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This PDF catalog information was published in November 2000.
Sensing and Control
Honeywell Inc.
11 West Spring Street
Freeport, IL 61032
www.honeywell.com/sensing
Limit and Enclosed Switches
Global Limit Switches
GLS Series
Limit/Enclosed
GENERAL INFORMATION
The GLS series is specifically designed for
world-wide applications and is supported
by Honeywell global resources for sales and
after sales service.
Over 300 versions designed to the newest
IEC standard are available and include a
wide range of EN50041 and EN50047 type
switches. Miniature EN50047 limit switches
are available in metal and double insulated
enclosures and a metal enclosed 3-cable
entry version (EN50047 mounting compatible) is also offered. The larger EN50041
switches include metal enclosed standard
and plug-in versions.
Standard GLS switch circuit variations include 2 and 4-circuit snap action versions
with forced disconnect mechanism and two
2-circuit slow make and break versions.
Two-circuit bifurcated contact versions allow direct PLC interface. Plug-in GLS switch
types feature a 2-circuit snap action switch
with forced disconnect.
GLS includes features to make quick installation easier and safer. Screwdriver
guides, wire guides and finger guard protection are provided.
Customers will benefit from Honeywell’s
vast experience in serving world industries
over many years. To minimize plant downtime and reduced maintenance costs, the
GLS series includes plug-in and indicator
switches with single or twin LEDs.
All EN50041 products feature modular constructions. Head, body or basic switch components are available separately as replacement parts. GLS allows end user maintenance inventories and costs to be contained.
Most GLS versions are interchangeable with
almost all other makes of EN50041/47
switches.
TYPICAL APPLICATIONS
1 Machine tools: metal fabrication
equipment, presses, transfer lines and
special machinery
1 Material handling equipment:
conveyors, elevators, cranes and hoists
1 Packaging machinery and process
equipment
1 Textile machinery
1 Construction machinery and equipment,
vehicles and lift trucks
FEATURES
1 Designed to the new IEC standard for
world-wide applications
1 EN50041 metal standard and plug-in
versions
1 EN50047 metal and double insulated
versions
1 EN50047 mounting compatible, 3-cable
entry metal versions
1 UL, CSA, and CE
1 Sealing up to IP 67/NEMA 4
1 International conduit sizes
1 Snap action and slow action mechanism
with forced disconnect
1 Direct PLC interface compatible (two
circuit)
1 Galvanically isolated contacts (two
circuit)
1 Modular construction reduces
maintenance parts costs
1 Design for ease of installation
1 Five basic switch versions
1 Wide choice of actuators
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A11
Limit and Enclosed Switches
Standards/How to read and understand the bar chart information
Standards
IEC 947-1 explains the general rules relating to Low-voltage
switchgear and controlgear. The purpose of this standard is to
harmonize as much as possible the product performance and test
requirements for equipment where the rated voltage does not exceed 1,000 VAC or 1,500 VDC.
IEC 947-5-1 is part 5 of the general rules which relates to Controlcircuit devices and switching elements. Also within this part there
is a section which considers Special Requirements For Control
Switches With Positive Opening Operation. Any control switch
which has this positive opening operation and conforms to these
special requirements will be marked on the outside of the product
with this symbol:
The Contact Element Form defines the configuration of the contacts
and the number of contacts within the switch. e.g.
Form Za – both contact elements have the same polarity.
Form Zb – the two contact elements are electrically
separated.
How to read and understand the bar chart
information
The following example relates to a unit which has a snap action
basic and which has a roller pin plunger actuator i.e. GLCB01C.
When reading these bar charts follow these rules:
1. Check what type of actuator was used to test the product, this
is on the drawings which show the head style available. It will
be one of two types:
a) Vertical travel plunger
b) Linear cam travel
2. Start reading from top left of figure B, at the arrow labeled
‘‘A’’.
3. Follow the black arrows and the black strip on the chart. The
black strip indicates that there is a circuit between the terminals whose numbers are shown on the left and when white
there is no circuit.
All dimensions are in mm/(inches).
The Utilization Category defines the type of current carried (AC)
Alternating current, (DC) Direct current and the typical application in
which the switch is used e.g.
AC15 – Control of Electromagnetic Loads (less than 72VA)
DC13 – Control of electromagnets.
The contact rating Designation relates to the utilization categories
and defines the conventional thermal current lth (A), rated operational current le (A) at rated operational voltages Ue and the VA
rating e.g.
A600 – The ‘‘A’’ denotes the maximum VA rating (AC) and the
‘‘600’’ denotes the maximum rated (AC) voltage.
Q300 – The ‘‘Q’’ denotes the maximum VA rating (DC) and the
‘‘300’’ denotes the maximum rated (DC) voltage.
