ELEVATOR AND CONTROL DEVICE FOR SAME
To provide an elevator control device which facilitates an operation at the time of brake release while maximizing the utilization of a braking torque by reducing the resistance value of a circuit to be short-circuited at the time of emergency stop. The control device is provided with a manual short...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | To provide an elevator control device which facilitates an operation at the time of brake release while maximizing the utilization of a braking torque by reducing the resistance value of a circuit to be short-circuited at the time of emergency stop. The control device is provided with a manual short-circuit portion (second short-circuit portion) 7 which uses the braking torque obtained from a three-phase short-circuit in windings of a hoist motor 1 for prevention of speed increase of an elevator car at the time of a rescue operation by means of brake release. A manual short terminal 7A of the manual short-circuit portion 7, which is short-circuited by a shorting connector 6, is disposed in a hall indicator box 9 provided at a floor. An automatic short-circuit portion (first short-circuit portion) 5 for generating the braking torque by short-circuiting the windings of the hoist motor 1 in three phases at the time of emergency stop is disposed in a control panel 8 accommodating the control device. |
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