Page 1
Installation and Service Instructions for CX Weather-Sealed
ISSUE 4
Explosion-proof Switches
PK 88136
0518
Sensing and Control
WARNING
IF USED IN APPLICATIONS CONCERNING HUMAN
SAFETY
• Only use NC direct opening (“positive
opening”/”positive break”) contacts, identified by the
symbol .
• Do NOT use flexible/adjustable actuators. Only use
actuators designed for safety applications.
• Do NOT defeat, tamper, remove, or bypass this
switch.
• Hazardous voltage, disconnect power before
servicing.
• Strictly adhere to all installation and maintenance
instructions.
• Consult with local safety agencies and their
requirements when designing a machine-control
link, interface and all control elements that affect
safety.
Failure to comply with these instructions could
result in death or serious injury.
GENERAL INFORMATION
Sealed construction for Honeywell CX explosionproof switches provides protection from the entry of
water, dust and oil as defined in NEMA 3, 4, 4X, 6,
6P, 13, and IP66/IP67 as defined in IEC 529.
CX Series products with conduit types ¾-14NPT
also meet the North American Hazardous Locations
Designation: Class I, Group C and D; Class II,
Groups E, F and G. CX listings beginning with
numbers 14, 16, 24, 26, 36, or 84 (example: 14CX1)
also meet Class I, Group B. These explosion-proof
and weather-sealed switches are protected from
flammable hydrocarbon atmospheres, metal dust,
coal dust, and grain dust, and comply with UL
Standard: UL 894 and UL 1203, CSA Standard:
C22.2 no. 25-1966, C22.2 no. 30-M1986.
Select CX Series products also meet the European
Hazardous Locations Designation: EExd IIC T6
category II 2 GD, KEMA 01ATEX2111X and
complies with the European Directive on Equipment
and Protective Systems Intended for Use in
Potentially Explosive Atmospheres (94/9/EC)
commonly referred to as the ATEX Directive.
Compliance with the Essential Health and Safety
Requirements has been assured by compliance with
EN50014 1997, EN50018 1994 and EN50281-1-1.
The European-approved products have a
temperature range of –40 °C to 70 °C [–40 °F to
158 °F], and when used within the maximum voltage
and current specified on the product will have no
heating problems. Notice: As ambient temperature
approaches 60 °C [140 °F], the cable entry can be
70 °C [158 °F] or higher. Cable branching can be
80 °C [176 °F] or higher, making it important to select
cable that meets these requirements.
Application Note: Enclosures are based, in
general, on the broad definitions outlined in NEMA
standards. Therefore, it will be necessary for the user
to determine that a particular enclosure is adequate
when exposed to the specific conditions that might
exist in intended applications. Except as might
otherwise be noted, all references to products
relative to NEMA enclosure types are based on
MICRO SWITCH evaluation only.
IMPORTANT: Switches without shaft re-storing
force do not have overtravel stops. On switches with
potentiometers, use care to insure that overtravel
does not exceed 125° in the application and during
set-up.
LEVER POSITIONING
Loosen the screw with a 9/64 inch hexagon key
wrench, move the lever to the desired position and
securely tighten the screw until the "teller tab" can no
longer be moved by hand. Then tighten the screw
another 1/8 to 1/4 turn to assure that the lever is tight
on the shaft. Hexagon key wrenches are provided in
adjusting tool set LSZ4005 for this purpose.
CAM ADJUSTMENT
Pretravel, overtravel, and actuation sequencing
can be adjusted and/or modified in the field. No tools
are required.
To Adjust Plunger Types:
1. Lift cam follower.
Page 2
CX Series
ISSUE 4 PK 88136
2. Turn cam wheel to be adjusted to desired
position. Each notch on the wheel represents a
change in operation point of 0,116 mm (.0045
in.). Moving the cam wheel in the direction away
from the base housing advances the operate
point. Pretravel decreases and overtravel
thereby increases. When positioning cams, be
sure the cam follower is allowed to utilize the full
rise of the cam. This is required to provide
adequate overtravel and release travel of the
basic switches.
IMPORTANT: Do not use the set screw in the
cam follower to adjust travel characteristics.
3. Release cam wheel.
4. Release cam follower.
To Adjust Rotary Types:
1. Lift cam follower.
2. Move cam wheel axially to disengage teeth on
wheel from teeth on shaft disc.
