IDEC SmartRelay Series, Manual

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IDEC SmartRelay functions
124
IDEC SmartRelay Manual
4.4.4 Retentive on-delay
Short description
A one-shot at the input triggers a configurable on-delay time.
The output is set when this time has expired.
Parameter T
Note the defaults specified in Chapter 4.3.2.
The time for parameter T can be based on the process vari-
able of another, already programmed function. You can use
the process variables 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)
and
• Up/down counter (actual value Cnt, see Chapter 4.4.13).
Symbol in
IDEC Smart
Relay
Wiring Description
Input Trg A signal at input Trg (Trigger)
triggers the on-delay time.
Input R A signal at input R resets the
on-delay time and the output.
Parameter T represents the on-delay
time for the output (output
status transition 0 to 1).
Retentivity:
/ = no retentivity
R = The status is retentive.
Output Q Q is set after the time T has
expired.
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