Rockwell Automation 1760-xxxx Pico Controller User Manual - Manual (Page 86)

Publication 1760-UM001D-EN-P - September 2005
4-26 Draw a Circuit Diagram with Pico
Timing Relays Pico provides sixteen different timing relays, T1 to T16.
A timing relay is used to change the switching duration and the make
and break times of a relay contact. The possible delay times range
between 2 ms and 100 hours. You can use positive values, values of
analog inputs, and actual values of counter relays and timing relays.
You integrate a timing relay into your circuit in the form of a contact
and coil.
IMPORTANT
The timing relays of Pico Series B controllers
function in the same way as the timing relays of Pico
Series A controllers.
The one exception is the ’flash’ function. Pico Series
B starts with the pulse. In Series A controllers the
’flash’ function starts with the pause. If required, the
same timing relays can also be used for retentive
data.
Contact Coil
T1 to T16 Contact of a timing relay
TT1 to TT16 Enable, timing relay trigger
RT1 to RT16 Reset coil of the timing relay
HT1 to HT16 Stop coil of the timing relay (H=Stop, S means the Set
coil function
IMPORTANT
To prevent unpredictable switching states, use each
coil of a relay only once in the circuit diagram.
I5-I4-------TT1
T1----------{Q3