3. Turn cam wheel to desired position. Turning in
direction of shaft rotation advances operate
point. Pretravel decreases and overtravel
thereby increases. Each notch on the cam
wheel represents an operating point change of
7°20'. The symbols on the cam wheel simplify
changing rotation from clockwise to
counterclockwise to center neutral, or vise versa.
If the switch operates on clockwise and
counterclockwise rotation, the pointer on the cam
follower lines up with symbol
or symbol on
the cam wheel. When symbol
lines up,
pretravel of 15° max. is obtained. When symbol
lines up, 80° max., pretravel is obtained.
Operation is in the direction of the inclined
surface of the symbol when
or lines up with
the pointer on the cam follower.
4. When cam wheel has been rotated to desired
location, release cam wheel to engage with
mating shaft disc.
5. Release cam follower
CX Wiring Methods
Honeywell recommends that conduit be installed
per NEC articles 501-4 and 501-5.
REPLACEMENT PARTS
Replacement switch assemblies consist of the
components subject to mechanical or electrical
wear. They include basic switches, cam wheels,
cam followers, and springs. The assemblies are
factory adjusted to have the same operating
characteristics as new complete switches.
How to Order
Catalog listings for complete switches can be
converted to replacement switch assembly catalog
listings as follows:
Momentary action rotary or plunger actuated
switches with shaft or plunger restoring force: To
order a replacement assembly, change the first digit
in the catalog listing for a complete switch to 9 for
rotary switches or to 10 for plunger switches.
For example, the replacement switch assembly
for a 12CX5 rotary switch = 92CX5. The
replacement switch assembly for a 36CX2 plunger
switch = 106CX2.
Maintained action rotary switches without shaft
restoring force: To order a replacement assembly,
change the first digit to a 9 and drop the first digit
following the letters CX.
Example: 12CX12=92CX2
Printed circuit board (includes potentiometer)
for 4-20 mA current output CX switches: 15PA261-
CX.
Plunger Switch
Assembly
Rotary Switch
Assembly
2 Honeywell • Sensing and Control
Page 3
CX Series
ISSUE 4 PK 88136
REPLACEMENT LEVERS
To order replacement levers, order the part
number which is metal stamped on either the lever
or the hub. Only nonsparking levers can be used
to retain the explosion-proof properties.
MOUNTING ADAPTER —15PA148-CX
Available for adapting CX to existing 2 hole
mount.
22,9
0.9
21,8
0.85
80
3.15
8,4
0.33
(2)
5/16 -18 UNC (4)
Centerline of CX
Shaft
80
3.15
12,2
0.48
104,4
4.11
ANALOG POSITION-SENSING UNITS
1. Resistive Output
Specifications:
500 ohms ±10% in center (free position)
975 ohms max. at 105° rotation clockwise (CW)
25 ohms min. at 105° rotation CCW
2 watts power at 70°C/150°F at full scale
Wiring Diagram
2. Current Output (4 to 20 mA)
The signal from the position-sensing unit is
converted to a two-wire 4 to 20 mA current
output.
Specifications:
Voltage compliance range: 12.5 to 40 VDC
Maximum load resistance:
mA 20
12.5SupplyV
maxR
L
−
=
Current signal output: 4-20mA
Span: Adjustable from 15° to 90° of angular
rotation
Null: 4 mA position may be set at any angular
position
Typical Wiring Connections:
ROTARY ACTUATIO N
Catalog Listing Prefix
(*listing indicates
replacement parts)
11CX, 21CX, 61CX,
71CX, 81CX, 281CX,
91CX*
12CX, 22CX, 62CX,
72CX, 82CX, 282CX,
92CX*
14CX, 24CX, 64CX,
74CX, 84CX, 284CX,
94CX*
16CX, 26CX, 66CX,
76CX, 86CX, 286CX,
96CX*
1172CX, 2172CX,
9172CX*
Pretravel, max. 15° 15° 30° 30° 15°
Differential Travel,
max.
5° 10° 25° 20° 5°
Overtravel, min. 90° 90° 75° 75° 90°
Circuitry Single-Pole Double-
Throw
Single-Pole DoubleThrow
Double-Pole DoubleThrow
Single-Pole DoubleThrow
(Gold Contact) SinglePole Double-Throw
Electrical Ratings
UL/CSA Rating: L96
15 A, 120, 240, or 480
Vac.
⅛ Hp, 120 Vac; ¼ Hp,
240 Vac
0.5 A, 125 Vdc, 0.25 A,
250 Vdc.
UL/CSA Rating: L23
20 A, 120, 240, or 480
Vac.
