INSTALLATION
WIRING TYPE AV2 POSITIONER
3 - 10
2. Based on the positioner type, perform one of the following
steps (Fig. 3-9):
AV11 or AV15: Connect 20.7 to 103.4-kPa (3.0 to 15.0-psig)
instrument signal to connection I.
AV12 or AV16: Connect 20.7 to 186.2-kPa (3.0 to 27.0-psig)
instrument signal to connection I.
AV2: Connection I is not used and should be plugged. If it is
not plugged, do so at this time.
3. Connect the output ports 01 and 02 as required to provide the
desired direction of rotation. Figures 3-10, 3-11, 3-12 and 3-13
show single acting tubing examples, and Figure 3-14 shows a
double acting tubing example. Air pressure to the 01 port
increases from zero toward full supply as the control signal (error)
increases. Air pressure to the 02 port decreases from full supply
toward zero as the control signal increases.
NOTE: The tubing arrangements shown in Figures 3-10, 3-11,
3-12, 3-13 and 3-14 are typical examples and may not reflect the
arrangement required for the application.
4. -NPT permanent instrument gages can be installed into the
gage ports for calibration requirements.
WIRING TYPE AV2 POSITIONER
Use the following procedure to wire the Type AV2 positioner:
1. Connect the four to 20-mA position demand signal wires to
terminals TB1-4 (+) and TB1-5 (-) of the terminal block (Figs. 3-2
and 3-15). For Type AV27 positioners, unscrew the I/P cover and
make the four to 20-mA connections to the positive (+) and nega-
tive (-) terminals. If installing a Type AV2___0__ positioner, go to
Step 4.
NOTE: If using a twisted shielded pair for signal wiring, ground
one end of the shielded pair at the source. Trim the other end of
the pair, located inside the enclosure, so that bare wires are not
exposed.
2. If equipped with an optional 4 to 20-mA position transmitter
(AV2___2__), connect a 24-VDC power supply in series with the
required output load (Table 1-7) to terminals TB1-1 (+) and TB1-2
(-).
3. If equipped with an optional potentiometric position transmitter
(Type AV2___1__), connect a power supply (maximum 35 VDC or
30 VAC) across TB1-1 and TB1-3. Use the signal across TB1-1
and TB1-2 or TB1-2 and TB1-3 for position transmitter feedback.
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