Kiepe pull rope emergency stop switches type HEN 221 and 231 are SafetyBus variants of Kiepe‘s proven bidirectional HEN type pull rope emergency stop switch. They are used in accordance with the requirements of EN 620 as well as BGI 710 and in conformity with DIN EN ISO 13850 as a supplementary safety measures on conveyor belt systems. The pull rope is symmetrical tensioned on both sides of the release lever. The devices are suitable for outdoor use and applications where the temperature varies considerably. With the pull rope system functionally aligned, the emergency stop signal can be triggered over a distance of up to about 100m for each switch. The emergency stop signal is transferred by a SafetyBus module 100 over a 2-wire bus to a safety relay. Signal transfers can be economically implemented over long distances.
Kiepe pullrope emergency stop switches type HEN 221 and HEN 231 comply with the Machinery Directive 2006/42/EC. They must only be used in combination with Dupline® safety relays in control circuits and require a Dupline® bus signal produced by a channel generator. (www.dupline.com). Types HEN 221 and HEN 231 are equipped with a positive making normal close contact that returns the input signal for the SafetyBus. Taking into consideration the safety data and maintenance recommendations, the pull rope emergency stop switches type HEN can be used with the SafetyBus module in safety circuits in accordance with DIN EN ISO 13849 up to performance level e (PL e).
HEN 221 – SafetyBus preparation, no bus module
HEN 231 – with SafetyBus module