KEB Combivert F5 Instruction Manual page 42

Parameter Description
LF.50 Drive OH Delay time
If a drive shall still be made despite a hot motor, a deceleration time between warning and triggering the excess
temperature error can be adjusted with this parameter. After the adjusted time has expired the inverter switches
off the modulation with error E.dOH.
Value range
0 s
1...120 s
LF.51 Standstill control
A wrong system position or an encoder which is not securely mounted may lead to dangerous conditions with
gearless synchronous machines. If the different between set and actual speed cross over the speed level of this
parameter the inverter will trip with "E.EF".
This parameter is mainly designed for the period of load transfer and starting.
To avoid failures caused by wrong system position or bad encoder mounting a combination with function ‚speed
deviation' LF.46, LF.47 and LF.48 is recommended.
Value range
0,00...8000,00 rpm
LF.52 KP start amplification
Value range
0...32767
LF.53 KP start timer
Value range
-0,01(oFF)...
50000,00 s
GB - 42
Setting Description
x After detection of motor excess temperature the current ride is still completed,
before the inverter switches off the modulation with „E.dOH".
After detection of motor excess temperature the adjusted time is waited for
before the inverter switches off the modulation with error „E.dOH".
Setting Description
auto
Setting Description
1100 The temporary proportional factor enables a better starting behavior at high
or static friction in the system. The duration is adjusted with LF.53 . A typical
LF.11 value here is 4000.
Setting Description
off The timer determines the duration of LF.52. A typical value here is 2 s.