Eurotherm Drives 590 DRV Digital, Руководство по эксплуатации продукта

Страница: 297 / 318

590 DRV Digital DC Drive Product Manual
App. M - 17
Appendix M Special Blocks and Application Notes
M
Startup Procedure
The following procedures describe the steps for starting up CPW winders.
Speed Mode
Initial Setup
These steps customize the drive for the calibration phase.
1. Check that all parameters are set to the default values described in the installation section.
2. Set MIN DIAMETER to the core as a percentage of full roll. If there is more than one core size,
it should be set to the smallest, for example, if the smallest core is 3.5 inches and the maximum
full roll is 42 inches then MIN DIAMETER is:
3.5 / 42 * 100 = 8.33 percent
3. Set OVERWIND to ON by conn24 volts to terminal C6 (or via the MMI if C6 is being
used for some other function).
4. Save the parameters.
Check Parameters
Set Min Diameter
Min Diameter Calc
OVERWIND ON?
Save Parameters
Calibration
This section calibrates the drive in speed mode.
1. Connect 24 VDC to terminal C7, DIAMETER PRESET ENABLE, to force the diameter hold
to stay on (this is for initial calibration only).
2. Ensure C4 is OFF (tension mode) and monitor SPECIAL BLOCKS:: DIAMETER CALC.::
DIAMETER to see that the diameter is preset to core. If the diameter does not equal the mini-
mum diameter, momentarily 24 volts to C7, DIAMETER PRESET ENABLE.
3. Start up the drive as described in Chapter 4, that is, AUTOTUNE the current loop, optimize the
speed loop, etc. Use terminal A4, LINE SPEED REFERENCE, as the speed demand input.
4. Load an empty core into the winder and match the core surface speed to the line speed using the
590 encoder or tachometer calibration as appropriate.
C6 On
Ch 4. Startup Steps
C4 Off, Preset O.K?
Match Surf. Speed
Calib. Complete
Goto Tension Mode
At this point the drive and winder should be functioning correctly in speed control. When starting up turret winders,
repeat the above procedure for the second spindle.
Tension Mode
The winder is calibrated in two phases; first, the static losses are determined and, second, the dynamic losses.
WARNING
Some of the following procedures require manually turning or stopping the spindles. Any suggestions of
turning or stopping the winder spindle by hand while the motor is energized should only be performed
by experienced personnel who are capable of evaluating the potential hazards and who are totally
satisfied that the procedure is safe.
NOTE. Unwind applications require loss compensations to be negative.
Cur. Limit = 200%
Bipolar Mode On
Tension Enabled?
Tens & Tap SP = 0
Start Winder
Increase Input 2
1. Verify that CUR. LIMIT/SCALER is set to 200 percent and BIPOLAR MODE is ENABLED.
2. Set tension enable, C4, to ON.
3. Set TENSION SETPOINT, A5, and TAPER SETPOINT, A6, to zero.
4. Start the winder with the tension enabled by conn24 volts into terminal C3, RUN. The
winder should not turn because there is no tension demand and, as yet, no compensations.
5. Slowly increase SETUP PARAMETERS::SPECIAL BLOCKS::SETPOINT SUM 2::INPUT 2
(static compensation) until the spindle turns and then reduce it gradually until it just stops turn-
ing. Now the motor should have nearly enough current to make the spindle break away. It
should be possible to start and stop the spindle by hand with very little effort.
Static Losses
Compensation O.K?
Continued