Reference for the MASSO servo drive parameters. Parameters are grouped by function (P00 to P08). Change them with MASSO Motor Studio .
Applies to
MASSO AC servo drives
Edit with
MASSO Motor Studio
Each parameter lists
Code, unit, range, default, setting mode, effective time
CAUTION
Check each parameter's effective time before changing it. Most P00 motor parameters need a drive restart. Communication, filter and control changes usually take effect immediately. The setting mode shows whether a parameter can be changed while running (Operation) or only when stopped (Stop).
Parameter groups Group Name Covers P00-xx Motor & driver Motor data, encoder, RS-485, braking, temperature P01-xx Main control Direction, control mode, command source, pulse logic, polarity, mode switching P02-xx Gain Speed, position and integral gain, feedforward, bandwidth, filters P03-xx Position Electronic gear, pulse scaling, in-position window, smoothing P04-xx Speed Speed scaling, acceleration and deceleration, limits, filtering P05-xx Torque Torque limits, scaling, filter, overload P06-xx I/O Digital outputs, analog input P08-xx Advanced functions Notch (trap) filters
P00 – Motor & driver Motor electrical data, drive hardware, communication, braking and temperature. Most P00 parameters need a restart to take effect.
Motor data These must match the motor nameplate.
Code Parameter Unit / range P00-00 Motor number 0–2000 P00-01 Rated speed rpm, 1–12000 P00-02 Rated torque 0.01 Nm P00-03 Rated current 0.01 A P00-04 Rotor inertia 0.01 kg·cm² P00-05 Motor pole pairs 1–50 P00-09 Rated voltage V P00-10 Rated power 0.01 kW P00-11 Maximum torque – P00-12 Maximum speed rpm
Motor electrical constants Code Parameter Unit / range P00-13 Stator resistance 1 mΩ P00-14 Stator inductance Lq 0.01 mH P00-15 Stator inductance Ld 0.01 mH P00-16 Line back-EMF coefficient 0.01 mV/krpm P00-17 Electrical time constant 0.01 ms P00-18 Mechanical time constant 0.01 ms P00-19 Current gain percentage 10–500%
Encoder Code Parameter Unit / range P00-07 Encoder type 0–1 P00-08 Encoder zero offset 0–360° – Encoder alarm masking: multi-turn alarm, battery alarm –
Communication (RS-485 / Modbus) These take effect immediately.
Code Parameter Unit / range P00-23 Slave station ID 1–255 P00-24 Baud rate selection 0–7 – RS-485 parity mode – P00-26 Modbus response delay 0–100 (0.1 ms)
Braking Code Parameter Unit / range P00-30 Braking resistor setting 0–2 – External resistor power and resistance, built-in resistor power and resistance, resistor heat dissipation coefficient –
Temperature and cooling Code Parameter Unit / range P00-40 Temperature compensation −20 to 20 P00-41 Over-temperature alarm 0–150 °C P00-42 Over-temperature warning 0–150 °C P00-43 Fan start temperature 0–150 °C P00-44 Fan fault setting 0–1
P01 to P05 – Control, gain, position, speed and torque Group Includes Purpose P01 Main controlRotation direction, control mode (position / speed / torque), command source, pulse input logic, signal polarity, mode switching How the drive reads commands and control signals P02 GainSpeed loop gain, position loop gain, integral gain, feedforward, response bandwidth, filters Servo loop response: stiffness, overshoot, oscillation, vibration. Adjust carefully. P03 PositionElectronic gear numerator / denominator, pulse scaling, in-position window, position arrival detection, command smoothing Position mode: how input pulses become motor movement P04 SpeedSpeed command scaling, acceleration and deceleration time, maximum speed limits, command filtering Speed mode response P05 TorqueTorque limits, torque scaling, torque filter, overload handling Torque mode output
For a guided gain adjustment, see the Motor Tuning step-by-step guide .
P06 – I/O Signal Example parameters Notes Digital outputs (DO) DO1 and DO2 function selection, DO3 / DO4 mapping Selectable signals include alarm, servo ready, position arrived and other status signals Analog input (AI1) Speed per 1 V (rpm/V), AI filter time constant, AI offset, AI deadband Used when an analog voltage is the command source
P08 – Advanced functions: notch filters Notch (trap) filters suppress mechanical resonance.
Code Parameter Range P08-24.x Trap enable 0–1 P08-30 Notch filter 1 frequency 50–5000 Hz P08-31 Notch filter 1 width 50–1000 P08-32 Notch filter 1 depth 0–1000 P08-33 to P08-38 Notch filters 2 and 3 As filter 1
INFORMATION
Notch filters 1 and 2 only work when P08-24 is enabled. Notch filter 3 is active once its frequency parameter is set.
Monitoring items (d00–dxx) Read-only, real-time values for diagnostics, such as motor speed, position, torque, current, voltage, temperature, alarm codes and internal status flags. View them on the Monitor tab in MASSO Motor Studio .
