User manual of EC160 elevator intelligent integrated machine Debugging at fast speed
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8.9.2 Adjustment of non-weighing compensation starting
1. Set P4_14 to be 1, in the time set by P4_15, P4_17, P4_18, P4_19, P4_20 and P4_21 are
valid.
2. P4_16 is the transition time from speed loop zero speed (load compensation) to the low
speed.
3. If the motor shocks in starting, increase P4_18 or P4_21.
4. If the elevator slides in starting, reduce P4_18 or increase P4_17. Increase P4_21 when
adjust the load compensation speed loop to eliminate the vibration.
5. No need to set position loop parameters. Too high P4_19 may cause motor vibration.
8.9.3 Adjustment of the speed loop
Speed loop PI has a close relationship with the inertia of the system. Setting the proportional gain and
integral time can adjust the dynamic response of the speed loop in vector control. Increasing the
proportional gain or decreasing the integral time can speed up the dynamic response of the speed
loop. However, too large proportional gain or too small integral time may easily cause oscillation to
the system or overadjustment. Too small proportional gain may easily cause steady oscillation to the
system and speed static error.
Shifting of the speed loop gain: when the running frequency is below P4_03, select P4_00 and P4_01;
if the running frequency is above P4_07, select P4_04 and P4_05; if the running frequency is
between P4_03 and P4_07, select thorough the linear change of the parameters .
8.9.4 Adjustment of the current loop
The adjustment of P4_08 and P4_09 has an effect on the dynamic response speed and control
performance of the system. Too strong PI parameters may cause high frequency oscillation to output
current and motor noise. Too weak PI parameters may cause low speed vibration to the motor.
The factory setting of the current loop meets the needs basically. Reduce P4_08 and P4_09 if high
frequency noise occurs and increase P4_08 and P4_09 if low-speed vibration occurs.
P4_08 is increasing with the sudden inductance of the motor and 4_09 is increasing with the
resistance of the rotor.
After setting P1_16/17 to non-zero, enable current loop switching.
Generally, the parameter needs no setting. The low/high speed has
different characteristics when the master changes with load, and then
current loop switching can be enabled (0: disabled).
After enabling current loop switching, set P4_08/09 to low-speed
current loop proportion and integral, P1_16/17 to high-speed current
loop proportion and integral.
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