Safety Limit Switch

Model:ED series
Feature :
• Fits on 25mm tubing, ideal for small, light weight guards
• Contacts: Slow action 1N.C. /1N.O; 2N.C.; snap action 1N.C./1N.O.
• Positive opening mechanism
• Double-insulation structure
• Eight possible actuator entry points, easy to install
• 90° and straight key
• IP65 enclosure rating
• Robust stainless steel keys
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Description

The EK series is a tongue (or key) operated safety interlock switch designed to fit at the leading edge of sliding, hinged or lift-off guards. With its dual entry slots and rotatable head, the versatile EK series can offer up to eight different actuator entry options. Operation of the switch is achieved through the insertion of a specially profiled stainless steel key that is permanently mounted to the guard door.

Available with one N.C. safety contact and one N.O. auxiliary contact or two N.C. contacts, the EK series is sealed to IP67 and has various conduit entries. A blanking plug is supplied for the unused key entry. Available accessories include a 90° actuator.
 

Specifications
Standards EN60947-5-1, UL508, EN50047, EN1088
Approvals cULus, TUV and CE marked for all applicable directives
Positive Opening Operation NC Contact
Utilization Category AC15 A600
Min Current 5V, 5mA, DC
Thermal Current (lth) 10A
Rated Insulation Voltage 600V AC
Rated Impulse withstand Volt 2500V AC
Insulation Resistance 100MW min. (DC 500V)
Contact  Resistance 25mW max. (Initial)
Max Switching Speed 250mm/s
Max Switching Frequency 6000 operation per hour
Enclosure Material UL approved glass-filled polybutylene terephthalate
Roller Material Various polymers
Enclosure Protection IP 67
Operating Temperature Min -25°C (-18°F) Max 80°C (+176°F)
Pollution Degree 3
Protection Against Electric Shock Class II (Double Insulation)
Mech. Life Expectancy 1 x 107 Cycles min
Electrically Life Expectancy 150,000 Cycle min
Vibration IEC 68-2-6, 10-55Hz±1 Hz, Excursion: 0.35mm, 1 octave/min
Conduit Entry Various (see Product Selection table)
Fixing 2 x M4


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Operating Characteristics

Item No.   |   Dimensions
 

Unit: mm
ED-20 Roller Arm Type
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-20 Slow 1NC/1NO 30° 41° 6.5 N 45° 19.0 N 80°
ED-x-2-20 Slow 2NC 30° - 6.5 N
ED-x-3-20 Snap 1NC/1NO 28° - 5.3 N
ED-x-4-20 Slow 2NC/1NO 30° 41° 6.5 N
ED-x-5-20 Slow 3NC 30° - 6.5 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-21 Adjustable Roller Arm Type (Standard arm)
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-21 Slow 1NC/1NO 30° 41° 6.5 N 45° 19.0 N 80°
ED-x-2-21 Slow 2NC 30° - 6.5 N
ED-x-3-21 Snap 1NC/1NO 28° - 5.3 N
ED-x-4-21 Slow 2NC/1NO 30° 41° 6.5 N
ED-x-5-21 Slow 3NC 30° - 6.5 N

 


Item No.   |   Dimensions

Unit: mm
ED-22 Adjustable Roller Arm Type (Long arm)
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-22 Slow 1NC/1NO 30° 41° 5.2 N 45° 19.0 N 80°
ED-x-2-22 Slow 2NC 30° - 5.2 N
ED-x-3-22 Snap 1NC/1NO 28° - 4.5 N
ED-x-4-22 Slow 2NC/1NO 30° 41° 5.2 N
ED-x-5-22 Slow 3NC 30° - 5.2 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-24 Thermoplastic End Flexible Rod
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
ED-x-2-24 Slow 2NC 12° - 6.5 N
ED-x-3-24 Snap 1NC/1NO 12° - 5.3 N
ED-x-5-24 Slow 3NC 12° - 6.5 N
 

