2k+1, Xor function, Self-hold function – IDEC FS1A Controller User Manual

Page 138: Ossd

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5-97

XOR function

As shown in Fig. 5-20 and 5-21, this function reflects the results of an exclusive logic (XOR)
function processing for multiple inputs (I

n

) in the function output (O

n

).

=2k+1

Fig. 5-20 XOR function circuit

I

1

I

2

I

n

O

n

ON

OFF

ON

OFF

ON

OFF

ON

OFF

Fig. 5-21 Operation timing of XOR function

Self-hold function

As shown in Fig. 5-22 and 5-23, this function is comprised of a hold input (IH

n

), a trigger input (IT

n

),

and a functional output (O

n

), and reflects the results of self-holding processing by the hold input

and trigger input in the output.





Fig. 5-22 Self-holding circuit

IH

n

IT

n

O

n

ON

OFF

ON

OFF

ON

OFF

Fig. 5-23 Operation timing of the self-holding function

Note: When the SafetyOne changes to the Configuration, Protection, or Stop state, the

self-holding function is canceled.

IH

n

IT

n

O

O

I

1

I

2

I

n

...

Hold

EDM

OSSD

with

Off delay

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