VA9208-Bxx-x Series On/Off Electric Spring Return Valve Actuators Installation Instructions
10
Setup and Adjustments
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 20). 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 22
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 an 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.
Technical Specifications
!
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.
AVERTISSEMENT : Risque de
décharge électrique et dégâts
matériels.
Isoler et protéger chaque fil non utilisé
avant de mettre l'actuator sous tension.
Le non-respect de cette obligation
d'isolation et de protection de chaque fil
non utilisé risque d'entraîner des dégâts
matériels, des décharges électriques et
des blessures graves, voire mortelles.
Figure 22: Switch Trip Point Settings
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VA9208-Bxx-x Series On/Off Electric Spring Return Actuator (Part 1 of 3 )
Power
Requirements
-BGx Models
AC 24 V (AC 18 V to 30 V) at 50/60 Hz: Class 2 (North America) or Safety
Extra-Low Voltage (SELV) (Europe), 6.1 VA Running, 1.2 VA Holding Position
DC 24 V (DC 21.6 V to 28.8 V): Class 2 (North America) or SELV (Europe)
3.5 W Running, 0.5 W Holding Position
Minimum Transformer Size: 7 VA per Actuator
-BAx Models
AC 120 V (AC 102 V to 132 V) at 60 Hz: 0.05 A Running, 0.03 A Holding
Position
-BDx Models
AC 230 V (AC 198 V to 264 V) at 50/60 Hz: 0.04 A Running, 0.03 A Holding
Position
