Fuji Electric FRENIC-Ace series - Checking Prior to Powering on

4.2 Checking Prior to Powering On
4-2
4.2 Checking Prior to Powering On
Check the following before powering on the inverter.
(1) Check that the wiring is correct.
Especially check the wiring to the inverter input terminals (L1/R, L2/S, L3/T or L1/L, L2/N) and output terminals
(U, V, and W). Also check that the grounding wires are connected to the grounding terminals ( G) correctly.
See Figure 4.2-1.
• Never connect power supply wires to the inverter output terminals U, V, and W. Doing so and turning the
power ON breaks the inverter.
• Be sure to connect the grounding wires of the inverter and the motor to the ground electrodes.
Otherwise, an electric shock could occur.
(2) Check the control circuit terminals and main circuit terminals for short circuits or ground faults.
(3) Check for loose terminals, connectors and screws.
(4) Check that the motor is separated from mechanical equipment.
(5) Make sure that all switches of devices connected to the inverter are turned OFF. Powering on the inverter with
any of those switches being ON may cause an unexpected motor operation.
(6) Check that safety measures are taken against runaway of the equipment, e.g., a defense to prevent people
from access to the equipment.
(7) Check that a power factor correction DC reactor (DCR) is connected to the DC reactor terminals P1 and P(+).
(ND-mode in case of inverters FRN0139E2■-4 or above, HD-/HND-mode in case of FRN0168E2■-4 or
above, and HHD-mode in case of FRN0203E2■-4 or above must be used with a DCR. Be sure to connect
the DCR to the inverter.)
Figure 4.2-1 Connection of Main Circuit Terminals