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sensing.honeywell.com
MICRO SWITCH VPX Series
ISSUE F
32312068
Figure 7. Ground Screw Locations
9. Spare terminal strip positions are available for making
junction connections for accessories such as pneumatic
solenoid valves. The terminal strip will accept 0,5 mm
2
to 4
mm
2
[20-16 AWG] wire. Insert the stripped ends of the wire
to each connection and tighten the screws to 0,4 Nm ±0,1
Nm [3.5 in-lb ±1 in-lb].
Figure 8. Spare Terminal Block Locations
Spare terminal blocks
10. For installations utilizing the UL or cUL certifications,
install conduit plugs in unused openings. For installations
utilizing the ATEX/IEC Ex certifications, install blanking
elements rated Ex db IIC Gb IP66 and Ex tb IIIC Db IP66 in
unused openings. Conduit size is marked on the inside of
the housing near the conduit openings. See Figure 6.
11. For installation utilizing the UL or cUL certifications, install
a conduit seal suitable for Class I Groups B, C and D or
Class II Groups E, F or G within 450 mm [18 inches] of
every conduit opening. For installations utilizing the ATEX/
IEC Ex certifications, if an Ex conduit sealing device is
used, it must be installed immediately at each entry. If an
Ex cable glad is used, it must be installed per the manufac-
turer’s instructions.
12. It may be desirable to adjust the cams of the product at this
point to set the switch points. See the adjustment, repair
and maintenance section for instructions on how to adjust
the cams.
13. Reassemble cover, making sure to align the arrows on the
cover and the base, per Figure 9. Fasten the (4) socket
head cap screws that fasten the cover to the base using a
6 mm hex wrench to 18 Nm ±2 Nm [13.3 ft-lb ±1.5 ft-lb].
Screw minimum yield strength: 205 MPa. Confirm with a
shim or “feeler” gauge that the gap between the cover and
the base does not exceed 0,038 mm [0.0015 in].
,
CAUTION
Cover joints must be cleaned before replacing the cover.
Use care when reassembling the cover in order to prevent
damage to the switch assembly or to the flange surface.
Figure 9. Cover to Base Alignment
Cover fits only one
orientation. Use arrows on
base and cover for alignment
14. Perform functional tests.
15. Actuate the VPX switch several times to ensure smooth
actuation.
IMPORTANT:
In units with the 90° spring return feature the
shaft only rotates ±95°. Use care to insure that total travel does
not exceed 95° in either direction in the application and during
set-up.
