Honeywell HercuLine 10260S, Installation, Operation And Maintenance Manual

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1. Introduction - Features
2 10260S HercuLine® Actuator Installation, Operation and Maintenance Manual Revision 5
7/07
Local Display
and Keypad
Handwheel
Terminal Cover
(Access to customer
connections)
Auto-Manual
Switch
Extended
Cover
Crank Arm and
Rod End
Top Cover
Figure 1 10260S Smart Actuator
Features
Non-contact Position Sensing (NCS) with True Shaft Position Indication
Non-contact position sensing eliminates maintenance problems and nuisance shutdowns that are common
with slidewire or potentiometer position sensing. The non-contact position sensor replaces the slidewire
and wiper assembly for position sensing. Once calibrated, the non-contacting position sensor requires no
maintenance.
The non-contact position sensing assembly consists of a position sensor and a bracket as shown in Figure 2.
The position sensor “spoiler” is connected directly to the output shaft, reflecting true shaft position. As the
output shaft rotates, the sensor “spoiler” rotates and the sensing circuit board detects the change in position.
Sensing is accomplished by changing the magnetic field created by the coils in the sensing circuit board.
There is no contact between circuit board and spoilers.