Abstract: An intrinsically safe connection unit with a network interface for intrinsically safe appliances in explosion-risk areas, having a housing, a voltage supply connection, plug connection for connecting an intrinsically safe appliance via a transmission cable, and a decoupling circuit. For allowing even a multiplicity of network subscribers to be connected in the explosion-risk area with less wiring complexity, a plurality of plug connections of the same type are provided as network interface, each being preceded by a separate decoupling circuit, and the voltage supply connection builds a central feed connection with separate supply cores for each plug connection each having at least two plug contacts for data communication and at least two plug contacts for supplying power to the connectable appliances via the transmission cable. The invention relates also to a Controller and a network interface for use therewith.

Abstract: A plug-in module for controllers of mobile working machines, having a housing, a connection plug, electronics boards and at least one plug socket for connecting actuators or sensors. The housing being formed by a box with a front, rear and side walls as well as a base plate comprising a cutout for the connection plug, and in that the electronics boards are forming a board box by connecting two end boards and two side boards, with the board box being arranged in the interior of the housing, and with the plug socket being mechanically coupled to the housing by a strain-relief clip.

Abstract: A network infrastructure for mobile machines which are usable in explosive areas, having inherently safe participants and not inherently safe network participants the latter being arranged in pressure-resistant housings. The machine has at least one controller for actuating at least one not inherently safe participant. In order to provide a network infrastructure which avoids the drawbacks of the prior art, the machine has, outside the pressure-resistant housing for the first controller, at least one second, inherently safe controller for actuating at least one inherently safe participant, wherein the first controller forms a data distributor for a plurality of not inherently safe participants and the second controller forms a data distributor for a plurality of inherently safe participants, and wherein the first data distributor and the second data distributor are linked via an electrically decoupled data communication link.

Abstract: A plug-in module for controllers of mobile working machines, having a housing, a connection plug, electronics boards and at least one plug socket for connecting actuators or sensors. The housing being formed by a box with a front, rear and side walls as well as a base plate comprising a cutout for the connection plug, and in that the electronics boards are forming a board box by connecting two end boards and two side boards, with the board box being arranged in the interior of the housing, and with the plug socket being mechanically coupled to the housing by a strain-relief clip.

Abstract: A network infrastructure for mobile machines which are usable in explosive areas, having inherently safe participants and not inherently safe network participants the latter being arranged in pressure-resistant housings. The machine has at least one controller for actuating at least one not inherently safe participant. In order to provide a network infrastructure which avoids the drawbacks of the prior art, the machine has, outside the pressure-resistant housing for the first controller, at least one second, inherently safe controller for actuating at least one inherently safe participant, wherein the first controller forms a data distributor for a plurality of not inherently safe participants and the second controller forms a data distributor for a plurality of inherently safe participants, and wherein the first data distributor and the second data distributor are linked via an electrically decoupled data communication link.

Abstract: An intrinsically safe connection unit with a network interface for intrinsically safe appliances in explosion-risk areas, having a housing, a voltage supply connection, plug connection for connecting an intrinsically safe appliance via a transmission cable, and a decoupling circuit. For allowing even a multiplicity of network subscribers to be connected in the explosion-risk area with less wiring complexity, a plurality of plug connections of the same type are provided as network interface, each being preceded by a separate decoupling circuit, and the voltage supply connection builds a central feed connection with separate supply cores for each plug connection each having at least two plug contacts for data communication and at least two plug contacts for supplying power to the connectable appliances via the transmission cable. The invention relates also to a Controller and a network interface for use therewith.

Abstract: A protection circuit for intrinsically safe electromagnetic actuators operating on the voltage from a power unit (1) approved for underground mining, for switching electrohydraulic valves (5) in underground mining, comprising at least two spaced-apart short-circuit means (14, 16 or 16A) connected in parallel with the electromagnetic actuator coil (11) for short-circuiting the coil in the event of a reversal of the coil voltage. According to the invention, at least one of the short-circuit means comprises a short-circuit semi-conductor switch (16 or 16A) and a voltage-reversal detecting circuit (30) for activating the short-circuit semiconductor switch (16).

Abstract: A slide shoe for a mining winning machine is disclosed. The slide shoe includes a slide shoe body attached to the mining winning machine, a sliding area located on the slide shoe body and including a wear thickness, and at least one sensor. The sensor is scannable by wireless signal transmission. A dimension of the wear thickness decreases due to wear during operation, and a sensor signal of the sensor changes when the dimension of the wear thickness of the sliding area decreases below a predetermined minimum thickness.

Abstract: A slide shoe for a mining winning machine is disclosed. The slide shoe includes a slide shoe body attached to the mining winning machine, a sliding area located on the slide shoe body and including a wear thickness, and at least one sensor. The sensor is scannable by wireless signal transmission. A dimension of the wear thickness decreases due to wear during operation, and a sensor signal of the sensor changes when the dimension of the wear thickness of the sliding area decreases below a predetermined minimum thickness.

Abstract: The present invention relates to a protection circuit for intrinsically safe electromagnetic actuators operating on the voltage from a power unit (1) approved for underground mining, for switching electrohydraulic valves (5) in underground mining, comprising at least two spaced-apart short-circuit means (14, 16 or 16A) connected in parallel with the electromagnetic actuator coil (11) for short-circuiting the coil in the event of a reversal of the coil voltage. According to the invention, at least one of the short-circuit means comprises a short-circuit semi-conductor switch (16 or 16A) and a voltage-reversal detecting circuit (30) for activating the short-circuit semiconductor switch (16).