Figure A
These IEC standards have been adopted by CENELEC (The European Commitee for Electrotechnical Standardization) and have
been identified by replacing IEC with EN 60 e.g.
IEC 947-5-1 then becomes EN 60947-5-1.
CENELEC has defined the dimensions and characteristics of two
types of limit switch in the standards EN 50041 and EN 50047.
These standards relate to Low voltage switchgear and controlgear for industrial use and define the enclosure dimensions, the
operating point for various head actuators, the earth terminal requirement, the terminal marking and the minimum degree of IP
protection.
ELECTRICAL RATINGS
IEC947-5-1 / EN60947-5-1
Designation &
Rated operational current le (A)
Utilization Category at rated operational voltage Ue
VA
rating
120V 240V 380V 480V 500V 600V Make
AC15
A600
6
AC15
A300
AC15
B300
AC14
D300
Break
3
1.9
1.5
1.4
1.2
7200
720
6
3
—
—
—
—
7200
720
3
1.5
—
—
—
—
3600
360
0.6
0.3
—
—
—
—
432
72
125V 250V
DC13
Q300
0.55 0.27
69
69
DC13
R300
0.22
28
28
A12
0.1
Figure B
Look at Figures A and B as examples. Actuator type used for test is
the linear Cam travel type (b) shown left. The start point is at the
arrow marked ‘‘A’’ (See fig. B). This shows the free position to be 5.3
mm from the vertical center line of the unit. At this stage there is a
circuit between the terminals 21-22 but no circuit between terminals
13-14. The unit can be actuated until it reaches the operating position which is 10.5 mm from the center line – a travel distance of 10.5 –
5.3 = 5.2 mm from the free position. At this point the circuit arrangement changes – no circuit between 21-22 but making a circuit
between 13-14. If, however, the contacts of terminals 21-22 weld
together and will not separate, a mechanical safety feature will take
effect if the switch is travelled past the point from which positive
opening is assured, 13.9 mm. As the switch returns it reaches the
release position at 8.9 mm from the center line. The circuit will
change back to the original state and the difference between the
operating position and the release position gives what is known as
the differential travel i.e. 10.5 – 8.9 = 1.6 mm. The asterisk (*)
indicates the point from which the positive opening is assured.
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Degree of Protection
NEMA Classification (USA)
IP Classification
The IEC 529 standard describes a system for classifying the degree
of protection provided by the enclosures of electrical equipment.
The level of protection given by the enclosure is indicated by the IP
code.
This code system uses the letters ‘‘IP’’ (International Protection)
followed by up to four digits. Normally only the first two digits are
used.
IP
1st
Digit
2nd
Digit
3rd
Digit
4th
Digit
Note:
The IEC 529 standard does not relate to protection against rust,
corrosion, icing or corrosive solvents (e.g. cutting fluids) and that
product coded IP 67 may not necessarily meet IP 66 requirements.
First Digit
IP
0
1
2
3
4
5
6
TEST
no protection
protected against solid objects with a diameter greater
than 50 mm.
protected against solid objects with a diameter greater
than 12 mm.
protected against solid objects with a diameter greater
than 2.5 mm.
protected against solid objects with a diameter greater
than 1 mm.
protected against dust-limited ingress (no harmful
deposit)
totally protected against dust
Second Digit
IP
0
1
2
3
4
5
6
7
8
Protection against ingress of solid objects
Protection against ingress of water
Non-hazardous locations
Type 1 enclosures are intended for indoor use primarily to provide a
degree of protection against contact with the enclosed equipment.
Type 3 enclosures are intended for outdoor use primarily to provide a degree of protection against windblown dust, rain, sleet, and
external ice formation.
Type 4 enclosures are intended for indoor or outdoor use primarily
to provide a degree of protection against windblown dust and rain,
splashing water, and hose-directed water.
Type 4X enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against corrosion, windblown
dust and rain, splashing water, and hose-directed water.
Type 6 enclosures are intended for indoor or outdoor use primarily
to provide a degree of protection against the entry of water during
occasional temporary submersion at a limited depth.
Type 6P enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against the entry of water during
prolonged submersion at a limited depth.
Type 12 enclosures are intended for indoor use primarily to provide
a degree of protection against dust, falling dirt, and dripping noncorrosive liquids.
Type 13 enclosures are intended for indoor use primarily to provide
a degree of protection against dust, spraying water, oil and noncorrosive coolant.
Note: Enclosures are based, in general, on the broad definitions
outlined in NEMA Standards. Therefore, it will be necessary to
ascertain that a particular enclosure will be 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 type are based on Honeywell evaluation
and Underwriter’s Laboratory (UL) tested.
This NEMA Standards Publication does test for environmental conditions such as corrosion, rust, icing, oil, and coolants. The IEC 529
does not, and does not specify degree of protection against mechanical damage of equipment. For this reason, and because the
tests and evaluations for other characteristics are not identical, the
IEC Enclosure Classification Designations cannot be exactly equated with NEMA Enclosure Type Numbers.
