Mitsubishi Electric 800 Series Instruction Manual page 477

(A) Application parameters
Setting I/O signals
Signal Signal name
X22 Orientation command
ORA Orientation complete
ORM Orientation fault
Selecting stop position command (Pr.350 Stop position command
selection)
• Select either to use the internal stop position command (Pr.356 Internal stop position command) or the external stop
position command (16-bit data using the FR-A8AX).
Pr.350 setting
0 Internal stop position command (Pr.356: 0 to 16383)
1 External stop position command (FR-A8AX) 16-bit data
9999 (Initial
Orientation control invalid
value)
• When the internal stop position command (Pr.350 = "0") is
selected, the Pr.356 setting is used as the stop position.
• When the number of encoder pulses is 1024 pulses/r, one
revolution (360°) of the encoder is divided by 4096 pulses
so that the degree per pulse can be calculated as 360° /
4096 pulses = 0.0879°/pulse. Refer to the figure on the
right. Stop position (address) is shown within parentheses.
• When the external stop position command (Pr.350 = "1") is selected while the FR-A8AX option is mounted, 16-bit data
(binary input) is used to give the stop position.
• The value set in Pr.360 16-bit data selection should be the divided value minus 1.
Pr.360 Setting
0 External position command is invalid (speed command or torque command via the FR-A8AX)
Position command direct input
The 16-bit digital signal via the FR-A8AX is the direct stop position command.
1 <Example>
When the Pr.369 Number of encoder pulses setting is "1024", the stop position command from "0 to 4095" can
be input using FR-A8AX, and the digital signal of "2048 (H800)" is input to stop the motor at a 180° position.
Set the stop position command by dividing up to 128 stop positions.
If the external stop command input is greater than the setting, the stop positions are the same as those in the
2 to 127 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 1] When Pr.369 = "1024"
Pr.360 = "1"
Origin (0)
270
(3072(HC00))
180
(2048(H800))
476
PARAMETERS
Use a terminal to input the orientation signal that commands orientation.
For the X22 signal input, set "22" in any of Pr.178 to Pr.189 to assign the function.
Output switches to Low if the orientation stop has made within the orientation complete width while the
start and X22 signals are input.
For the ORA signal output, set "27 (positive logic)" or "127 (negative logic)" in any of Pr.190 to Pr.196.
Output switches to Low if the orientation not stop has made within the orientation complete width while
the start and X22 signals are input.
For the ORM signal output, set "28 (positive logic)" or "128 (negative logic)" in any of Pr.190 to Pr.196.
Stop position command source
[Example 2] With 8 stop positions
Pr.360 = "7"
(7 or more)
CW
90
(6)270
(1024(H400))
Description
Origin (0)
270
(3072)
180 (2048)
Pr.359 = 0
Description
Origin(0) (1)
CW
315 45
90
(2)
135
(5)225
180
(3)
(4)
Origin (0)
CW
CCW
90 90
(1024) (1024)
180 (2048)
Pr.359 = 1
[Example 3] With 120 stop positions
Pr.360 = "119"
Origin (0)
CW
At intervals
270
90
of 3
(90)
(30)
180
(60)
270
(3072)