Editing IONI power supply schemes
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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 normally necessary to protect regenerative current flow going back to PSU1. For recommended diodes, see paragraph below.|| | | [[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 normally 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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*Switching PSUs typically don't allow temporary overloading | *Switching PSUs typically don't allow temporary overloading | ||
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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 normally 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.|| | | [[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 normally 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 less than a 1x400W 48V) | *Cost saving (i.e. 2x200W 24V cost less than a 1x400W 48V) | ||
| + | *Compact | ||
*Availability of parts | *Availability of parts | ||
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*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 | ||
| − | * | + | *Fluctiation of AC mains voltage may trigger overvoltage fault on drives if PSU voltage is normally near drive's maximum |
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{{info|Some switching power supplies can tolerate reversed current flow from drive to PSU (renegerative current). In case of such PSU, D1 may be omitted. If unsure about PSU behavior in regeneration, always add D1.}} | {{info|Some switching power supplies can tolerate reversed current flow from drive to PSU (renegerative current). In case of such PSU, D1 may be omitted. If unsure about PSU behavior in regeneration, always add D1.}} | ||
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