Figure 16 Flow Diagram; Figure 17 Interconnection Diagram - Honeywell 2000 Series Installation, Operation And Maintenance Manual

Basic Flow Control
When the process variable signal is below set point, the controller increases current (4 to 20mA) to the
actuator input and opens the valve. Controller set point governs valve position to obtain desired flow
rate.
SP
FIC
Current Output Controller
Proportional Flow using Multiple Actuators
Refer to flow diagram in Figure 18 and interconnection diagrams in Figure 19. The controller governs
flow rate in one burner. Only that flow is measured. Since #2 and #3 motor positions receive the same
signal as #1 motor positioned, valves #2 and #3 will deliver the same amount of fuel. This is true when
the span and zero adjustment are all set the same as in curve 2 of the graph. Other relationships between
units exist if the span adjustment (3) for ratio or if the zero adjustment is changed (1) for bias.
Revision 6 HercuLine™ 2000 Series Actuator - Installation, Operation and Maintenance Manual
7/07
PV
Positioner & Actuator
Controller
4 to 20 mA
Position

Figure 16 Flow Diagram

+
4 to 20 mA
-

Figure 17 Interconnection Diagram

Orifice Plate
FT
Linkage
MP
mA
Actuator
See Figure
27 for jumper
location
Hot
Jumper W2
= Current
Neutral
250 Ohms
Ground
1 to 5 VDC
Burner Control/Flame Safety
Master/Slave Arrangement
Valve
120/240
VAC
27