INVT Goodrive350-19 Series Operation Manual page 90

Goodrive350-19 series VFD for crane
torque verification time P90.30 is reached, the torque verification fault tPF is reported.
In closed-loop mode, if the brake slip fault delay P93.01 is greater than 0, the brake slip detection
function is enabled. During torque verification, if the motor (encoder) speed exceeds the set brake slip
speed threshold P93.00 and the situation duration exceeds P93.01, the brake failure fault bE is
reported.
The torque verification and brake slip flowchart is as follows:
Torque verification
fault detection time
reached
Reports torque
verification fault
Torque (%)
Torque verification
delay 60ms
Torque
verification time
P90.30
Frequency (Hz)
Enable brake
control
Brake system starts
checking
Torque reference
Brake slip speed limit
reference
N
Motor torque >
Torque
verification
reference?
Y
Torque verification
pass
Torque verification pass
Torque slip pass
Brake system allows to
open the brake
Start
Motor speed <
Slip speed limit?
Y
Torque slip pass
-78-
Commissioning guidelines
N
Brake slip fault delay
reached
Reports brake slip
fault