Homemade Skip Band?
Homemade Skip Band?
(OP)
Greetings all,
I have a VFD application that uses a 0-10VDC signal for reference, and the VFD doesn't have a skip band option. Problem is, I need one, and would prefer to do this without replacing several, SEVERAL, drives.
If my skip band requirement is only in the 5-10Hz range, is there a work around?
I have a VFD application that uses a 0-10VDC signal for reference, and the VFD doesn't have a skip band option. Problem is, I need one, and would prefer to do this without replacing several, SEVERAL, drives.
If my skip band requirement is only in the 5-10Hz range, is there a work around?





RE: Homemade Skip Band?
RE: Homemade Skip Band?
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: Homemade Skip Band?
RE: Homemade Skip Band?
If you want the motor to run at 5 Hz when the command is +5 and -10Hz, then you will need the VFD to have a jog feature that has it run at a pre-programmed speed when an input is closed. If this is the case, then just have the setpoint relay put the VFD in Jog mode during the dead band range instead of turning it off.
Here is an example of a setpoint relay you could use.
Action Instruments setpoint relay link
JRaef.com
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