INVT Goodrive350-19 Series Operation Manual page 56

Goodrive350-19 Series VFD for Crane
In closed-loop mode, if the holding brake slip fault delay P93.01 is greater than 0, the holding brake
slip detection function is enabled. During torque verification, if the motor (encoder) speed is close to
the holding brake release frequency and the situation duration exceeds P93.01, the holding brake
failure fault "bE" is reported. The torque verification and holding brake slip flowchart is as follows:
Torque verification
fault detection time
reached
Reports torque
verification fault
5.1.1.2 Holding brake parameters in speed mode
Holding brake control generally refers to holding brake control in speed mode, or at least one working
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
-44-
Commissioning guidelines
N
Brake slip fault delay
reached
Reports brake slip
fault