Speed Following Error; Speed Difference; Trigger Time Speed Difference - KEB COMBIVERT F5 Instruction Manual

Parameter Description - Driving Profile
Speed Following
Error

Speed Difference

Trigger Time Speed
Difference
i
78
Triggers a drive fault if the actual motor speed deviates from the commanded
speed by more than the window defined in parameter LF.58 and for the
length of time defined in LF. 59. This function only works in close loop
speed control mode, ie. LF30=2 or 3.
Settings: 0 = Off (Use when LF.30 = 4)
1 = On, drive indicate speed following error when motor speed
varies from the set speed by the amount in LF.58 and for
the time in LF.59, output (X2A.18) turns off.
Sets the +/- window for the speed following error in percent of the
set speed.
Factory setting: 0, Off
Unit: %
Value range: 0...30%
Factory setting: 10%
Adjustment value: as necessary
Defines the length of time the following error can exist before the fault is
triggered.
Unit: Seconds
Value range: 0.0...1.0 sec.
Factory setting: 1.0 sec.
Adjustment value: as necessary
When trying to trouble shoot the cause of this fault, it helps to increase
LF.58 and LF.59 to the maximum values to prevent the fault from
triggering.