11 Safety Function
11.3 Safety Logic Circuit
11-51
HW1485509
HW1485509
3. Verifying the safety logic circuit.
When #1 GSIN 1 signal is turned ON, #1 GSOUT 1 is ON for one
second.
11.3.9.4 Example4 (ON Delay)
In the following example, one second after the emergency button of the
pendant (PPESP) is pressed and the GP safety input signal 1 is OFF, the
GP safety output signal1 (#1 GSOUT1) is turned ON.
1. Create the following Safety Logic Circuit.
2. The time chart is as following.
When using the “Detect OFF → ON” or “Detect ON → ON”
instruction, the signal status turns to ON only for 2 ms while
the conditions are satisfied.
Because pendant display update is slower than safety logic
circuit, seeing the changing status in the display is difficult,
or it may be displayed longer than the actual ON time.
PPESP
#1 GSIN1
#1
GSOUT1
PPESPpress
NOT
#1 GSIN1
OFF(release)
ON(press)
OFF
ON
OFF
ON
OFF
ON
TM1 ON
DELAY
0
GSIN1㸸OFF
NOT GSIN1㸸ON
Setting Value
TIMER: start
TIMER: reaching the specified value
PPESP is ON and NOT #1 GSIN1 is ON, and
ON DELAY TIM1 reaches the specified value
so that #1 GSOUT1 is ON
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