TEST
no protection
protected against vertically falling drops of water.
protected against vertically falling drops of water when
the enclosure is tilted at an angle up to 15 degrees.
protected against water sprayed at an angle of 60
degrees from the vertical
protected against splashing water from all directions –
limited ingress (no harmful effects)
protected against low pressure jets of water from all
directions – limited ingress permitted
protected against powerful jets of water from all
directions – limited ingress permitted
protected against the effects of temporary immersion in
water
protected against the effects of continuous immersion in
water
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A13
Limit/Enclosed
The first digit is numerical and indicates the level of protection within
the enclosure against the ingress of solid foreign objects and access to hazardous parts by persons.
The second digit is also numerical and indicates the level of protection against the ingress of WATER into the enclosure.
The third digit is a letter and indicates a higher level of protection for
persons against access to hazardous parts.
The fourth digit is also a letter and is used in exceptional cases for
supplementary information.
If the first or second digit is not required to be specified, then it is
replaced by the letter ‘‘X’’ (‘‘XX’’ if both digits are not required).
While the tables below serve as a guide to the level of protection,
Honeywell recommends that customers refer to the full official IEC
specification for the exact definitions. If in doubt about the degree of
protection required for a particular application, please consult your
local Honeywell office.
NEMA (National Electrical Manufacturer’s Association) prepares standards which define a product, process or procedure with
reference to one or more of the following: nomenclature, composition, construction, dimensions, tolerances, safety, operating characteristics, performance, quality, electrical rating, testing and the
service for which designed.
This standard provides degrees of protection for Enclosures for
Electrical Equipement (1000 Volts Maximum) similar to that of the
IEC 529 standard. The reference standard herein reflects the latest
data in the NEMA Standards Publication when this information went
to print.
Limit and Enclosed Switches
GLA – Metal Standard
GLF – (w/1 LED)
Snap-Action Contacts
12...250Vac/dc
GLH – (w/2 LED)
18...30Vdc
Circuit closed
EN 50041
* Positive opening to IEC 947-5-1-3
Slow-Action Contacts
BREAK BEFORE MAKE
Technical Data
Mechanical life
(F.P.) 0°
(O.P.) 26°
(R.P.) 14°
(D.T.) 12°
(*) 55°
(O.T.) 71° to
85°
up to 15 million
operations
Degree of protection IP 67
NEMA/UL
type 1, 4, 12, 13
Temperature range Operating:
–25°C to +85°C
–13°F to +185°F
Storage:
–40°C to +85°C
–40°F to +185°F
Approvals
IEC 947-5-1
EN60947-5-1
AC15 A300/A600
DC13 Q300
UL & CSA
Vibration (Actuator
not fitted)
10 g conforming to
IEC 68-2-6
Shock (Actuator
not fitted)
50 g conforming to
IEC 68-2-27
Terminal marking to
EN 50013
(F.P.) 0°
(O.P.) 26°
(R.P.)
(D.T.)
(O.P.2) 38°
(O.T.) 71° to
85°
Conduit
Thread
Std =
A
A
= 1/2N NPT
(w/1LED) =
F
B
= PG 13,5
(w/2LED) =
H
C
= 20 mm
D
= PF 1/2
* Point from which the positive opening is assured.
Ordering:
GL
X
X
X
X
01
07
03
(Gold contact version)
X
XX
Example: GLA B 01 B — GLF B 01 B — GLH B 01 B
A14
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Slow-Action Contacts
MAKE BEFORE BREAK
Snap-Action Contacts
DOUBLE POLE
(F.P.) 0°
(O.P.) 26°
(R.P.) 14°
(D.T.) 12°
(*) 55°
(O.T.) 71° to
85°
A1B
Additional
levers available
(see page A24)
B
C
D
E7B
(GLA)
04
20
(GLF, GLH)
or
24
X
XXX
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A15
Limit/Enclosed
(F.P.) 0°
(O.P.) 26°
(R.P.)
(D.T.)
(O.P.2) 38°
(O.T.) 71° to
85°
Actuator Types
Limit and Enclosed Switches
GLB – Metal Plug-in
GLG – (w/1LED) 12...250Vac/dc
GLJ – (w/2LED) 18...30Vdc
EN 50041
Snap-Action Contacts
Circuit closed
* Positive opening to IEC 947-5-1-3
Technical Data
Mechanical life
up to 15 million operations
Degree of protection
IP 67
NEMA/UL type 1, 4, 12, 13
Temperature range
Operating:
–25°C to +85°C
–13°F to +185°F
Storage:
–40°C to +85°C
–40°F to +185°F
Approvals
IEC 947-5-1
EN60947-5-1
AC15 A300/A600
DC13 Q300
UL & CSA
Vibration (Actuator not fitted)
10 g conforming to IEC 68-2-6
Shock (Actuator not fitted)
50 g conforming to IEC 68-2-27
Terminal marking to EN 50013
(F.P.) 0°
(O.P.) 26°
(R.P.) 14°
(D.T.) 12°
(*) 55°
(O.T.) 71° to
85°
Conduit
Thread
Plug-in =
B
A
= 1/2N NPT
(w/1LED) =
G
B
= PG 13,5
(w/2LED) =
J
C
= 20 mm
* Point from which the positive opening is assured.
