14
2.4 Wiring
(1) Use twisted pair shield cables (0.2 mm
2
or larger) to connect the FR-A8AP and position detector.
For the wiring to the terminals PG and SD, use several cables in parallel or use a
thick cable, according to the wiring length. 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 30 m or more
The wiring length can be extended to 100 m by slightly increasing the 5 V power
supply (approx. 5.5 V) and using six or more cables with gauge size of 0.2 mm
2
in
parallel or a cable with gauge size of 1.25 mm
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.
NOTE
• For details of the optional encoder dedicated cable (FR-JCBL/FR-V7CBL), refer to
.
• FR-V7CBL is provided with a P clip for earthing (grounding) shielded cable.
Wiring length
Parallel connection
(Cable gauge 0.2 mm
2
)
Larger-size cable
Within 10 m
At least two cables in parallel
0.4 mm
2
or larger
Within 20 m
At least four cables in parallel
0.75 mm
2
or larger
Within 100 m
At least six cables in parallel
1.25 mm
2
or larger
SD
PG
G
F
D
C
B
A
R
S
Encoder
2mm
2
FR-A800
(FR-A8AP)
PZ2
PZ1
PB2
PB1
PA2
PA1
Example of parallel connection
with two cables
(with complementary encoder output)
Encoder cable
Shield
P clip
Earthing (grounding) example using a P clip
A8AP.book 14 ページ 2013年9月12日 木曜日 午後7時48分