Operating instructions i550 cabinet frequency inverter | 44
© 11/2021 · EN · www.Lenze.com
Error code Description Classication Remedy Blocking time [s]
2250 CiA: Continuous overcurrent (inside the device) Trouble
• Check motor and wiring for short circuits.
• Check brake resistor and wiring.
• Check motor circuit (delta connection, star connection).
• Check setting of the motor data.
5
2320 Short circuit or earth leakage on the motor side Trouble
• Check motor cable.
• Check the length of the motor cable.
• Use shorter or lower-capacitance motor cable.
5
2340 CiA: Short circuit (inside the device) Trouble • Check motor cable for short circuit. 5
2350 CiA: i²*t overload (thermal state) Trouble
• Check drive dimensions.
• Check machine/driven mechanics for excessive load.
• Check setting of the motor data.
• Reduce values for slip compensation (P315.01, P315.02) and oscillation damping (P318.01, P318.02).
5
2382 Error: Device utilization (Ixt) too high Trouble
• Check drive dimensions.
• Reduce maximum overload current of the inverter (P324.00).
• In case of high mass inertias, reduce maximum overload current of the inverter (P324.00) to 150%.
3
2383 Warning: Device utilization (Ixt) too high Warning • Check drive dimensions. 0
3120 Mains phase fault Trouble
• Check mains connection wiring.
• Check fuses.
0
3210 DC bus overvoltage Trouble
• Reduce dynamic performance of the load prole.
• Check mains voltage.
• Check settings for the brake energy management.
• Connect brake resistor to the power unit and activate the integrated brake chopper.
(P706.01 = 0: brake resistance
0
3211 Warning: DC bus overvoltage Warning 0
3220 DC bus undervoltage Trouble
• Check mains voltage.
• Check fuses.
• Check DC bus voltage (P105.00).
• Check mains settings.
0
3221 Warning: DC bus undervoltage Warning 0
3222 DC-bus voltage too low for switch-on Warning
• Check mains voltage.
• Check fuses.
• Check mains settings.
0
4210 PU: Overtemperature fault Trouble
• Check mains voltage.
• Provide for a sucient cooling of the device (display of the heatsink temperature in P117.01).
• Clean fan and ventilation slots. If required, replace fan.
• Reduce switching frequency (P305.00).
0
4281 Heatsink fan warning Warning
• Clean fan and ventilation slots. If required, replace fan. The fans can be unlocked via locking hooks and can
then be removed.
0
4310 Error: Motor overtemperature Trouble
• Check drive dimensions.
• Check motor thermal sensor and wiring (terminals X109/T1 and X109/T2).
5
5112 24 V supply critical Warning
• Check optional external 24 V voltage supply (terminal X3/24E), if connected.
• Check mains voltage.
0
5180 24-V supply overload Warning • Check 24 V output and digital outputs for earth fault or overload. 0
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