REFTHEREFRIGERATION TECHNOLOGY

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TECHNOLOGY REFTHE · SCHEDA 20
ACH580 · fault 2330/2340 · separate motor circuit

ACH580 2330 / 2340: dispersion or short circuit

2330 oriented towards a ground dispersion; 2340 towards a short circuit in the engine or cables. The test must exclude the drive from the measuring circuit.

Family
ACH580 · fault 2330/2340 · separate motor circuit
Code or symptom
2330 · 2340 · Earth leakage · Short circuit
Topic
Motor circuit
Objective
Demonstrate the cause before changing parameters or replacing components.
SINTESI

The case in 60 seconds

What does it mean?

2330 oriented towards a ground dispersion; 2340 towards a short circuit in the engine or cables. The test must exclude the drive from the measuring circuit.

First data to be stored

Photograph code and auxiliary code, then stop the machine without attempting repeated resets.

Diagnosis

The code or symptom directs research, but does not show the fault component alone.

METODO

Diagnostic map

Follow the rows in order. Each phase must produce evidence before moving to the next.

PhaseControlsEvidence to obtainNext decision
01Recognize and collect
  • Photograph code and auxiliary code, then stop the machine without attempting repeated resets.
  • Retrieve schema, hardware manual of the size and instructions of the engine builder or compressor.
Event context and complete initial data.If a data is missing, do not reset to attempts: complete the initial picture first.
02Check and separate hypotheses
  • Isolate and disconnect the engine circuit correctly from the drive; controls wiring errors and absence of capacitors or suppressors on the cable.
  • Measures isolation only on the separate engine circuit, with voltage and limits provided by OEM.
External causes, configuration, circuit and separate process.If the data does not match, return to the correct schema and revision before changing parameters.
03Interpret and demonstrate
  • For 2340 it locates the short stretch separating cable and motor according to the procedure; use the auxiliary code on the frames that predict it.
  • After repair check PE continuity, locks, insulation and connections before the controlled power-cycle.
Cause supported by repeatable data and authorized evidence.If the cause is not proven, stop changes and involve manufacturer, OEM or machine manager.
CAPITOLO 01

Reading and observation

Recognize and collect

  1. Photograph code and auxiliary code, then stop the machine without attempting repeated resets.
  2. Retrieve schema, hardware manual of the size and instructions of the engine builder or compressor.
Result of the chapter

Event context and complete initial data.

If the result does not match

If a data is missing, do not reset to attempts: complete the initial picture first.

CAPITOLO 02

Qualified technician

Check and separate hypotheses

  1. Isolate and disconnect the engine circuit correctly from the drive; controls wiring errors and absence of capacitors or suppressors on the cable.
  2. Measures isolation only on the separate engine circuit, with voltage and limits provided by OEM.
Result of the chapter

External causes, configuration, circuit and separate process.

If the result does not match

If the data does not match, return to the correct schema and revision before changing parameters.

CAPITOLO 03

Specialist deepening

Interpret and demonstrate

  1. For 2340 it locates the short stretch separating cable and motor according to the procedure; use the auxiliary code on the frames that predict it.
  2. After repair check PE continuity, locks, insulation and connections before the controlled power-cycle.
Result of the chapter

Cause supported by repeatable data and authorized evidence.

If the result does not match

If the cause is not proven, stop changes and involve manufacturer, OEM or machine manager.

ERRORI FREQUENTI

What to avoid

  • Use repeated resets as a diagnostic test.
  • Transfer codes, thresholds or parameters from one Drives family to another.
  • Change a protection before connecting symptoms, measurement and phase of the cycle.
  • Do not apply meggers or proof of stiffness through the drive. ABB motor-related thresholds do not automatically apply to other compressors.
COLLAUDO

When the problem is really solved

The separate test identifies and removes dispersion or short; circuit and protections are consistent and the drive completes the cycle without 2330/2340.

  • The cause is supported by data and not only by the momentary absence of the alarm.
  • The cycle that generated the problem has been repeated in authorized conditions.
  • Final configuration, measurements and outcome are consistent with applicable machine, drive and documentation.
PRIMARY SOURCES

Applicable documents

Always check size, firmware, options and revision. These sources do not extend the case to other families.