OCF: overcurrent on ATV320
The drive signals an excessive current. The code does not show itself a failure of the Drives: it is necessary to distinguish start, regime and stop.
AlarmAn operating center for refrigerators and maintenance: parts from the problem, identify the drive, find the exact source and follow the controls in order.
Write the exact code, model or what the machine does not.
71 verified codes · 10 families
Start from what you read on the display or from what the machine does not.
Enter the real problem. Each path keeps model, state, measures and source before proposing the next verification.
Collect complete reference, size, power supply, firmware and application.
Start with the identification →02 / DISPLAYEnter exact code and tool, without transferring meanings between different families.
Search code and model →03 / COMANDOSeparate drive status, consents, command source, reference and engine circuit.
Open the diagnosis →04 / PROCESSOConnect frequency, demand, compressor limits and measured refrigerator conditions.
Test drive and process →05 / BACKUPAlign software, DTM, interface and family before transferring configurations.
Open software and backup →06 / SOURCESFilter documents for manufacturer, family, language and type of activity.
Explore 32 documents →The level organizes reading, does not allow to intervene. With a selected family, the cases of other families are excluded; the general routes remain indicated as method.
21 routes available
The drive signals an excessive current. The code does not show itself a failure of the Drives: it is necessary to distinguish start, regime and stop.
AlarmSCF1 reports a short circuit event. The Schneider FAQ also considers wiring, engine characteristics and adjustment data: does not authorize to declare failure the power stage from the code only.
AlarmThe Schneider source associates ObF with too fast braking, dragging load or high power. The choice of correction depends on the process and hardware installed.
AlarmOHF covers the superheat of the drive. It is distinguished from the thermal protection of the engine: the framework context and the load are part of the diagnosis.
AlarmIn the manual ATV320 SLF1 identifies the interruption of the local Modbus serial communication. It is not the generic code for all networks and all options.
CommunicationA ready drive does not necessarily receive the command from the terminal. The ATV630 FAQ distinguishes control from clamps and HMI control; the local/remote key may not be enabled.
CommandThe ATV630 FAQ describes a case of free wheel stop in three-wire control: the opening of the stop entry leads to nSt. It should be read the real configuration, not applied a universal scheme.
CommandThe ATV212 FAQ separates the command and reference channel. ATV320 or ATV600 settings should not be copied to this family.
CommandSoMove and the DTM library are distinct elements. The DTM must match the family; connection and compatibility must be verified in official documentation.
SoftwareThe first solution is to identify the device. Mark and power are not enough: serve complete reference, voltage, firmware and type of engine.
FoundationsSafety functions belong to the machine design. A safe stopping state does not constitute electrical insulation to intervene on the power parts.
SecuritySeparate process request, received signal, active reference and output of the drive. A percentage value on the controller does not show what the Drives receives.
RegulationThe output frequency is a given of the system, not a measure of the cooling capacity. The verification must connect request, drive and circuit conditions.
RefrigerationReplace a drive is not equivalent to copying few values. Power, motor, options, control and safety functions must remain consistent with the machine.
CommissioningThe code is only the starting point: status, alarm log, process conditions and software review serve to distinguish cause, consequence and stored block.
Diagnosis DanfossThe CDS 803 distinguishes warning, alarm and triple locked. Each code must be connected to size, software, compressor status and electrical conditions before reset.
Compressor diagnosticsA failure to start can depend on control circuit, engine data, speed limit, feedback or mechanical block; the sequence changes between open and closed ring.
CommissioningThe codes indicate run enable, run permissive or start interlock missing: the drive can be healthy but correctly blocked by the logic machine.
Command and permissiveThe output current exceeded the internal limit. The code does not distinguish itself from load, ramp, engine data, wiring or insulation.
Alarms ABB2330 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.
Motor circuitATV320 signals too low network voltage or a transient fall. It is necessary to distinguish the plant event from an internal condition before changing thresholds.
Power supplyDo not deduce meaning from a code like that. Search the exact family manual or collect data for assistance.
Go to manuals ·Each guide starts from a precise family and indicates revision or section of the source. Do not transfer parameters, thresholds or tests to another drive or compressor.
6 Practical guides verified available
How to read the Oil Return Management function without transferring times and frequencies from one compressor to another.
Programming Practical guides · Section 3.22.1 · Printed pages 188–190Open the verified guide →A track to distinguish process demand, relay status, short cycle protection and compressor rotation.
Programming Practical guides · group 25 · pages printed 170–180Open the verified guide →Preparation procedure to control motor and cable while maintaining the converter excluded from the test.
Hardware Manual 3AXD50000044839 · Electrical installation · Measuring the insulation · page 114Open the verified guide →From the hexadecimal code to the ordered master control, line EIA-485 and group 58, keeping the data of the network.
Firmware Manual 3AXD50000027537 · Fault tracing · code 6681 · page 154 review verifiedOpen the verified guide →How to store current, voltage, reference and I/O map that explain the context of failure.
Programming Manual · Detected fault History and I/O Map · printed pages 20–21 in v03 reviewOpen the verified guide →A sequence to validate sensor, scale, action and process response before fine calibration.
Official FAQ · PID Function Configuration; ATV600 EAV64318 manual · PID controller sectionOpen the verified guide →32 official PDFs from Danfoss, BITZER, Copeland, ABB and Schneider Electric. Recontrolled connections on 16 October 2026. Check reference, size, firmware and options. Italian and English revisions may differ: the revision number is shown on the manufacturer's page.
32 documents available
No corresponding document. Change manufacturer, family or search term.
Manual · EN · NVE41295
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iManual · EN · NVE41289
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iManual · EN · NVE50467
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iManual · EN · EAV64318
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iManual · IT · EAV64323
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iManual · EN · EAV64301
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iManual · EN · EAV64334
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iManual · EN · EAV64325
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iManual · EN · S1A53838
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iManual · EN · FC103-OPER
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Programming · EN · FC103-PROG
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Design · EN · FC103-DESIGN
Previous generation document: verify applicability to the installed drive.
Manual · EN · CDS803-OPER
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Design · EN · CDS803-DESIGN
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Programme · EN · CDS803-PROG
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Manual · DE / EN / FR · CB-110-4
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
EN / DE / FR · CB-111-3
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Software · DE / EN · CT-311-5
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Catalogue · EN · CP-110-1
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Manual · EN · EVM-INSTALL
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Manual · EN · EVH-INSTALL
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Starting · EN · EVM-QUICK
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Programming · EN · AE-1456
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Programming · EN · EVH-TECH
Edition for voltages 208–230 / 480 / 575 V: do not transfer data to different European variants.
Application · EN · AE8-1437
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Starting · MULTI · 3AXD50001324124
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iStarting · EN · 3AXD50000047658
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iManual · EN · 3AXD50000044839
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iManual · IT · 3AXD50000449927
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iProgramming · EN · 3AXD50000027537
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iProgramming · IT · 3AXD50000027596
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iCommunication · EN · 3AXD50000158607
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iFor the refrigerator circuit: Operating manual Danfoss FC 103 (EN) e. Check compressor and machine constraints separately.
Identifies family, firmware, interface and software version. Before transferring parameters, keep the configuration read and compare it to the approved one.
This directory keeps access to the resources of other brands. Schneider cases of this page do not interpret their fault codes.