Railway switch machine motor control apparatus

H - Electricity – 02 – P

Patent

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Details

H02P 1/00 (2006.01) B61L 7/08 (2006.01) H02P 1/22 (2006.01) H02P 1/40 (2006.01) H02P 3/00 (2006.01) H02P 3/20 (2006.01) H02P 5/00 (2006.01) H02P 7/00 (2006.01)

Patent

CA 2396624

A motor control apparatus (52) for a reversible motor (54) of a railway switch machine includes a conditional power source (50) having an output voltage (96). A motor control circuit includes inputs (+, -) for inputting the voltage from the power source, inputs for inputting a normal signal (N) and a reverse signal (R), two output terminals (98, 100) for electrical connection to two input terminals (68, 70) of the reversible motor (54), and a relay logic circuit including a pair of double pole, double throw relays (56, 58). The contacts of these relays output the voltage to the two output terminals (98, 100) in response to the normal signal (N), output an inverted polarity of the voltage to the two output terminals (98, 100) in response to the reverse signal (R), and short the two output terminals (98, 100) in response to absence of both of the normal and reverse signals.

L'invention concerne un dispositif (52) de commande de moteur pour un moteur (54) réversible d'un appareil électrique de manoeuvre d'aiguillage. Ce dispositif comprend une source (50) d'alimentation conditionnelle fournissant un potentiel (96) de sortie. Un circuit de commande de moteur comprend des entrées (+, -) pour la tension en provenance de la source d'alimentation électrique, et des entrées pour un signal (N) normal et pour un signal (R) inverse, deux bornes (98, 100) de sortie destinées à la connexion électrique avec deux bornes (68, 70) d'entrée du moteur (54) réversible, et un circuit logique de relais comprenant deux relais (56, 58) bipolaires à deux directions. Les contacts de ces relais permettent d'envoyer la tension dans les deux bornes (98, 100) de sortie en réponse au signal (N) normal, et d'envoyer une tension à polarité inverse aux deux bornes (98, 100) de sortie en réponse au signal (R) inverse, et à court-circuiter les deux bornes (98, 100) de sortie en réponse à l'absence combinée de signal normal et de signal inverse.

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