StoneL Quartz QX Series User Manual

StoneL publication 105406revA
7 QZ 70 en Quartz | 19
4.2 Intrinsically safe inductive proximity switches
4.2.4 P+F NAMUR sensors NJ2-V3-N (N)
Applicable models
(QN_N_, QX_N_)
Specications
Conguration (2) NAMUR sensors (EN 60947-5-6)
Operation NO/NC (cam selectable)
Current ratings Target present
Target absent
Current < 1.0 mA (LED = OFF)
Current > 3.0 mA (LED = ON)
Voltage range 5 - 25 VDC
Temperature range -40° to 80° C
Operating life Unlimited
Warranty Two years
Use with intrinsically safe repeater barrier. NAMUR sensors conform to EN 60947-5-6 standard.
Touch & Tune switch setting
All adjustments assume you are looking down on the top of the
sensors. The edge of the cam metal strip will be at the edge of the
sensor target when activation occurs. When the cam is released be
sure it slides fully onto the spline. One spline tooth setting is 4 ½°.
Valve closed to open in counterclockwise rotation (Fig. 1)
1. With the valve in the closed position, set the bottom cam so that
the metal activation strip is centered on the bottom sensor target
and the top cam is 180° from the bottom cam. Connect power
supply and ammeter to the bottom switch.
2. Lift up bottom cam and rotate counterclockwise until the
ammeter reads >3mA, then rotate clockwise until the ammeter
reads <1mA. Release the cam.
3. Move valve to the open position. Connect power supply and
ammeter to the top switch. Push down top cam and rotate
counterclockwise until the ammeter reads <1mA. Release cam.
Valve closed to open in clockwise rotation (Fig. 2)
1. With the valve in the closed position, set the bottom cam so that
the metal activation strip is centered on the bottom sensor target
and the top cam is 180° from the bottom cam. Connect power
supply and ammeter to the bottom switch.
2. Lift up bottom cam and rotate clockwise until the ammeter reads
>3mA, then rotate counterclockwise until the ammeter reads
<1mA. Release the cam.
3. Move valve to the open position. Connect power supply and
ammeter to the top switch. Push down top cam and rotate
counterclockwise until the ammeter reads <1mA. Release cam.
Bench test procedure
Use StoneL Light Read Tester or use a 24 VDC power supply and an
ammeter. No series load resistor required.
Wiring diagrams
2 NAMUR sensors (QN2N, QX2N)
4 NAMUR sensors (QN4N, QX4N)
bottom switch
top switch
BTM SW +
BTM SW -
TOP SW +
TOP SW -
SPARESSPARES
+
-
+
-
5
6
7
8
1
2
3
4
TOP SWBTM SW
bottom switch
third switch
second switch
top switch
BTM SW +
BTM SW -
3rd SW +
3rd SW -
2nd SW +
2nd SW -
TOP SW +
TOP SW -
+
-
+
-
3rd SW 2nd SW TOP SWBTM SW
-
+
-
+
SPARES
1
2
3
4
Caution: To prevent ignition of hazardous atmospheres,
replace cover before energizing the electrical circuits. Keep
cover tightly closed within operation.
Fig. 1 cam set for
normally open sensor
function
Fig. 2 cam set for
normally closed
sensor function
Reference controlled installation drawing #105193 for
proper intrinsic safety installation details. Find document
in the Appendix on page49 or at www.stonel.com/en/
products/quartz/installation-manuals
STOP

StoneL Quartz QX Series Specifications

General

Brand	StoneL
Model	Quartz QX Series
Category	Measuring Instruments
Language	English