6. Control Applications - Master/Slave Arrangement
82
10260S HercuLine® Actuator Installation, Operation and Maintenance Manual
Revision 5
7/07
Split Valve Configuration
A common heat or cool type process requires two valves. In this case the controller has only one output.
The two motor positioners are calibrated differently, one responds to 4 mA to 12 mA and the other
responds to 12 mA to 20 mA. At 12 mA both valves are closed, one opening below 12 mA and the other
above 12 mA. Refer to Figure 29 for an interconnection diagram for split valve operation using two
actualtors.
Hot
10260S Series Actuator #1
Neutral
Ground
120/240
VAC
250 Ohms
1 to 5 VDC
+
-
Current Output Controller
4 to 20 mA
Hot
10260S Series Actuator #2
Neutral
Ground
120/240
VAC
250 Ohms
1 to 5 VDC
Preferred
Wiring
Note: Controller must
be capable of sourcing
the impedance.
NOTE: If using HART communications, for this application HART must be configured for Multi-drop operation.
Hot
10260S Series Actuator #1
Neutral
Ground
120/240
VAC
250 Ohms
1 to 5 VDC
+
-
Current Output Controller
4 to 20 mA
Hot
10260S Series Actuator #2
Neutral
Ground
120/240
VAC
Alternate
Wiring
NOTE: If using HART communications, for this application HART must be configured for Multi-drop operation.
Figure 29 Interconnection Diagrams
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