GLZ1AB datasheet(20/20 Pages) HONEYWELL

20 / 20 page

Limit and Enclosed Switches

Honeywell Sensing and Control 1-800-537-6945 USA

1-815-235-6847 International 1-800-737-3360 Canada

A29

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 plug-

ging-in a new switch enclosure (basics are permanently staked in

the switch enclosure).

LED Wiring

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

18 → 30V DC 7mA typ. current draw

GLJ...

2 LED plug-in 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 arrange-

ments can be used where the dual LED versions of GLS are

employed.

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.

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.

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