Mitsubishi Electric FR-A800 Series Instruction Manual page 590

 Setting I/O signals
Signal Signal name
Orientation
X22
command
Orientation
ORA
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).
0
1
9999 (initial 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
(quadruplicated) so that the degree per pulse can be calculated as
360° / 4096 pulses = 0.0879°/pulse.
Refer to the following figure. Stop position (address) is shown within parentheses.
Origin (0)
270
(3072)
180 (2048)
Pr.359 = 0
• When the external stop position command (Pr.350 = "1") is selected while the FR-A8AX option is installed, 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
1
2 to 127
[Example 1] When Pr.369 = "1024"
Pr.360 = "1"
270
(3072(HC00))
Downloaded from ManualsNet.com
Turn ON the X22 signal to start the orientation operation.
For the X22 signal input, set "22" in any of Pr.178 to Pr.189 to assign the function.
The output is in LOW state when the orientation stop can be made within the orientation complete width while
the start signal and X22 signal are input (ON).
For the ORA signal output, set "27 (positive logic)" or "127 (negative logic)" in Pr.190 to Pr.196.
The output is in LOW state when the orientation stop cannot be made within the orientation complete width
while the start signal and X22 signal are input (ON).
For the ORM signal output, set "28 (positive logic)" or "128 (negative logic)" in Pr.190 to Pr.196.
Pr.350 setting
Origin (0)
CW
CCW
90 90
(1024) (1024)
180 (2048)
Pr.359 = 1
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.
<Example>
When the Pr.369 Number of encoder pulses setting is "1024", the stop position command "0 to 4095" can be input using
the FR-A8AX, and the digital signal of "2048 (H800)" is input to stop the motor at a 180° position. A command greater than
4096 is considered as 4095.
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 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 2] With 8 stop positions
Pr.360 = "7"
Origin (0)
CW
90
(1024(H400))
180
(2048(H800))
search engine
Description
Stop position command source
Internal stop position command (Pr.356: 0 to 16383)
External stop position command (FR-A8AX) 16-bit data
Orientation control disabled
270
(3072)
Description
Origin(0) (1)
(7 or more)
CW
315 45
90
(6)270
(2)
135
(5)225
180
(3)
(4)
[Example 3] With 120 stop positions
Pr.360 = "119"
Origin (0)
CW
At intervals
270
90
of 3
(90)
(30)
180
(60)
5. PARAMETERS
5.14 (A) Application parameters
1
2
3
4
5
6
7
8
9
10
589