Thanks in advance for any help..
We just built a new machine utilizing a Delta SS PLC. There is an arm on a chain that is being pulled by a 3/4 HP DC motor. connected to the shaft is a 60 pulse encoder with a 6:1 gear ratio. every rotation of the shaft takes 3 seconds and generates 360 pulses.
When the high speed counter on the Delta reaches the setpoint, the motor/arm is supposed to stop. but we are having horrible inconsistency with the stopping point.
the motor is connected to a pot and when the speed of the motor is increased the counter is even more inconsistent.
example:
motor speed @ 50% - 400 pulses = 24" of travel
motor speed @ 75% - 400 pulses = 40" of travel
i can only assume that our high speed counter is not seeing all the pulses of the encoder. but i'm open to suggestions!
any help anyone can give is greatly appreciated!
We just built a new machine utilizing a Delta SS PLC. There is an arm on a chain that is being pulled by a 3/4 HP DC motor. connected to the shaft is a 60 pulse encoder with a 6:1 gear ratio. every rotation of the shaft takes 3 seconds and generates 360 pulses.
When the high speed counter on the Delta reaches the setpoint, the motor/arm is supposed to stop. but we are having horrible inconsistency with the stopping point.
the motor is connected to a pot and when the speed of the motor is increased the counter is even more inconsistent.
example:
motor speed @ 50% - 400 pulses = 24" of travel
motor speed @ 75% - 400 pulses = 40" of travel
i can only assume that our high speed counter is not seeing all the pulses of the encoder. but i'm open to suggestions!
any help anyone can give is greatly appreciated!