Setting Of Various Items Regarding Speeds; Setting Of Various Items Regarding Instructions And Speeds - Mitsubishi MELSEC-F FX3U Series User Manual

FX /FX Series PLC User's Manual - Positioning Control Edition
3U 3UC
Built-in Positioning Function
4.2

Setting of Various Items Regarding Speeds

Specify the output pulse frequency using the operand of each instruction or the related device to determine
the output pulse frequency, zero return speed, or creep speed.
4.2.1

Setting of Various Items Regarding Instructions and Speeds

1. Interrupt Positioning (DVIT) instruction, drive to increment (DRVI) instruction, and drive to
absolute (DRVA) instruction
For these instructions, it is necessary to specify the maximum speed, bias speed, acceleration time, and
deceleration time using the related devices in addition to the output pulse frequency specified by the operand
of the instruction.
→ For details on each setting item, refer to Subsection 4.2.2 , and Subsection 4.2.5 to Subsection 4.2.8
Actual
acceleration time
Initial value: 0 Hz
2. Variable speed Pulse Output (PLSV) instruction
For the variable speed pulse output (PLSV) instruction, it is necessary to specify the maximum speed, bias
speed, acceleration time, and deceleration time using the related devices in addition to the output pulse
frequency specified by the operand of the instruction. However, note that the acceleration time and the
deceleration time are valid during acceleration/deceleration (M8338 = ON) only.
→ For details on each setting item, refer to Subsection 4.2.2 , and Subsection 4.2.5 to Subsection
1) When acceleration/deceleration is being performed (M8338 = ON)
Actual
acceleration time
Initial value: 0 Hz
2) When acceleration/deceleration is not performed (M8338 = OFF)
If the frequency value is
less than the bias speed
value, the frequency will
not be output.
Initial value: 0 Hz
→ For operation of DRVI or DRVA instruction, refer to Chapter 8.
Maximum speed
Initial value: 100,000 Hz
Output pulse frequency S
Bias speed
Acceleration
Current
time
position
Initial value: 100 ms
Maximum speed
Initial value: 100,000 Hz
Output pulse
frequency
Bias speed
Acceleration
Current
time
position
Initial value: 100 ms
Maximum speed
Initial value: 100,000 Hz
Output pulse
frequency
Bias speed
→ For operation of DVIT instruction, refer to Chapter 9.
2
Number of S
1
output pulses
Deceleration
time
Initial value: 100 ms
→ For operation of PLSV instruction, refer to Chapter 10.
S
Initial value: 100 ms
S
4 Before Programming
4.2 Setting of Various Items Regarding Speeds
Actual
deceleration time
Bias speed
Target
position
Actual
deceleration time
Bias speed
Acceleration
time
Bias speed
A
B
Apx.
4.2.8.
B - 29