3. Machine Adjustment Procedure
3-13
Set the Parameters 01-05 & 01-06 = 0 second
Acceleration time setting
Setting value
of Parameter
01-05
0.00 – 600.00 seconds
Deceleration time setting
Setting value
of Parameter
01-06
0.00 – 600.00 seconds
For low-pressure and low-speed conditions (within 30% of the rated values), use the “manual
operation” through the controller for the operation of each cylinder. During the operation, check
the pipe connection for leaks or strange noise in the pump.
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
Parameter 01-01=1
Source of operation command
Setting value
of Parameter
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 (Parameters 00-21, 00-23 , and 00-25) and Kp
values to small values ( 50.0)≦
Start the plastic injection operation. The “Target value” is low pressure (＜50Bar) and low flow
rate (＜30%)。
Press the “injection" button on the operation panel for the injection operation or the machine
will enter the pressure holding operation (depending on the position of the cylinder)
In the pressure holding state, use the software (VFD-Explorer) to observe the waveform.
Without causing the vibration of the motor, increase the speed bandwidth to the maximum
value 40Hz (Parameter 00-10).
In the pressure holding condition, if the pointer of the pressure gauge or the monitored
pressure waveform has no fluctuation, it means that the pressure is stably fed back. It is
allowed to increase the three Kp values.
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