Actuator Install Instructions

VA9208-AGx-x Series On/Off and Floating Point Electric Spring Return Valve Actuators Installation
Instructions
10
Setup and Adjustments
Mode Selection Switch
Actuators have an external mode selection switch to
reverse control logic. The switch is accessible from
both A and B sides of the actuator as illustrated in
Figure 22. Actuators are delivered in Direct Acting (DA)
mode and can be switched by the user to Reverse
Acting (RA) mode.
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 23.
Auxiliary Switch (VA9208-xxC-3 Models)
The VA9208-xxC-3 models include two integral
auxiliary switches with a switch adjuster accessible on
either face of the actuator (Figure 5). The factory
setting for Auxiliary Switch No. 1 is 83% closing, and
the nominal setting for Auxiliary Switch No. 2 is 10%
opening (relative to the 0 to 100% rotation range as
printed on the product label). See the Technical
Specifications table for the auxiliary switch ratings.
The switch point of Auxiliary Switch No. 1 is fixed. The
switch point of Auxiliary Switch No. 2 is independently
and continuously adjustable from 74 to 5% position.
For the most accurate switch positioning, see Figure 24
and use the method in the following example. To
change the switch point of Auxiliary Switch No. 2,
proceed as follows:
1. Position the actuator in the full spring return
position.
Note: The switch is factory set to trip when the
actuator reaches the 10% position.
2. Rotate the switch adjuster until it points to the
desired switch point.
3. Connect Auxiliary Switch No. 2 to a power source
or an ohmmeter and apply power to the actuator.
The actuator moves to the fully open position and
holds while power is applied.
4. Observe the switch point. If required, repeat Step 1
through Step 3.
Repair Information
A number of replacement parts are available; see
Table 3 for more details. If a VA9208 Series Electric
Spring Return Actuator fails to operate within its
specifications, replace the unit. For a replacement
electric actuator, contact the nearest Johnson Controls
representative.
Figure 22: Mode Selection
FIG:AGx_modsel
Side A of Actuator Side B of Actuator
DA
RA
DARA
Figure 23: Control Response
FIG:VA92xxAGx_CtrlRspns
Control Inputs
GRY ORN
Mode Selection Switch
34
Installation Side
!
WARNING: Risk of Electric Shock and
Property Damage.
Insulate and secure each unused wire
lead before applying power to the
actuator. Failure to insulate and secure
each unused wire lead may result in
property damage, electric shock, and
severe personal injury or death.
Figure 24: Switch Trip Point Settings
F
I
G
:
S
W
_
T
R
P