SmartPlate EV Installation, Operation and Maintenance Manual
CHAPTER 4
– ADJUSTMENT
OMM-0147_C
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4.2.2
3-Way Valve Stroke Adjustment
If necessary, the 3-Way Control Valve stroke can be adjusted as follows:
3-WAY CONTROL VALVE
STROKE ADJUSTMENT
Instructions
1. Apply power and wait for the LED to go off
– approximately 10 seconds.
2. Press and release the
Reset
button to start the Auto-Stroke process. The LED should be
illuminated.
3. There are three options:
a) The actuator with travel in both directions to find its limit and then position itself
according to the demand. At the point the LED extinguishes, the process is
complete.
b) When the desired start position is reaches, press and release the
Reset
button. The
actuator will now go to the end position (you can also press and release the
Reset
button when it reaches the end position). At the point the LED extinguishes, the
process is complete.
c) Use a Philips screw driver and turn the adjustment screws on the actuator. This
ensures that the adjustment does not reset to full stoke if the unit is turned off.
NOTE
The valve can be manually positioned. Press and hold the clutch (shown in Figure 4.2.1-2,
above) while rotating the valve manually.
4.2.3
Zero and Span Calibration
3-WAY CONTROL VALVE
ZERO AND SPAN CALIBRATION
Instructions
1. Remove power and set all DIP switches to the OFF position (see Figure 4.2.1-4, above).
2. Apply power and
within 10 seconds
press and hold the
Reset
button until the LED blinks
once.
3. Release the
Reset
button. The LED is now constantly illuminated.
4. Apply a new minimum voltage between 0 and 7 VDC with an external 0 to 10 volt supply
(e.g., MEP).
5. Press and release the
Reset
button to memorize the new minimum voltage; the LED
blinks.
6. Apply a new maximum voltage between 3 and 10 VDC. This value should be greater than
the minimum voltage applied in Step 4.
7. Press and release the
Reset
button to memorize the new maximum voltage; the LED
blinks. The zero and span calibration is complete.
NOTE
To reset zero and span to 2 and 10 VDC (the default values), just reselect the analog control
signal mode.
