VA9208-GGx-x Series Proportional Electric Spring Return Valve Actuators Installation Instructions
11
Figure 21 shows the optional Auxiliary Switch Wiring.
Using Conduit
All VA9208 Series Actuators accept 3/8 in. trade size
flexible metal conduit.
1.
Feed the actuator cables through the field-supplied
conduit.
2.
Push the conduit into the holes in the actuator and
secure it with the supplied 10-32 x 9/16 in. screws,
as illustrated in Figure 22. The product label marks
the position of holes for the screws. Drive the
screws through the product label in the marked
positions. Drive the screwhead flush with the plate
to secure the conduit.
Setup and Adjustments
Mode Selection Switch
Actuators have an external mode selection switch to
calibrate, select input signal range, and reverse control
logic. The switch is accessible from both A and B sides
of the actuator as illustrated in Figure 23. Actuators are
delivered in Direct Acting (DA), DC 0 to 10 V input
signal mode. To change to Reverse Acting (RA) mode,
move the mode selection switch from DA to RA. The
input signal range is selectable between DC 0 to 10 V
or DC 2 to 10 V. If the CAL function is not used, both
input signal ranges are proportioned across the full
rotation range of 0 to 100% rotation.
For example, if a DC 0 to 10 V input signal is selected
and the rotation range is limited to 75°, the rotation
range limit will be reached at DC 8.3 V
.
Control Response
The installation side of the actuator and the position of
the mode selection switch combine to determine
control response from the actuator. See Figure 24.
IMPORTANT:
Careful workmanship is required to
secure flexible metal conduit. Cut the conduit end
perpendicular to its axis. Insert the cut end into the
bottom of the holes in the actuator and hold the
conduit in place while securing it with the screws
provided. Check a completed installation by pulling
on the conduit to ensure its retention.
Figure 21: Optional Auxiliary Switch
F
IG
:
A
X
_
S
W
C
T
H
COM NC
NO
COM
NC
NO
Figure 22: Adding Flexible Metal Conduit
Figure 23: Mode Selection
mo
des
el
Side A of Actuator
Side B of Actuator
DA
2-10
0-10
0-10
2-10
+
+
CAL
2-10
0-10
0-10
2-10
+
+
CAL
2-10
0-10
0-10
2-10
+
+
CAL
RA
RA
DA
Figure 24: Control Response
F
IG:
M
9
2xx
GG
x
_
C
tr
lR
spn
s
Input Signal
Mode Selection Switch
Installation Side
Increasing
Decreasing
Rotation Position
0-10 V
Direct
Acting
Reverse
Acting
0-10 V
0° is the spring return position.
*
Feedback
Direction
0.0 V 1.7 V 3.3 V 5.0 V 6.7 V 8.3 V 10.0 V
2-10 V
2-10 V
10.0 V 8.7 V 7.3 V 6.0 V 4.7 V 3.3 V 2.0 V
2-10
0-10
0-10
2-10
+
+
CAL
2-10
0-10
0-10
2-10
+
+
CAL
RA
DA
DA
2-10
0-10
0-10
2-10
+
+
CAL
RA
