ABB Relion 620 Series, Technical Manual

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3.17.4 Time delay off (8 pcs) TOFGAPC
3.17.4.1 Function block
Figure 94: Function block
3.17.4.2 Functionality
The time delay off (8 pcs) function TOFGAPC can be used, for example, for a
dropoff-delayed output related to the input signal. The function contains eight
independent timers. There is a settable delay in the timer. Once the input is
activated, the output is set immediately. When the input is cleared, the output stays
on until the time set with the
Off delay time setting has elapsed.
t
0
t
1
+dt t
2
t
3
t
5
+dt
dt = Off delay time
t
1
t
4
t
5
Figure 95: Timer operation
3.17.4.3 Signals
Table 158: TOFGAPC Input signals
Name Type Default Description
IN1 BOOLEAN 0=False Input 1 status
IN2 BOOLEAN 0=False Input 2 status
IN3 BOOLEAN 0=False Input 3 status
IN4 BOOLEAN 0=False Input 4 status
IN5 BOOLEAN 0=False Input 5 status
IN6 BOOLEAN 0=False Input 6 status
IN7 BOOLEAN 0=False Input 7 status
IN8 BOOLEAN 0=False Input 8 status
1MRS757644 H Basic functions
620 series
Technical Manual
171