Hello,
I am looking to design a simple control system with a few controls and I believe I might be able to control it entirely with an Eaton DG1 drive.
I will have two motors being controlled - one through the VFD lines, and one through the VFD I/O. I will be shutting off a starter through the VFD I/O based on a limit switch.
There is a liquid tank with a digital switch to sense an empty tank condition, and a small motor inside the tank that needs to remain ON for an additional 10 seconds after the empty condition is sensed.
I would like to send a digital input signal from that switch to the drive for the empty signal, and send a relay output with time delay to the coil on the contactor so that the smaller motor remains on for 10 seconds.
I would like to use a normally closed relay after the three wire control on the small motor control circuit. When the signal hits the relay it should open the contactor, and the sealing contact, and then kill off the circuit until the button is pressed again.
Does this make sense? I appreciate the help!
DG1 comes with I. Eight (8), 24VDC digital input as standard
ii. One (1), open collector 24VDC digital output
iii. Two (2) 4 to 20mA analog inputs
iv. Two (2) 4 to 20 mA analog outputs
v. Three (3) dry relay contacts rated for 250VAC at 2A or 250VDC at 0.4mA
I am looking to design a simple control system with a few controls and I believe I might be able to control it entirely with an Eaton DG1 drive.
I will have two motors being controlled - one through the VFD lines, and one through the VFD I/O. I will be shutting off a starter through the VFD I/O based on a limit switch.
There is a liquid tank with a digital switch to sense an empty tank condition, and a small motor inside the tank that needs to remain ON for an additional 10 seconds after the empty condition is sensed.
I would like to send a digital input signal from that switch to the drive for the empty signal, and send a relay output with time delay to the coil on the contactor so that the smaller motor remains on for 10 seconds.
I would like to use a normally closed relay after the three wire control on the small motor control circuit. When the signal hits the relay it should open the contactor, and the sealing contact, and then kill off the circuit until the button is pressed again.
Does this make sense? I appreciate the help!
DG1 comes with I. Eight (8), 24VDC digital input as standard
ii. One (1), open collector 24VDC digital output
iii. Two (2) 4 to 20mA analog inputs
iv. Two (2) 4 to 20 mA analog outputs
v. Three (3) dry relay contacts rated for 250VAC at 2A or 250VDC at 0.4mA