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Calibration
4-20 mA position transmitter
Instruction video available on www.pmv.nu/downloads
1. Set direction of rotation by placing potentiometer jumper in location A or
B. (Location A for counter clockwise CCW valve/actuator rotation (Direct),
location B for clockwise CW valve/actuator rotation (Reverse).
2. Set jumper X to the desired valve rotation angle, for 30 deg or 45 deg
rotation choose position 30,
For 60 deg or 90 deg rotation choose position 90, for 180 deg rotation choose
position 30 and for 270 deg rotations choose position 90.
For 30° deg - 45° deg choose pos 30.
3. Make electrical connections according to wiring diagram. Power supply
should be >9 to <28 VDC (24 VDC recommended).
4. Connect a 4-20 mA meter to testoutlet 1. Adjust potentiometer P1 20
revolutions CW & P2 20 revolutions CCW. Stroke actuator to the desired 4
mA position and check that current deflection is correct. Rotate gear wheel
2 with tool F5-22 or tip of a screw driver placed in one of the slotted holes
until minimum value is reached.
5. Adjust the output signal 4,0 mA with potentio-
meter P2. LED will illuminate when out put is 4
mA (±1%) or less. Stroke actuator to the desired 20
mA position and adjust the output to 20,0 mA with
potentiometer P1. LED will illuminate when out
put is 20 mA (±1%) or more.
6. Stroke actuator again, check and adjust 4 mA and
20 mA readings. Install front cover or set switches
first, as follows:
Switches & Sensors
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.
Mechanical switches
Proximity switches
C
NC
Upper
switch
NO
NO
Lower
switch
NC
C
Manual F5
Mechanical switches
Mechanical switches
1
C
2
Upper
3
switch
6
Lower
5
switch
4
C
1
NC
2
3
NO
NO
6
5
NC
4
4-20 mA position transmitter
Display
4-20 mA
-
+
4-20 mA
+
9
+
position
8
-
-
transmitter
NAMUR switches
Namur sensors
+
Upper
-
switch
+
Lower
-
switch
Power
Supply
24 VDC
2
3
5
6
– 1 –
2
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