Causes and remedies, 9300 servo plc, Appendix – Lenze Drive PLC Developer Studio 9300 Servo PLC (V8.x) User Manual

Page 115: 4 causes and remedies

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9300 Servo PLC

Appendix

3−13

L

9300 Servo PLC EN 5.0

3.5.4

Causes and remedies

Fault message

Description

Cause

Remedy

No.

Display

−−−

−−−

No fault

0011

OC1

Short circuit of motor cable

Short circuit

·

Search for cause of short circuit.

·

Check motor cable.

Excessive capacitive charging current in the
motor cable.

Use motor cable which is shorter or of lower
capacitance.

0012

OC2

Motor cable earth fault

One of the motor phases has earth contact.

·

Search for cause of short circuit.

·

Check motor cable.

0015

OC5

I x t overload

·

Frequent and too long acceleration with
overcurrent

·

Continuous overload with I

motor

> 1.05 x

I

rx.

Check drive dimensioning.

0016

OC6

I

2

x t overload TRIP (motor, C0120)

Current overload of the motor, e.g. due to:

·

frequent or too long acceleration
processes

·

impermissible continuous current

·

Check drive dimensioning.

·

Check setting of C0120.

x018

OC8

I

2

xt overload advance warning

·

Frequent and too long acceleration
processes with motor overcurrent.

·

Permanent motor overload with
I

motor

>I

rmotor

Check drive dimensioning.

1020

OU

Overvoltage in DC bus

Braking energy is too high.
(DC−bus voltage is higher than set in
C0173.)

·

Use braking unit or regenerative module.

·

Check dimensioning of the brake
resistance.

x030

LU

Undervoltage in the DC bus

DC−bus voltage is lower than the value
specified under C0173.

·

Check mains voltage.

·

Check power supply module.

x032

LP1

Motor phase failure

A current−carrying motor phase has failed.

·

Check motor.

·

Check motor cable.

·

Switch off monitoring (C0597 = 3).

The current limit value is set too low.

·

Set higher current limit value via C0599.

0050

OH

Heatsink temperature > +90

°C

Ambient temperature
T

u

> +40

°C or > +50 °C

·

Allow module to cool and ensure better
ventilation.

·

Check ambient temperature in the
control cabinet.

Heatsink is very dirty.

Clean heatsink.

Wrong mounting position

Change mounting position.

x053

OH3

Motor temperature
> +150

°C threshold

(temperature detection via resolver or
incremental value encoder)

Motor is thermally overloaded due to:

·

Impermissible continuous current

·

Frequent or too long acceleration
processes

·

Check drive dimensioning.

·

Switch off monitoring (C0583 = 3).

No PTC/temperature contact connected.

Correct wiring.

x054

OH4

Heatsink temperature > C0122

Ambient temperature T

u

> +40

°C or

> +50

°C

·

Allow module to cool and ensure better
ventilation.

·

Check ambient temperature in the
control cabinet.

·

Switch off monitoring (C0582 = 3).

Heatsink is very dirty.

Clean heatsink

Wrong mounting position

Change mounting position.

The value specified under C0122 is set too
low.

Enter a higher value under C0122.

x057

OH7

Motor temperature > C0121
(temperature detection via resolver or
incremental value encoder)

Motor is thermally overloaded due to:

·

Impermissible continuous current

·

Frequent or too long acceleration
processes

·

Check drive dimensioning.

·

Switch off monitoring (C0584 = 3).

No PTC/temperature contact connected.

Correct wiring.

The value specified under C0121 is set too
low.

Enter a higher value in C0121.

x058

OH8

Motor temperature via inputs T1 and T2 is
too high.

Motor is thermally overloaded due to:

·

Impermissible continuous current

·

Frequent or too long acceleration
processes

·

Check drive dimensioning.

·

Switch off monitoring (C0585 = 3).

Terminals T1 and T2 are not connected

Connect PTC/temperature contact.

x: 0 = TRIP, 1 = Message, 2 = Warning, 3 = FAIL−QSP

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