Mitsubishi FR-A740-00023-EC, Инструкция по эксплуатации

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36
Connection of motor with encoder (vector control)
(6) Instructions for encoder cable wiring
• Use twisted pair shield cables (0.2mm
2
or larger) to connect the FR-A7AP and position detector. Cables to terminals
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).
* 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
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 near as the inverter) with a P clip or
U clip made of metal.
(7) Parameter for encoder (Pr. 359, Pr. 369)
(8) Motor for vector control and parameter setting
Wiring Length Paralell Connection Larger-Size Cable
Within 10m At least 2 cables
Cable gauge
0.2mm
2
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), refer to page 33 .
Parameter
Number
Name
Initial
Value Setting
Range
Description
359
Encoder rotation
direction
1
0
1
369
Number of encoder
pulses
1024 0 to 4096
Set the number of encoder pulses output.
Set the number of pulses before it is multiplied by 4.
The above parameters can be set when the FR-A7AP (option) is mounted.
Motor Name
Pr. 9
Electronic thermal
O/L relay
Pr. 71
Applied motor
Pr. 80
Motor capacity
Pr. 81
Number of motor
poles
Pr. 359
Encoder rotation
direction
Pr. 369
Number of
encoder pulses
Mitsubishi standard
motor
SF-JR Motor rated current 0 Motor capacity Number of motor poles 1 1024
SF-JR 4P 1.5kW
or less
Motor rated current
20 Motor capacity Number of motor poles 1 1024
SF-HR
Motor rated current
40 Motor capacity Number of motor poles 1 1024
Others Motor rated current 3
*1
Motor capacity Number of motor poles
*2 *2
Mitsubishi constant-
torque motor
SF-JRCA 4P
Motor rated current
1 Motor capacity 4 1 1024
SF-HRCA 4P Motor rated current 50 Motor capacity 4 1 1024
Others Motor rated current 13
*1
Motor capacity Number of motor poles
*2 *2
Mitsubishi vector
control dedicated
motor SF-V5RU
(1500r/min series)
0
*3
30 Motor capacity 4 1 2048
SF-THY 0
*3
33
*1
Motor capacity 4 1 2048
Other manufacturer's
standard motor
—
Motor rated current
3
*1
Motor capacity Number of motor poles
*2 *2
Other manufacturer's
constant torque motor
— Motor rated current 13
*1
Motor capacity Number of motor poles
*2 *2
Values in the bolded frame are initial values.
*1 Offline auto tuning is necessary. (Refer to page 181)
*2 Set this parameter according to the motor (encoder) used.
*3 Use thermal protector input provided with the motor.
♦
Parameters referred to
♦
Vector control (speed control) Refer to page 92.
Vector control (torque control) Refer to page 116.
Vector control (position control) Refer to page 124.
Orientation control Refer to page 211.
Encoder feedback control Refer to page 367 .
Encoder cable
Shield
P clip
Earthing (grounding) example using a P clip
Forward rotation is clockwise
rotation when viewed from A.
A
Encoder
CW
A
Encoder
CCW
Forward rotation is counterclockwise
rotation when viewed from A.