Thread: VFD for old 3-phase motors

Hey, I have taken everyone's advice and am going down the VFD route for my old bandsaws mainly due to:

• Replacing with a single phase means I would likely need to buy a motor pulley to match the shaft size (19mm) that is common to 3HP single phase motors - so total cost would exceed roughly $220 - $240.
• A VFD will allow to retain original motor and therefore pulley
• A VFD will allow to set slow start-up of what ever I configure

Any other advantages you can think of?

When I scratched the surface with buying a VFD some time ago for my then 3-Phase Dyco Table Saw I was told I need very little information to configure the VFD example:

1. Motor Rated Voltage	415v
2. Motor Rated current (Amps/FLA/FLC) at given voltage to be wired	FLC: 6.9A
3. Motor rated RPM ( Number of Poles)	2 Poles (2810 RPM)
4. Cycles (HZ) a.k.a. Frequency; 60HZ or 50HZ dependent upon design.	50Hz
5. Power – KW	2.2HP / 1.65KW

• The above said does anyone see any issues with this VFD from Conon: 2.2kw/3HP Three Phase Variable Frequency Drive compact Inverter VSD VFD ?
• They talk about hooking up two motors to the VFD a I understand it (https://cononmotor.com.au/wp-content...0-Brochure.pdf)
  
  • Do both the motors need to be identical with identical stats and config?

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The motors are as below:

Motor	HP	Phase	Volts	AMPS	RPM	Cycles (Hz)	RATING
Crompton (Crescent Bandsaw)	2.75	3	400/440	5	940	50	CONT
K. L. Electric Co. (McPherson Bandsaw)	3	3	415	4.3	1425	50	CONT
Crompton (L.S. Barker Bandsaw)	5	3	400/440	7.4	1440	50	?

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