User manual

Publication 1760-UM001A-EN-P
Retention 7-11
Off-Delayed, Off-Delayed Switching with Random Time Range, Retentive
Ta s k:
No-load running of a conveyor belt. (Same as previous example except
implemented using an off-delay timer)
Contacts and relays used:
I2 and I3 are converted to one-shot pulses by T6/T7. Only the actuation of the
push-button is recognized. In the above example, T7 does not have to be retentive.
Signal diagram:
U = Supply voltage
Coil Function
T6/T7 Single pulse
I2 Start conveyor belt
Q1 Conveyor belt motor
I3 Stop conveyor belt
M16 Stop selected
T8 Remaining time
I2---------TT6
T6-T8------SQ1
M16
I3---------TT7
T7--------SM16
M16---------TT8
T8---------RQ1
RM16
30.00
TRG
RES
S
{
T8
+
Circuit Diagram: Parameters Entered:
Time setting for T6, T7
00.00 s
U
I2/T6
Q1
I3
M16
t
1
t
2
T8
t +
1
t = 30 s
2