Built-In Emc Filter - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

Noise propagation
path
(h)
 Data line filter
Data line filter is effective as an EMI countermeasure. Provide a data line filter for the detector cable, etc.
• Commercially available data line filter: ZCAT3035-1330 (by TDK), ESD-SR-250 (by NEC TOKIN)
• Specification example (ZCAT3035-1330 by TDK)
Item
Impedance (Ω)
Outline dimension drawings
(mm)
The impedance values above are reference values, and not guaranteed values.
 EMI countermeasure example
Inverter
power
supply
Do not earth (ground)
enclosure directly.
NOTE
• For compliance with the EU EMC Directive, refer to the Instruction Manual (Startup).
3.1.3

Built-in EMC filter

This inverter is equipped with a built-in EMC filter (capacitive filter) and a common mode choke.
These filters are effective in reducing air-propagated noise on the input side of the inverter.
To enable the EMC filter, fit the EMC filter ON/OFF connector to the ON position. The FM type is initially set to "disabled" (OFF),
and the CA type to "enabled" (ON).
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3. PRECAUTIONS FOR USE OF THE INVERTER
3.1 Electro-magnetic interference (EMI) and leakage currents
When a closed loop circuit is formed by connecting the peripheral device wiring to the inverter, leakage currents may
flow through the earthing (grounding) cable of the inverter to cause the device to malfunction. In that case,
disconnecting the earthing (grounding) cable from the device may stop the malfunction of the device.
10 to 100 MHz
100 to 500 MHz
39 1
34 1
TDK
Product name Lot number
Enclosure
Separate inverter and
power line by more than
30 cm (at least 10 cm)
from sensor circuit.
Control
power
supply
Do not earth (ground) control cable.
Countermeasure
Description
80
150
Cable fixing band
mount
Decrease carrier frequency.
FR-
EMC
Inverter
BLF
filter
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.
Install filter (FR-BLF
or FR-BSF01) on
inverter output side.
M Motor
Sensor