IMPULSE•G+/VG+ Series 4 Technical Manual
November 2022
Page 48
3.7 Encoder Circuit
A shaft-mounted encoder is required to provide speed and shaft position feedback to the IMPULSE•VG+ Series 4.
Without an encoder, flux vector control cannot operate properly.
Before you wire the encoder circuit, refer to
3.7.1 Encoder Circuit Specification and Wiring Procedure
Table 3-10: Encoder and PG-X3 Option Card Specifications
To wire the encoder circuit (assuming the VFD cover and keypad are detached):
1. Direct-couple the encoder to the motor shaft, using a zero-backlash-type coupling.
NOTE:
Do not connect the encoder to the motor with roller chain or gear drive. If unable to direct-couple the
encoder, use a timing belt to drive the encoder. Also, do not connect the encoder to the low-speed shaft of
a speed reducer.
2. Connect the encoder to the PG-X3 Encoder Option Card.
NOTE:
Use twisted-pair, shielded cable 100
Ω
impedance (Magnetek R-20/6, R-22/6, Belden 9730, or equivalent.
Strip the encoder wires 0.25 in. (5.5 mm). Keep the wiring length less than 300 feet (for cable lengths
greater than 300 feet, use fiber optic cable).
3. Connect the shield to Terminal FE of the PG-X3 Option Card (on only one end of the shielded cable).
4. Whenever possible, the encoder cable should be a continuous run between the motor and VFD. If it cannot be
a direct run, the splice should be in its own junction box and isolated from the power wires.
Power supply
+12 VDC (+5 VDC by CN3 jumper); max. 200 mA
(consult factory if inrush currents exceed 200 mA), an auxiliary power supply is required
Output Type
Differential Quadrature (A+, A-, B+, and B- channels; Z is not used)
Compatible Types
Line Driver (TTL/RS422)
Push-Pull (HTL)
Open Collector (PNP or NPN)
Non-Compatible Types
Resolver
Absolute (sine/cosine)
Maximum Input
Frequency
300 kHz
Mounting method
Encoder must be direct-coupled to motor shaft, using a zero-backlash-type coupling.
Содержание Impulse G+ series 4
Страница 20: ...IMPULSE G VG Series 4 Technical Manual November 2022 Page 20 Figure 2 1 Capacitor Reform Diagrams...
Страница 30: ...IMPULSE G VG Series 4 Technical Manual November 2022 Page 30 Figure 3 1 Typical Connection Diagram...
Страница 53: ...IMPULSE G VG Series 4 Technical Manual November 2022 Page 53 4 3 2 Menu Structure Figure 4 1 Menu Structure...
Страница 243: ...IMPULSE G VG Series 4 Technical Manual November 2022 Page 243 Figure B 5 Figure B 6 Figure B 7...
Страница 246: ...IMPULSE G VG Series 4 Technical Manual November 2022 Page 246 Figure B 8 Figure B 9 Figure B 10 Figure B 11...
Страница 248: ...IMPULSE G VG Series 4 Adjustable Frequency Vector Crane Controls Technical Manual November 2022...