INVT Goodrive350-19 Series Operation Manual page 22

Goodrive350-19 series VFD for crane
Description
performance
Automatic voltage
regulation
Fault protection
Braking protection
Brake control
Conical motor
Light load speed
Specialized
functions
Zero servo
Anti-sway
protection for the
trolley and long
communication, PROFIBUS communication and so on. Settings
can be combined and the setting channels can be switched.
The output voltage can be kept constant although the grid
voltage changes.
More than 30 protection functions, such as protection against
overcurrent, overvoltage, undervoltage, overtemperature, phase
loss, and overload.
The 30–110 kW VFD models provide the function of protecting
against braking resistor short connection, braking unit short
connection, and PB-PE short connection.
Embedded with hoisting-oriented brake logic, and integrated with
the torque verifying, brake feedback, zero position detection,
restart after braking functions, which meet the industrial
standards on the VFDs for cranes.
During startup, the magnetic flow is increased to release the
brake. During stop, the magnetic flow is decreased to close the
control
brake.
In closed-loop mode, the speed can be boosted and limited at
constant power status, and the speed is limited in stepped way.
In open-loop mode, if the simplified speed boost way is used, the
boost speed boosts to the set frequency in light load status; if the
speed is boosted or limited in constant power status, the speed is
limited in stepped way.
In closed-loop mode, if the VFD detects load downward slip, the
VFD automatically enters the zero servo state and outputs a
brake failure alarm. When a level-2 fault occurs, if load
downward slip occurs, the VFD automatically resets the fault,
enters the zero servo state, and outputs a brake failure alarm.
The CAN master/slave control card has been configured for the
lifting, trolley, and long-travel mechanism VFDs to implement
communication. An encoder needs to be mounted for the lifting
VFD so that the trolley and long-travel mechanism VFDs can
obtain the run status and height from the lifting VFD. Then the
given frequency and ACC/DEC time are output based on the
travel luffing and anti-sway algorithm. The trolley and long-travel
mechanism VFDs perform ACC/DEC run based on the
startup/stop command and given reference. In this way, the
stable state can be entered and swing disappears during stop.
Specifications
-10-
Product overview