Item No.   |   Dimensions

Unit: mm
ED-241 Cat Whisker Type
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
ED-x-2-241 Slow 2NC 12° - 6.5 N
ED-x-3-241 Snap 1NC/1NO 12° - 5.3 N
ED-x-5-241 Slow 3NC 12° - 6.5 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-242 Wobble Stick Type
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
ED-x-2-242 Slow 2NC 12° - 5.2 N
ED-x-3-242 Snap 1NC/1NO 12° - 4.5 N
ED-x-5-242 Slow 3NC 12° - 5.2 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-25 Rod Lever Type
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-25 Slow 1NC/1NO 30° 41° 1.8 N 45° 19.0 N 80°
ED-x-2-25 Slow 2NC 30° - 1.8 N
ED-x-3-25 Snap 1NC/1NO 28° - 1.9 N
ED-x-4-25 Slow 2NC/1NO 30° 41° 1.8 N
ED-x-5-25 Slow 3NC 30° - 1.8 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-27 Adjustable Roller Arm Type (Rubber roller)
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-27 Slow 1NC/1NO 30° 41° 5.2 N 45° 19.0 N 80°
ED-x-2-27 Slow 2NC 30° - 5.2 N
ED-x-3-27 Snap 1NC/1NO 28° - 4.5 N
ED-x-4-27 Slow 2NC/1NO 30° 41° 5.2 N
ED-x-5-27 Slow 3NC 30° - 5.2 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-271 Two-Way Adjustable Roller Arm Type (Rubber roller)
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-271 Slow 1NC/1NO 30° 41° 5.2 N 45° 19.0 N 80°
ED-x-2-271 Slow 2NC 30° - 5.2 N
ED-x-3-271 Snap 1NC/1NO 28° - 4.5 N
ED-x-4-271 Slow 2NC/1NO 30° 41° 5.2 N
ED-x-5-271 Slow 3NC 30° - 5.2 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-31 Push Plunger Type
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-31 Slow 1NC/1NO 2.2mm 3.0° 7.26 N 3.2mm 19.0 N 6.0mm
ED-x-2-31 Slow 2NC 2.2mm - 7.42 N
ED-x-3-31 Snap 1NC/1NO 1.9mm - 6.71 N
ED-x-4-31 Slow 2NC/1NO 2.2mm 3.0° 7.26 N
ED-x-5-31 Slow 3NC 2.2mm - 7.42 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-32 Roller Plunger Type
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-32 Slow 1NC/1NO 2.2mm 3.0° 7.26 N 3.2mm 19.0 N 6.0mm
ED-x-2-32 Slow 2NC 2.2mm - 7.42 N
ED-x-3-32 Snap 1NC/1NO 1.9mm - 6.71 N
ED-x-4-32 Slow 2NC/1NO 2.2mm 3.0° 7.26 N
ED-x-5-32 Slow 3NC 2.2mm - 7.42 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-62 Roller Lever Type
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-62 Slow 1NC/1NO 3.0mm 4.5mm 5.21 N 5.7mm 19.0 N 5.2mm
ED-x-2-62 Slow 2NC 3.0mm - 5.26 N
ED-x-3-62 Snap 1NC/1NO 2.9mm - 4.74 N
ED-x-4-62 Slow 2NC/1NO 3.0mm 4.5mm 5.21 N
ED-x-5-62 Slow 3NC 3.0mm - 5.26 N

 


Item No.   |   Dimensions
 

Unit: mm
ED-63 One-Way Roller Arm Lever Type
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
ED-x-1-63 Slow 1NC/1NO 4.0mm 6.0mm 6.37 N 4.6mm 19.0 N 9.8mm
ED-x-2-63 Slow 2NC 4.0mm - 6.98 N
ED-x-3-63 Snap 1NC/1NO 3.6mm - 5.76N
ED-x-4-63 Slow 2NC/1NO 4.0mm 6.0mm 6.37 N
ED-x-5-63 Slow 3NC 4.0mm - 6.98 N

 


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