Initial Setting - Mitsubishi Electric FR-A700 Series 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 voltage).
Wiring Length
Within 10m At least 2 cables
Within 20m At least 4 cables
Within 100m * At least 6 cables
* 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
2
0.2mm in parallel or a cable with gauge size of 1.25mm
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 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
or less
standard motor
SF-HR
Others
SF-JRCA 4P
Mitsubishi
constant- SF-HRCA 4P
torque motor
Others
SF-V5RU
Vector control
dedicated
1500r/min series
motor
SF-V5RU1, 3, 4
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 63)
*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
2
0.2mm
2
or more. Note that the voltage applied should be within power supply specifications of
Initial Setting
Value Range
1
1024 0 to 4096
Pr.9
Pr.71
Electronic thermal
Applied motor
O/L relay
0
Motor rated current
Motor rated current 20
40
Motor rated current
3
Motor rated current
*1
1
Motor rated current
50
Motor rated current
13
Motor rated current
*1
0 30
*3
0 33
*3 *1
Motor rated current 3
*1
13
Motor rated current
*1
Larger-Size Cable
2
0.4mm or larger
2
0.75mm or larger
2
1.25mm or larger
Earthing (grounding) example using a P clip
0
A
Encoder
CCW
1
A
Encoder
Set the number of encoder pulses output.
Set the number of pulses before it is multiplied by 4.
Pr.81
Pr.80
Number of motor
Motor capacity
poles
Motot capacity
Number of motor poles
Motot capacity Number of motor poles
Motot capacity
Number of motor poles
Motot capacity
Number of motor poles
Motot capacity 4
Motot capacity 4
Motot capacity
Number of motor poles
Motot capacity 4
Motot capacity 4
Motot capacity Number of motor poles
Motot capacity
Number of motor poles
Wiring
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
Encoder rotation Number of
direction encoder pulses
1 1024
1 1024
1 1024
*2 *2
1 1024
1 1024
*2 *2
1 2048
1 2048
*2 *2
*2 *2
2
33