(GLB only)
D
Ordering:
GL
X
X
X
X
= PF 1/2
02
Example: GLB B 02 B — GLG B 12 B — GLJ B 13 B
A16
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Snap-Action Contacts
Snap-Action Contacts
(F.P.) 0°
(O.P.) 26°
(R.P.) 14°
(D.T.) 12°
(*) 55°
(O.T.) 71° to
85°
A1B
Additional
levers available
(see page A24)
B
C
D
E7B
(GLG only)
(GLJ only)
12
13
X
X
XX
XXX
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A17
Limit/Enclosed
(F.P.) 0°
(O.P.) 26°
(R.P.) 14°
(D.T.) 12°
(*) 55°
(O.T.) 71° to
85°
Actuator Types
Limit and Enclosed Switches
GLC
EN 50047
Metal standard
Snap-Action Contacts
Technical Data
Mechanical life
up to 15 million operations
Degree of protection
IP 66
NEMA/UL type 1, 4, 12, 13
Temperature range
Operating:
–25°C to +85°C
–13°F to +185°F
Storage:
–40°C to +85°C
–40°F to +185°F
Approvals
IEC 947-5-1
EN60947-5-1
AC15 A300
DC13 Q300
UL & CSA
Vibration (Actuator not fitted)
10 g conforming to IEC 68-2-6
Shock (Actuator not fitted)
50 g conforming to IEC 68-2-27
Terminal marking to EN 50013
Circuit closed
* Positive opening to IEC 947-5-1-3
(F.P.) 0°
(O.P.) 26°
(R.P.) 14°
(D.T.) 12°
(*) 55°
(O.T.) 61° to 75°
Conduit Thread
A
= 1/2N NPT adapter
B
= PG 13,5
C
= 20 mm
D
= PF 1/2
Ordering:
X
GLC
X
* Point from which the positive opening is assured.
01
Example: GLC B 01 B
A18
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Slow-Action Contacts
BREAK BEFORE MAKE
Slow-Action Contacts
MAKE BEFORE BREAK
(F.P.) 0°
(O.P.) 26°
(R.P.)
(D.T.)
(O.P.2) 39°
(O.T.) 61° to
75°
A1B
Additional
levers available
(see page A24)
B
C
D
E7B
03
04
X
X
XX
XXX
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A19
Limit/Enclosed
(F.P.) 0°
(O.P.) 26°
(R.P.)
(D.T.)
(O.P.2) 39°
(O.T.) 61° to
75°
Actuator Types
Limit and Enclosed Switches
GLD
EN 50047
Double insulated standard
Snap-Action Contacts
Technical Data
Mechanical life
up to 15 million operations
Degree of protection
IP 66
NEMA/UL type 1, 12, 13
Temperature range
Operating:
–25°C to +85°C
–13°F to +185°F
Storage:
–40°C to +85°C
–40°F to +185°F
Approvals
IEC 947-5-1
EN60947-5-1
AC15 A600
DC13 Q300
UL & CSA
Vibration (Actuator not fitted)
10 g conforming to IEC 68-2-6
Shock (Actuator not fitted)
50 g conforming to IEC 68-2-27
Terminal marking to EN 50013
Circuit closed
* Positive opening to IEC 947-5-1-3
(F.P.) 0°
(O.P.) 26°
(R.P.) 14,5°
(D.T.) 11,5°
(*) 54°
(O.T.) 61° to
75°
Conduit Thread
A
= 1/2N NPT adapter
B
= PG 13,5
C
= 20 mm adapter
* Point from which the positive opening is assured.
D
Ordering:
X
GLD
X
= PF 1/2 adapter
01
Example: GLD B 01 B
A20
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Slow-Action Contacts
BREAK BEFORE MAKE
Slow-Action Contacts
MAKE BEFORE BREAK
(F.P.) 0°
(O.P.) 26°
(R.P.)
(D.T.)
(O.P.2) 39°
(O.T.) 61° to
75°
A1B
Additional
levers available
(see page A24)
B
C
D
E7B
03
04
X
X
XX
XXX
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A21
Limit/Enclosed
(F.P.) 0°
(O.P.) 26°
(R.P.)
(D.T.)
