Wiring - Mitsubishi Electric FR-A7AL Instruction Manual

INSTALLATION
2.4

Wiring

(1) Use shielded twisted pair cables (0.2mm
FR-A7AL. Cables to terminals PG and SD should be connected in
parallel or be larger in size according to the cable length.
To protect the cables from noise, run them away from any source of
noise (e.g. the main circuit and power voltage).
Wiring Length
Within 10m At least two cables in parallel
Within 20m At least four cables in parallel
Within 100m* At least six cables in parallel
* When encoder type is differential line driver and a wiring length is 30m or more
Use a power supply slightly higher than 5V (approximately 5.5V) in addition to 6
or more parallel cables of 0.2mm
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.
REMARKS
For details of the dedicated encoder cable (FR-JCBL/FR-V7CBL), refer to page 16.
The FR-V7CBL is provided with a P clip for earthing (grounding) shielded cable.
12
2
or larger) to connect the
Parallel Connection
2
(Cable gauge 0.2mm )
2
or cables of 1.25mm
(with complementary encoder output)
Larger-size Cable
2
0.4mm or larger
2
0.75mm or larger
2
1.25mm or larger
2
or more. Note that the
Example of parallel connection
with two cables
FR-A700
(FR-A7AL)
PA
PAR
PB
PBR
PZ
PZR
PG
SD
2
2mm
Earthing (grounding)
example using a P clip
Encoder cable
Shield
P clip
PLG
A
B
C
D
F
G
S
R