331
Inverter Positioning
Section 7-3
7-3-7
Determining the Internal Pulse Output Frequency
Use the following formula to calculate the internal pulse frequency (Hz) to out-
put from the pulse output instruction (e.g., PLS2) based on the power supply
frequency (Hz) to be output from the inverter to the motor.
Note
(1) Calculate the power supply frequency for one revolution per second from
the motor specifications. For example, with a 1,800-r/min (60-Hz) motor
(30 r/s), the power supply frequency for one revolution per second would
be calculated as follows: 60 [Hz]
÷
30 [r/s] = 2 [Hz].
D
First destina-
tion word for
present value
D
Lower 4
digits
When a present value is read, the following
data is stored in D and D+1 as an 8-digit hexa-
decimal value.
P = #0020/#0021: The actual movement from
the internal pulse origin.
P = #0030/#0031: The present value of the
error counter.
D+1 Upper 4
digits
Destination
word for
inverter posi-
tioning status
(P = #0020 or
#0021)
D
Bit 0
Operation Command Flag
ON: Operation command in progress
OFF: Stopped
Bit 1
Forward Command Flag
ON: Forward command in progress
OFF: Reverse command in progress or
stopped
Bit 2
Reverse Command Flag
ON: Reverse command in progress
OFF: Forward command in progress or
stopped
Bit 3
In-position Flag
ON: In position
OFF: Not in position
Bit 4
Error Counter Error Flag
ON: Error occurred in error counter
OFF: No error
Bit 5
Internal Pulse Output Flag
ON: Pulses being output
OFF: Pulse output stopped
Bit 6
Internal Pulse Acceleration/Deceleration Flag
ON: Acceleration/deceleration in progress for
internal pulse output (i.e., frequency being
changed)
OFF: Constant frequency for internal pulse out-
put
Bit 7
Error Counter Alarm Flag
ON: Alarm occurred for error counter
OFF: No alarm
Bit 15
Error Counter Sign Flag
ON: Positive
OFF: Negative
Operand
Description
Frequency of
internal pulse
output (Hz)
Power supply
frequency to
motor (Hz)
Encoder resolution
(pulses/revolution)
Power supply frequency to motor
for one revolution per second (See note 1.)
High-speed
counter multiplier
Gear ratio between motor
shaft and encoder shaft
(See note 2.)
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......