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332
Inverter Positioning
Section 7-3
(2) The encoder resolution times the counter multiplier times the gear ratio
equals the number of pulses output by the encoder for one motor shaft
revolution.
Example of
Calculating
Conversion Factor
Conditions
• Frequency for 1 revolution/s for inductive motor: 2 Hz (motor specification)
• Rotary encoder resolution: 1,000 pulses/revolution (encoder specifica-
tion)
• High-speed counter multiplier: x4 (PLC Setup)
• Gear ratio between motor and encoder shafts: 1/4 (machine specification)
Calculations
The factor goes into the formula as shown below.
For example, to output a power supply frequency of 10 Hz to the motor:
Frequency of internal pulse output = 500
×
10 Hz = 5,000 Hz = 5 kHz
Therefore, set a pulse output frequency of 5 kHz in the pulse output instruc-
tions (e.g., PLS2).
CP1L-EL/EM
Pulse output
instruction
Target frequency
Internal
pulses
Error
counter
Conversion formula
Inverter
Motor
Power
supply
frequency
Encoder
2
1000
×
4
×
1/4
500
×
Power supply frequency to motor (Hz)
Frequency of
internal pulse
output (Hz)
Power supply
frequency to
motor (Hz)
Содержание CP1L-EL20DR-D
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Страница 34: ...xxxiv Software Licenses and Copyrights 7...
Страница 178: ...144 Connecting the CX Programmer Section 5 1 Click the Connect button to connect and then connection online is completed...
Страница 192: ...158 Trial Operation and Debugging Section 5 3...
Страница 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Страница 666: ...632 Trouble Shooting Section 11 7...
Страница 696: ...662 Standard Models Appendix A...
Страница 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Страница 836: ...802 PLC Setup Appendix G...
Страница 838: ...804 TCP Status Transitions Appendix H...
Страница 840: ...806 Ethernet Network Parameters Appendix I...
Страница 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Страница 844: ...810 Ethernet Specifications Appendix K...
Страница 851: ...Index 817 work words 118 write protection 447...
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