Hitachi SJ7002 Series Instruction Manual page 384

D–6
Precautions for EMC, Models SJ700-1850 to -4000
Models
SJ700-1850HFU2/HFE2
SJ700-3150HFU2/HFE2
SJ700-4000HFU2/HFE2
✔ = Installation
✘ = No installation
3. Wiring requirements
a. Shielded wire (screened cable) is required for motor wiring but is not required for direct
reactor wiring. And, the length of the cable must be according to the following table.
b. The carrier frequency setting must be less than 3 kHz (derated is required) to meet an
EMC requirement.
c. The main circuit wiring must be separated from the control circuit wiring.
4. Environmental requirements (to be met when a filter is used)
a. Ambient temperature must be within the range –10°C to 40°C.
b. Relative humidity must be within the range 20% to 90% (non-condensing).
c. Vibrations must be 1.96 m/sec
d. The inverter must be installed indoors (not exposed to corrosive gas and dust) at an
altitude of 1,000 m or less.
Models
SJ700-1850HFU2/HFE2
SJ700-3150HFU2/HFE2
SJ700-4000HFU2/HFE2
Category C2
Ferrite Ferrite
Filter
Core 1 Core 2
✔ ✔ ✘
✔ ✘ ✘
✔ ✔ ✘
2
(0.2 G) (10 to 55Hz) or less.
Cable length (m)
to motor to DC reactor
5 5
10 5
10 5
Category C3
Ferrite Ferrite
Filter
Core 1 Core 2
✘ ✘ ✘
✘ ✘ ✘
✘ ✘ ✘