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236 UDC 3300 Controller Product Manual 4/00
8.3 Position Proportional and Three Position Step Output Calibration
Position proportional
control
When the UDC 3300 controller has a Position Proportional control output,
calibrate the controller so that the increase and decrease relays operate
properly with respect to the position of the external feedback slidewire.
Three position step
control
Three Position Step Control Output Models with Motor Position
Indication
(Model Numbers DC330X-EE-XXX-X2, DC330X-AA-XXX-02)
This model must have its output calibrated per the entire procedure to
ensure the displayed output (slidewire position) agrees with the final
control element position.
Three Position Step Control Output Models without Motor Position
Indication
(Model Numbers 330X-EE-XXX-X0, DC330X-AA-XXX-X0)
This model only requires that the “Motor Time” be entered as shown in
the calibration procedure. FULL CALIBRATION IS NOT REQUIRED.
Equipment needed
None
Connections
Apply power and allow the controller to warm up 30 minutes before you
calibrate. Leave all field wiring connected to the rear terminals.
Auto mode vs manual
mode
There are two ways in which to calibrate Position Proportional or 3
Position Step control:
AUTO mode or MANUAL mode.
Rules for auto mode vs
manual mode
The Auto-mode selection must be done at least once before the manual
mode will operate properly. Failure to use the Auto-mode procedure will
prevent the controller from going into automatic control mode.
Displayed values
During the Auto-mode calibration procedure, the values being displayed
are used only to indicate if the motor is still traveling. To view the actual
calibration value, use the manual mode after the Auto-mode is completed.
These values can be changed for purposes of tweaking the calibration.