Auto/Manual Switch; Self-Locking/Releasing Gear Train; Motor; Manual Operation - Honeywell HercuLine 10260A Installation, Operation And Maintenance Manual

adjustable by means of a span control. A bias offset may also be induced between master and follower by
means of a zero adjustment. For follower operations in master-follower systems, the master actuator
retransmitting slidewire can range from 100 ohms to 1000 ohms. The Motor Positioner is a printed circuit
board that is integrally mounted in a 10260A Series Actuator terminal cover. See Figure 1-2. The terminal
cover is gasketed to provide weather resistance.

1.3.5 Auto/Manual Switch

The Auto/Manual electric handswitch with auxiliary contacts indicating an "Out-of-Auto" position is
available for local electric control.

1.3.6 Self-Locking/Releasing Gear Train

The worm gear output combination is self-locking and self-releasing and maintains position upon loss of
power. It is designed to hold greater than two times the rated output torque in a back-driving condition.
This design provides superior reliability without the maintenance associated with other self-locking and
brake mechanisms.

1.3.7 Motor

A 100 % duty cycle synchronous induction motor provides crisp and responsive movement for precise and
accurate positioning. The very low current draw during operation or in stall combined with the no-burnout
characteristics of the motor result in low maintenance, high reliability, and long life.

1.3.8 Manual Operation

A manual handwheel is provided for positioning of the actuator during power outages or initial installation.
The design of the handwheel allows for positioning of the actuator safely under full load conditions.

1.3.9 All Position Mounting

Honeywell 10260A actuators may be mounted in any orientation making retrofit in tight locations easier.

1.3.10 Field Reversible

NCS: As factory shipped, the actuator is set for counter-clockwise rotation. By changing a jumper and
switch, the actuator can be set for clockwise rotation. Re-calibration is not required.
Film Potentiometer: As factory shipped, the actuator is set for counterclockwise rotation. By changing a
switch and interchanging the film potentiometer leads, the actuator can be set for clockwise rotation. Re-
calibration may be required.

1.3.11 Customer Connections

The 10260A now has dedicated wiring terminals for ease of installation. See section 3.4.2 Customer
Connections for specific placement.

1.3.12 Warranty

The 10260A actuator warranty is effective for 30 months from the date of shipment or 24 months from the
date of installation whichever comes first.
2/03 10260A Series Actuators – Installation, Operations, and Maintenance
Introduction
3