Mitsubishi FR-A740-00023-EC, Instruction Manual

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214
Motor brake and stop operation
(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).
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. 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
9999
(Initial value)
Orientation control invalid
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.
Pr. 360 Setting Description
0 External position command is made invalid (speed command or torque command with the FR-A7AX)
1
Position command direct input
The 16-bit digital signal from the FR-A7AX is directly serves as stop position command.
<Example>
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 2048 (H800) to stop the motor at 180
°
position. The
command more than 4096 is considered as 4095.
2 to 127
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.
<Example>
When the number of stop positions is 90 (divided at intervals of 4
°
), 90 - 1 = 89. Hence, set "89".
[Example] When
Pr. 369
= "1024" [Example 2] 8 stop positions [Example 3] 120 stop positions
Pr. 360
= "1"
Pr. 360
= "7"
Pr. 360
= "119"
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.)
⋅
Internal stop position command is given even if "1" (external stop position command) is set in Pr. 350 when an option card (FR-
A7AX) is not mounted or Pr. 360 = "0".
Origin (0)
Origin (0)
CW
CCW
270
(3072)
90
(1024)
Pr. 359 = 1
270
(3072)
180 (2048)
Pr. 359 = 1
180 (2048)
90
(1024)
270
(3072(HC00))
180
(2048(H800))
90
(1024(H400))
CW
Origin (0) Origin(0)
(7 or more)
315
(6)270
(5)225
(1)
45
135
(3)
180
(4)
90
(2)
CW
Origin (0)
CW
At intervals
of 3
270
(90)
180
(60)
90
(30)