ZLS Series Global Limit Switches
How to read and understand the bar chart
Look at Figures A and B as examples. Actuator type
The following example relates to a unit which has a snap action
basic and which has a roller pin plunger actuator i.e. ZLCB01C.
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:
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 5.3mm 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
a) Vertical travel plunger
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. Actuator can continue to travel to
the end position (O.T. Overtravel Position) at total
travel position 17.3mm. 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.
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).
Figure A
Figure B
ZLA
ZLB
ZLC
ZLD
ZLE
ZLF
Standard
Enclosure
EN 50041
EN 50041
EN 50047
EN 50047
EN 50047
EN 50047
3-cable entry
2-cable entry
Metal
Plastic
Metal
Plastic
Metal
Plastic
Operating
Temperature
-25~ +120°C
-25~ +80°C
-25~ +80°C
-25~ +80°C
-25~ +80°C
-25~ +80°C
Humidity
<95%RH
<95%RH
<95%RH
<95%RH
<95%RH
<95%RH
Shock/Vibration
Operating Speed
10 g / 50 g
0.05mm-2m/s
10 g / 50 g
0.05mm-2m/s
10 g / 50 g
10 g / 50 g
0.05mm-2m/s
10 g / 50 g
0.05mm-2m/s
10 g / 50 g
0.05mm-2m/s
0.05mm-
2m/s
Operating
Frequency
120 ops/min
120 ops/min
120 ops/min
120 ops/min
120 ops/min
120 ops/min
Contact Resistance
Degree of Protection
Electrical Rating
<25mΩ
<25mΩ
<25mΩ
<25mΩ
<25mΩ
<25mΩ
IP67
IP65
IP67
IP65
IP67
IP65
AC15 A600
DC13 Q300
AC15 A300
DC13 Q300
AC15 A300
DC13 Q300
AC15 A300
DC13 Q300
AC15 A600
DC13 Q300
AC15 A300
DC13 Q300
Dielectric Strength
Mechanical Life
Electrical Life
2500V
107
2500V
107
2500V
107
2500V
107
2500V
107
2500V
107
5X105
5X105
5X105
5X105
5X105
5X105