Description About Torque Verification And Brake Slip - INVT Goodrive350-19 Series Operation Manual

Goodrive350-19 series VFD for crane
Open/closed loop vector control mode
FWD/REV
running
command
Set
frequency
Output
frequency
Current upper
limit
Torque verification
current
(P90.12/P90.13)
Output current
Torque upper
limit
FWD/REV brake
release torque
(P90.14/P90.15)
Torque current
Brake
opening
command
Brake
action
Brake
feedback

5.11.3 Description about torque verification and brake slip

After the VFD runs, the VFD output current or torque is checked before the brake release. If the VFD
output current or torque is greater than the output current or torque setting (P90.12 or P90.15) and
the situation lasts 60ms, torque verification succeeds. If torque verification does not pass after the
T1/T5 T2/T6
Torque
verifying is
OK
Close
Close
T1: Delay before forward brake release P90.20
T2: Delay after forward brake release P90.22
T5: Delay before reverse brake release P90.21
T6: Delay after reverse brake release P90.23
FWD/REV
P90.16/
brake release
P90.17
frequency
Release
Open
T3: Delay before forward brake closing P90.24
T4: Delay after forward brake closing P90.26
T7: Delay before reverse brake closing P90.25
T8: Delay after reverse brake closing P90.27
-77-
Commissioning guidelines
T3/T7 T4/T8
FWD/REV
brake closing
frequency
P90.18/
P90.19
Close
Close