Specifications; Type Av 3/4 Positioner Specifications - ABB AV3 Instruction Manual

INTRODUCTION

SPECIFICATIONS

Property
Input Range
Type AV3
Type AV4
Voltage Supply (Type AV4
only)
Minimum
Nominal
Maximum
1
Input Impedance
Standard Stroke Range
(cam selection)
Type AV 1 positioner
Type AV 2 positioner
Gain
1,2
Accuracy
Resolution
1,2
Hysteresis
1,2
Repeatability
SPECIFICATIONS
1 - 6
Table 1-3 provides performance specifications of the Type AV3
and Type AV4 positioners. Tables
mance specifications for the position transmitters.
Table 1-3. Type AV 3/4 Positioner Specifications
4 to 20 mA DC (30 VDC maximum)
Computer DDC (direct digital control), solid state or contact closure
input.
Units have 50% range suppression and/or zero elevation capability.
Minimum pulse width test data taken at 20°C (68°F) and factory pre-
set fine speed adjustment. Operation at other fine speed adjustment
settings will require different minimum pulse widths. Operation at
colder temperatures may require longer minimum pulse widths.
Minimum Pulse Width
Coarse Speed
Adjustment Position
4
3
2
1
16 VDC
24 VDC
34 VDC
NOTE: Maximum 50 mA current draw.
<1.66 kΩ at 4 mA
<0.57 kΩ at 12 mA
<0.35 kΩ at 20 mA
12.7 to 50.8 mm (0.5 to 2.0 in.) linear, rotary input 45°
25.4 to 101.6 mm (1.0 to 4.0 in.) linear, rotary input 90°
NOTE: It is recommended that the 90° cam be used wherever possible (Type AV
sitioner).
Two adjustment levels by changing gain hinge spring.
0.70% of span typical; <0.90% of span maximum
<0.30% of span maximum
0.35% of span typical; <0.60% of span maximum
0.40% of span typical; <0.60% of span maximum
1-4 and 1-5
Characteristic/Value
Msecs
40
20
15
12.5
provide perfor-
2 po-