Initial Setting - Mitsubishi Electric FR-A700 Instruction Manual

(6) Instructions for encoder cable wiring
• Use twisted pair shield cables (0.2mm
PG and SD should be connected in paralell 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 supply
voltage).
Wiring Length
Within 10m At least 2 cables
Within 20m At least 4 cables
Within 100m * At least 6 cables
* When differential line 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
in parallel or a cable with gauge size of 1.25mm
• 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 optional encoder dedicated cable (FR-JCBL/FR-V7CBL), refer
to page 30.
· The FR-V7CBL is provided with a P clip for earthing (grounding) shielded cable.
(7) Parameter for encoder (Pr. 359, Pr. 369)
Parameter
Name
Number
Encoder rotation
359
direction
Number of encoder
369
pulses
The above parameters can be set when the FR-A7AP (option) is mounted.
(8) Motor for vector control and parameter setting
Motor Name
SF-JR
SF-JR 4P 1.5kW
Mitsubishi standard
or less
motor
SF-HR
Others
SF-JRCA 4P
Mitsubishi constant-
SF-HRCA 4P
torque motor
Others
Mitsubishi vector SF-V5RU
control dedicated
(1500r/min series)
motor
SF-THY
Other manufacturer's
standard motor
Other manufacturer's
constant torque motor
Values in the bolded frame are initial values.
*1 Offline auto tuning is necessary. (Refer to page 62)
*2 Set this parameter according to the motor (encoder) used.
*3 Use thermal protector input provided with the motor.
2
or larger) to connect the FR-A7AP and position detector. Cables to terminals
Paralell Connection
Cable gauge
0.2mm
2
or more. Note that the voltage applied should be within power supply specifications of encoder.
Initial
Value
1
1024
Pr. 9
Pr. 71
Electronic thermal
Applied motor
O/L relay
Motor rated current
Motor rated current
Motor rated current
Motor rated current 3
Motor rated current
Motor rated current
13
Motor rated current
0
*3
0 33
*3
— Motor rated current 3
— 13
Motor rated current
Larger-Size Cable
2
0.4mm or larger
2
0.75mm or larger
2
2
1.25mm or larger
Earthing (grounding) example using a P clip
Setting
Range
0
A
Encoder
CCW
1
A
Encoder
Set the number of encoder pulses output.
0 to 4096
Set the number of pulses before it is multiplied by 4.
Pr. 80
Number of motor
Motor capacity
0 Motor capacity
Number of motor poles
20 Motor capacity
Number of motor poles
40 Motor capacity Number of motor poles
Motor capacity Number of motor poles
*1
1 Motor capacity
50 Motor capacity
Motor capacity
Number of motor poles
*1
30 Motor capacity
Motor capacity
*1
Motor capacity Number of motor poles
*1
Motor capacity
Number of motor poles
*1
Encoder cable
Shield
P clip
Description
CW
Forward rotation is clockwise
rotation when viewed from A.
Forward rotation is counterclockwise
rotation when viewed from A.
Pr. 359 Pr. 369
Pr. 81
Encoder rotation Number of
poles direction encoder pulses
1
1
1
*2
4 1
4 1
*2
4 1
4 1
*2
*2
Wiring
2
1024
2
1024
1024
*2
1024
1024
*2
2048
2048
*2
*2
33