Safety Limit Switch

Model:EP Series
Feature
• Conforms to EN (TUV) standards corresponding to the CE marking
• Positive opening operation of NC (Normally Closed) contacts conforming to IEC /EN 60947-5-1 Double
• Double insulation makes ground terminal unnecessary (Bears marking)
• Wide standard operating temperature range: -25°C to 80°C
• Full range of actuator heads and levers suitable for safety applications
• Sealing up to IP 67
• Wide switch variations, (Snap action and slow action basic switches)
• International conduit size
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Description

The EP series safety limit switches conform to EN 50047 and have been developed to provide a range of options including plastic cases in various sizes, a choice of snap acting, slow break/make with 2 contact configurations and a choice of actuator heads. The EP series offers the option of rotating the head in 90° increments before installation to allow ease of mounting. Highly limit switches can be used in other applications other than guard doors, for example on moving machine beds, crane arms,lifts, elevators, etc.

Operation of these limit switches is achieved by the sliding action of the guard or other moving object deflecting the plunger or lever. For safety applications it is important that upon actuation, the guard or other moving objects should not pass completely over the switch and allow the plunger or lever to return to its original position.

Specifications
Standards EN60947-5-1, UL508, EN50047, EN1088
Approvals 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 100MΩ min.(DC 500V)
Contact Resistance 25mΩ 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 4 x M5

 

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Operating Characteristics

Item No.   |   Dimensions

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

 


Item No.   |   Dimensions

Unit: mm
EP-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)
EP-x-1-21 Slow 1NC/1NO 30 41 6.5 N 45 19.0 N 80
EP-x-2-21 Slow 2NC 30 - 6.5 N
EP-x-3-21 Snap 1NC/1NO 28 - 5.3 N
EP-x-4-21 Slow 2NC/1NO 30 41 6.5 N
EP-x-5-21 Slow 3NC 30 - 6.5 N

 


Item No.   |   Dimensions

Unit: mm
EP-31 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)
EP-x-1-31 Slow 1NC/1NO 30 41 5.2 N 45 19.0 N 80
EP-x-2-31 Slow 2NC 30 - 5.2 N
EP-x-3-31 Snap 1NC/1NO 28 - 4.5 N
EP-x-4-31 Slow 2NC/1NO 30 41 5.2 N
EP-x-5-31 Slow 3NC 30 - 5.2N

 


Item No.   |   Dimensions

Unit: mm
EP-32 Roller Plunger Type
Operating Characteristics
Type Contact Block Operating
travel (PT)
PT2nd Operating
Force (OF)
Positive Opening Total
Travel
Travel
(min)
Force
(min)
EP-x-1-32 Slow 1NC/1NO 2.2mm 3.0 7.26 N 3.2mm 19.0 N 6.0mm
EP-x-2-32 Slow 2NC 2.2mm - 7.24 N
EP-x-3-32 Snap 1NC/1NO 1.9mm - 6.71 N
EP-x-4-32 Slow 2NC/1NO 2.2mm 3.0 7.26 N
EP-x-5-32 Slow 3NC 2.2mm - 7.24N

 


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