Carrier Frequency - Hitachi SJ200 Series Instruction Manual

1–6
SJ200 Inverter Specifications
Footnotes for the preceding table and the tables that follow:
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10: If the inverter is operated outside the region shown in the graph below, the
Note 11: The storage temperature refers to the short-term temperature during transport.
Note 12: Conforms to the test method specified in JIS C0040 (1999). For the model
The protection method conforms to JEM 1030.
The applicable motor refers to Hitachi standard 3-phase motor (4-pole). When
using other motors, care must be taken to prevent the rated motor current (50/
60 Hz) from exceeding the rated output current of the inverter.
The output voltage decreases as the main supply voltage decreases (except
when using the AVR function). In any case, the output voltage cannot exceed
the input power supply voltage.
To operate the motor beyond 50/60 Hz, consult the motor manufacturer for
the maximum allowable rotation speed.
When using the inverter with 3-phase power input, remove the single phase
filter and install a 3-phase filter with the appropriate ratings.
For achieving approved input voltage rating categories:
• 460 to 480 VAC – Over-voltage Category 2
• 380 to 460 VAC– Over-voltage Category 3
To meet the Over-voltage Category 3, insert an EN or IEC standard compliant
isolation transformer that is earth grounded and star connected (for Low
Voltage Directive).
At the rated voltage when using a Hitachi standard 3-phase, 4-pole motor
(when selecting intelligent sensorless vector control—iSLV).
The braking torque via capacitive feedback is the average deceleration torque
at the shortest deceleration (stopping from 50/60 Hz as indicated). It is not
continuous regenerative braking torque. The average deceleration torque
varies with motor loss. This value decreases when operating beyond 50 Hz. If
a large regenerative torque is required, the optional regenerative braking
resistor should be used.
The frequency command is the maximum frequency at 9.8V for input voltage
0 to 10 VDC, or at 19.6 mA for input current 4 to 20 mA. If this characteristic
is not satisfactory for your application, contact your Hitachi sales representa-
tive.
inverter may be damaged or its service life may be shortened. Set B083
Carrier Frequency Adjustment in accordance with the expected output current
level.
Rated
100%
current
70%
0
types excluded in the standard specifications, contact your Hitachi sales
representative.
Derating Curve
Operating region
5.0 14.0

Carrier frequency

Curve at 40°C
kHz