Instruction manual

9
INSTALLATION
2
2.4 Wiring
(1) Use twisted pair shield cables (0.2mm
2
or larger) to connect the FR-A7AP and position detector.
To protect the cables from noise, run them away from any source of noise (e.g. the main circuit
and power voltage).
* When differential driver is set and a wiring length is 30m or more
The wiring length can be extended to 100m by slightly increasing the power by 5V (approx. 5.5V) using six or more cables with
gauge size of 0.2mm
2
in parallel or a cable with gauge size of 1.25mm
2
or more. Note that the voltage applied should be within
power supply specifications of encoder.
To reduce noise of the encoder cable, earth (ground) the encoder shielded cable to the enclosure (as near
as the inverter) with a P clip or U clip made of metal.
Wiring Length Paralell Connection Larger-Size Cable
Within 10m At least 2 cables
Cable gauge
0.2mm
2
0.4mm
2
or larger
Within 20m At least 4 cables
0.75mm
2
or larger
Within 100m * At least 6 cables
1.25mm
2
or larger
REMARKS
· For details of the optional encoder dedicated cable (FR-JCBL/FR-V7CBL), refer to page 13.
· The FR-V7CBL is provided with a P clip for earthing (grounding) shielded cable.
Encoder cable
Shield
P clip
Earthing (grounding) example using a P clip