Master/Slave Arrangement; Figure 25 Flow Diagram; Figure 26 Interconnection Diagram - Honeywell HercuLine 10260S Installation, Operation And Maintenance Manual

Master/Slave Arrangement

Introduction
With the motor positioner, the controlling signal for the actuator is a 4 mA to 20 mA from a current output
controller as shown in the flow diagram in Figure 25.
Unlike the position output controller, the current output controller must produce a continuous analog signal
or the actuator will revert to one of its failsafe states. Signal failure is not a problem since the available
failsafe settings allow you to set the actuator position on signal loss.
Basic Flow Control
When the process variable signal is below set point, the controller increases current (4 mA to 20 mA) to the
actuator input and opens the valve. Controller set point governs valve position to obtain desired flow rate.
SP
FIC
Current Output Controller
Revision 5 10260S HercuLine® Actuator Installation, Operation and Maintenance Manual
7/07
PV
Positioner & Actuator
Controller
4 to 20 mA
Position

Figure 25 Flow Diagram

+
4 to 20 mA
-

Figure 26 Interconnection Diagram

6. Control Applications - Master/Slave Arrangement
Linkage
MP
mA
10260S Series Actuator
Hot
Neutral
250 Ohms
Ground
1 to 5 VDC
Orifice Plate
FT
Valve
120/240
VAC
79