DCN4-BR4D Omron, DCN4-BR4D Datasheet - Page 103

• Manufacturer Part Number: DCN4-BR4D
• Description: Thin Cable-Flat Cable Conv Con
• Manufacturer: Omron

Specifications of DCN4-BR4D

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Minimizing Noise in the Network
2-5
2-5-1
82
Minimizing Noise in the Network
Precautions to Prevent Noise
Communications lines
and PLC I/O lines
PLC power lines and
general control circuit lines
• To prevent inductive noise, separate the communications lines, PLC
• Make the power supply lines to the control panel as short as possible, use
• Avoid installing any DeviceNet devices in a control panel that contains
• Install surge suppressors on devices that generate noise, particularly
• If a surge suppressor cannot be installed, installing a ferrite core directly
• Noise emanating from the communications cable can be reduced by
power supply lines, and other power lines. In particular, be sure to keep
the power lines for inverters, motors, regulators, and contactors at least
300 mm away from both the communications lines and the power supply
lines. Also, provide separate conduits or ducts for the communications
lines and power lines.
heavy-gauge wire, and ground the power supply properly (100 Ω max.)
high-voltage devices.
devices that have an inductive component such as motors, transformers,
solenoids, and magnetic coils.
next to the device's contacts, such as a contactor may be effective.
installing a ferrite core on the communications cable within 10 cm of the
DeviceNet Master Unit.
DC Device
Power lines
Surge suppressor
(just before device)
Ferrite core
Device
(such as a motor)
Control
cables
Low-voltage
communications
cables
Power
cables
Ground
(100 Ω max.)
300 mm min.
300 mm min.
Device
(such as a motor)
Suspended
ducts
Conduit
1
AC Device
1
2
2
Surge suppressor
(just before device)
1
2
Communications lines
and PLC I/O lines
Power lines
1
Floor
ducts
Section 2-5
Device
(such as a motor)
2