Hi everyone,

General Electric 3VFD Series VFD:

Control system: All-digital sinusoidal PWM system
Carrier frequency: 3-8kHz (Arbitrarily selected with 1kHz units)
Output frequency resolution: 0.01Hz
Frequency setting resolution: Digital setting input: 0.01Hz, Analog setting (external) input: 0.1% of maximum frequency
Frequency accuracy: Digital setting: ±0.01% (25ºC±10ºC), Analog setting: ±0.5% (25ºC±10ºC)

Control specifications:
Voltage/Frequency characteristics: Constant torque, constant power, and reduced variable torque. Each can be set arbitrarily in the range of 3-440Hz. Selection by preset patterns are also available.
Torque boost: Auto/Manual selection available. Range of setting boost: 0.0-20.0%, square low: 0.0-25.0%
Start frequency: 0.1-60.0Hz (1.0Hz for standard)
Starting torque: 150% or more
Accel./decel. time: 0.01-60,000 sec (accel./decel. set separately). In addition to two sets of acceleration/deceleration time, eight sets of acceleration/deceleration time can be selected. There is acceleration/deceleration time available exclusively for inching operation.
Accel./decel. mode: Linear/S shape characteristics accel. and decel. selection available

Operation system:
3-mode selection available
- Forward reverse run
- Operating and revolving directions
- Forward operation pulses/reverse operation pulses/stop, Inching operation available

Stopping system: Ramp down stop/coast-to-stop stop selection possible. Deceleration and stop with each command for run, emergency stop, and inching.
DC brake: DC brake starting frequency: 0.1-60.0Hz/braking voltage: 0.1-20% braking time: 0.1±20 sec, arbitrarily set.

Operation specifications:
Pattern operation: Multi-step setting: 8 steps, accel./decel. time selection possible at the same time
Interlock ratio: In the case of remote operating mode F = AX + B + C X: Frequency setting input, C: AUX-input F: Output, A: ±0.001-10.000, B: ±0.00-440Hz
Frequency limit: Upper/lower limit setting possible of F (above)
Frequency skip: 3-position setting (Jumping width can be arbitrarily set for each Skip frequency in a range of 0.1-10Hz.)
Slip compensation: Selection of operation/no-operation is possible.
Pattern-run function: Pattern-run is possible in 10 steps. Synchronization (process stepping)/asynchronization (internal timer operated) is possible.
Other functions: PID control, pick-up, auto-start, instantaneous power failure restart, reverse run prevention, traverse pattern for fiber machine.

External I/O:
Operation panel: 5-digit 7-segment LEDs: 8 mode/unit lamps. Local/remote selection possible, forward/reverse run operate selection possible. Reference and updating can be applied for all parameters. (Prevention of panel operation can be set.)

Sequence input: Forward/reverse run, emergency stop, fault reset, 5 point programmable inputs

Sequence output: Fault (relay 1-c contact), run (relay 1-a contact). In addition to the above, changeover to the following internal status signals is possible for operation and speed attainment: READY TO RUN, END OF PRELIMINARY CHARGING, REVERSE RUN, DIRECT OPERATION, CURRENT DETECTION .

+ VAT-3FD Control Functions and Parameter Settings  (pdf)

+ VAT-3FD Control Input-Output  (pdf)

+ VAT-3FD INSTRUCTION MANUAL  (pdf)

+ General Electric 2. Main page >

+ VFD Homepage > 

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