VAC V200 POSITIONER Use and care manual

1
92125r3 4-20mA Installation
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V200 4/20mA Installation
1. Installthepotentiometer module(1)in
the designed section of the unit as
shown.Tighten thescrew thatsecures
the pot arm and spring.
Thepotgearwheel shouldbe aligned
andsecuredto thelargergearwheel(2).
2. Installthe4-20mA transmitter module(3)
into the designed position and tighten the
respectivescrews.
3. Whenusedfor the4-20mAfeedback,secure
thepotentiometer connector(4)tothe
transmitter(3).
NOTE: Make sure V200E/P has first been properly calibrated!
1. Powerupthe currentloop.
2. Connect a lowohmic amperemeter over thetest points(5).
3. Setthevalve/actuator to4mAor thezero
position.
4. Turnthefeedbackpotentiometer shaft(6)with
a screw driver until you read 3.5 - 4.5 mAon the meter.
5. Adjustthetrim potentiometer(7)markedzero
so that the meter reads 4mA.
6. Increase the input signal to a full
20mAor 100%.
7. Adjustthetrim potentiometer(8)marked
span until the meter reads 20mA.
8. Re-checkthezero position(4mA)and
make fine adjustments if necessary.
Avery basiccalibrationcan beaccomplished
without a meter, using the two LED’s.
Red LED lights up at 4mA, Green LED lights up at 20mA.
V200 4/20mA Calibration
CCV
7
5
8
Pot adjustment.eps
CCV
Power Supply: 7-30VDC
Load max 850 Ohms @ 24 VDC
6
6
6
5
CCV
CCV
1
24
4
1
3
2
3

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92125r3 4-20mA Installation2
NOTE: Make sure V200E/P has first been properly calibrated!
1.Turn theZERO-pot(2)more than30turns clockwise.
2. Turn the SPAN-pot(3) more than 30 turns counter clockwise.
3.Turn theFEEDBACK-pot(1)untilthe loweststeadymA-valueis achieved(approx.12.5mA).
Turn back til 13.0-14.0mA
4.Adjust the ZERO-pot counter clockwise to 4mA.
5.Openthe valve.
6.Adjust the SPAN-pot(3) clockwise to 20mA.
7.Closethe valve.
8. Repeat (steps 4-7) until the unit is properly set.
TROUBLE SHOOTING
4/20mA ”Reset” and Calibration
If you are unable to properly zero and span the feedback, the potentiometers
could be out of factory settings. In order to get back to factory settings please
follow the steps 1-8 below.