Mitsubishi Electric MELCEC Q Series User Manual page 122

8. EMC AND LOW VOLTAGE DIRECTIVES
(2)
(3)
MELSECNET (II) and MELSECNET/10 modules
(a) Use a double-shielded coaxial cable for the MELSECNET module which uses
coaxial cables such as A1SJ71AR21, A1SJ71LR21 and A1SJ71BR11. Noise in
the range of 30 MHz or higher in radiation noise can be suppressed by the use of
double-shielded coaxial cables (manufactured by MITSUBISHI CABLE
INDUSTRIES, LTD: 5C-2V-CCY). Earth the outer shield to the ground.
Refer to (1) for the grounding of the shield.
(b) Make sure to attach a ferrite core to the double-shielded coaxial cable connected
to the MELSECNET module. In addition, position the ferrite core on each cable
near the outlet of the control panel. The ferrite core manufactured by TDK
Corporation, ZCAT3035-1330, is recommended.
Ethernet module
Precautions when using the AUI cables
described below.
(a) Always earth the AUI cables
the AUI cable is of the shielded type, strip part of the outer cover and earth the
exposed shield section to the ground on the widest contact surface as shown
below.
Refer to (1) for the grounding of the shield.
(b) Use shielded twisted pair cables as the twisted pair cables
10BASE-T connectors. Partly strip the outer sheath of the shielded twisted pair
cable, and ground the exposed shield section to the widest possible area as
shown below.
Refer to (1) for the grounding of the shield.
*1 Make sure to attach a ferrite core to the cable.
The ferrite core manufactured by TDK Corporation, ZCAT2032-0930, is recommended.
*1
, twisted pair cables, and coaxial cables are
*1
connected to the 10BASE5 connectors. Because
8 - 5
*1
connected to the