INVT Goodrive350-19 Series Operation Manual page 25

Goodrive350-19 Series VFD for Crane
Function description
Load position
Master/slave
application macro
Lifting and
horizontal moving
switchover
Frequency
decrease by
Low voltage
protection
Low-speed run
protection
Overload
protection
Eddy current
Brake feedback
Zero position
detection
Torque verification
open/closed loop
switchover
In closed-loop mode, an encoder is used to obtain load position
information.
Including power balance and speed synchronization between the
control
master and slave.
Hoisting Including lifting, horizontal moving, construction elevator, tower
crane slewing, moving, and user-defined application macros.
Three groups of motor parameters, control modes, and
application macros can be switched.
When the bus voltage is continuously low, the reference
frequency is decreased to keep the normal output torque of VFD.
voltage
When the bus voltage decreases transiently or the VFD quickly
stops due to power outage, the function is used to ensure the
hook does not slip. The low voltage protection function is
automatically disabled once the bus voltage restores to the
normal state.
The VFD reports the low-speed run protection fault when the
low-speed run time exceeds the allowed time. The prevents the
axial cooling motor from being damaged due to overheating
caused by long-time running.
In closed-loop mode, when overload occurs, upward lifting is
restricted.
The HDO outputs PWM waves to directly control eddy current.
control
When the brake control signal is inconsistent with the brake
feedback signal, the VFD handles the inconsistency according to
the brake status to ensure safety.
The zero position signal and running signal are mutually
exclusive.
The VFD verifies the current or torque before brake release. The
VFD performs brake release when the verification succeeds, and
the VFD reports the verification fault when the verification fails.
The closed-loop control mode can be switched to the open-loop
One key
control mode through terminals. When the encoder is faulty, the
open-loop control mode can be used. The switchover can get
response only in stopped state but not in running state.
Jogging After receiving a jogging command, the VFD can automatically
Specifications
-13-
Product overview