Editing IONI power supply schemes
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! Scheme !! Description !! Pros !! Cons | ! Scheme !! Description !! Pros !! Cons | ||
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− | | [[File:ioni_psu_scheme1p.png|300px]]|| Two switching power supplies, one high power voltage supply for motor and one low power supply for logic circuity. A diode D1 is | + | | [[File:ioni_psu_scheme1p.png|300px]]|| Two switching power supplies, one high power voltage supply for motor and one low power supply for logic circuity. A diode D1 is necessary to protect regenerative current flow going back to PSU1. For recommended diodes, see paragraph below.|| |
*Fault tolerant | *Fault tolerant | ||
+ | *Compact | ||
*Availability of parts | *Availability of parts | ||
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− | * | + | *High power PSU cost when above 200W |
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− | | [[File:ioni_spu_scheme2.png|300px]]|| Two similar high power supplies are used to supply both motor and logic voltages. In this system power of PSU1 and PSU2 will contribute to motor supply, i.e. if both supplies are rated 200W, then total power available to drives is ~400W. Diodes D1 is | + | | [[File:ioni_spu_scheme2.png|300px]]|| Two similar high power supplies are used to supply both motor and logic voltages. In this system power of PSU1 and PSU2 will contribute to motor supply, i.e. if both supplies are rated 200W, then total power available to drives is ~400W. Diodes D1 is needed to protect power supplies from regenerative power and D2/D3 to protect power supplies in the case where one power supply would shut down (i.e. on overload). For recommended diodes, see the paragraph below.|| |
− | *Cost saving (i.e. 2x200W 24V cost | + | *Cost saving (i.e. 2x200W 24V is lower cost than 1x400W 48V) |
+ | *Compact | ||
*Availability of parts | *Availability of parts | ||
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− | *In | + | *In PSU fault/overload, drive logic power may be instabilized |
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| [[File:ioni_psu_linear.png.png|300px]] || Linear (transformer based unregulated) power supply is used for motor supply and low power switching PSU for logic power. || | | [[File:ioni_psu_linear.png.png|300px]] || Linear (transformer based unregulated) power supply is used for motor supply and low power switching PSU for logic power. || | ||
*No need for diodes | *No need for diodes | ||
*Linear PSU peak power handling | *Linear PSU peak power handling | ||
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*Size & weight | *Size & weight | ||
*Lower availability of linear power supplies | *Lower availability of linear power supplies | ||
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*Fairchild RURG3060 (30A 600V, leaded, non-isolated case - cooling tab is either anode or cathode) | *Fairchild RURG3060 (30A 600V, leaded, non-isolated case - cooling tab is either anode or cathode) | ||
*Fairchild STPS20120D (20A 120V, leaded, non-isolated case - cooling tab is either anode or cathode) | *Fairchild STPS20120D (20A 120V, leaded, non-isolated case - cooling tab is either anode or cathode) | ||
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