Field configurable direction of travel and
control overrides
Adjustable deadband, zero and span
Compatible wth VB series valves
The new EAxx-A series actuators with integrated microprocessor
based electronics retain the reliable housing, motor and gear train
of the traditional EA series. They are ideal for use with our VB-7000
or VB-9000 series of valve bodies and many other commercially available
rotary shaft valve bodies with crankarms. They are used for proportional
control of combustion air dampers, valves and other similar applications.
Most factory assembled standard base models and options are NEMA 4
and UL/cUL listed. EA series units converted to EAxx-A series units
using field retrofit kits will not be agency listed. The EAxx-A series
is fully compatible with the range of valve bodies found in Section
3 of this catalog.
The Analog Input
Module
The microprocessor based integral control circuit accepts current,
voltage and resistance input signals. Calibration is field adjustable.
Control overrides allow forcing the actuator to either end of travel
on demand. Stroke lengths of 90° or 180° are switch selectable.
Other stroke lengths can be set using a simple pushbutton procedure.
Direction of travel is also field selectable. Default calibration
is 4 to 20mA. Other ranges are switch selectable. A plug-in option
board provides a 4 to 20mA position signal and two form C relays that
can be set to activate at any position.
Microprocessor based control