Datasensing SH4 STANDARD MUTING - Level Trigger; Edge Trigger

OVERRIDE
PRODUCT REFERENCE GUIDE 55
Then, an override request is accepted only if signals at OVERRIDE inputs follow the tim-
ings shown below.
Two types of override trigger sequence are accepted on external inputs:
• “Level Trigger” on page 55
• “Edge Trigger” on page 55
Level Trigger
Level Trigger: override engaged until both contacts are closed AND at least one muting
sensor is intercepted (high input).
Figure 44: Level Triggered Override Timings
Edge Trigger
Edge Trigger: override engaged on contacts closing until at least one muting sensor is
intercepted.
Figure 45: Edge Triggered Override Timings
24Vdc
Open
Open
0Vdc
TRUE
FALSE
ON
OFF
OVERRIDE STATE
MUTING1 or
MUTING2
OVERRIDE 2
OVERRIDE 1
t < 400ms
t < 400ms
t < T
out
24Vdc
0Vdc
24Vdc
0Vdc
TRUE
FALSE
ON
OFF
OVERRIDE STATE
MUTING1 or
MUTING2
OVERRIDE 2
OVERRIDE 1
t < 400ms
t < T
out