Safety control system having configurable inputs
AssigneePilz GmbH & Co. KG
InventorsThilo Hutt, Dietmar Seizinger, Marco Kluge, Stephan Lehmann
Life of this patent
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Abstract
A safety control system for switching on and safely switching off at least one actuator, including at least one input module for evaluating an input signal of a safety transmitter and for generating an output signal, and at least one output module for the safe actuation of the at least one actuator as a function of the output signal of the input module. The input signal has different signal parameters as a function of the type of safety transmitter. Furthermore, the safety control system includes a setting unit having a memory in which the signal parameters for the input module are stored, and the input module evaluates the input signal as a function of the signal parameters.
Claims8
A safety control system for switching on and safely switching off an actuator, comprising:
- an input module that evaluates an input signal received from a safety transmitter, which is connected to the input module via feed lines, and for generating an output signal based on the evaluation,
- an output module that actuates the actuator based on the output signal received from the input module, and
- a setting unit having a memory in which signal parameters are stored,
- wherein the input module is configured to derive an expected signal profile of the input signal from the stored signal parameters and to evaluate the input signal based on the expected signal profile of the input signal,
- wherein the stored signal parameters comprise information indicative of signal characteristics selected from the group consisting of pulse period or frequency, pulse duration, and delay time or offset between input and output pulses,
- wherein the input signal is a dynamic clock signal with test pulses having a defined test period and duration, wherein the defined period and duration represent a first signal parameter and a second signal parameter of the signal parameters used by the input module to derive the expected signal profile of the input signal, and wherein the safety transmitter is configured to modulate the test pulses onto the input signal supplied to the input module.
A safety control system for switching on and safely switching off an actuator, comprising:
- an input module that evaluates an input signal received from a safety transmitter, which is connected to the input module via feed lines, and for generating an output signal based on the evaluation,
- an output module that actuates the actuator based on the output signal received from the input module, and
- a setting unit having a memory in which signal parameters are stored,
- wherein the input module is configured to derive an expected signal profile of the input signal from the stored signal parameters and to evaluate the input signal based on the expected signal profile of the input signal,
- wherein the stored signal parameters comprise information indicative of signal characteristics selected from the group consisting of pulse period or frequency, pulse duration, and delay time or offset between input and output pulses,
- wherein the input signal is a dynamic clock signal with test pulses having a defined test period and duration, and wherein the defined period and duration represent a first signal parameter and a second signal parameter of the signal parameters used by the input module to derive the expected signal profile of the input signal, and
- wherein the input module has at least one test output for providing to the safety transmitter a test signal comprising the dynamic clock signal with the test pulses, and wherein the safety transmitter transmits in response to the test signal the input signal having a signal profile that is used by the input module to derive the expected signal profile of the input signal.
Dependencies are inferred from the claim text.