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.
AlarmFind the route.
Document the solution.
From the first recognition to specialist diagnosis: Schneider Altivar cases, official manuals and method for field work.
What do you want to leave?
14 routes · 3 levelsThe 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.
14 routes available
SCF1: distinguish engine circuit and configuration
SCF1 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.
AlarmObF: alarm during deceleration
The 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: high drive temperature
OHF 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.
AlarmSLF1: loss of local Modbus communication
In 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.
CommunicationATV630 ready, but RUN on the terminal does not start
A 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.
CommandnSt on ATV630: check the stop command
The 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.
CommandATV212: understand local, remote and reference
The ATV212 FAQ separates the command and reference channel. ATV320 or ATV600 settings should not be copied to this family.
CommandSoMove: connection, DTM and configuration
SoMove and the DTM library are distinct elements. The DTM must match the family; connection and compatibility must be verified in official documentation.
SoftwareI don't know the model. Where do I start?
The first solution is to identify the device. Mark and power are not enough: serve complete reference, voltage, firmware and type of engine.
FoundationsSTO and permissive: what to check without circumventing them
Safety functions belong to the machine design. A safe stopping state does not constitute electrical insulation to intervene on the power parts.
SecurityThe reference changes but the speed does not follow
Separate 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 compressor turns but the capacity fridge is low
The output frequency is a given of the system, not a measure of the cooling capacity. The verification must connect request, drive and circuit conditions.
RefrigerationReplacement and commissioning: minimum dossier
Replace a drive is not equivalent to copying few values. Power, motor, options, control and safety functions must remain consistent with the machine.
CommissioningNo case verified for this search
Do not deduce meaning from a code like that. Search the exact family manual or collect data for assistance.
Go to manuals ·Manual library Drives and compressors
32 official PDFs from Danfoss, BITZER, Copeland, ABB and Schneider Electric. Links verified on 10 September 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.
Programming and diagnostics
Manual · EN · NVE41295
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iInstallation
Manual · EN · NVE41289
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iSafety functions
Manual · EN · NVE50467
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iProgramming and diagnostics
Manual · EN · EAV64318
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iProgramming and diagnostics
Manual · IT · EAV64323
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iInstallation ATV630 / ATV650
Manual · EN · EAV64301
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iSafety functions
Manual · EN · EAV64334
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iSerial Modbus
Manual · EN · EAV64325
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iProgramming and diagnostics
Manual · EN · S1A53838
Industrial / HVAC drive: combined with the compressor to be checked with OEM.
Official page and reviews iInstallation and operation
Manual · EN · FC103-OPER
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Programming and parameters
Programming · EN · FC103-PROG
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Design and integration — 2015 edition
Design · EN · FC103-DESIGN
Previous generation document: verify applicability to the installed drive.
Installation and operation
Manual · EN · CDS803-OPER
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Drive design for compressors
Design · EN · CDS803-DESIGN
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Programming and parameters
Programme · EN · CDS803-PROG
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Operating instructions IP20 / IP55 / IP66
Manual · DE / EN / FR · CB-110-4
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Quick installation IP55 / IP66
EN / DE / FR · CB-111-3
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
BEST: connection and use of service tools
Software · DE / EN · CT-311-5
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Drives range for compressors — technical presentation
Catalogue · EN · CP-110-1
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
EVM installation
Manual · EN · EVM-INSTALL
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Installation EVH
Manual · EN · EVH-INSTALL
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Quick Start Guide
Starting · EN · EVM-QUICK
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Application Manual and Diagnostic EVM / EVM-Pro
Programming · EN · AE-1456
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Technical manual EVH triphase
Programming · EN · EVH-TECH
Edition for voltages 208–230 / 480 / 575 V: do not transfer data to different European variants.
Drive for alternative variable speed compressors
Application · EN · AE8-1437
Compressors: Check model, size, firmware and combinations approved by the manufacturer.
Quick installation IEC
Starting · MULTI · 3AXD50001324124
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iStarting of the HVAC program
Starting · EN · 3AXD50000047658
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iHardware manual ACH580-01
Manual · EN · 3AXD50000044839
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iHardware manual ACH580-01
Manual · IT · 3AXD50000449927
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iHVAC firmware manual
Programming · EN · 3AXD50000027537
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iHVAC firmware manual
Programming · IT · 3AXD50000027596
HVAC and integration: verify OEM compressor requirements; FMBT-21 module requires compatible hardware.
Official page and reviews iModule FMBT-21 Modbus/TCP
Communication · 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.
SoMove and DTM: two elements to align
Identifies family, firmware, interface and software version. Before transferring parameters, keep the configuration read and compare it to the approved one.
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Official downloadBookcase DTM
Altivar library, including ATV212 ↗Working procedure
Connection, backup and comparison →Another family? Start with his builder.
This directory keeps access to the resources of other brands. Schneider cases of this page do not interpret their fault codes.