Mitsubishi Electric FR-A700 EC, Instruction Manual

Page: 313 / 826

Parameter Position control by vector control
FR-A700 EC 6 - 133
Setting of position feed amount by parameter
●
Set position feed amount in Pr. 465 to Pr. 494.
●
The feed amount set in each parameter is selected by multi-speed terminal (RH, RM, RL,
REX).
●
Set (encoder resolution × speed × 4 times) for position feed amount.
Position command operation by parameter
For deceleration by turning the STF(STR) off, use Pr. 464 "Digital position control sudden stop
deceleration time" to set deceleration time.
Example
쑴
For example, the formula for stopping the motor after 100 rotations using the FR-V5RU is as
follows:
2048 (pulse/rev) × 100 (speed) × 4 = 819200 (feed amount)
To set 819200 for the first position feed amount, divide the value into upper four digits and
lower four digits and set 81 (decimal) in Pr. 466 (upper) and 9200 (decimal) in Pr. 465
(lower). Positioning is made with the frequency set in parameter 4.
쑶
I001537E
Fig. 6-40: Position command operation by parameter
NOTES Acceleration/deceleration time is 0.1s minimum and 360s maximum.
Pr. 20 "Acceleration/deceleration reference frequency" is clamped at a minimum of 16.66Hz
(500r/min).
The acceleration/deceleration patterns for position control are all linear acceleration and the
setting of Pr. 29 "Acceleration/ deceleration pattern selection" is invalid.
b
CAUTION:
Information on multi-speed command (position command by RL, RM, RH, and REX
signals) is determined at rising of the forward (reverse) command to perform position
control. Therefore, set forward (reverse) command after multi-speed command (posi-
tion command). Position feed is invalid if the multi-speed command is given after
forward (reverse) command.
F
requency [Hz]
Servo on
(LX)
In-position
Pr. 7
(Pr. 44, Pr. 110)
Pr. 8
(Pr. 45, Pr. 111)
Positionier-
drehzahl
Pr. 4
First position feed amount
Shaded part is the travel
Pr. 466
×
10000 + Pr. 465
Pr. 5
Second position feed
amount
Stops when the STF is
turned off
Time
Pr. 464
Position feed is
performed by
sending run
command by contact
input or
communication.