Technical reference

Lenze 9300 fault codes

Causes and remedies for every error code, sourced from the official Lenze 9300 service manual (EDSVS9332S). Is your drive showing a specific code? Send us a photo — free diagnosis.

25 codes listed

OC1 Overcurrent

Motor cable short circuit / motor overcurrent

Short circuit of the motor cable, motor cable earth fault, or excessive capacitive charging current on a motor…

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OC2 Overcurrent

I×t overload (motor phase earth contact)

One of the motor phases has earth contact.…

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OC5 Overcurrent

I²xt overload

Frequent or too long acceleration with overcurrent, or continuous overload with Imotor > 1.05 × Ir.…

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OC6 / OC8 Motor load (I²xt)

Motor thermal load monitoring (I²xt)

The motor is continuously or repeatedly loaded above its rated current. OC8 is typically used as an advance wa…

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OU DC-bus voltage

Overvoltage in the DC bus

Braking energy is too high — the DC-bus voltage is higher than the value set in C0173.…

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LU DC-bus voltage

Undervoltage in the DC bus

The DC-bus voltage is lower than the value set in C0173 — usually a faulty or dropping mains supply.…

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LP1 DC-bus voltage

Motor phase failure

One of the current-carrying motor phases has failed (open circuit).…

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OH Temperature

Heatsink temperature > +90 °C

Ambient temperature > +40 °C / +50 °C, very dirty heatsink, wrong mounting position, or the current limit is s…

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OH3 / OH4 Temperature

Motor temperature > +150 °C (via resolver / encoder)

The motor is thermally overloaded: impermissible continuous current or frequent/too long acceleration.…

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OH7 Temperature

Heatsink temperature > C0122

Dirty heatsink, wrong mounting position, or the value set under C0122 is too low.…

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OH8 Temperature

Motor temperature > C0121 (via T1/T2, PTC)

No PTC/temperature contact connected, the value under C0121 is set too low, or the motor is thermally overload…

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CE0 Communication

Automation interface (AIF) communication error

Faulty or interrupted transfer of control commands via AIF — usually a loosely seated communication module/key…

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CE1 / CE2 / CE3 Communication

Process data communication error CAN1 / CAN2 / CAN3

The CAN_IN object receives faulty data or communication is interrupted — wiring, sender or interference on the…

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CE4 Communication

BUS-OFF state of the system bus (CAN)

Too many faulty telegrams on the system bus (CAN) — bus termination, cable shielding or PE connection issues; …

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Sd6 Encoder & resolver

Encoder error at X9 / X6 (C0034 = 1)

Cable interrupted, pin X9/8 not connected, or the current signal at X6/1, X6/2 is < 2 mA.…

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Sd7 / Sd8 Encoder & resolver

Absolute value encoder (initialisation / communication)

The absolute value encoder needs initialisation, the X8 cable is loose/broken, the encoder rotates during main…

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PR1 / PEr / PR0 Parameter & program

Parameter set error (checksum / incompatible)

The parameter set is corrupt or incompatible with the loaded software version (e.g. transferred from a higher-…

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EEr Parameter & program

EEPROM error

Internal EEPROM fault — often after a sudden power loss or ageing EEPROM.…

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CCr Internal

System failure

Internal control system failure (often triggered by strong EMC interference or a hardware fault).…

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P03 / P13 Internal

Temperature sensor error (heatsink / internal)

The sensor for detecting the heatsink / internal temperature is defective or its wiring is faulty.…

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P16 Internal

Following error

The angle difference between set and actual position is larger than allowed — insufficient torque, too-low gai…

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P19 Internal

Angle overrun

The position exceeds the allowed angle limit — usually related to position limit parameters or a mechanical pr…

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H07 / H10 / H11 Internal

Internal fault (memory / power stage)

Internal hardware fault in the memory or the power stage.…

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