Connecting A Noise Filter - YASKAWA L1000V Technical Manual

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Connecting an AC Reactor
Figure 8.4
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Connecting a DC Reactor
When installing a DC reactor, remove the jumper between terminals +1 and +2 (terminals are jumpered for shipment).
The jumper must be installed if not using a DC reactor. Refer to
Figure 8.5
u Connecting a Noise Filter
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Reducing Radiated, Conducted, and Induced Noise
Drives generate noise that can potentially affect surrounding devices like PLCs, etc.
• Radiated Noise: Electromagnetic waves noise throughout the radio bandwidth radiated from the drive and cables.
• Conducted Noise: Noise generated by the drive and emitted to through the power lines.
• Induced Noise: Noise generated by electromagnetic induction can affect control signal lines.
Take the following measurements to prevent noise causing malfunction of other drives or devices:
• Install all components on a well grounded metal plate.
• Keep the motor cable as short as possible.
• Use noise filters on the input side of the drive to reduce conducted noise.
• Install noise filters on the input and output side of the drive, install the drive in a metal enclosure panel and use a
shielded motor cable to reduce radiated noise.
• Use shielded motor and control circuit lines and lay control circuit lines at least 30 cm away from power lines in order
to prevent malfunction due to induced noise.
YASKAWA EUROPE SIEP
A B
A – Power supply
B – MCCB
Figure 8.4 Connecting an AC Reactor
A
A – Power supply
B – MCCB
Figure 8.5 Connecting a DC Reactor
YASKAWA AC Drive L1000V Technical Manual
8.4 Installing Peripheral Devices
C D
U X R/L1
V Y S/L2
W Z T/L3
C – AC reactor
D – Drive
Figure 8.5 for an example of DC reactor wiring.
C
B
R/L1
S/L2
T/L3
+ 1 + 2
Commo
n_
TMonly
D
C – Drive
D – DC Reactor
Commo
n_
TMonly
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