I'm planning to fit a VSD to my newly acquired Viceroy TDS1; do VSDs need to be matched to the motor power exactly, or will a bit under or over be OK? Wiring these things up holds no fear for me, but I've no idea about matching requirements. And if I ever get enough round tuits together, I might eventually cobble together a DRO; will a VSD make life more difficult?
cheers, David
A VFD with greater or equal power than the motor is quite OK, but the other way round is problematic. Induction motors only draw their maximum power when under full load; an idling motor draws much less power. If, for example, you have a 2hp (1.5Kw) motor, but never ask more than 1hp of it, then you could probably use a smaller VFD and accept the overload cut-outs that will occur from time to time. I wouldn't like to run it like that, though.
PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.