(O.P.2) 39°
(O.T.) 61° to
75°
Actuator Types
Limit and Enclosed Switches
GLE
EN 50047 Compatible
Snap-Action Contacts
3 Conduit Metal
standard
Slow-Action Contacts
BREAK BEFORE MAKE
Technical Data
Mechanical life
up to 15 million
operations
Circuit closed
* Positive opening to IEC 947-5-1-3
Degree of protection IP 66
NEMA/UL
type 1, 4, 12, 13
(F.P.) 0°
(O.P.) 26°
(R.P.) 14,5°
(D.T.) 11,5°
(*) 54°
(O.T.) 61° to
75°
Temperature range Operating:
–25°C to +85°C
–13°F to +185°F
Storage:
–40°C to +85°C
–40°F to +185°F
Approvals
IEC 947-5-1
EN60947-5-1
AC15 A300
DC13 Q300
UL & CSA
Vibration (Actuator
not fitted)
10 g conforming to
IEC 68-2-6
Shock (Actuator
not fitted)
50 g conforming to
IEC 68-2-27
Terminal marking to
EN 50013
(F.P.) 0°
(O.P.) 26°
(R.P.)
(D.T.)
(O.P.2) 39°
(O.T.) 61° to
75°
Conduit Thread
Ordering:
GLE
A
= 1/2N NPT adapter
B
= PG 13,5
C
= 20 mm
D
= PF 1/2
* Point from which the positive opening is assured.
X
X
01
03
X
XX
Example: GLE B 01 B
A22
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Slow-Action Contacts
MAKE BEFORE BREAK
Snap-Action Contacts
DOUBLE POLE
(F.P.) 0°
(O.P.) 26°
(R.P.) 18°
(D.T.) 8°
(*) 54°
(O.T.) 61° to
75°
A1B
Additional
levers available
(see page A24)
B
C
D
E7B
04
24
X
XXX
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A23
Limit/Enclosed
(F.P.) 0°
(O.P.) 26°
(R.P.)
(D.T.)
(O.P.2) 39°
(O.T.) 61° to
75°
Actuator Types
Limit and Enclosed Switches
Additional Lever Types
For use with all Side Rotary Head Style.
Figure 1 illustrates Miniature Din lever types conforming to EN 50047 while Figure 2
illustrates Standard Din lever types which conform to EN 50041.
All dimensions are in mm/(inches).
GLC, GLD, GLE (EN 50047)
Side Rotary Roller Lever
A1A Plastic Roller
A1B Metal Roller
Side Rotary Adjustable Lever
A2A Plastic Roller
A2B Metal Roller
Offset Side Rotary Roller Lever
A5A Plastic Roller
A5B Metal Roller Head
Side Rotary Adjustable Rod
A4J Metal Rod Head
Side Rotary Conveyor Lever
A9A Ceramic Roller
Figure 1
GLA, GLB, GLF, GLH, GLG, GLJ (EN 50041)
Side Rotary Roller Lever
A1A Plastic Roller
A1B Metal Roller
Offset Side Rotary Roller Lever
A5A – Plastic Roller
A5B – Metal Roller
Side Rotary Adjustable Lever
A2A Plastic Roller
A2B Metal Roller
Side Rotary Adjustable Rod
A4J Metal Rod Head
A24
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Figure 2
Limit and Enclosed Switches
Spare Parts for the GLS Series
To order spare parts for your particular GLS simply use the GLS number on the front of the switch to identify the construction used and
therefore the spare part you need.
For Example: The part No: GLDC04A1B
GLD
C
04
A1B
For Example: The part No: GLAB01E7B
GLA
B
01
E7B
Wobble Head
01 Basic Snap Action
B Thread PG13.5
EN 50041 Body
Fixed Side Rotary Steel Roller
04 Make Before Break Slow Action
C Thread 20 mm
EN 50047 Body
From the tables below it is possible to obtain replacement Basic Switches, Heads, Actuators, Levers and LED Assemblies.
Basic Switches
Body
Type
01
Basic
02
GLA
GLZ301
GLB
GLC
Switch
03
04
GLZ303
GLZ304
GLZ303
GLZ304
13
20
24
GLZ320
GLZ3021
GLZ301
GLD
GLZ301
GLZ303
GLZ304
GLE
GLZ301
GLZ303
GLZ304
GLF
GLZ301
GLZ303
GLZ304
GLG
GLH
12
GLZ324
GLZ3121
GLZ301
GLZ303
GLZ304
GLJ
GLZ3131
Note 1: For these spares you will receive the front of the body with no head. To replace the faulty switch/LED assembly remove the old body and old head. Retrofit the head
onto the replacement and plug in the spare switch/LED assembly into the old base.
