Overload Function; Ac Motor (18/19P6); Figure 1: Maximum Disconnecting Time Depending On The Load At Ac Motors; Figure 2: Output Current Depending Of Theoutput Frequency - KEB COMBIVERT P6 Instruction Manual

Technical Data
3.1

Overload function

(from inverter firmware 2.2.0.43)
The permissible overload time is considerably depending on the cooling conditions. The over-
load protection of the inverter is triggered by the following reasons:
• permissible heat sink temperature is exceeded => OH („Error! Overtemperature")
• exceeding the disconnecting time in accordance with the characteristic above => OL („Er-
ror! Overload")
3.1.1

AC motor (18/19P6)

Overload function (OL)
Disconnecting time [min]
20
15
10
5
0
100 110 120
Figure 1:
Overload function in the lower speed range (OL2)
in the lower speed range the permissible output current is depending on the output frequency.
Depending on the setting of parameter is14 the error E.OL2 is triggerd or the output current
is limited on exceeding the output current.
Output current [A]
120 A
100 A
80 A
60 A
40 A
20 A
0 A
0
Figure 2:
18
130 140 150 160 170
Maximum disconnecting time depending on the load at AC motors
10
Output current depending of theoutput frequency
180 190 200 210 220 230
19P6, 2 kHz
18P6, 4 kHz
Output frequency [Hz]
20
Load [%]