Lenze i550 - Heavy Load Monitoring

Parameter
Address Name / seng range / [default seng] Info
0x6073
(P324.00)
Max current
(Max current)
0.0 ... [200.0] ... 3000.0 %
Maximum overload current of the inverter.
•
100 % ≡ Motor rated current (0x6075 (P323.00))
•
If the current consumpon of the motor exceeds this current limit,
the inverter changes its dynamic behaviour in order to counteract this
exceedance.
•
If the modied dynamic behaviour fails to eliminate the excess cur-
rent consumpon, the inverter outputs an error.
When 0x6078 (P103.00) (current actual value in %) exceeds 0x6073
(P324.00) (max. current actual value in %) the message 0x238A is dis-
played. This status is also displayed in the following network status word
bits:
•
0x400C:001 bit 14
•
0x400C:002 bit 2
Note!
This parameter is not idencal to the ulmate motor current I
ULT
.
•
The value set in 0x2D46:001 (P353.01) (Threshold) is a limit value for
synchronous motors to protect their magnets.
•
The value to be set here should always be considerably below the ul-
mate motor current.
10.8.8 Heavy load monitoring
If the apparent current of the motor exceeds a dened threshold value due to a heavy duty
state, a congurable error is triggered (incl. logbook entry).
Precondions
Monitoring is acvated as soon as the motor starts running. The monitoring can be deacva-
ted with the seng "No response".
Details
Exceedance of the dened threshold:
•
If the actual apparent current exceeds the congured threshold value, the delay me
encoder is started.
•
If the actual apparent motor current falls below the threshold value minus 5% (hysteresis -
not adjustable), the delay me encoder is set to zero.
Independent of the error response, the output signal (Heavy duty monitoring [84]) is trig-
gered:
•
If the actual apparent current of the motor exceeds the threshold for longer than the delay
me, the output signal is set to TRUE.
•
If the actual apparent current of the motor falls below the threshold value minus 5% (hys-
teresis), the output signal is set to FALSE.
•
If the delay me is set to 0 seconds, the output signal is immediately set to TRUE.
The error response is acvated according to its sengs:
•
If the actual apparent current of the motor exceeds the threshold value for longer than the
congured delay me, the selected error response is acvated.
•
When the error response is triggered, an entry is generated in the logbook (excepon:
Error response - Selecon [0]). 465337 ^ 635
Parameter
Address Name / seng range / [default seng] Info
0x4007:001 Heavy load monitoring: Error threshold
0.0 ... [200.0] ... 300.0 %
•
From version 05.02
When the threshold value for the apparent current of the motor is
exceeded, the delay me encoder is started.
•
100 % ≡ of rated motor current 40x6075 (P323.00).
0x4007:002 Heavy load monitoring: Delay me
0.0 ... [3.0] ... 999.9 s
•
From version 05.02
Seng of the delay me.
Conguring the motor control
Motor protecon
Maximum overload current of the inverter
241