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9
INSTALLATION
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 close as the
inverter) with a P clip or U clip made of metal.
Wiring Length
Parallel Connection
(Cable gauge 0.2mm
2
)
Larger-Size Cable
Within 10m At least 2 cables
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.
· FR-V7CBL is provided with a P clip for earthing (grounding) shielded cable.
Example of parallel connection
with two cables
(with complementary encoder output)
PZ2
PZ1
PA1
PA2
PB1
PB2
SD
PG
G
F
D
C
B
A
R
S
Encode
r
2mm
2
FR-A700
(FR-A7AP)
Encoder cable
Shield
P clip
Earthing (grounding) example using a P clip