1 Hp, 120 Vac; 2 Hp, 240
Vac
0.5 A, 125 Vdc, 0.25 A,
250 Vdc.
UL/CSA Rating: L59
10 A, 120 or 240 Vac.
0.3 A, 125 Vdc, 0.15 A,
250 Vdc.
UL/CSA Rating: L22
1 A, 125 Vac.
UL/CSA Rating: L22
1 A, 125 Vac
PLUNGER ACTUATION
Catalog Listing Prefix
(*listing indicates
replacement parts)
31CX, , 41CX,
101CX*
32CX, 42CX, 102CX* 36CX, 46CX, 106CX* 3172CX
Circuitry Single-Pole Double-
Throw
Single-Pole DoubleThrow
Single-Pole Double-
Throw
(Gold Contact) SinglePole Double-Throw
Electrical Ratings
UL/CSA Rating: L96
15 A, 120, 240, or 480
Vac.
⅛ Hp, 120 Vac; ¼ Hp,
240 Vac
0.5 A, 125 Vdc, 0.25 A,
250 Vdc.
UL/CSA Rating: L23
20 A, 120, 240, or 480
Vac.
1 Hp, 120 Vac; 2 Hp, 240
Vac
0.5 A, 125 Vdc, 0.25 A,
250 Vdc.
UL/CSA Rating: L22
1 A, 125 Vac.
UL/CSA Rating: L22
1 A, 125 Vac
Pretravel, max. 2,5 mm [0.10 in]
Differential Travel,
max.
1 mm [0.04 in] 2 mm [0.08 in] 1 mm [0.04 in]
Overtravel, min. 4,75 mm [0.19 in]
Honeywell • Sensing and Control 3
Page 4
CX Series
ISSUE 4 PK 88136
SETUP INSTRUCTIONS FOR UNITS WITH 2-WIRE ANALOG (4 TO 20 mA) OUTPUT
CCW CW
Figure 1. Shaft End View
Function Switch
Right position:
Output increases
with clockwise
rotation of shaft
(viewed from front)
Left position: Output
increases with
counterclockwise
rotation of shaft
(viewed from front)
Null Trimmer
Potentiometer
Span Trimmer
Potentiometer
Output
Terminals
Figure 2. Rear View with Cover Removed
Procedure 1
1. Determine the position of the operating shaft as
it relates to the valve and actuator (where the 4
mA output is required).
2. Remove cover and set the function switch to
enable the output to be increased by
counterclockwise (CCW) or clockwise (CW)
motion of the shaft. Refer to figures 1 and 2.
Procedure 2
Reposition the shaft by using either Step 1 or 2,
below.
Use step 1 if the function switch is set in the CW
position.
1. Rotate operating shaft a quarter turn (90°) CCW
and then a quarter turn CW (back to initial
position).
Next, rotate shaft a half (180°) turn CW and then
a half turn CCW (back to initial position.)
Use Step 2 if the function switch is set in the CCW
position.
2. Rotate operating shaft a quarter turn (90°) CW
and then a quarter turn CCW (back to the initial
position).
Next, rotate shaft a half turn (180°) CCW and
then a half turn CW (back to initial position).
Procedure 3
1. Wiring (See figure 3). Connect a 12.5 to 40 VDC
(nominal) power supply to the positive (+)
terminal. Connect an ammeter to the negative (-)
terminal.
2. Set shaft to position where 4 mA output is
desired.
3. Adjust the null offset trimmer potentiometer (see
figure 2) to generate 4 mA at this position.
(Clockwise turn increases the output.)
4. Rotate shaft to position where 20 mA output is
desired.
5. Adjust the span trimmer potentiometer (see
figure 2) until output is 20 mA. (Clockwise turn
increases output.)
6. Return shaft to initial position and check for 4
mA. Adjust offset null trimmer if necessary.
7. Return shaft to final position and check for 20
mA. Adjust span trimmer if necessary.
NOTE: Honeywell recommends repeating
Procedure 3 after 50,000 operations.
4 Honeywell • Sensing and Control
Page 5
CX Series
ISSUE 4 PK 88136
ASSEMBLE COVER LOCK BRACKET FOR
EUROPEAN COMPLIANCE
1. Make sure switch cover is tightened so a lug
aligns with the external ground screw.
2. Remove bracket screws and special screwdriver
bit from bag included in the box.
3. Fit top of bracket around lug on the cover.
4. Fit external ground screw into notch in bottom of
bracket. Screw holes in the bottom of the bracket
should align with screw holes in the housing on
either side of the external ground screw.
