Flowserve PMV Valve Control System - Manual (Page 11)

Manual F5 – 11 –
Limit switches cams must be adjusted separately with valve in an open and
closed position. With the valve in fully open or closed position adjust the
lower cam 3 to desired position by rotating it with special tool F5-22 or by the
tip of a screw driver placed in one of the slotted holes on the cam. Stroke the
valve fully and repeat the procedure above to set the upper cam.
Stroke valve open/closed to check proper limit switch operation.
Switches & Sensors
Technical specifications
General
Conduit entries
2x 1/2 NPT or 2x PG 13,5 (M20)
Housing material Die cast aluminum
Surface treatment ED painting
Mounting According to VDI/VDE 3845
Fasteners Stainless steel A2/A4
Terminals 2,5 mm 2 (AVG 14)
Enclosure IP66, NEMA 4
Switches, mechanical
Type
Mechanical SPDT V3
Rating *6/2,5A 250 VAC *Res/Ind
Approvals CSA,UL,VDE
Temp range -20 ° C to 80 ° C (-4 ° F to 185 ° F)
Sensors, Namur
Type
Proximity DIN 19234 NAMUR
Load Current
≤ 1mA ≥
3mA
Voltage range 5-25 VDC
Hysteresis 0,2%
Temp range -20
°
C to 80
°
C (-4
°
F to 185
°
F)
Potentiometer
Out put
5k
Ω
(4k
Ω
at 90
°
)
Elements Conductive plastic
Power rating at 70
°
1 W
Linearity 1%
Resolution Essentially infinite
Temp range -20
°
C to 80
°
C (-4
°
F to 185
°
F)
4-20 mA position transmitter
Power supply
9-28 VDC (24VDC recommended)
Out put signal 4-20 mA
LED indication at 4 mA
±
1%
LED indication at 20 mA
±
1%
Resolution Infinite
Minimum rotation travel 30
°
Maximum rotation travel 90 °
Linearity <1% of full scale
Hysteresis <0,5% of full scale
Out put current limit 24 mA DC
Load impedance 800
Ω
at 24 VDC
Temp range -20
°
C to 80
°
C (-4
°
F to 185
°
F)
NAMUR switches
2
3
5
6
Upper
switch
Lower
switch
+
-
+
-
1
2
3
6
5
4
Upper
switch
Lower
switch
C
C
Mechanical switches
NC
NC
NO
NO
1
2
3
6
5
4
Upper
switch
Lower
switch
C
C
Mechanical switches
NC
NC
NO
NO
Weight
Standard enclosure
0.7 kg (lbs 1.5)
Explosion proof 2.1 kg (lbs 4.6)
Switches proximity
Contact rating
2 W or 2 VA @ 30 VDC/
VAC, 0.1 A
Maximum operating time 0.5 miliseconds
Breakdown voltage 200VDC
Contact resistance 0.2 Ohms
Switch type SPDT hermetically sealed
in one unit
Mechanical and
electrical life
>10 million operations
Proximity switches Mechanical switches Namur sensors