Honeywell herculine 2000 User Manual
Burner Control/Flame Safety
Split Range
Split Range
26
HercuLine™ 2000 Series Actuator - Installation, Operation and Maintenance Manual
Revision 7
7/08
Split Range
The HercuLine
®
2001/2002 actuators can be set up to operate within a narrow input range (for example,
4 to 12mA input) in certain applications. The procedure in Table 5 describes how to set up an actuator
to operate as part of a split valve configuration.
to operate as part of a split valve configuration.
Table 5 Split Range Set Up Procedure
Step
Action
To Set Actuator span to operate from 4 to 12 mA input.
1
Enter Set Up mode by pressing SET UP key
2
Select SET INPUT group
3
Press FUNCTION key until INP HI (on lower display) is selected.
4
Set INP HI value to 50.0
5
Press FUNCTION key to select INP LO and set value to 0.0
6
Press DISPLAY key to exit Set Up mode.
To Set Actuator span to operate from 12 to 20 mA input.
1
Enter Set Up mode by pressing SET UP key
2
Select SET INPUT group
3
Press FUNCTION key until INP HI (on lower display) is selected.
4
Set INP HI value to 100.0
5
Press FUNCTION key to select INP LO and set value to 50.0
6
Press DISPLAY key to exit Set Up mode.
ATTENTION
Be sure to review failsafe strategy for your process application.
Master/Slave Arrangement
Introduction
With the motor positioner, the controlling signal for the actuator is a 4 to 20mA from a current output
controller as shown in the flow diagram in Figure 16.
controller as shown in the flow diagram in Figure 16.
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.
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.