SMC Corporation LECSA series, Руководство по эксплуатации

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11. OPTIONS AND AUXILIARY EQUIPMENT
7)
Receiver Instrument
Sensor
power supply
Servo
amplifier
1)
3)
2)
4)
7)
6)
2)
3)
8)
5)
Servo motor
M
7)
Sensor
Noise transmission
route
Suppression techniques
1) 2) 3)
When measuring instruments, receivers, sensors, etc. which handle weak signals and may
malfunction due to noise and/or their signal cables are contained in a control box together with the
driver or run near the driver, such devices may malfunction due to noises transmitted through the air.
The following techniques are required.
1. Provide maximum clearance between easily affected devices and the driver.
2. Provide maximum clearance between easily affected signal cables and the I/O cables of the driver.
3. Avoid laying the power lines (Input cables of the driver) and signal cables side by side or bundling
them together.
4. Insert a line noise filter to the I/O cables or a radio noise filter on the input line.
5. Use shielded wires for signal and power cables or put cables in separate metal conduits.
4) 5) 6)
When the power lines and the signal cables are laid side by side or bundled together, magnetic
induction noise and static induction noise will be transmitted through the signal cables and malfunction
may occur. The following techniques are required.
1. Provide maximum clearance between easily affected devices and the driver.
2. Provide maximum clearance between easily affected signal cables and the I/O cables of the driver.
3. Avoid laying the power lines (I/O cables of the driver) and signal cables side by side or bundling
them together.
4. Use shielded wires for signal and power cables or put the cables in separate metal conduits.
7)
When the power supply of peripheral devices is connected to the power supply of the driver system,
noises produced by the driver may be transmitted back through the power supply cable and the
devices may malfunction. The following techniques are required.
1. Insert the radio noise filter (FR-BIF (Mitsubishi Electric Corporation)) on the power cables (Input
cables) of the driver.
2. Insert the line noise filter (FR-BSF01 (Mitsubishi Electric Corporation)) on the power cables of the
driver.
8)
When the cables of peripheral devices are connected to the driver to make a closed loop circuit,
leakage current may flow to malfunction the peripheral devices. If so, malfunction may be prevented
by disconnecting the grounding cable of the peripheral device.