Mitsubishi Electric MR-MQ100, User Manual

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15 - 7
15 EMC DIRECTIVES
15.1.4 Example of measure against noise
The example of corrective action to use noise suppression modules is shown below.
NF
3)
SSCNET cable
Motion controller
Ethernet cable
(
Control panel A
2)
1)
AC power
supply
24VDC
power supply
: AD75CK cable clamp
: Ferrite core
(Recommended product: ZCAT3035-1330)
Ethernet cable
(Shield tuisted pair of category 5 or more)
4) 4)
Manual pulse generator/Synchronous encoder
Internal I/F
connector cable
PULL
1)
NF : NFB (NF30CS2P10A)
: Line Filter (FR-BLF)
Internal I/F
connector
Input,Output
Internal I/F
connector cable
1) Ground the FG terminal of the Motion controller and 24VDC power supply module to the control panel.
2) Measure against noise of the power supply cable (24VDC twisted cable)
•
Wire the power supply cable as short as possible using the twisted cable.
•
Install a ferrite core at a position 20 to 30cm (7.87 to 11.81inch) away from the product.
3) Install a line filter in the secondary side of NF. (Approx. 4 turn)
4) Measure against noise of the internal I/F connector cable
•
Ground the cables at a position 30 to 40cm (11.81 to 15.75inch) away from the module with the cable clamp, etc.
•
When the cables are extracted from the control panel, ground the cables at a position 5 to 10cm (1.97 to 3.94inch) away
from the exit/entrance of the control panel with the cable clamp, etc.
• Refer to Section 2.5.2(b) for the internal I/F connector cable
.
Use the shielded twisted pair cable and correctly
wire the internal I/F connector cable.
(1) Refer to Chapter 2 and appendix for the following cables.
• Ethernet cable
• SSCNET cable
(2) Refer to Section 2.5.2(b) and APPENDIX 1.3 for the internal I/F connector cable.
Use the shielded twisted pair cable and correctly wire the internal I/F connector
cable.
(3) In wiring inside the panel, the power line connected to the power or servo
amplifier and the communication cable such as bus connection cable or network
cable must not be mixed. If the cables are installed closely with each other for
wiring reasons, using a separator (made of metal) can make the cables less
influenced by noise.
Mixing the power line and communication cable may cause malfunction due to
noise.