LG Electronics 120S user manual Integral timer, Monostable timer

Chapter 5 Power Supply / CPU

3)Integral timer

In general, its operation is same as on-delay timer. Only the difference is the current value will not be clear when the input condition of TMR instruction is turned off. It keeps the elapsed value and restart to increase when the input condition is turned on again. When the current value reaches preset value, the timer output relay is turned on.

The current value can be cleared by the RST instruction only.

Timer input condition
t0	t1	t2	t4	t5
Timer output relay
Preset value			PT = (t1-t0)+(t3-t2)
Current value		t2	t3
t0	t1			t5	t5+PT
Timer reset input

4)Monostable timer

In general, its operation is same as off-delay timer. However, the change of input condition is ignored while the timer is operating (decreasing). When current value reaches preset value the timer output relay is turned off and current value is cleared.

Timer input condition
t0	t1	t2	t3	t4
Timer output relay
t0	t0+PT	t2	t2+PT	t4	t4+PT
Preset value
Current value
t0	t1	t2		t4

5-10