NAMCO Bandai Games EA530 - Manual (Page 2)

EA530 Series Compact Snap-Lock Limit Switch
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© 2002 Namco | www.namcocontrols.com | 7/02 | EAIS02-D (IO530-10010)
Product Instructions
Actuator Consideration
Where relatively slow motions operate the limit switch, a
snap-acting or snap-lock design SHOULD BE used.
Where relatively fast motions are involved, cam
arrangement SHOULD BE such that the actuator does not
receive a severe impact.
Where relatively fast motions are involved, cams MUST BE
designed such that the limit switch will be held operated long
enough to operate relays, valves, etc.
For limit switches with pushrod actuators, the actuating
force SHOULD BE applied as nearly as possible in line
with the pushrod axis.
LIMIT SWITCH
EA
Wrong Right
Fast
Motion
Fast
Motion
LIMIT SWITCH
EA
Wrong
Right
Stop
Limit switches MUST NOT BE operated beyond the
manufacturer's recommended travel. Operating positions
and lever travel terminology are illustrated in drawing
below. For specifications of a specific switch, refer to the
switch bulletin.
NOTE: When loosening or tightening the pipe plug or set
screw used to clamp the actuating lever in the desired
position, care must be exercised to restrain the shaft/lever
assembly so as not to transmit the applied torque to the
switch itself.
Cam or dog arrangements SHOULD BE such that the
actuator is not suddenly released to snap back freely
unless specifically designed for such service.
For limit switches with lever actuators, the actuating force
SHOULD BE applied as nearly perpendicular to the lever
as practical and perpendicular to the shaft axis in which
the lever rotates.
A limit switch actuator MUST BE allowed to move far
enough for positive operation of the contacts.
Limit switches MUST BE mounted in locations which will
prevent false operation by normal movements of operator
or machine components.
Limit switches are designed for proper performance with
the actuators with which they are supplied.
Supplementary actuators SHOULD NOT BE used unless
the limit switches are specifically designed for them.
Operating mechanisms for limit switches MUST BE so
designed that, under any operating or emergency
conditions, the limit switch is not operated beyond its
overtravel limit position. A limit switch MUST NOT BE used
as a mechanical stop.
T he user should refer to NFPA 70B,
R E C O M M E N D E D P R A C T I C E F O R
ELECTRICAL MAINTENANCE, published
by the National Fire Protection
Association, for additional information.
Non-
Overriding
Cam
Non-
Overriding
Cam
LIMIT SWITCH EA LIMIT SWITCH EA
LIMIT SWITCH EA LIMIT SWITCH EA LIMIT SWITCH EA
LIMIT SWITCH EA
Wrong
Right
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