Mitsubishi Electric FR-A820-00046 Instruction Manual page 130

Electro-magnetic interference (EMI) and leakage currents
Data line filter
Data line filter is effective as an EMI countermeasure. Provide a data line filter for the detector cable,
etc.
Example Data line filter: ZCAT3035-1330 (by TDK)
Tab. 3-5:
The impedance values above are reference values, and not guaranteed values.
Fig. 3-5:
EMI countermeasure example
Inverter
power
supply
Control
supply
Fig. 3-6:
NOTE For compliance with the EU EMC Directive, refer to the Installation Guideline.
3 - 8
ESD-SR-250 (by NEC TOKIN)
10 to 100 MHz
80
Impedance (ZCAT3035-1330)
39 1
34 1
TDK
Product name
Outline dimension drawing (ZCAT3035-1330)
Enclosure
EMC filter
Separate inverter and
power line by more than
30 cm (at least 10 c m)
from sensor circuit.
power
Do not earth (ground)
enclosure directly.
Do not earth (ground) control cable.
Noise reduction examples
Impedance (Ω)
Cable fixing band mount
Lot number
Decrease carrier frequency
FR-BLF
Inverter
Use 4-core cable for motor power cable and
use one cable as earth (ground) cable.
Use a twisted pair shielded cable
Power
supply for
sensor
Do not earth (ground) shield but connect it to signal
common cable.
Precautions for use of the inverter
100 to 500 MHz
150
Install filter (FR-BLF, FR-BSF01)
on inverter output side.
M
Motor
3~
Sensor
[Unit: mm]
I002418E
I002419E