Chapter 3. Machine Adjustment Procedure | VFD-VJ
3-16
Selection of multi-function display
Setting value
of Pr.00-04
25: display the signal value of the analog input terminal OI with 0~10V
mapped to 0~100%
Send the 100% flow rate through the controller and then check the multi-function display page
to enter this value into Pr. 00-17
Send the 50% flow rate through the controller and then check the multi-function display page
to enter this value into Pr. 00-18
Send the 0% flow rate through the keypad panel and then check the multi-function display
page to enter this value into Pr.00-19
Step 5. Bleed the circuit and make sure if there is any plastic material in the barrel.
The machine can start operation only when there are no plastic materials inside the
barrel.
Pr. 00-09 = 1 for pressure control mode
Pressure control mode
Setting value
of Pr.00-09
0: Speed control
1: Pressure control
Set Pr.01-05 & Pr.01-06 = 0 second
Acceleration time setting
Setting value
of Pr.01-05
0.00 – 600.00 seconds
Deceleration time setting
Setting value
of Pr.01-06
0.00 – 600.00 seconds
When the air is bleeding completely, if there is any pressure fluctuation during operation,
please adjust the pressure control Parameter PI in accordance with the method described in
the “Description of Parameters”.
Step 6. Send operation command though the controller
Pr.01-01=1
Source of operation command
Setting value
of Pr. 01-01
0: Operation by using the digital keypad
1: Operation by using the external terminals. The Stop button on the
keypad is disabled.
2: Communication using RS-485. The Stop button on the keypad is
disabled
Step 7. Adjustment for injection/pressure holding
Heat up the barrel to the required temperature and set the controller in manual control mode.
Set the Ki values for the three stages PI to 0 (Pr.00-21, Pr.00-23 , and Pr.00-25) and Kp values
to small values ( 50.0)≦
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