Manual control applications

Question 1

What do you do when a machine has a malfunction?

Answer 1

Switch to manual operation allowing operator to manually operate machine and reset actuator
(some cycles may have to performed manually before resetting the machine)

Question 2

How do you setup a machine in manual mode?

Answer 2

Adjusting the machine by moving it to certain position to perform cycle

Question 3

What is manually controlling a machine called?

Answer 3

Manual operation is called jogging

pushbuttons are jog pushbuttons

Question 4

What is a single jog pushbutton circuit?

Answer 4

A machine that has a single actuator operating in one direction

Question 5

What are guidelines of manual control?

Answer 5

Power solenoids through control relays
Jogging should be done at slowest machine speed for safety
Don’t jog a actuator using manual overrides on the values. You can’t get a clear view and may perform other operations
Use mode lockouts. When a machine is in one mode, other modes should be locked out
Use pushbuttons to jog (could also use a selector switch)