IDEC SmartRelay functions
IDEC SmartRelay Manual 132
4.4.1 On-delay
Short description
The output is only set after a configurable on-delay time has 
expired.
Parameter T
Please note the defaults for parameter T in Chapter 4.3.2.
The time for parameter T can also be preset based on the 
actual value of another, already configured function. You can 
use the actual values of the following functions: 
• Analog comparator (actual value Ax - Ay, see Chapter 
4.4.18)
• Analog trigger (actual value Ax, see Chapter 4.4.16)
• Analog amplifier (actual value Ax, see Chapter 4.4.20)
• Analog multiplexer (actual value AQ, see Chapter 4.4.26)
• Analog Ramp Control (actual value AQ, see Chapter 
4.4.27)
• PI controller (actual value AQ, see Chapter 4.4.28)
and
• Counter (actual value Cnt, see Chapter 4.4.13).
Select the required function by means of the block number. 
The timebase is adjustable. Please note the following listing:
Symbol in IDEC 
SmartRelay
Wiring Description
Input Trg You start the on-delay with a 
negative edge (1 to 0 transition) 
at input Trg (Trigger).
Parameter T represents the time after which 
the output is switched on (0 to 1 
transition of the output signal).
Retentivity:  
/ = no retentivity 
R = the status is retentive.
Output Q Q is switched on when the set 
time T has expired, provided Trg 
is still set.
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