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INSTALLATION
2
(2) Power supply
Choose a power supply for encoder according to the encoder used (5V/12V/15V/24V). When the encoder
output is the differential line driver type, only 5V can be input. Make sure the voltage of the external power
supply the same as the encoder output voltage. (Check the encoder specification.)
When an encoder is used under orientation control, encoder feedback control, and vector control, the power
supply is shared between the inverter and encoder.
⋅ Specifications of the encoders equipped in the motors with encoders and the vector-control dedicated
motors
Item Encoder for SF-JR/HR/JRCA/HRCA Encoder for SF-V5RU, SF-THY
Resolution 1024 pulses/rev 2048 pulses/rev
Power supply
voltage
5VDC±10% 12VDC±10%
Current
consumption
150mA 150mA
Output signal form
A, B phases (90° phase shift)
Z phase: 1 pulse/rev
A, B phases (90° phase shift)
Z phase: 1 pulse/rev
Output circuit Differential line driver 74LS113 equivalent Complementary
Output voltage
H level: 2.4V or more
L level: 0.5V or less
H level: "Power supply for encoder-3V" or more
L level: 3V or less
CAUTION
When the input power supply voltage to the encoder and its output voltage differ, the signal loss detection
(E.ECT) may occur.