PCC-IV Instruction Manual (Rev. 0.1)
Page 6-47
Section 6
– Blockware Functions
Technical Reference
F120 [INTTDR] Interval Time Delay Relay (Non-Retriggerable One Shot)
Function
INTTDR
simulates a "Interval" Time Delay Relay,
also known as an "Non-Retriggerable One Shot" function.
The Output may be inverted (see Parameter 2). The timing
diagram shows the default, non-inverted logic.
For non-Inverted Output: When the
INTTDR
Output is "0",
the timer is reset to (Parameter 1) seconds. When the
INTTDR
Input changes from a "0" in the previous scan to
a "1" in the current scan, the timer starts counting down,
and the Output changes to "1". When the Timer counts
down to 0, the Output changes to "0". While the timer is
counting down, the Input is ignored and has no effect on
the timer or Output.
If the Delay Seconds is set to 0 seconds, the
INTTDR
Output will be "1" for exactly one scan.
---------------------------------------------------------------------------------------------
NAME: INTTDR SINGLE USE FUNCTION: N OUTPUT TYPE: D
---------------------------------------------------------------------------------------------
Input Type Description Notes
_____________________________________________________________________________________________
1 D INPUT 1
Parameter Description Default Max Min Code Notes
_____________________________________________________________________________________________
1 SECONDS DELAY (0=1 SCAN) 1 19999 0 2 2
2 INVERT OUTPUT 0=NO 1=YES 0 1 0 2
Notes:
1. An Input transition from 0 to 1 starts the timing sequence.
2. Delay Seconds = 0 means the Output will go active for exactly one scan and then return to
the inactive Output state.
F121 [DAE/DAD] Delay After Energize / Delay After De-energize Timer
Function
DAE/DAD
combines
DAETDR
(F118) and
DADTDR
(F119) into a single function.
DAE/DAD
behaves as though the
Output of a
DAETDR
Block was the Input to a
DADTDR
Block.
DAE/DAD
provides an initial ON Delay, and then provides an
OFF Delay when the Input returns to "0". The Output may be
inverted, see Parameter 3. The timing diagram shows the
default, non-inverted logic.
For non-Inverted Output: When the
DAE/DAD
Output is "0"
AND the Input is "0": the ON and OFF timers are reset to
(Parameter 1) and (Parameter 2) seconds, respectively. When
the Input = "1", the ON Delay timer starts counting down, and
the Output changes to "1" when the ON Delay timer counts
down to 0 seconds.
When the
DAE/DAD
Output is "1", and the Input changes from "1" to "0", the OFF Delay timer starts counting down,
and the Output changes to "0" when the timer counts down to 0 seconds. If the Input changes back to "1" while the
Output is still "1", the OFF Delay timer is reset.
0
5
10
15
20
25
30
35
0
5
10
15
20
In
p
u
t
O
u
tp
u
t
Seconds
INTTDR 3 sec. ON Interval
0
5
10
15
20
25
30
35
0
5
10
15
20
In
p
u
t
O
u
tp
u
t
Seconds
DAEDAD 2 sec. ON, 4 sec OFF Delay
