Accutrol ZPS-H Panduan Memulai Cepat - Halaman 4

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2e. Adjusting the Set Points and Delays using Insight

After the controller is tuned and operating at normal velocity set point, the technician should configure DI#1 as Normally

Closed, and set the delay period so the AVC as a fume hood controller switches set points safely according to the

customer's requirements. These adjustments are made in the Insight software by pressing the MODE button on the

Airflow Setpoint gauge and then select "Configure Control Setpoints" as shown below.

Caution: Be sure to have a

sufficient time delay to prevent the valve

from entering unoccupied mode while

the hood is in use.

In the Configure Control Setpoint window, Select Enable next to DI-1 and a drop-down table will appear. This is where

you select which velocity setpoints are used for each position of Digital Input #1. Since we are only using DI #1, there

are only two conditions to be concerned about, open and closed.

Based on the wiring instructions provided in the previous section, the ZPS-H contacts will be closed when presence is

not detected in front of the fumehood and open when presence is detected. For this example, the Face Velocity

Setpoints will change from 100 FPM to 80FPM when presence is no longer detected at the fume hood.

Note the 300 second out delay prevents the Fume Hood Controller from changing its face velocity setpoint to 80 fpm

until five minutes after the ZPS-H detects no movement.

2f. Verification

Once the ZPS-H is set up, verify that the Digital Input of the AVC is configured to trigger the setback to lower flow and

test entire system by walking in front of the hood to verify that the hood responds appropriately. Repeat walking test to

verify proper operation. (You may have to stand out of the area in front of the hood to give time for the AVC Fume Hood

Controller to revert to the Setback of the reduced velocity setpoint.)

When you are satisfied with the operation of the sensor, replace cover by engaging the cover on left side first then snap

down. Be careful not to change the position of the swivel sensor and move the sensor wires out of the way so they are

not pinched. The cover will not change the sensitivity of the ZPS-H.

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Replacing the Cover

For additional technical support please call Accutrol at 203-445-9991.

ZPS-H QUICK START GUIDE Rev. L 11/4/2020