User Manual

15
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04
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Electrical Schematics (Series 75)
(Actuator shown in counter-clockwise extreme of travel, or “open” position.)
NOTE
: DC wiring diagram shown is for size 10, 20 and 23 actuators. For 12 and 22 sizes, the red/black motor leads are reversed.
For G.P. Actuators only, terminal 6 is used for ground connection and L2 should be wired directly to N.O. Terminal of SW-2.
AC
DC
IMPORTANT
:
each actuator should be electrically powered through its own
individual switch to isolate the unused winding.
Each motor has a “thermal protector” as shown by wiring of MB 75 option in
diagram.
See table on page 5 for minimum fuse rating when overcurrent protection is used
in motor power circuit.