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T6984 (FLOATING CONTROLLER)
MOTOR OPEN
MOTOR CLOSE
24 Vac
COMMON
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
2
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.
3
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.
4
MOTOR OPEN SIGNAL DRAWS VALVE STEM
UPWARDS. MOTOR CLOSE SIGNAL DRIVES
VALVE STEM DOWNWARDS.
Fig. 7. ML6425 Wiring.
T7984
(2-10 Vdc
CONTROLLER)
2-10 Vdc OUTPUT
24 VAC
COMMON
2
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
2
TS MUST BE POWERED, OR THE ACTUATOR WILL
SPRING RETURN.
Fig. 8. ML7425 Wiring.
ML6425, ML7425 SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS
ML6425A,B
WIRING
4
2
STRIP
B
W
T5
T1
T
3
Y
G
1
L1
(HOT)
L2
M25446
ML7425A,B
WIRING
STRIP
F
+
Ð
T2
T1
O1
O2
TS
1
L1
(HOT)
L2
M17394
5
ML7425
WIRING
STRIP
F
+
–
T2
T1
O1
O2
TS
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
2
2-10 Vdc FEEDBACK SIGNAL. SEE OUTPUT SIGNAL
FEEDBACK SECTION.
3
0-10 Vdc OR 2-10 Vdc CONTROL SIGNAL. SEE SIGNAL
INPUT (+) SECTION.
Fig. 9. ML7425 Wiring using Controller Feedback Output
and a Common Transformer.
ML7425
WIRING
2
1
STRIP
F
+
–
T2
3
2
T1
O1
O2
T775
(WITH 2-10 VDC OUTPUT)
TS
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
Fig. 10. ML7425 Wiring using 2 to 10 Vdc Control Signal
and Separate Transformers.
2
INPUT
F
(FEEDBACK)
+
OUTPUT
3
–
1
L1
(HOT)
L2
C8286B
SENSOR
4
6
3
5
L1
(HOT)
L2
DUAL
1
TRANSFORMERS
L1
(HOT)
1
L2
M7894
63-2516—04
1
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