ABB AV2 Manual

Calibration
Table B-1 presents calibration procedures for Type AV1 and
Type AV2 positioners in table format.
2. To adjust the zero, loosen the zero adjustment
setscrew (Fig. B-12) using a 3/32 inch Allen wrench.
1. Turn on supply air. Apply a 4-mA input signal to
the positioner. The actuator should be in the
closed position.
3. Turn the zero adjustment nut (clockwise moves
actuator toward minimum span) until the 0 radial
line on the cam intersects with the center of the cam
roller (Fig. B-4).
3. Turn the zero adjustment nut (clockwise moves
actuator toward minimum span) until the 0 radial
line on the cam intersects with the center of the cam
roller (Fig. B-4).
4. Tighten the zero adjustment setscrew. 4. Tighten the zero adjustment setscrew.
Span 1. Apply the following input signal pressures,
depending on the nomenclature type:
Types AV11 and AV15: 103.4 kPa (15.0 psig).
Actuator should move to its full open position.
Types AV12 and AV16: 186.2 kPa (27.0 psig).
Actuator should move to its full open position.
Span
1. Apply a 20-mA signal to the positioner. The
actuator should be in its full open position.
2. To adjust the span, loosen the span adjustment
screw (Fig. B-12) using a 3/32inch Allen wrench.
2. To adjust the span, loosen the span adjustment
screw (Fig. B-12) using a 3/32 inch Allen wrench.
3. Slide span adjustment assembly (Fig. B-12) until
the actuator moves to align the 100% radial line
with the center of the cam roller (toward pilot
valve increases span).
AV1 AV2 & AV27
Table B-1. Calibration Procedures
Figure B-12. Calibration Adjustments
1. Apply 20.7 kPa (3.0 psig) input signal pressure to
the positioner. The actuator should be in the
closed position.
Adj Procedure
Adj Procedure
Zero
2. To adjust the zero, loosen the zero adjustment
setscrew (Fig. B-12) using a 3/32 inch Allen wrench.
Zero
4. Tighten the span adjustment screw. 4. Tighten the span adjustment screw.
3. Slide span adjustment assembly (Fig. B-12) until
the actuator moves to align the 100% radial line
with the center of the cam roller (toward pilot valve
increases span).
12 AVI and AV2 POSITIONERS | SOI/AV12 RE V. A

ABB AV2 Specifications

General

Brand	ABB
Model	AV2
Category	Valve Positioners
Language	English