Mitsubishi Electric FR-A720-0.4K Instruction Manual page 223

(3) Selecting stop position command (Pr. 350 Stop position command selection )
⋅ Select either the internal stop position command (Pr. 356) or the external stop position command (16-bit data using
the FR-A7AX).
Pr.350 Setting Stop Position Command Source
0 Internal stop position command (Pr. 356:0 to 16383)
1 External stop position command (FR-A7AX) 16-bit data
1) Internal stop position command (Pr. 350 = "0")
The value set in Pr. 356 is the stop position.
When the number of encoder pulses is 1024p/r, one
revolution of the encoder is divided into 4096 positions,
i.e. 360°/4096 pulses = 0.0879°/pulses per address, as
shown on the right. The stop positions (addresses) are
indicated in parentheses.
2) External stop position command (Pr. 350 = "1")
Mount the option FR-A7AX and set a stop position using 16-bit data (binary input).
⋅ The value set in Pr. 360 16 bit data selection should be the number of stop positions less 1.
Pr. 360 Setting
0 External position command is made invalid (speed command or torque command with the FR-A7AX)
Position command direct input
The 16-bit digital signal from the FR-A7AX is directly serves as stop position command.
<Example>
1
When the Pr. 369 Number of encoder pulses setting is 1024, stop position command from 0 to 4095 can be
directly input using the FR-A7AX and input digital signal of 2047 (H7FF) to stop the motor at 180
command more than 4096 is considered as 4095.
Set the stop position command dividing up to 128 stop positions at regular intervals.
If the external stop command entered is greater than the setting, the stop positions are the same as those in
the maximum external stop command value.
2 to 127
<Example>
When the number of stop positions is 90 (divided at intervals of 4
[Example] When Pr. 369 = "1024"
Origin (0)
CW
90
270
(1023(H3FF))
(3071(HBFF))
180
(2047(H7FF))
When Pr. 360 = "1"
CAUTION
⋅
Values in parentheses indicate binary data entered from the terminals. Even if the position pulse monitor (Pr. 52 DU/PU main
display data selection = 19) is selected, the data monitored is not the number of stop positions but is 0 to 65535 pulses.
⋅
FR-A7AX parameters (Pr. 300 to Pr. 305) are invalid. (Valid when Pr. 360 = "0")
⋅
Terminal DY (data read timing input signal) is made invalid during vector control. (The position data is downloaded at the start of
orientation.)
⋅
When the option is not fitted or Pr. 360 = "0", the stop position is 0 even if the external stop position command is selected with the
Pr. 350 setting.
270
(3072)
Description
[Example 2] 8 stop positions
Origin(0)
(7 or more) (1)
45
315
90
(6)270
(2)
135
(5)225
180
(3)
(4)
When Pr. 360 = "7"
Motor brake and stop operation
Origin (0) Origin (0)
CW
CCW
90 90
(1024) (1024)
180 (2048) 180 (2048)
Pr.359=1 Pr.359=1
°
), 90 - 1 = 89. Hence, set "89".
[Example 3] 120 stop positions
Origin (0)
At intervals
270
of 3
(90)
180
(60)
When Pr. 360 = "119"
270
(3072)
°
position. The
CW
90
(30)
4
213