Products

Emergency Stop Switches
Position Switches
Speed Monitoring
ATEX Switches
ATEX Emergency Stop Switches

HEN EX

Article Number: 2D: 91.096 190.xxx; 3D: 91.096.300.xxx

  • Alu housing
  • Installation for 2 x 50 m
  • Reset lever

Features

Kiepe pull-rope emergency stop switches type HEN EX are used in accordance with the requirements of EN 620 as well as BGI 710 and in conformity with DIN EN ISO 13850 as emergency stop devices as supplementary safety measures on conveyor belt systems. The pull rope is symmetrically tensioned on both sides of the red release lever. The devices are suitable for outdoor use and applications where the ambient temperature varies considerably. With the pull-rope system functionally aligned, the emergency stop signal can be triggered over a distance of up to 2 x 125 m for each switch. Depending on the switch type, they are suitable for use in potentially explosive atmospheres with conductive dust, equip ment group II, categories 2 and 3, in zones 21 and 22 (type HEN EX 2D) or category 3, only in zone 22 (type HEN EX 3D). Kiepe emergency pull-rope switches type HEN EX are compliant with the ATEX Directive 2014/34/EU and Machinery Directive 2006/42/EC. They must only be used in control electrical circuits. The HEN EX aluminium housing offers space for up to 3 simulta neously switching NO and NC contacts. Taking into considera tion the safety data and maintenance recommendations, the pull-rope emergency stop switch type HEN EX can be used in safety circuits in accordance with DIN EN ISO 13849 up to Performance Level d (PLd). 

 Note:                                                                                                                                                                                                                 These pull-rope emergency stop switches may only be used in accordance with their labelling

Corrosive

Powder
Gravel
Rubble

Non-Corrosive

Powder
Gravel
Rubble

The pull-rope emergency stop switch is actuated by a pull rope 1 connected on both sides of the red release lever. The contacts are actuated by a spring supported cam disc (snap action function). At the same time, up to three NC and NO contacts are actuated simultaneously and a cross comparison of the contacts can be performed with an external control unit. The emergency stop signal is performed with positive-making normally closed (NC) contacts in accordance with the closed circuit principle. After the emergency stop function is triggered, the switching mechanism is locked in the shut-off position "0". When the blue reset lever is actuated in switch position "1", the switching contacts are reactivated and the conveyor belt is prepared for being turned back on again. 

Note:                                                                                                                                                                                                            Resetting the pull-rope emergency stop switch must not cause the conveyor system to start up.
 

Designation

Pull-rope emergency stop switch type HEN EX 

Emergency stop device with latching function

Type of actuationBidirectional (double-side)
Complies withEN 60947-5-5; EN 60079-31; (EN IEC 60079-0)
Suited forControls and systems in accordance with DIN EN 60204-1
General
Device group / device categoryII / 2D, 3D; lammable, conductive dust
Type of protectionProtection through housing
for Zone 21, 22            HEN EX II 2DII 2D Ex tb IIIC T85°C Db IP67
for Zone 22                  HEN EX II 3DII 3D Ex tc IIIC T85°C Dc IP67
CertificatesEPS 12 ATEX 1 479 X, IECEx EPS 14.0040X
ATEX/ IECEx
EnclosureAluminum
FinishPU 2K -paint Enclosure – yellow (RAL 1004), release lever – red (RAL 3000), reset lever – blue (RAL 5010)
Mounting2 x M8
Pull-rope length (approved, max.)2 x 50m (typical), 2 x 125m possible
Actuation force 30 N ± 10 N
Weight2,0 kg
Mechanics
Switching systemUp to 3 NC and NO contacts; cam operated positve-opening switches (EN 60947-5-1)
Cable entry (included in scope of supply)2 x M25 x 1,5, with red transport lock (1x screwed cable gland: sealing area Ø 10 mm to Ø 17 mm; 1x dummy screw)
Utilization categoryAC-15: 230 V / 6 A
DC-13: 125 V / 0,8 A
DC-13: 24 V / 2 A 
Connection cross section (max.)2,5 mm2
Protective conductor connectionProtection class I / Protective earthing
Rated insulation voltage Ui400V
Rated impulse withstand voltage Uimp2.5 kV, degree of pollution 3
Conventional thermal current Ith16 A
Electrical system
Permissible ambient temperature–25 °C …+70 °C
Extended ambient temperature range–40 °C …+70 °C (Typen HEN EX 7xx)
Protection rating (EN 60529)IP 67
Ambient conditions in accordance with DIN EN 60947-5-5
Safety classification Depending upon system architecture

DIN EN ISO 13849 -1 (bis PLd)

DIN EN 62061 (bis SIL 2)

Electrical Reliabilityat DC-13: 24 V / 2 A                            B10d > 396.000 actuations
at AC-15: 230 V / 6 A                           B10d > 396.000 actuations
Mechanical Reliability> 50.000 actuations
Reliability and Safety Data

Pull-rope emergency stop switches of type HEN EX are each fastened to the substructure in installation position with 2 M8 screws, centered between the anchor hook 3 of the pull-rope system (see the mounting diagram). The pull-rope 1 is ten sioned by tension springs 2 between the anchor hooks 3 and fastened at the red release lever After the tension springs 2 have been adjusted, the actuation force and path for triggering the switch must be tested to ensure compliance with specified requirements. MOUNTING DIAGRAM 3 5 2 8 1 7 6 7 4 Electrical connection is performed with the device open using the ATEX approved cable gland included in the delivery, directly on the screw joints of the switching elements. . 

 Note:                                                                                                                                                                                                                    The tension springs are designed for cable systems with Kiepe devices at recommended temperature changes in a straight installation. Deviations from this  may require a different spring design or an adjusted tension of the spring for wire break detection

Variants

Name Ordering No. Weight Approvals ATEX Zone Contacts
NC
NO
SPDT
HEN EX 001 2D 91.096.190.001 1.6 kg / 1 Unit ATEX , IEC Ex 21 & 22 EX II 2D
1
1
HEN EX 002 2D 91.096 190.002 1.6 kg / 1 Unit ATEX , IEC Ex 21 & 22 EX II 2D
2
2
HEN EX 003 2D
HEN EX 702 2D (-40°C) 91.096 190.702 1.6 kg / 1 Unit ATEX , IEC Ex 21 & 22 EX II 2D
2
2
HEN EX 001 3D 91.096 300.001 1.6 kg / 1 Unit ATEX , IEC Ex 22 EX II 3D
1
1
HEN EX 002 3D 91.096 300.002 1.7 kg / 1 Unit ATEX , IEC Ex 22 EX II 3D
2
2
HEN EX 702 3D (-40°C) 91.096 300.702 1.7 kg / 1 Unit ATEX , IEC Ex 22 EX II 3D
2
2
Contact

You have a question? We are here for you!

We are looking forward to hearing from you. We are happy to advise you and help you with the selection of the right product.