Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Manual do Utilizador descarregar pdf (Página 145)

Publication 1760-UM002B-EN-P - March 2005

Wiring with Pico GFX-70 4-35

A coil is automatically switched off if the power fails and if STOP mode is

active. Exception: Retentive coils retain signal 1 (see Retention on page 7-22).

“Set” S and “Reset” R Coil Function

The “Set” S and “Reset” R coil functions are normally used in pairs.

The relay picks up when the coil is set (A) and remains in this state until it is

reset (B) by the coil function.

The supply voltage is switched off (C), the coil does not have a retentive effect.

Figure 4.20 Signal diagram of “Set” and “Reset”

If both coils are triggered at the same time, priority is given to the coil in the

circuit diagram with the higher circuit connection number. This is shown in

the above signal diagram in section B.

Figure 4.21 Simultaneous triggering of Q 01

In the example above, the reset coil has priority with simultaneous triggering

of the set and reset coils.

on

on

S

R

on

AB C

I 05---------------------------S Q 01

I 10---------------------------R Q 01

1 2 ... 140 141 142 143 144 145 146 147 148 149 150 ... 399 400

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