TH100730A - Magnetic controller for controlling the lifting magnet. - Google Patents

Abstract

DC60 (17/06/53) A method for controlling an electric crane (12) consists of a procedure to excite a magnetic regulator (26) to allow an electric current to pass through a magnet (14) to create a magnetic field around a magnet (14) for mounting. Tightly loaded (LS, LM, LL) to the load magnet (14), receives the feedback input value (102a) at the logic controller (28) from the device (22, 32a-32c), which is coupled with the crane. Electricity (12) in a manner that In response to the input value, the feedback (102a) received at the logic controller (28), received the command value (104) at the magnetic controller (26) from the logic controller (28), and so on. In response to the command value (104) received at the magnetic controller (26), it modifies the current flow from the magnet regulator (26) to the magnet (14) to change the magnetic field around the magnet (14). The system (10a-10d) has also been revealed. The method for controlling an electric crane (12) consists of a procedure to activate a magnetic regulator (26) to allow an electric current to pass through a magnet (14) to create a magnetic field around a magnet (14) for holding the load (LS, LM, LL). ) Attached to the load magnet (14), receives the input feedback value (102a) at the logic controller (28) from the device (22, 32a-32c), which is coupled with the electric generator (12) in such a way that are In response to the input value, the feedback (102a) received at the logic controller (28), received the command value (104) at the magnetic controller (26) from the logic controller (28), and so on. In response to the command value (104) received at the magnetic controller (26), it modifies the current flow from the magnetic regulator (26) to the magnet (14) to change the magnetic field around the magnet (14) system. (10a- 10d) was also revealed.

Claims (8)

The method for controlling the electric crane (12) consists of the following steps: 1. Activate the magnetic controller (26) to cause an electric current to flow through the magnet (14) to create a magnetic field around the magnet (14) for holding the loads (LS, LM, LL) to the load magnet (14), receive the feedback input (102a) at the logic controller (28) from devices (22, 32a-32c) coupled to the electric winch (12), receive a command value (104) at the magnetic controller (26) from the logic controller (28) in such a way as to respond to the feedback input (102a) received at the logic controller (28), and modify the current flow from the magnetic controller (26) to the magnet (14) so as to change the magnetic field around the magnet (14) in such a way as to respond to the command value (104) received at the magnetic controller (26). 2. The method of claim 1, wherein the devices (22, 32a-32c) are the load cell (32c). 3. The method of claim 2, wherein The feedback input (102a) is a factor, a measurement provided by said load cell (32c). 4. The method of claim 1, wherein the devices (22, 32a-32c) are the hoist motor drive (22). 5. The method of claim 4, wherein the feedback input (102a) is a quantity in amperes used to control said hoist motor drive (22), wherein the command value (104) is a reduction in said current flowing through said magnet (14). 6. The method of claim 4, wherein the feedback input (102a) is the torque of the hoist motor drive (22), wherein the command value (104) is an automatic release command to cause the magnetic controller (26) to stop the flow of said current through said magnet (14). 7. The method of claim 6, wherein the torque is approximately equal to the starting torque value. Automatic drop 8. The method of claim 1, wherein, prior to the actuation step, further comprises the step of relating the values of the one or more feedback inputs of said data plane with the one or more data plane command values in the logic controller (28). 9. The method of claim 8, wherein, after receiving the feedback input values, further comprises the step of comparing said feedback input values (102a) with said one or more data plane feedback input values to find an equivalent feedback input value containing the one or more data plane feedback input values, and selecting said one or more data plane command values to be used as the command value (104) received at said magnetic controller (26) taking into account the comparison of said feedback input values. The return of one or more of the said data diagrams with the values of said feedback input (102a) received 1 0. System (10a-10d) for controlling the electric hoist (12), comprising a magnet (14), a magnetic controller (26) interconnected with the magnet (14), devices (22, 32a-32c) interconnected with the magnetic controller (26), wherein the devices (22, 32a-32c) generate a value on said feedback input (102a), a logic controller (28) which, responding to the value on said feedback input (102a), the logic controller (28) generates a command value (104) received by the magnetic controller (26) 1 1. The system (10a-10d) of claim 10, further comprising a mechanism for providing an electric current through a magnet (14) to create a magnetic field around the magnet (14), wherein the mechanism provides a magnetic controller (26), and a mechanism for modifying the electric current through the magnet (14) with respect to a command value (104) so as to vary the magnetic field around the magnet (14), wherein the mechanism provides a logic controller (28) 1. 2. The apparatus (10a-10d) of claim 10, wherein the logic controller (28) is a programmable logic controller (PLC), wherein the PLC includes a data map including the values of the one or more data map feedback inputs coupled with the values of the data map output command 1. 3. The apparatus (10a-10d) of claim 10, wherein the apparatus (22, 32a-32c) is a cell jar (32c) 1. 4. The device (10a-10d) of claim 13, wherein the feedback input (102a) is a measuring device provided by said load cell (32a). 5. The apparatus (10a-10d) of claim 10, wherein the apparatus (22, 32a-32c) is the motor driving the lifting device (22) 1. 6. The device (10a-10d) of claim 15, wherein the value of the feedback input (102a) is a quantity in amperes which is used to control said lift motor (22), wherein the command value (104) is such that said current flowing through said magnet (14) is reduced 1. 7. The device (10a-10d) of claim 15, wherein the feedback input (102a) is the torque of the hoist motor (22), wherein the command value (104) is an automatic down command for the magnetic controller (26) to stop the flow of said current through said magnet (14) 1. 8. The device (10a-10d) of claim 17, wherein the torque is approximately equal to the torque value at the automatic drop-off start point.