REFTHE / DRIVE WORKSHOP From symptom to configuration. A field console built around method: identify the family and firmware, separate command, reference and motor circuit, measure only under safe conditions, and record every approved change.
5 diagnostic matrices Analogue · Modbus · EMC User-entered OEM limits Local printable log
01 / DIAGNOSIS Symptom → check → source 02 / INTEGRATION Signals, buses and protection 03 / COMMISSIONING Scaling and OEM limits 04 / TRACEABILITY Parameters before and after DIAGNOSTIC MATRIX
Start from what happens. The same wording does not have the same meaning on every family. Each route remains tied to a declared model and source.
WILL NOT START
Status, command and reference Separate drive state, Run/Stop source, speed reference, enable/STO chain and motor circuit before changing parameters.
Collect exact display status command and reference source requested and actual frequency enables and interlocks Open diagnosis → OVERCURRENT
Locate the event phase Starting, steady operation and deceleration lead to different checks. A code alone does not prove a power-stage failure.
Available routes ATV320: OCF ABB ACH580: 2310 Danfoss FC 103: alarm table Compare routes → DC BUS / STOPPING
Regenerated energy or high supply Confirm when the event occurs. Ramp, overvoltage control and braking hardware depend on the drive, load and approved hardware.
Bounded references ATV320: ObF ACH580: 3210 never size resistors without the manual Open ObF case → COMMUNICATION LOSS
Local, option or supervisor Identify interface and protocol before looking for registers. Address, baud rate, parity, termination and timeout must belong to the same setup.
Collect protocol and physical port master and node address network diagnostics configured timeout action Open Modbus route → THERMAL
Drive or motor? Separate drive overtemperature, motor thermal model and PTC/KTY input. Do not repeatedly reset protection without a demonstrated cause.
Collect cabinet temperature and airflow current, frequency and load sensor type and wiring event history Open thermal route → REFTHE rule: a code is valid only for its declared family. Before changing a parameter, preserve its original value, unit, source and manual page.
INTEGRATION
Connect signals and networks without shortcuts. These are functional paths, not machine wiring diagrams. Terminal numbers and registers belong only to the selected family document.
0–10 V / 4–20 mA reference Controller AO → Drive AI → Min/max scale → Actual Hz
Confirm the electrical type at both ends. Check common, polarity, shielding and isolation. Record measured signal, displayed reference and actual frequency. Test only within OEM limits. Analogue reference guide → Modbus RTU / fieldbus Protocol → Port → Serial settings → Register map
Select the exact manual and revision. Align address, baud rate, parity and stop bits. Check topology, polarity and termination. Read status before enabling a remote command. Verified ABB example → Motor cable, shielding and EMC follow the hardware manual for routing and separation; terminate the screen as specified by the manufacturer; assess dV/dt or sine filters only with drive, motor and cable length identified; never insulation-test a connected drive. Isolation route → PTC, KTY, STO and protection identify the sensor actually installed; use the input or certified relay specified by the manufacturer; separate thermal protection from safety function; never bridge STO or enables simply to obtain a start. STO safety route → COMMISSIONING
Check declared scaling and limits. REFTHE does not calculate a compressor’s safe minimum frequency. Enter only limits taken from the compressor or machine manufacturer.
Enter OEM limits first. The result checks scaling only. It does not approve the compressor, motor or process.
Minimum frequency and oil return There is no universal value. Compressor technology, refrigerant, envelope, pressure ratio, oil management and machine sequence determine the limits.
BACKUP / COMMISSIONING
Record only what you changed. The worksheet remains in this browser and is not sent to REFTHE.
Parameter Original value New value Source / page
Add row Save on device Print / Save PDF Clear
PRIMARY SOURCES
Start from current manufacturer documents. Always confirm revision, rating, firmware, options and application.
