SIEMENS 420| All Parameter Setting ( MICROMASTER 420 ) Settings 10HP 7.5kw |Simans 420

Nice — I’ll give you a compact, practical parameter checklist for a Siemens MICROMASTER 420 plus two example parameter sets you can copy: one for an 18.5 kW (≈25 HP) motor and one for a 7.5 kW (≈10 HP) motor (both 400 V / 50 Hz). I’ll call out the exact MM420 parameter numbers you’ll most likely need to change and why. I’m citing Siemens’ official parameter list and manuals so you can verify details.


---SIEMENS 420| All Parameter Setting ( MICROMASTER 420 ) Settings 10HP 7.5kw |Simans 420


Safety first (do this before you power up)

1. Isolate supply and verify lockout/tagout.


2. Only change parameters when the drive is stopped or per manual instructions.


3. Enter the correct user access level (P0003) if some parameters are hidden.


4. Keep the parameter list and motor nameplate at hand — enter the nameplate values for voltage/current/power/speed.




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Key MICROMASTER 420 parameters you’ll use (most common)

Below are the parameter numbers and a short note on what to set. If a parameter isn’t present on your unit, consult the MM420 parameter list for your software version.

P0003 — User access level
Set to 2 (standard) or 3 (service) to get access to advanced params.

P0100 — Motor nominal frequency (Hz)
Typical: 50 or 60 (match motor nameplate).

P0101 — Motor nominal voltage (V)
Enter motor nameplate voltage (e.g., 400 V line-line).

P0102 — Motor nominal current (A)
Enter the motor nameplate rated current (critical for motor thermal protection). Do not guess — use the plate number. (Example approx values shown below.)

P0103 — Motor nominal power (kW)
Enter nameplate kW (or HP converted to kW).

P0104 — Motor nominal speed (rpm)
Enter motor synchronous or rated rpm from nameplate (e.g., 1500 or 3000).

**P0200 / P0201 — Min / Max

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