Heads
Body
Type
A
Head
B
Types
C
D
GLA
GLZ1AA
GLZ1AB
GLZ1AC
GLZ1AD
GLZ1AE7A GLZ1AE7B GLZ1AE7D GLZ1AK8A GLZ1AK8B GLZ1AK8C
GLB
GLZ1AA
GLZ1AB
GLZ1AC
GLZ1AD
GLZ1AE7A GLZ1AE7B GLZ1AE7D GLZ1AK8A GLZ1AK8B GLZ1AK8C
GLC
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
GLD
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
GLE
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
E7A
E7B
E7D
K8A
K8B
K8C
N/A
GLF
GLZ1AA
GLZ1AB
GLZ1AC
GLZ1AD
GLZ1AE7A GLZ1AE7B GLZ1AE7D GLZ1AK8A GLZ1AK8B GLZ1AK8C
GLG
GLZ1AA
GLZ1AB
GLZ1AC
GLZ1AD
GLZ1AE7A GLZ1AE7B GLZ1AE7D GLZ1AK8A GLZ1AK8B GLZ1AK8C
GLH
GLZ1AA
GLZ1AB
GLZ1AC
GLZ1AD
GLZ1AE7A GLZ1AE7B GLZ1AE7D GLZ1AK8A GLZ1AK8B GLZ1AK8C
GLJ
GLZ1AA
GLZ1AB
GLZ1AC
GLZ1AD
GLZ1AE7A GLZ1AE7B GLZ1AE7D GLZ1AK8A GLZ1AK8B GLZ1AK8C
Levers / Actuators (For GLZ1AA Head Type Only (side rotary))
Body
Type
1A
Lever
1B
Actuator
2A
Type
2B
4J
5B
GLA
GLZ51A
GLZ51B
GLZ52A
GLZ52B
GLZ54J
GLZ55B
GLB
GLZ51A
GLZ51B
GLZ52A
GLZ52B
GLZ54J
GLZ55B
GLC
N/A
N/A
N/A
N/A
N/A
N/A
GLD
N/A
N/A
N/A
N/A
N/A
N/A
GLE
N/A
N/A
N/A
N/A
N/A
N/A
GLF
GLZ51A
GLZ51B
GLZ52A
GLZ52B
GLZ54J
GLZ55B
GLG
GLZ51A
GLZ51B
GLZ52A
GLZ52B
GLZ54J
GLZ55B
GLH
GLZ51A
GLZ51B
GLZ52A
GLZ52B
GLZ54J
GLZ55B
GLJ
GLZ51A
GLZ51B
GLZ52A
GLZ52B
GLZ54J
GLZ55B
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A25
Limit/Enclosed
Note: Spare parts should only be used to replace parts on existing listings. Honeywell accepts no liability for parts used in combinations not
recognized by Honeywell as valid listings.
Limit and Enclosed Switches
LED Assemblies
Body
Type
LED-Assembly
1-LED
TYPE
2-LED
GLA
GLB
GLC
GLD
GLE
GLF
GLZ6F
GLG
GLH
GLZ6H
GLJ
Parts Description
Heads
GLZ1AA
GLZ1AB
GLZ1AC
GLZ1AD
GLZ1AE7A
GLZ1AE7B
GLZ1AE7D
GLZ1AK8A
GLZ1AK8B
GLZ1AK8C
Side Rotary Head
Top Pin Plunger Head
Top Roller Plunger Head
Roller Arm Head
Plastic Wobble Stick Head Assembly
Coil Wobble Stick Head Assembly
Coil Whisker Head Assembly
140mm Cat’s Whisker Head Assembly
190mm Cat’s Whisker Head Assembly
Cat’s Whisker Head Assembly
GLZ301
GLZ302
GLZ303
GLZ304
GLZ312
GLZ313
GLZ320
GLZ324
Snap Action SPDT (01)
Snap Action SPDT Plug-In (02) see Note 1 on page A25
SPDT Break Before Make (03)
SPDT Make Before Break (04)
Snap Action SPDT 1 LED Plug-In (12) see Note 1 on page A25
Snap Action SPDT 2 LED Plug-In (13) see Note 1 on page A25
Snap Action DPDT (20)
Snap Action DPDT for 3 Conduit (24)
GLZ51A
GLZ51B
GLZ52A
GLZ52B
GLZ54J
GLZ55B
Side Rotary Fixed Lever Nylon Roller Actuator
Side Rotary Fixed Lever Steel Roller Actuator
Side Rotary Adjustable Lever Nylon Roller Actuator
Side Rotary Adjustable Lever Steel Roller Actuator
Side Rotary Adjustable Rod Actuator
Side Rotary Fixed Offset Lever Steel Roller
GLZ6F
GLZ6H
Spare 1 LED Assembly for GLF...
Spare 2 LED Assembly for GLH...
