Rockwell-automation MD65 User Manual Version 2.0 Manual do Utilizador descarregar pdf (Página 165)

StepLogicTM, Basic Logic and Timer/Counter Functions

H-5

• Digital In1 Sel (A051) = 4 “Preset Freq”

– Digital In2 Sel (A052) = 18 “Timer Start”

– Relay Out Sel (A055) = 16 “Timer Out”

– Relay Out Level (A056) = 20.0 Sec

– Preset Freq 1 (A071) = 30.0 Hz

• The control terminal block is wired such that a start command

will also trigger the timer start.

• The relay output is wired to I/O Terminal 05 (Digital Input 1) so

that it forces the input on when the timer starts.

• After the timer is complete, the output is turned off releasing the

preset speed command. The drive defaults to following the

analog input reference as programmed.

Note that a “Reset Timer” input is not required for this example

since the “Timer Start” input both clears and starts the timer.

ital In

Reset

ounte

Limit

witc

ital In

ounter I

Photo E

tar

Out

Frequenc

Rela

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Rockwell-automation MD65 User Manual Version 2.0 Manual do Utilizador Página 165