Section 14 • Slide Calibration

Overview

The Slide Calibration screen is used in calibrating the slide actuators and to establish Vission 20/20 control parameters. It is important that the operator uses cau- tion while operating in this screen, see Figure 14-1. Slide Calibration Screen. The normal safety checks that pre- vent the slide from colliding with the mechanical stops are overridden. When the calibration process is complet- ed and the operator exits the screen, Both actuator will return the slides back to their minimum positions.

Capacity Slide Valve Potentiometer

This section provides critical information and control pa- rameters related to the capacity slide actuator. The “% cap” display shows the actual value in percent of the ca- pacity slide with out any conditioning that might be ap- plied to the other capacity position displays. In addition,

this section displays the value of the actuator signals in millivolts in the “input Value” display box.

“-” Button:

When the operator presses and holds this button, the output associated with capacity slide decrease is energized. If the actuator does not turn in the cor- rect direction when this button is pressed, then the operator will have to alter how the actuator is wired to the panel.

“+” Button:

When the operator presses and holds this button, the output associated with capacity slide increase is energized. If the actuator does not turn in the cor- rect direction when this button is pressed, then the operator will have to alter how the actuator is wired to the panel.

Software limit setpoint:

The Vission 20/20 uses the “Min Limit” and “Max Limit” setpoint to define an area within the

Figure 14-1. Slide Calibration Screen

Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.8.5153

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Emerson 20/20 service manual Slide Calibration, Capacity Slide Valve Potentiometer

20/20 specifications

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