Basic Flow Control; Figure 6-1 Flow Diagram; Figure 6-2 Interconnection Diagram - Honeywell HercuLine 10260A Installation, Operation And Maintenance Manual

10260A Series Actuators Installation, Operations, and Maintenance Manual

6.2.1 Basic Flow Control

When the process variable signal is below set point, the current output increases (4 to 20mA) opening the
valve.
At 4mA the zero adjustment on the motor positioner PCA is made for the low end of actuator travel.
At 20mA the span adjustment is used for the high end of actuator travel. The graph shows the linear
relationship.
The adjustment pots are located on the PCA. The slidewire/switch housing cover on the actuator must be
removed for access to all adjustments including the signal filter and deadband pots.
Controller set point governs valve position to obtain desired flow rate.
48 10260A Series Actuators – Installation, Operations, and Maintenance

Figure 6-1 Flow Diagram

Figure 6-2 Interconnection Diagram

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