8 Electrical checks of main parts
Inverter
SMGB0136 rev.0 - 07/2021
158
8.1.2 RAS-(4-6)H(R/N)(C/P)2E
Applicable power source 3N~ 400V 50Hz
Maximum output voltage 415V (Depends on power source voltage)
Maximum output current 20A
Control method Vector control PWM (Pulse width modulator)
Output frequency range
11Hz to 130Hz
0 to 21.7rps
Frequency accuracy 0.01 Hz
• Check whether the high voltage still exists in the inverter PCB after power is disconnected. When the unit is operated,
LED7 is turned ON. At the time of powering off the unit, LED7 is turned OFF. In this case, the residual voltage is less
than DC50V.
• If LED7 is turned ON while powering off the unit, please wait for about ten minutes, LED7 will turn OFF.
Remove all the terminals of the driver board before check. If all the items (below table) are performed and all items are
satised, the driver board is non-defective.
Check Point
Digital Tester Result
(+) Side of Tester (-) Side of Tester
DCL2 R/S/T Overload
R/S/T DCL2 0.5V or smaller
R/S/T CN28(N) Overload
CN28(N) R/S/T 0.5V or smaller
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