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casey

Controlling a VFD via PLC

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I am wanting to control a VFD with a Micrologix 1500. Is there any tricks to establishing the link and addressing the parameters in the plc?

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You mentioned the PLC, now specify the VFD

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In addition I would want to know how you are intending to control the VFD. You mention a 1500. With that platform I would assume that one would control the VFD via analog outputs and discrete ins/outs. Your post seems to indicate wanting to use some type of communication method. If so what do you intend?

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We have controlled MODBUS capable drives using a 1500. But we need information.

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Hi Casey, I have never used ML1500 but did similar project with ML1100. Perhaps you could look at my post in the General section: http://forums.mrplc.com/index.php?showtopic=15892 The post was intended as a quick start guide. the PLC is ML1100 and the VFD- Delta, but perhaps the idea is the same and I think AB's PowerFlex VFDs are almost identical. Modbus is Modbus. Regards, Atanas

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