topworx回讯器说明书(12)

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Inductive Sensors

Inductive Sensors: Options E2/E4

Calibration Procedure

perform switch calibration while an area is known to be hazardous. When installing a Valvetop product with P&F NAMUR sensors, use of a commercially available switch tester like P&F part# ST0-03 is suggested.

Calibration may be performed using a 24Vdc power supply.

Step 1: With valve in the CLOSED position, disengage the BOTTOM cam from the splined hub and rotate clockwise until SW1 activates. Release cam to re-engage splined hub.

Step 2: Rotate valve to the OPEN position. Disengage the TOP cam from the splined hub and rotate counter-clockwise until SW2 activates. Release cam to re-engage the splined hub.

Step 3: Cycle valve CLOSED and OPEN several times to insure switches will maintain calibration.

For Reverse Acting actuators:

Step 1: With valve in the CLOSED position, disengage the TOP cam from the splined hub and rotate counter-clockwise until SW2 activates. Release cam to re-engage the splined hub.

Step 2: Rotate valve to the OPEN position. Disengage the BOTTOM cam from the splined hub and rotate clockwise until SW1 activates. Release cam to re-engage the splined hub.

Repeat Step 3 above.

*When using the (4) and (6) switch options, determine which switches are to indicate OPEN and which indicate CLOSED and then use the same calibration steps as above.

**Switches may also be set at midpoint, or any point, of travel for Dribble Control, or any other logic necessary for the application.

P & F NJ2-V3-N Switch Assembly

Switch Option E2

Switch Option E4

Switch Option E6

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