Basics
Actuators
LED Assemblies
A26
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Proper Application of Limit Switches
The following are guidelines for the correct application of Limit
Switches.
Never use the Limit Switch as a physical end stop. Mechanical
damage or incorrect operation may occur if this is done. Always
ensure that the mechanical actuator is protected from excessive
mechanical shock. Never release the actuator suddenly – gradual
actuation and release will ensure that stress on the mechanics of the
switch is kept to a minimum. This has the added benefit that the
switch life will be improved.
The following diagrams illustrate how to actuate your limit switch for
optimum performance.
Cam or dog arrangements should be such that the actuator is not suddenly
released to snap back freely.
Mounting Instructions
Mounting, Installation and Wiring of the Limit Switch plays a critical
role in the performance of the switch in service. Care should be
taken in the position and orientation of the switch for optimum
performance. All of the guidelines given below apply equally when
replacing parts on the switch.
Wiring
The GLS series has been designed to accept 14AWG wire maximum. Care should be taken to ensure that the wires are carefully
arranged in the switch so that they do not overlap or otherwise
interfere with the operation of the switch when the switch cover is
replaced. If the wires are trapped between the basic and the cover
then the switch may fail to operate correctly – ensure that an
adequate gap exists between the fitted wires and the cover when
fitted. It is not good practice to have very different diameter wires
share the same terminal in the switch – uneven pressure on the wires
will result.
Mounting
The GLS series has been designed to be extremely flexible in
mounting. Elongated mounting holes mean that the switch can be
adjusted substantially prior to fixing in position. We recommend M4
maximum screws be used for mounting the switch in its application.
Fix and test the switch for intended switch point in the application.
When mounting the switch ensure that it is positioned to allow
natural drainage of any moisture which may enter the enclosure
during service. Natural drainage can be achieved by mounting the
switch upright with the conduit entry at the bottom of the switch.
Mounting the switch in the upright position will enable maintenance
and replacement procedures to be carried out easily.
Adjustment and Set-up
In general no adjustment of the GLS should be necessary beyond
correct mounting of the switch body as required. It is possible to
change the switch actuator orientation. The example below shows a
top roller plunger head rotated through 90°. The other head styles
can also be rotated.
Operating mechanisms for limit switches should be so designed that, under any
operating or emergency conditions, the limit switch is not operated beyond its
overtravel limit position. A limit switch should not be used as a mechanical stop.
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
about which the lever rotates.
The head can be rotated by carefully removing the four combination
head screws holding the head in position. Carefully remove the
head assembly and rotate to the desired position. Replace the head
assembly and tighten the mounting screws. Ensure that the head is
properly located. Hand test the actuator to ensure that the switch
functions and the actuator moves freely (sticking can occur if material has been deposited inside the drive train whilst the head assembly was removed).
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A27
Limit/Enclosed
For limit switches with pushrod actuators, the actuating force should be applied as
nearly as possible in line with the pushrod axis.
Tools
The following tools will be needed – depending on the task.
Posidrive screwdriver n° 1 & n° 2
Allen key 3 mm
When tightening a screw down the maximum force which should be
applied should not exceed 80N.cm (7in.LB) on any screw on the
complete assembly or basic switch terminal.
Limit and Enclosed Switches
Side Rotaries
The side rotary assemblies incorporate a feature for adjusting the
free position of the side rotary lever. The EN 50041 body style allows
infinite adjustment and reclamp. The EN 50047 style allows clamping in 10° increments. See the following diagrams for details of the
mechanism in each case.
Standard EN 50041 body style
There are two lever mounting options: (1) By fully seating the lever in
one of the four 90° detent positions on the shaft hub which provides
positive lever retention; (2) By mounting the lever on the serrated
portion of the shaft (which enables the lever to be mounted in any
position).
To change the rotary lever’s free position: (1) Use a 3 mm hex Allen
wrench to loosen the Allen screw, as shown in the drawing above;
(2) Back off the lever 2 mm and move it to the desired free position;
(3) retighten the Allen screw; (4) Check to see if the free position is
satisfactory for the application; (5) Repeat the adjustment procedure if necessary.
A teller tab located at the bottom of the lever (see diagram below)
helps prevent lever slippage. It enables the installer to detect the
correct tightening torque. When this tab cannot be moved, the Allen
screw has been tightened properly.
Miniature EN 50047 body style
A serrated coupling is used to set the lever free position in 10°
increments. This adjustment is achieved by: (1) Unscrewing the
combination head screw which holds the lever in place, taking care
not to lose any parts; (2) Readjust the assembly and rotate to the
desired free position; (3) Re-assemble and tighten the combination
screw. (4) Check that the free position is correct for the application
and repeat the adjustment procedure if necessary.
NOTE: The lever can be set in 90° increments by removing the lever
and rotating it to the desired 90° position.
