Table of Contents
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11 Electrical checks of the
main parts
11.1 Inverter
11.1.1 Inverter specifications
Applicable models
Applicable power source
Maximum output voltage
Maximum output current
Control method
Output frequency range
Frequency accuracy
Output / characteristics
Soft start and stop
Protection function:
Excessively high or low inverter voltage
Malfunction in the current sensor
330
SMGB0065 rev. 1 - 12/2010
RAS-8FSXN to RAS-18FSXN
3 phase, 400 V ± 10%, 50 Hz
Vector control PWM (Pulse width modulator)
Conditions:
1. Power source voltage 400 V AC.
2. Without a load (Free output).
(V)
400
380
300
200
100
0
10
The characteristics are fluctuated due to the current minimize control.
0.125 Hz/s, 0.25 Hz/s, 0.5 Hz/s, 1 Hz/s, 3 Hz/s (5 steps)
Excessively low voltage in case the DC voltage is lower than 350 V.
Excessively high voltage in case the DC voltage is higher than 750 V.
Compressor current stoppage lower than 1.5 A
Cause of the malfunction:
•
Sensor current failure.
•
Transistor module failure.
•
Compressor failure.
•
Disconnected wiring.
380 - 415 V
25 A
10 to 115 Hz
0.01 Hz
50
75
100
115
f (Hz)
N O T E
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Table of Contents
Troubleshooting
