Sourcetronic ST600 - Commissioning Procedures for Closed-Loop Control, Position Control and Spindle Positioning

Frequency Inverter ST600 Series High-Performance Multifunction VFD Basic Operation Instructions
-121-
P05.44
HDIB high-speed pulse input
function selection
0: Set input via frequency
1: Reserved
2: Input via encoder, used in combination with
HDIA
0
P20.15
Speed measurement mode
0: PG card
1: local; realized by HDIA and HDIB; supports
incremental 24V encoder only
0
P18.00
Actual frequency of encoder
-999.9–3276.7Hz
0.0Hz
5.5.18 Commissioning procedures for closed-loop control, position control and spindle positioning
1. Commissioning procedures for closed-loop vector control of asynchronous motor
Step 1: Restore to default value via keypad
Step 2: Set P00.03, P00.04 and P02 group motor nameplate parameters
Step 3: Motor parameter autotuning
Carry out rotary parameter autotuning or static parameter autotuning via keypad, if the motor can be
disconnected from load, then it is users can carry out rotary parameter autotuning; otherwise carry out
static parameter autotuning, the parameter obtained from autotuning will be saved in P02 motor
parameter group automatically.
Step 4: Verify whether the encoder is installed and set properly
a) Confirm the encoder direction and parameter setup
Set P20.01 (encoder pulse-per-revolution), set P00.00=2 and P00.10=20.00Hz, and run the VFD, at
this point, the motor rotates at 20Hz, observe whether the speed measurement value of P18.00 is
correct, if the value is negative, it indicates the encoder direction is reversed, under such situation, set
P20.02 to 1; if the speed measurement value deviates greatly, it indicates P20.01 is set improperly.
Observe whether P18.02 (encoder Z pulse count value) fluctuates, if yes, it indicates the encoder
suffers interference or P20.01 is set improperly, requiring users to check the wiring and the shielding
layer.
b) Determine Z pulse direction
Set P00.10=20.00Hz, and set P00.13 (running direction) to forward and reverse direction respectively
to observe whether the difference value of P18.02 is less than 5, if the difference value remains to be
larger than 5 after setting Z pulse reversal function of P20.02, power off and exchange phase A and
phase B of the encoder, and then observe the difference between the value of P18.02 during forward
and reverse rotation. Z pulse direction only affects the forward/reverse positioning precision of the
spindle positioning carried out with Z pulse.
Step 5: Closed-loop vector pilot-run
Set P00.00=3, and carry out closed-loop vector control, adjust P00.10 and speed loop and current
loop PI parameter in P03 group to make it run stably in the whole range.
Step 6: Flux-weakening control
Set flux-weakening regulator gain P03.26=0–8000, and observe the flux-weakening control effect.
P03.22–P03.24 can be adjusted as needed.
2. Commissioning procedures for closed-loop vector control of synchronous motor