Connecting A Noise Filter - YASKAWA A1000 Technical Manual

8.5 Installing Peripheral Devices

Connecting a DC Reactor
A DC reactor can be installed to drive models CIMR-A2A0004 to 0081 and 4A0002 to 0044. When installing a DC
reactor, ensure the jumper between terminals +1 and +2 (terminals are jumpered for shipment) is removed. The jumper
must be installed if no DC reactor is used. Refer to
Figure 8.23
 Connecting a Noise Filter

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.
Figure 8.24
432
A
A – Power supply
B – MCCB
Figure 8.25 Connecting a DC Reactor
C
B
MCCB
R/L1
S/L2
T/L3
A – Metal enclosure
B – Power supply
C – Input noise filter
D – Drive
E – Output noise filter
Figure 8.26 Reducing Radio Frequency Noise
Figure 8.25 for an example of DC reactor wiring.
C
B
R/L1
S/L2
T/L3
+ 1
D
C – Drive
D – DC reactor
A
E
D
U/T1
V/T2
W/T3
F – Shielded motor cable
G – Motor
H – Separate at least 30 cm
I – Control signal lines
J – Controller
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
+ 2
F
G
M
H
I
J