US 11,894,204 B2
Switch assembly with drive system
Sebastian Schmid, Sinzing (DE); Benjamin Dittmann, Neutraubling (DE); and Eugen Nagel, Regensburg (DE)
Assigned to MASCHINENFABRIK REINHAUSEN GMBH, Regensburg (DE)
Appl. No. 17/611,210
Filed by Maschinenfabrik Reinhausen GmbH, Regensburg (DE)
PCT Filed Apr. 23, 2020, PCT No. PCT/EP2020/061274
§ 371(c)(1), (2) Date Nov. 15, 2021,
PCT Pub. No. WO2020/229119, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 10 2019 112 710.6 (DE), filed on May 15, 2019.
Prior Publication US 2022/0216015 A1, Jul. 7, 2022
Int. Cl. H01H 3/26 (2006.01); H01H 9/00 (2006.01)
CPC H01H 3/26 (2013.01) [H01H 9/0027 (2013.01); H01H 2003/266 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A switch assembly, the switch assembly comprising:
a switch; and
a servo drive system for driving the switch, the servo drive system comprising:
a drive shaft connecting the servo drive system to the switch;
a motor configured to drive the switch;
a power section configured to supply power to the motor;
a feedback system, which is configured to:
determine at least two values for an absolute position of the drive shaft generate a feedback signal on the basis of the at least two values; and
a control unit which is a programmable safety controller and is configured to:
control the power section depending on at least one desired value;
influence an operation of the motor depending on the feedback signal; and
identify the presence of at least one safety-relevant event and, in the case of identifying the presence of the safety-relevant event, to transmit at least one control signal to the power section,
wherein the power section is configured to initiate or carry out at least one safety measure depending on the control signal,
wherein the control unit comprises a first processor unit and a second processor unit,
wherein the control unit is further configured to run a program in order to implement a switching command for the switch,
wherein the first processor unit and the second processor unit are configured to run the program in parallel,
wherein the control unit is further configured to carry out at least one reconciliation between the first processor unit and the second processor unit whilst the program is being run,
wherein the control unit is further configured to initiate a further safety measure depending on a result of the at least one reconciliation, and
wherein the further safety measure comprises:
a safe stopping of the motor,
a blocking or shutdown of the power section, or
a tripping of a circuit breaker that is configured to connect or to disconnect equipment to a power network.