Title:
Safety switchgear with switching element in auxiliary contact current path and operation method
Document Type and Number:
Japanese Patent JP6316278
Kind Code:
B2
Abstract:
A safety switching apparatus for switching on or off a technical installation has a failsafe control/evaluation unit with an input for receiving an input signal. The failsafe control/evaluation unit is designed to process the input signal in order to produce an output signal for switching on or off the technical installation at a defined output signal time. The failsafe control/evaluation unit has a first output for transmitting the output signal to an electromechanical switch. The electromechanical switch has an operating contact for switching a load circuit of the technical installation and has a positively guided auxiliary contact in an auxiliary contact current path. The auxiliary contact can be used to carry a current for checking the switching position of the operating contact. A switching element is arranged in the auxiliary contact current path. The failsafe control/evaluation unit is designed to produce a switching signal at a defined switching signal time which has a time gap relative to the output signal time. The failsafe control/evaluation unit has a second output for transmitting the switching signal to the switching element in order to selectively allow or disallow the current through the auxiliary contact current path.
Inventors:
Lee, Kim
Richter, Sebastian
Richter, Sebastian
Application Number:
JP2015503824A
Publication Date:
April 25, 2018
Filing Date:
March 27, 2013
Export Citation:
Assignee:
Pilz Game GmbH and Co. Kahge
International Classes:
G05B9/02; F16P3/08; H01H47/00
Domestic Patent References:
| JP2003514361A | ||||
| JP2007532838A | ||||
| JP2008538169A | ||||
| JP2008535048A |
Attorney, Agent or Firm:
Inaoka cultivation
Mio Kawasaki
Kyoumura Junji
Maruyama Ondo
Mio Kawasaki
Kyoumura Junji
Maruyama Ondo