C
types.
