Applying Drives to Single-phase
Input Application
12.4 Wiring
Please connect single-phase input to R(L1) and T(L3).
Figure-3 Terminal Wiring Diagram
12.5 Precautions for 1–phase input to 3-phase drive
• Please connect single-phase input to R(L1) and T(L3).
• AC or DC reactor is necessary to reduce DC ripple. Please select built-in reactor type
for 37~90kW. For 0.75~30kW, external AC or DC reactor should be installed.
• Same peripheral devices (including a fuse and reactor) as 3 phases can be used for
single phase as well.
• If phase open trip occurs, please turn off the input phase open protection(PRT-05).
• Protection for output current like OCT or IOLT is based on 3-phase input ratings which
is larger than single-phase input. User should set the parameters that are relative to
motor information(BAS-11~16), overload trip(PRT-17~22) and E-thermal
functions(PRT-40~43).
•
The minimum input voltage must be larger than 228Vac for 240Vac supply and 456Vac for
480Vac supply to ensure motor voltage production of 207Vac and 415Vac, respectively.
• To minimize the effect of voltage deprivation, please choose 208Vac motor for 240Vac
supply and 400Vac motor for 480Vac supply.
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