BABBITT LS7000, Руководство пользователя

Страница: 15 / 17

www.babbittinternational.com Reference Manual
2021
15
4.3 Fail Safe Selection
The failsafe feature provides a “false alarm” in case of power outage or major component failures. When
properly selected, the failsafe feature can protect equipment or alert you of a unit failure.
Fail Safe High (FSH) means that the relay is energized when NO PRODUCT is touching the sensing
element. The green led indicates relay status and is on when the relay is energized. When product comes
into contact with the probe, the relay is de-energized.
Fail Safe Low (FSL) means that the relay is energized when PRODUCT IS touching the probe.
4.4 Sensitivity Calibration
The LS7000 should be calibrated when no material is touching the probe, when the unit is installed where
it will be used.
1. Observe the Red LED. If it is on, go to Step 3
2. If the Red LED is off, turn the sensitivity adjustment potentiometer clockwise (CW) until it comes
on.
3. Turn the sensitivity adjustment pot counter-clockwise (CCW) until the Red LED just goes out. This
sets the unit to its maximum sensitivity. If in your application this is too sensitive, you can turn the
sensitivity adjustment pot further CCW; usually ¼ to ½ turn is sufficient to reduce the units
sensitivity. Always bring the product into contact with the probe after calibration to assure proper
performance.
NOTE: The green LED indicates relay status. The relay is energized when the green LED is on.
SPECIAL CALIBRATION NOTES:
For some products, the LS7000 can be calibrated with product touching the probe. To do this, turn
the sensitivity adjustment pot CW until the Red LED just comes on and continue CW for 1/8 to ¼
of a turn. Always check to see if unit resets in the absence of product.
NOTE: Due to the wide variety of applications and possible control or alarm functions, the proper fail
safe selection will depend on your circumstances. Please call your distributor or the factory if
you need assistance.