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the servo, press MDFY and using the UP and DOWN keys, set the target position. In this example
set the target position to 10.0 degrees. Press SAVE and the display will indicate the original position
and change as the servo is moving toward its target position.
The final display for servo 1 should look like the following:
Press the BACK key to return to the SERVO SETUP sub menu. Select SERVO 2 using the NEXT
key to move the SERVO 2 sub menu. Set the parameters for SERVO 2. Name this servo as GAS, tag
it to profile 1 and test its servo position for proper function and set its final position to 4.2 degrees.
When done the display should be as follows:
At this point press the BACK twice to move back to the top layer menu at the point at which we left
the top layer menu. Pressing the HOME key would have brought you back to the HOME screen.
SENSOR SETUP
The PPC4000 contains inputs for five analog 4-20 mA transducers. The process control variable or
the governing sensor for the boiler can only be SENSOR 1. The SENSOR SETUP menu is used to
configure the various sensors in the system as to type of sensor and range of sensor.
From the top layer menu move SENSOR SETUP to between the > < characters and press NEXT to
enter the SENSOR SETUP sub menu.
The parameter UNITS is to select units of measurement for all sensors. The options are ENGLISH
and METRIC. ENGLISH is PSI and degrees F. METRIC is BAR and mBar and degrees C. This set-
ting is global, meaning it applies to all sensors. Position SENSOR 1 and press the NEXT key to enter
the SENSOR 1 sub menu.
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1
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4
.
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3
>
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4
>
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CAUTION
On a previously commissioned system, care must be taken when replacing a servo motor believed to
be defective. Although every effort is made to calibrate each servo, there may be slight differences
from servo to servo. It is strongly recommended the installer, equipped with a combustion analyzer,
use ADJUST RATIO to step through each profile that uses the replacement servo. Each profile set
point should be checked and adjusted for proper combustion.
