User Guide

F-27120-5 © Copyright 2008 TAC All Rights Reserved. 5
Close-Off Pressure and Maximum Operating Pressure Differential
For all valve assemblies, be sure to check that the anticipated maximum pressure drop
across the valve in the closed position will not exceed the close-off pressure rating and that
the pressure differential across the valve will not exceed the maximum operating pressure
differential rating. For VB-7xxx and VB-9xxx valve applications, consult the Vx-7xxx &
Vx-9xxx Selection Guide, F-27252. For VB-8xx3 valve applications, consult the Vx-8xxx
Selection Guide, F-27199.
TYPICAL TWO POSITION CONTROL (wiring diagrams)
Figure-1 illustrates typical wiring diagrams for spring return MAx1-720x Series spring return
two-position actuators. See Table-1 for model selection.
MA51-7203
MA61-7203
2
1
1 Provide overload protection and disconnect as required.
2 Actuators mounted on separate valves may be wired in
parallel. Power supply black wires are connected to the
transformer common and power supply red wires are
connected to the hot lead. Power consumption must be
observed.
24 Vac Transformer
or 22-30 Vdc
Blk
Red
Com
Hot (+DC)
Line
Volts
Grn/Yel
SPST Control Contact
1
MA51-7200
MA51-7201
MA61-7200
MA61-7201
Wire No. 1
Wire No. 2
Com
Hot
L1 N
L2 H
120 Vac or
230 Vac
Grn/Yel
120 Vac White Black
230 Vac Blue Brown
Voltage Wire 1 Wire 2
Figure-1 Typical Wiring Diagrams for Two Position Actuators.