Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 254)

Publication 1760-UM002B-EN-P - March 2005
4-144 Wiring with Pico GFX-70
Figure 4.66 Signal diagram of timing relay, on-delayed
(with and without random switching)
1: trigger coil T..EN
2: stop coil T..ST
3: reset coil T..RE
4: switching contact (make contact) T..Q1
t
s
: setpoint time
• Range A:
The set time elapses normally.
• Range B:
The entered setpoint does not elapse normally because the trigger coil drops out prematurely.
• Range C:
The Stop coil stops the time from elapsing.
t
1
+ t
2
= t
s
t
A B
t
s
1
2
4
3
C