MICRO SWITCH GSX Series
sealing requirements are needed. To comply with explosion
proof requirements the GSX has flame paths within the
housing, which cool exploding gases below the ignition
temperature before they reach explosive gases surrounding the
housing. Flame paths on the GSX are (1) an extended plunger
between the switch cavity and head and (2) the cover-housing
threads on the front of the switch.
All the basic switches used in the GSX Series incorporate a
positive break mechanism to force the NC (normally closed)
contacts open. This product complies with Machinery Directive
(2006/42/EC)) and complies with IEC/EN 60947-5-1.
MATERIALS OF CONSTRUCTION
The following materials are used in the GSX limit switch:
aluminum housing; buna-N seals; rubber, copper alloy, or
plastic rollers/plungers; zinc operating heads and actuator
arms. The suitability of these materials for the application
environment is solely up to the customer.
ADJUSTMENT, REPAIR, AND MAINTENANCE
The limit switch should be checked periodically by suitably
trained personnel for proper operation. Installation, inspection,
repair, and maintenance shall be carried out by suitably trained
personnel in accordance with the applicable code of practice,
e.g., EN/IEC 60079-14, EN/IEC 60079-19, or EN/IEC 61241-
14. The operating head may be rotated in 90° increments.
Replacement operating heads or switching elements may be
ordered and installed. Repair beyond the replacement of these
components is not recommended.
REPLACING THE SWITCHING ELEMENT
Follow steps 2-13 in the installation instructions. The single
screw holding the switching element should be torqued to 0,56
Nm to 0,90 Nm [5 in-lb to 8 in-lb].
ROTATING OR REPLACING THE OPERATING
HEAD (See Figure 1)
Using the TORX® tamper-resistant bit (included), loosen
tamper-proof screws and remove head.
Install the head in the desired position (90° increments),
insuring seal remains in correct position while assembling
Torque tamper-proof screws 1,4 Nm to 1,8 Nm [12 in-lb to
Figure 1. Rotating the GSX head
REVERSING THE ROLLER LEVER
Except for the offset roller levers, the roller arm may be reversed
to face the roller to the inside or outside of the arm.
POSITIONING LEVER (See Figure 2)
The lever on rotary-actuated units is adjustable to any position
through 360° around the shaft.
Loosen the cap screw with 9/64-inch hexagon key wrench.
Move lever to desired position
Securely tighten screw until teller tab can no longer be
moved by hand.
Tighten screw another 1/8 to 1/4 turn to assure lever is
tight on the shaft.
Figure 2. Positioning the GSX lever
CHANGING DIRECTION OF ACTUATION OF SIDE
ROTARY HEAD (See Figure 3)
The side rotary head can be adjusted to only rotate clockwise,
counterclockwise, or both.
Loosen the four captive head screws to remove the head.
Lift the plastic plunger and rotate it so the key lines up with
the desired direction of rotation.
Replace the head and securely tighten the four screws to
1,4 Nm to 1,8 Nm [12 in-lb to 16 in-lb].
Figure 3. Changing actuation of the GSX side rotary head
Mount switch using M5 or #10 screws. Torque screws to
4,9 Nm to 5,9 Nm [43 in-lb to 52 in-lb].
Refer to circuit diagram on switch housing. Diagram
depicts safety switch with actuator at free position.
Unscrew cover to expose the switching element for wiring
or replacement. To aid in cover removal, a screwdriver or
bar may be used on the wrenching lugs.
Connect stranded wire (0,75 mm
AWG) or solid wire (0,75 mm
to connector terminals. Stripped wire ends or any spade
and ring connector that will fit the terminals may be used.
Spades may be up to 7,9 mm [0.312 in] wide, rings up
to 7,9 mm [0.312 in] diameter. With spade or ring type
connections, pre-insulated connectors or heat-shrinkable
to 2,5 mm
to 1,5 mm
, 18-16 AWG)