IDEC SmartRelay functions
4.4 Special functions list - SF
IDEC SmartRelay Manual
148
4.4.8 Random generator
Short description
The random generator function sets an output randomly within a configured time.
Parameter T
H
and T
L
Note the defaults of the T
H
and T
L
parameters listed in topic Time response (Page 124).
The actual value of another already-programmed function can provide the on-delay time TH
and the off-delay time TL. ou can use the actual values of the following functions:
Analog comparator (Page 183) (actual value Ax Ay)
Analog trigger (Page 178)(actual value Ax)
Analog amplifier (Page 191) (actual value Ax)
Analog multiplexer (Page 209) (actual value A)
Analog ramp control (Page 212) (actual value A)
Analog Math (Page 224) (actual value A)
PI controller (Page 216) (actual value A)
Up/down counter (Page 168) (actual value Cnt)
Analog filter (Page 229) (actual value A)
Average value (Page 235) (actual value A)
Max/Min (Page 231) (actual value A)
On-delay (Page 132) (current time Ta)
Off-delay (Page 136) (current time Ta)
On-/off-delay (Page 138) (current time Ta)
Retentive on-delay (Page 140) (current time Ta)
Symbol in
IDEC SmartRelay
iring Description
Input En A positive edge ( 0 to 1 transition) at input En (Enable)
triggers the on-delay time of the random generator.
A negative edge ( 1 to 0 transition) at input En
(Enable) triggers the off-delay time of the random
generator.
Parameter IDEC SmartRelay sets the on-delay at random to a
value between 0 s and T
H
.
The off-delay is set at random to a value between 0 s
and T
L
.
Output IDEC SmartRelay sets output when the on-delay
expires and if En is still set. IDEC SmartRelay resets
when the off-delay expires, provided IDEC
SmartRelay has not set En again meanwhile.
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