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ML6425, ML7425 SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS
5 63-2516—07
Fig. 7. ML6425 Wiring.
Fig. 8. ML7425 Wiring.
Fig. 9. ML7425 Wiring using Controller Feedback Output
and a Common Transformer.
Fig. 10. ML7425 Wiring using 2 to 10 Vdc Control Signal
and Separate Transformers.
WIRING
STRIP
T5
T1
W
B
1
L1
(HOT)
L2
T
Y
G
ML6425A,B
2
4
3
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
ALL WIRING BLOCKS HAVE THE SAME
NUMBER OF TERMINALS (8), BUT THE ONLY
TERMINALS THAT ARE ACTIVE ON THIS
BLOCK ARE T1, T5, W, AND B.
THE T-Y-G TERMINALS ARE A THREE TERMINAL
WIRING BLOCK SEPARATE FROM THE MAIN
BLOCK. THEY DO NOT APPEAR ON ALL MODELS
BECAUSE THEY ARE FOR A SINGLE FEEDBACK
POTENTIOMETER (10K OR 220 OHMS). THE
REQUIRED WIRING BLOCKS ARE PART OF
THE POTENTIOMETER ACCESSORY KITS.
MOTOR OPEN SIGNAL DRAWS VALVE STEM
UPWARDS. MOTOR CLOSE SIGNAL DRIVES
VALVE STEM DOWNWARDS.
1
2
3
4
T6984 (FLOATING CONTROLLER)
M25446
MOTOR OPEN
MOTOR CLOSE
COMMON
24 Vac
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
TS MUST BE POWERED, OR THE ACTUATOR WILL
SPRING RETURN.
ML7425A,B
WIRING
STRIP
F
+
Ð
T2
T1
O1
O2
TS
1
2
2-10 Vdc OUTPUT
T7984
(2-10 Vdc
CONTROLLER)
24 VAC
COMMON
2
1
L1
(HOT)
L2
M17394
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
F
+
0-10 Vdc OR 2-10 Vdc CONTROL SIGNAL. SEE SIGNAL
INPUT (+) SECTION.
2-10 Vdc FEEDBACK SIGNAL. SEE OUTPUT SIGNAL
FEEDBACK SECTION.
ML7425
WIRING
STRIP
F
+
–
T2
T1
O1
O2
TS
1
3
2
INPUT
(FEEDBACK)
OUTPUT
3
2
1
L1
(HOT)
L2
–
C8286B
L1
(HOT)
L2
1
1
WIRING
STRIP
F
+
–
T2
T1
O1
O2
TS
1
1
2
2
3
3
4
5
6
L1
(HOT)
L2
1
ML7425
T775
(WITH 2-10 VDC OUTPUT)
DUAL
TRANSFORMERS
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M7894
SENSOR