Marwin Valve FW4700 Series Boiler Feedwater Valve User Manual
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Modutrol IV Motor Wiring for Boiler Feedwater Valve
Motor
Motor
135 OHM
Potentiometer
W
R
B
T1
T2
W
R
B
T1
T2
W
R
B
1
Transformer
White
Black
L1 [HOT]
L2
Fig. 2 Wiring for Potentiometer Control
White
Black
Transformer
1 L1 [HOT]
L2
Fig. 1 Typical On / Off Control Wiring
Blue
Yellow
Black/Yellow
Black/Blue
Red
2
2
Black/Red
Q7130A Module
Set CCW/CW
Switch to CCW
Motor with
Module
4/20 mA
Control
Signal
White
Black
Transformer
1
L1 [HOT]
L2
Fig. 3 Remote 4-20 mA Signal for Control
Fig. 4 Auxiliary Switch Schematics
T1
T2
R
comm
I+
+
+
1
2
Power supply. Provide disconnect means and overload protection as required.
Use NEC Class 1 wiring unless power supply meets Class 2 requirements. Tap unused leads.
Ensure the current draw of the external circuit is less than 7.2 amps FLA / 43.2 amps LR at 120V.