Mitsubishi Electric FR-A820-00046 Instruction Manual page 112

Connection of motor with encoder (vector control)
● To reduce noise of the encoder cable, earth (ground) the encoder's shielded cable to the enclosure
(as close as possible to the inverter) with a P-clip or U-clip made of metal.
Earthing (grounding) example using a P-clip
● When one encoder is shared between FR-A8AP and CNC (computerized numerical controller), its
output signal should be connected as shown below. In this case, the wiring length between
FR-A8AP and CNC should be as short as possible, within 5 m.
NOTES For the details of the optional encoder dedicated cable (FR-JCBL/FR-V7CBL), refer to page 2-75.
The FR-V7CBL is provided with a P-clip for earthing (grounding) shielded cables.
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Encoder cable
Shield
P-clip
Inverter
Encoder
(FR-A8AP
Maximum 5 m
(2 parallel cables)
Fig. 2-59:
Earthing (grounding) example using a P-clip
Fig. 2-60:
Wiring of the encoder with inverter and CNC
CNC
Installation and wiring
I001448E
I002807E