Product Overview

VA9208-xxx-x Series Electric Spring Return Valve Actuators Product Bulletin 3
Operation
VA9208-xxx-x Series Actuators provide 95°of rotation.
A graduated scale from 0% to 100% and a position
indicator provide visual indication of stroke. A manual
override allows manual positioning and temporary
locking of the actuator output hub. Restoring power
and control signal to the actuator automatically
releases the manual override the first time the actuator
is commanded to advance past the locked position.
When power fails during service, the mechanical spring
return system returns the valve to the home position.
VA9208-GGx-x Series Proportional Actuators
The VA9208-GGx-x 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 VA9208-GGC-3 version is provided with two
integrated, line-voltage-capable auxiliary SPDT
switches. The Switch S1 switch point is fixed at 83%
closing, while the Switch S2 switch point is
independently and continuously adjustable from
74% to 5%. Auxiliary switches are double-insulated so
an electrical ground is not required.
VA9208-AGx-x Series On/Off and Floating
Point Actuators
The VA9208-AGx-x 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 VA9208-AGC-3 version is provided with two
integrated, line-voltage-capable auxiliary SPDT
switches. The Switch S1 switch point is fixed at 83%
closing, while the Switch S2 switch point is
independently and continuously adjustable from
74% to 5%. Auxiliary switches are double-insulated so
an electrical ground is not required.
VA9208-Bxx-3 Series On/Off Actuators
The VA9208-Bxx-3 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. Three different voltage
ratings are available for On/Off Actuators.
• VA9208-BGx-3: AC 24 V 50/60 Hz or DC 24 V
power
• VA9208-BAx-3: AC 120 V 50/60 Hz power
• VA9208-BDx-3: AC 230 V 50/60 Hz power
The VA9208-BAx-3 and VA9208-BDx-3 actuators are
double-insulated so an electrical ground is not
required.
The VA9208-BxC-3 versions are provided with two
integrated, line-voltage-capable auxiliary SPDT
switches. The Switch S1 switch point is fixed at 83%
closing, while the Switch S2 switch point is
independently and continuously adjustable from
74% to 5%. Auxiliary switches are double-insulated so
an electrical ground is not required.