5. Use included screwdriver bit to tighten screws
into the holes.
Cover Lugs
Cover
Lock
Bracket
External
Ground
Screw
External
Ground
Screw
Cover
Bracket
Screws
Cover
Lock
Bracket
101,6
4.00
80
3.15
18,3
.72
50,8
2.00
40
1.57
4X Ø THRU8,5
.33
Ø MAX34,1
1.34
TYP60,3
2.38
22,3
.88
9,4
.37
MAX104
4.09
MAX96
3.78
Ø98
3.86
TYP12,7
.50
20,3
.80
25,4
1.00
Ø97
3.82
20,3
.80
25,4
1.00
22,3
.88
9,4
.37
MAX145
5.71
MAX133
5.24
MAX145
5.71
MAX133
5.24
5,1
.20
19,4
.76
20,3
.80
25,4
1.00
Ø98
3.86
TYP12,7
.50
20,3
.80
25,4
1.00
MAX96
3.78
MAX104
4.09
5,1
.20
19,4
.76
TYP60,3
2.38
40
1.57
18,3
.72
80
3.15
101,6
4.00
50,8
2.00
4X F THRU8,5
.33
F MAX31,4
1.23
Ø 97
3.82
.70
.29
1 THESE HO LES NO T FURNISHED ON 80C X SERIES
MO UNTING DIM ENSIONS
( FO R REFEREN CE O N LY)
RO TA RY
SH O RT HO U SIN G
STA ND A RD HO U SIN G
PLUN GER SHO RT HOUSING
STA ND A RD HO U SIN G
2X 3/4-14 NPT
(5 FULL THREADS MIN)
8X Ø 7,3 X 17,8 DEEP HOLE FOR 5/16-18 UNC
IN TERN AL FO RM ED THREA DS
CAUTION
USE ONLY
NON-SPARKING
ACTUATORS
2X 3/4-14 NPT
(5 FULL THREADS MIN)
F7,25 STRAIG HT KNURL
.285
2X 3/4-14 NPT
( 5 FULL THREAD S MI N)
2X 3/4-14 NPT
( 5 FULL THREAD S M IN)
NON-SPARKING
ACTUATOR
CAUTION
USE ONLY
NON-SPA RKING
ACTUATO RS
.70
.29
8X Ø 7,3 X 17,8 DEEP HO LE FO R 5/ 16-18 UNC
IN TERN A L FO RMED THREA DS
1
1
Honeywell • Sensing and Control 5
Page 6
CX Series
ISSUE 4 PK 88136
CAUTION
USE ONLY
NON-SPARKING
ACTUATORS
12,1
0.48
Without
Wire Lead
2 X M25 X 1,5 (6 full threads min)
105,3
4.15
143,0
5.63
WARNING
Sensing and Control
www.honeywell.com/sensing
Honeywell
11 West Spring Street
OPENING PRODUCTS HAZARD
DO NOT OPEN these products when energized or
in a flammable gas atmosphere.
Failure to comply with these instructions could
result in death or serious injury.
WARNING
IMPROPER CONDUIT THREAD USE
DO NOT USE any other conduit thread than the
one identified on the product. Verify that the mating
threaded fitting is identical with the conduit thread
shown on the product nameplate.
Failure to comply with these instructions could
result in death or serious injury.
WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as
being free of defective materials and faulty
workmanship. Contact your local sales office for
warranty information. If warranted goods are
returned to Honeywell during the period of
coverage, Honeywell will repair or replace without
charge those items it finds defective. The
foregoing is Buyer’s sole remedy and is in lieu
of all other warranties, expressed or implied,
including those of merchantability and fitness
for a particular purpose.
Specifications may change without notice. The
information we supply is believed to be accurate
and reliable as of this printing. However, we
assume no responsibility for its use.
While we provide application assistance
personally, through our literature and the Honeywell
web site, it is up to the customer to determine the
suitability of the product in the application.
For application assistance, current specifications,
or name of the nearest Authorized Distributor,
check the Honeywell web site or call:
1-800-537-6945 USA/Canada
1-815-235-6847 International
FAX
1-815-235-6545 USA
INTERNET
www.honeywell.com/sensing
info.sc@honeywell.com
Freeport, Illinois 61032
PK 88136-4-EN IL50 GLO 404 Printed in USA
Copyright 2004 Honeywell International Inc. All Rights Reserved.
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