Group 11 Quarter-Turn Rotary Actuators
Electrical Features
 Beck Drive Motor:
Precise, Reliable Control
Together with Beck’s control electronics and rugged gear train, Beck
motors provide the precise, reliable positioning required for modern
control loops.
- Never overheats or burns out, even under demanding modulating control or stalled conditions.
- Reaches full speed and torque in
less than 50 milliseconds and
stops within 25 milliseconds,
eliminating deadtime.
- Provides extremely accurate
positioning in modulating
applications.
- Will not coast or overshoot the
desired position.
- Low current draw of 0.16 A to 3.0 A, and therefore low power
consumption, eliminates the need for relays and permits the use
of uninterruptible power supplies.
- Maintenance-free with double-lipped, grease-sealed bearings.
 Electric Handswitch:
Time-Saving Local Operation
Dampers or valves may be operated at
their individual locations with the built-in
electric Handswitch. This saves time
during installation and troubleshooting,
allowing on-line adjustments to be
made quickly and easily by bypassing
the electronics in the drive and control
system.
The Handswitch also serves as an
electrical backup in the event of control system failure.
 Auxiliary and Over-travel Limit Switches:
Two over-travel limit switches and up to four auxiliary switches are
provided on Beck drives.
- SPDT switches rated for a
minimum of 6 A at 120 V ac,
(three times maximum motor
current for most models) to
ensure long life.
- Field-adjustable to operate at
any point in the drive’s travel
range.
- May initiate secondary functions
or provide remote indication of
drive position.
- Eliminates unreliable and
maintenance- intensive proximity
switches.
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