4.4.10 Dual-function switch
Short description
Switch with two different functions:
• Pulse switch with off-delay
• Switch (permanent lighting)
Symbol in IDEC
SmartRelay
Wiring Description
Input Trg A signal at input Trg (Trigger) sets
output Q (permanent light) or resets Q
with an off-delay. When active, output
Q can be reset with a signal at input
Trg.
Input R A signal at input R resets the current
time T
a
and resets the output.
Parameter T represents the off-delay time. The
output is reset (1 to 0 transition) when
time T expires.
T
L
represents the time during which
the output must be set to enable the
permanent light function.
T
!
represents the on-delay for the
prewarning time.
T
!L
represents the length of the
prewarning time period.
Retentivity:
/ = No retentivity
R = The status is retentive.
Output Q A signal at Trg switches on output Q.
Depending on the length of the input at
Trg, the output is switched off again or
switched on permanently, or it is reset
with a further signal at Trg.
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