Siemens Sinamics repair, faulty motor phase 6SL3120-1TE23-0AA3: Difference between revisions
From Repair Wiki
(Created page with " {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Diagnosing and fixing a problem with a Siemens inverter Sinamics 6SL3120-1TE23-0AA3 that has a faulty output phase thumb|Healthy phase measurement, (negative on + DC link and vice versa to all phases should read this value) Figure 1 thumb|Dead phase measurement (figure 2) File:20240527 143123.jpg|thumb|The I...") |
No edit summary |
||
| Line 1: | Line 1: | ||
{{Repair Guide | {{Repair Guide | ||
|Device= | |Device=Sinamics 6SL3120-1TE23-0AA3 | ||
|Affects parts= | |Affects parts=IGBT module | ||
|Needs equipment= | |Needs equipment=Screwdriver set, soldering iron, soldering station, multimeter | ||
|Type= | |Type=Soldering, Part replacement | ||
|Difficulty= | |Difficulty=3. Hard | ||
}} | }} | ||
==Problem description== | ==Problem description== | ||
Latest revision as of 12:54, 27 May 2024
| Siemens Sinamics repair, faulty motor phase 6SL3120-1TE23-0AA3 | |
|---|---|
| Device | Sinamics 6SL3120-1TE23-0AA3 |
| Affects part(s) | IGBT module |
| Needs equipment | Screwdriver set, soldering iron, soldering station, multimeter |
| Difficulty | ◉◉◉◌ Hard |
| Type | Soldering, Part replacement |
Problem description
Diagnosing and fixing a problem with a Siemens inverter Sinamics 6SL3120-1TE23-0AA3 that has a faulty output phase
Symptoms
- Open line or short circuit from DC link to one or more of the output phases.
- Unstable operation of the motor, spins little bit and stops.
Solution
Diagnostic Steps
- First, check the IGBT
- Place your red probe on - DC link, and the black all the phases individually, they should measure close to the value on figure 1
- Do the same with black probe on + DC link
- If you measure all the values to be the same, then you have another issue, the IGBT is healthy
- If you measure OL or low/short on one of the phases, proceed to repair steps
Repair Steps
Replace the IGBT (Figure 3) and make sure the driving circuit isn't damaged, if you have a healthy phase you can compare since they're identical, measure the optocouplers/diodes.
After replacement the inverter should work properly.