always active and will delay the input to output transition by the set time. The
ModeOutput for respective output decides whether the output shall be steady with an
drop-off delay as set by OffDelay or if it shall give a pulse with duration set by
PulseTime. Note that for pulsed operation since the inputs are connected in an OR-
function a new pulse will only be given on the output if all related inputs are reset and
then one is activated again. And for steady operation the OffDelay will start when all
related inputs have reset. Detailed logical diagram is shown in figure
80
PulseTime
Output 1
PulseTime
Output 2
PulseTime
Output 3
Input 17
I
n
p
u
t
3
2
Input 1
I
n
p
u
t
1
6
OR
OR
OR
OR
AND
AND
ModeOutput1=Pulsed
OR
OR
t
t
t
AND
AND
AND
AND
AND
On Delay Time 2
0
On Delay Time 1
0
0
On Delay Time 3
Off Delay Time 3
0
Off Delay Time 2
0
Off Delay Time 1
0
ANSI11000290-1-en.vsd
ModeOutput2=Pulsed
ModeOutput3=Pulsed
ANSI11000290 V1 EN
Figure 80: Trip matrix internal logic
Output signals from TMAGGIO are typically connected to other logic blocks or
directly to output contacts in the IED. When used for direct tripping of the circuit
breaker(s) the pulse time delay shall be set to approximately 0.150 seconds in order to
obtain satisfactory minimum duration of the trip pulse to the circuit breaker trip coils.
1MRK 505 277-UUS C Section 11
Logic
193
Technical Manual
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