Brochure

VA9203-xxx-xx Series Electric Spring Return Valve Actuators Product Bulletin 3
VA9203-Bxx-2 Series On/Off Actuators
The VA9203-Bxx-2 Series Actuators provide on/off
control of VG1000 1/2, 3/4, and 1 inch ball valves in
HVAC systems. On/off control can be provided from a
manual switch, controller, auxiliary switch from a fan
motor contactor, or similar device.
Operation
VA9203-xxx-xx Series Actuators provide 95º of
rotation. A graduated scale from 0% to 100% and a
position indicator provide visual indication of stroke.
When power fails during service, the mechanical spring
return system returns the valve to the home position.
VA9203-GGx-2Z Series Proportional Actuators
The VA9203-GGx-2Z Series uses a brushless DC
motor controlled by a microprocessor. The
microprocessor drives the motor at constant speed,
independent of torque. The microprocessor also
monitors the brushless DC motor’s rotation to prevent
damage to the actuator in a stall condition. The
actuator can be stalled anywhere within its rotation
range without the need for mechanical end switches.
Power consumption is reduced in the holding mode.
The VA9203-GGC-2Z version is provided with one
integrated, line-voltage-capable auxiliary Single-Pole,
Double-Throw (SPDT) switch. The switch point is
independently and continuously adjustable throughout
the full range of actuator stroke. The auxiliary switch is
double-insulated so an electrical ground is not
required.
VA9203-AGx-2Z Series On/Off and Floating
Point Actuators
The VA9203-AGx-2Z Series uses a brushless DC
motor controlled by a microprocessor. The
microprocessor drives the motor at constant speed,
independent of torque. The microprocessor also
monitors the brushless DC motor’s rotation to prevent
damage to the actuator in a stall condition. The
actuator can be stalled anywhere within its rotation
range without the need for mechanical end switches.
Power consumption is reduced in the holding mode.
The VA9203-AGB-2Z version is provided with one
integrated, line-voltage-capable auxiliary SPDT switch.
The switch point is independently and continuously
adjustable throughout the full range of actuator stroke.
The auxiliary switch is double-insulated so an electrical
ground is not required.
VA9203-Bxx-2 Series On/Off Actuators
The VA9203-Bxx-2 Series uses a DC brush motor
controlled by analog electronics. The actuator can be
stalled anywhere within its rotation range without the
need for mechanical end switches. Power consumption
is reduced in the holding mode. Two different voltage
ratings are available for on/off actuators.
• VA9203-BGx-2: AC 24 V 50/60 Hz or DC 24 V
power
• VA9203-BUx-2: AC 85 to 265 V 50/60 Hz power
The VA9203-BUx-2 actuators are double-insulated so
an electrical ground is not required. The VA9203-BxB-2
versions are provided with one integrated,
line-voltage-capable auxiliary SPDT switch. The switch
point is independently and continuously adjustable
throughout the full range of the actuator stroke. The
auxiliary switch is double-insulated so an electrical
ground is not required.