MCT88M-IO Operating Manual.doc
2019-03-06
7/20
2EOL/NO type
2EOL/NO input can be in normal, triggered, tamper (sabotage) or
malfunction state. In normal state C
A
contacts are opened, while
C
Tamp
contacts are closed. Input triggering is caused by C
A
contacts closing. C
Tamp
contacts opening is recognized as the
tamper (sabotage) state. Input shorting to the ground is recognized
as the malfunction state.
Fig. 9 2EOL/NO input type
2EOL/NC type
2EOL/NC input can be in normal, triggered, tamper (sabotage) or
malfunction state. In normal state C
A
and C
Tamp
contacts are
closed. Input triggering is caused by C
A
contacts opening. C
Tamp
contacts opening is recognized as the tamper (sabotage) state.
Input shorting to the ground is recognized as the malfunction state.
Fig. 10 2EOL/NC input type
3EOL/NO type
3EOL/NO input can be in normal, triggered, masking, triggered with
masking, tamper (sabotage) or malfunction state. In normal state
C
A
and C
B
contacts are opened while C
Tamp
contacts are closed.
Input triggering is caused by C
A
contacts closing. C
B
contacts
closing is recognized as the masking state. Simultaneous closing of
C
A
and C
B
contacts is recognized as the triggered with masking
state. C
Tamp
contacts opening is recognized as the tamper
(sabotage) state. Input shorting to the ground is recognized as the
malfunction state.
Fig.11 3EOL/NO input type