A28
EN 50041 Side Rotary Actuator Direction Adjustment
As furnished, GLS rotary switches will operate when the lever is
rotated from either the left or right. They can be field modified to
operate in one direction only (Clockwise CW; Counter clockwise
CCW) by following these steps: (1) Carefully remove the complete
head assembly; (2) Turn the head assembly upside down as shown
in the drawing below.
(3) Pull the plunger mechanism out and rotate it through 90° degree
increments until the alignment tab points to the desired function
(CW, CCW, or CW and CCW). (4) Push plunger mechanism in. (5)
Reassemble the head assembly and re-test the switch in your
application.
Replacement Instructions
All levers for side rotaries are available as replacment parts. All
basics, except the plug-in, can be replaced. All EN 50041 heads can
be replaced. The replacement procedures for these components
are straightforward in nature.
Side Rotary Levers
Remove the old lever from the product being replaced. On EN 50041
product this is achieved by loosening the Allen screw holding the
lever on the shaft. On EN 50047 product this is achieved by unscrewing the combination screw holding the lever on the shaft.
Replace the lever and tighten the Allen screw or combination screw.
Retest the switch in its application.
Heads
All EN 50041 style switch heads can be removed and replaced.
Remove the old head by unscrewing the four retaining screws on
the head assembly.
Ensure replacement part is identical to one being removed.
Re-test the assembly and ensure correct operation.
Basics
Non plug-in EN 50041 and three conduit EN 50047 body styles.
Basic switches can be removed and replaced by following this
procedure: (1) Remove the cover from the body; (2) Before disconnecting the switch wiring, carefully note the wiring arrangement
for your application, particularly the safety ground connection; (3)
Remove the basic switch retaining screw; (4) Remove the old basic
and replace it with the same thing; (5) Use the retaining screw to
install the new basic – ensure that it is correctly seated in the switch
body; (6) Wire the switch terminals as before; (7) Before replacing
the cover – ensure that the switch wires are not twisted or otherwise
lifted from the basic (to prevent them from becoming trapped when
the cover is replaced); then (8) Test the switch in the application.
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Miniature EN 50047 body style
Use same replacement procedure as above except that no retaining
screw is involved. The basic switch is secured in the miniature
housings by a press fit. To remove an inoperative switch, merely
grasp the basic firmly and pull it out of the housing. Insert the new
switch in its place. Then wire the new basic as before and test it in the
application.
Plug-in EN 50041 body style
The switch enclosure portion of this two-piece body style plugs into
a pre-wired terminal block mounted in the application. Replacement
is accomplished by unplugging the old switch enclosure and plugging-in a new switch enclosure (basics are permanently staked in
the switch enclosure).
The GLF, GLG, GLH and GLJ versions of GLS (EN 50041) come
complete with LED indicators. These indicators can be wired in a
variety of ways. The standard adopted in the GLG (1 LED Plug-in
body) and in the GLJ (2 LED Plug-in body) versions is to use green to
indicate power available and yellow to indicate operation. Operation
can indicate actuator free or actuator operated depending on the
wireing arrangement employed.
The table below indicates the body styles and indicators offered.
Body
Function
Spec.
GLF...
1 LED
12 → 250V AC and DC Less than
1,5mA draw
GLG...
1 LED plug-in 12 → 250V AC and DC Less than
1,5mA draw
GLH...
2 LED
GLJ...
2 LED plug-in 18 → 30V DC 7mA typ. current draw
18 → 30V DC 7mA typ. current draw
The following wiring arrangements show possible configurations
that can be used for the LED’s. Combinations of these arrangements can be used where the dual LED versions of GLS are
employed.
In ‘‘Wiring Arrangement 3’’ you can see that regardless of the
position of the main switch the current for the LED can flow through
the LED and the LED will illuminate indicating power available.
In ‘‘Wiring Arrangement 4’’ you can see that when the load is
energised the LED will illuminate.
The above circuit ideas give a flavour for what is possible with these
versions of GLS. The LED’s should be treated as ’’for indication
only’’ devices.
Note:
While every effort is made to ensure that the above guidelines are
accurate, no responsibility can be accepted for failure to apply good
engineering practice to machinery design and use of Honeywell
products. Never apply any of the procedures outlined above on live
circuits. Ensure that testing of changes is carried out with no risk of
injury during tests. These guidelines are produced to help our
customers make the right choices in applying our Limit Switches to
general applications. Contact your local Honeywell representative if
you have any difficulties.
In ‘‘Wiring Arrangement 1’’ you can see that while the main basic is
open the current for the LED can flow through the LED (via the load)
and the LED illuminates.
In ‘‘Wiring Arrangement 2’’ you can see that while the main switch is
closed the current for the LED cannot flow through the LED and the
LED will not illuminate.
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A29
Limit/Enclosed
LED Wiring
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