ABB UMC100.3 Manual page 38

38 C U S T O M A P P L I C AT I O N E D I T O R M A N U A L
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Function block reference
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TOF (Timer, Switch-Off Delay)
The function block TOF implements a turn-off delay.
Function Block
Inputs
Output
Parameters
—
Max / Min
The greatest / smallest respective input value is passed on to the output.
Function Block
Inputs (from top to bottom)
Output
Parameters
IN
Q
ET
Signal Name
IN and PT are input variables type BOOL respectively TIME. If IN is logical 1, the outputs
are logical 1 respectively logical 0. As soon as IN becomes logical 0, at ET the time will
begin to be counted in multiples of 100ms until its value is equal to PT. It will then remain
constant.
t#1H15M22S 1 hour, 15 minutes, 22 seconds
t#1H 1hour
t#10s500ms 10.5 seconds
Internally the delay time is represented as multiples of 100ms. The
max. possible delay time is 1h49m13s500ms.
If PT is left open the delay time is set to zero.
In online mode the output ET (W) shows the remaining delay time in
multiples of 100ms.
Q is logical 0 when IN is logical 0 and ET equal PT. Otherwise it is logical 1.
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Signal Name
In1 (W): Analogue input 1
In2 (W): Analogue input 2
In3 (W): Analogue input 3
Max (W) / Min (W): The greatest or the smallest of the three inputs.
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t2+PT
t1 t2 t3 t4
t6+PT
t5 t6
Data Type
Boolean, Time
Boolean, Time
Data Type
Word
Word
Word
Word